If all the numbers coming from P= - n² + 41 are prime numbers. Yes, 41 is a prime number.
What is a prime number?A prime number is a positive integer greater than 1 that has no positive integer divisors other than 1 and itself. In this case, when n = 1, P = -1^2 + 41 = 40 + 1 = 41, which is a prime number.
When n = 37, P = -37^2 + 41 = -1368, which is not a prime number since it is divisible by 2, -2, 3, -3, 4, and -4. Therefore, when n = 37, P is not a prime number.
If we choose n = 39, P = -39^2 + 41 = -1520, which is not a prime number since it is divisible by 2, -2, 4, -5, 8, -10, 19, -20, 38, and -76. Therefore, when n = 39, P is not a prime number.
If we choose n = 40, P = -40^2 + 41 = -1599, which is not a prime number since it is divisible by 3, -3, 7, -9, 21, and -63. Therefore, when n = 40, P is not a prime number.
If we choose n = 41, P = -41^2 + 41 = -1680, which is not a prime number since it is divisible by 2, -2, 3, -4, 5, -6, 8, -10, 12, -15, 20, -24, 30, -40, 60, and -120. Therefore, when n = 41, P is not a prime number.
Therefore, not all numbers obtained from P = -n^2 + 41 are prime numbers.
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Please all the steps, one by one! How can this be solved?
There are 5 full square and 6 triangles that are half squares.
5 + (6)(1/2) = 5 + 3 = 8
You could also break this into smaller shapes (like a big triangle on the top and a smaller triangle and rectangle on the bottom and use area formulas to calculate the area. But counting works well in this example.
Answer: 8
Step-by-step explanation:
First you split up this shape into two different shapes, a triangle and trapezoid
Put a line through the coordinates (-2,2) to (-1,2); the top is a triangle and the other is a trapezoid
Area of the trapezoid is A = .5x (base1 + base2) x height
base1 of the trapezoid goes from -4 to -1 which is 3
base2 goes from -2 to -1 which is 1
height is 0 to 2 whcich is 2
A = .5 x (3+1) x 2 = 4
Now area of a triangle is A = .5 x base x height
the base goes from -2 to 2 which is 4
the height goes from 2 to 4 which is 2
A = .5 x (4) x (2) = 4
Area of the Trapezoid + Area of the Triangle = Total Area
4 + 4 = 8
A drink costs 3 dollars. A taco costs 6 dollars. Given the number of each, compute total cost and assign to totalCost. Ex: 2 drinks and 3 tacos yields totalCost of 24.
According to the given statement the equation for the total cost would
total Cost = (3x) + (6y) ..
To compute the total cost, you need to multiply the cost of each item by the number of that item.
In this case, let's say the number of drinks is represented by the variable "x" and the number of tacos is represented by the variable "y".
The cost of each drink is $3, so the total cost of drinks would be 3x.
The cost of each taco is $6, so the total cost of tacos would be 6y.
To find the total cost, you need to add the total cost of drinks and the total cost of tacos together.
For example, if there are 2 drinks (x = 2) and 3 tacos (y = 3), the total cost would be:
total Cost = (3 * 2) + (6 * 3) = 6 + 18 = 24
So, if you have the values for the number of drinks and tacos, you can substitute them into the equation to find the total cost.
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Total cost is 24 dollars.
To calculate the total cost, we need to multiply the cost of each item by their respective quantities and then add them together.
Let's assume the number of drinks is represented by the variable "drinks" and the number of tacos is represented by the variable "tacos".
The cost of a drink is 3 dollars, so the cost of all the drinks is given by "drinks * 3". Similarly, the cost of a taco is 6 dollars, so the cost of all the tacos is given by "tacos * 6".
To find the total cost, we add the cost of the drinks and the cost of the tacos: "totalCost = (drinks * 3) + (tacos * 6)". By substituting the values from the example (2 drinks and 3 tacos), we get "totalCost = (2 * 3) + (3 * 6) = 6 + 18 = 24 dollars".
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Determine whether the series is absolutely convergent, conditionally convergent, or divergent.
[infinity] (−1)n
e1/n
n5
n = 1
absolutely convergentconditionally convergent divergent
The terms do not decrease to zero rapidly enough (due to the presence of the denominator n^5), the series is not absolutely convergent. The series is conditionally convergent.
Let's re-evaluate the convergence of the series.
Consider the series:
∑ [infinity] (-1)^n * e^(1/n) / n^5
To determine the convergence, let's analyze the behavior of the terms as n approaches infinity.
First, let's examine the absolute value of each term:
|(-1)^n * e^(1/n) / n^5| = e^(1/n) / n^5
As n approaches infinity, the exponential term e^(1/n) approaches 1, and the denominator n^5 grows indefinitely. However, the presence of the alternating sign (-1)^n indicates that the series is an alternating series.
To determine if the series is convergent or divergent, we can apply the Alternating Series Test. The Alternating Series Test states that if a series is alternating and the absolute values of the terms decrease monotonically to zero, then the series is convergent.
In this case, as n approaches infinity, e^(1/n) approaches 1, and the terms decrease monotonically to zero since the exponential term in the numerator does not change sign. Therefore, the series is convergent by the Alternating Series Test.
However, since the terms do not decrease to zero rapidly enough (due to the presence of the denominator n^5), the series is not absolutely convergent.
Therefore, the series is conditionally convergent.
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Many situations in business require the use of an "average" function. One example might be the determination of a function that models the average cost of producing an item. In this activity, you will build and use an "average" function. When the iPhone was brand new, one could buy a 8-gigabyte model for roughly $600. There was an additional $70-per month service fee to actually use the iPhone as intended. We will assume for this activity that the monthly service fee does not change. A. Determine the total cost of owning an iPhone after: i. 2 months ii. 4 months iii. 6 months iv. 8 months
The average cost per month of owning an iPhone decreases as the number of months of ownership increases. After 8 months, the average cost per month is $145.
Assuming a constant monthly service fee of $70, the total cost (C) of owning an iPhone for n months can be calculated as:
C = 600 + 70n
where n is the number of months of ownership.
Using this formula, we can calculate the total cost of owning an iPhone after:
i. 2 months:
C = 600 + 70(2) = 740
ii. 4 months:
C = 600 + 70(4) = 880
iii. 6 months:
C = 600 + 70(6) = 1020
iv. 8 months:
C = 600 + 70(8) = 1160
To find the average cost per month, we can divide the total cost by the number of months:
i. Average cost per month after 2 months: 740 / 2 = 370
ii. Average cost per month after 4 months: 880 / 4 = 220
iii. Average cost per month after 6 months: 1020 / 6 = 170
iv. Average cost per month after 8 months: 1160 / 8 = 145
Therefore, the average cost per month of owning an iPhone decreases as the number of months of ownership increases. After 8 months, the average cost per month is $145.
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show the steps of how got the answer
Answer:
Step-by-step explanation:
f- -3u=21 divide each side by (-3)
-3u/-3=-21/3
u=-7
g) 23+a=12 use subtraction method , subtract 23 from both sides
23-23+a=12-23
a=-11
h) -9+b=15 use additional method, add 9 to both sides
-9+9+b=15+9
b=26
A sociologist polled a random sample of people and asked them their age and annual income. The two-way frequency table below shows the results. Annual income vs. age group Less than $50,000 At least $50,000 Total Ages 44 and under 148 68 216 Ages 45 and above 38 94 132 Total 186 162 348 Which of the following statements is true of those polled? Choose 1 answer: А A person with an annual income of less than $50,000 is more likely to be 45 years old or above. B A person in the 44 and under age group is more likely to to have an annual income of at least $50,000
Answer:
C A person with an annual income of at least \$50{,}000$50,000dollar sign, 50, comma, 000 is more likely to be 454545 years old or above
A person in the 44 and under age group is more likely to have an annual income of at least $50,000 is a correct statement.
We have given that,
A sociologist polled a random sample of people and asked them their age and annual income.
What is the annual income?
annual income is the amount of money you receive during the year into your bank account, before any deductions.
The two-way frequency table below shows the results.
Annual income vs. age group Less than $50,000 At least $50,000
Total Ages 44 and under 148 68 216 Ages 45 and above 38 94 132
Total 186 162 348
A person with an annual income of at least
\(=\$50000\\=$50,000dollar\)
Therefore statement b is true.
A person in the 44 and under age group is more likely to have an annual income of at least $50,000.
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Two sides and an angle (SSA) of a triangle are given. Determine whether the given measurements produce one triangle, two triangles, or no triangle at all. Solve each triangle that results a = 10
b = 13.6 A = 33°
From the calculation, all three inequalities are satisfied, which means that the given measurements produce one triangle.
To determine whether the given measurements produce one triangle, two triangles, or no triangle at all, we can use the Law of Sines and the Triangle Inequality Theorem.
Given:
a = 10
b = 13.6
A = 33°
Determine angle B:
Angle B can be found using the equation: B = 180° - A - C, where C is the remaining angle of the triangle.
B = 180° - 33° - C
B = 147° - C
Apply the Law of Sines:
The Law of Sines states that in any triangle, the ratio of the length of a side to the sine of its opposite angle is constant.
a/sin(A) = b/sin(B) = c/sin(C)
We can rearrange the equation to solve for side c:
c = (a * sin(C)) / sin(A)
Substituting the given values:
c = (10 * sin(C)) / sin(33°)
Determine angle C:
We can use the equation: C = arcsin((c * sin(A)) / a)
C = arcsin((c * sin(33°)) / 10)
Apply the Triangle Inequality Theorem:
The Triangle Inequality Theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the remaining side.
In this case, we need to check if a + b > c, b + c > a, and c + a > b.
If all three inequalities are satisfied, it means that the measurements produce one triangle. If one of the inequalities is not satisfied, it means no triangle can be formed.
Now, let's perform the calculations:
B = 147° - C (from step 1)
c = (10 * sin(C)) / sin(33°) (from step 2)
C = arcsin((c * sin(33°)) / 10) (from step 3)
Using a calculator, we find that C ≈ 34.65° and c ≈ 6.16.
Now, let's check the Triangle Inequality Theorem:
a + b > c:
10 + 13.6 > 6.16
23.6 > 6.16 (True)
b + c > a:
13.6 + 6.16 > 10
19.76 > 10 (True)
c + a > b:
6.16 + 10 > 13.6
16.16 > 13.6 (True)
All three inequalities are satisfied, which means that the given measurements produce one triangle.
In summary, with the given measurements of a = 10, b = 13.6, and A = 33°, we can determine that one triangle can be formed. The measures of the angles are approximately A = 33°, B ≈ 147° - C, and C ≈ 34.65°, and the lengths of the sides are approximately a = 10, b = 13.6, and c ≈ 6.16.
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in the united states, coins have the following thicknesses: penny, 1.551.55 mm; nickel, 1.951.95 mm; dime, 1.351.35 mm; quarter, 1.751.75 mm. if a stack of these coins is exactly 1414 mm high, how many coins are in the stack?
The coins in the stack if its height is 1414 mm and the thickness of the coins are penny 1.55 mm, nickel 1.95 mm, dime 1.35 mm, and quarter 1.75 mm is 214.
The thickness of the coins are
Penny 1.55 mm
Nickel 1.95 mm
Dime 1.35 mm
Quarter 1.75 mm
The stack which contains the given coins is 1414 mm high.
Now to find the number of coins we can divide the total thickness of the coins with the height of the given stack.
Total thickness of available coins = 1.55 + 1.95 + 1.35 + 1.75 = 6.6
The total height of stack = 1414 mm
Number of coins in the stack = 1414/6.6 = 214.24
The number of coins are 214
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Find the point on the plane z = x + y + 1 closest to the point P = (1, 0, 0). Hint: Minimize the square of the distance
Answer: Q = (2/3, 4/3, 7/3)
Step-by-step explanation:
To find the point of intersection, we can solve these two equations simultaneously:
x + y - z = 1
x + y - z = -1
Subtracting the second equation from the first, we get:
2z = 2
z = 1
Substituting this into either equation, we get:
x + y = 2
There are infinitely many solutions to this equation, but we want the one that is closest to P = (1, 0, 0). This means we want to minimize the distance |PQ|, which is given by:
|PQ| = sqrt((x-1)^2 + y^2 + 1)
We can use Lagrange multipliers to find the minimum of this distance subject to the constraint x + y = 2:
L(x, y, λ) = (x-1)^2 + y^2 + 1 + λ(x + y - 2)
Taking the partial derivatives and setting them equal to zero, we get:
∂L/∂x = 2(x-1) + λ = 0
∂L/∂y = 2y + λ = 0
∂L/∂λ = x + y - 2 = 0
Solving these equations, we get:
x = 2/3
y = 4/3
Substituting these values into z = x + y + 1, we get:
z = 7/3
So the point Q on the plane closest to P = (1, 0, 0) is Q = (2/3, 4/3, 7/3).
calculate the average rate of change of the function y= ½x² - 1 over the interval -2 ≤ x ≤ 0
Answer: The average rate of change of the function in that interval is r = -1
Step-by-step explanation:
When we have a function f(x), the average rate of change in an interval:
a ≤ x ≤ b
Is calculated as:
\(rate = \frac{f(b) - f(a)}{b - a}\)
In this case, the function is:
y = f(x) = (1/2)*x^2 - 1
And the interval is:
-2 ≤ x ≤ 0
Then the rate of change will be:
\(rate = \frac{f(0) - f(-2)}{0 -(-2)} = \frac{((1/2)*(0)^2 - 1) -((1/2)(-2)^2 - 1)}{2} = \frac{-2}{2} = -1\)
The average rate of change of that function in that interval is r = -1
Rectangle ABCD is rotated 180°. What rule shows the input and output of the rotation, and what is the new coordinate of A′?
85°
4x + 21°
what do I am suppose
Answer:
x= 16
4x+21 = 85 degrees
Step-by-step explanation:
The angles shown are vertical angles and vertical angles are equal
85 = 4x+21
Subtract 21 from each side
85 -21 = 4x+21-21
64 = 4x
Divide by 4
64/4 = 4x/4
16 = x
Answer:
16degrees
Step-by-step explanation:
As these angle are (vertically opposite angles)
So,85=4x+21,
85-21=4x
x=64/4
x=16degrees
find the exact value of sin(0) when cos(0) =3/5 and the terminal side of (0) is in quadrant 4
When the cosine of an angle (0) is 3/5 and the angle lies in quadrant 4, the exact value of the sine of that angle is -4/5.
To find the exact value of sin(0), we can utilize the Pythagorean identity, which states that \(sin^2(x) + cos^2(x) = 1,\) where x is an angle in a right triangle. Since the terminal side of the angle (0) is in quadrant 4, we know that the cosine value will be positive, and the sine value will be negative.
Given that cos(0) = 3/5, we can determine the value of sin(0) using the Pythagorean identity as follows:
\(sin^2(0) + cos^2(0) = 1\\sin^2(0) + (3/5)^2 = 1\\sin^2(0) + 9/25 = 1\\sin^2(0) = 1 - 9/25\\sin^2(0) = 25/25 - 9/25\\sin^2(0) = 16/25\)
Taking the square root of both sides to find sin(0), we have:
sin(0) = ±√(16/25)
Since the terminal side of (0) is in quadrant 4, the y-coordinate, which represents sin(0), will be negative. Therefore, we can conclude:
sin(0) = -√(16/25)
Simplifying further, we get:
sin(0) = -4/5
Hence, the exact value of sin(0) when cos(0) = 3/5 and the terminal side of (0) is in quadrant 4 is -4/5.
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Note the correct and the complete question is
Q- Find the exact value of sin(0) when cos(0) =3/5 and the terminal side of (0) is in quadrant 4 ?
Given that the two lines are parallel, solve for x and find the measure of the labeled angle.
Answer:
x= 30
The angles measure 80 degrees
Step-by-step explanation:
The two angles are corresponding angles and, when the lines are parallel, corresponding angles are equal.
2x+20 = 3x-10
Subtract 2x from each side
2x+20-2x = 3x-10-2x
20 = x-10
Add 10 from each side
20+10=x-10+10
30 = x
2x+20 = 2(30) +20 = 60+20 = 80
This Answer has been Removed.
PLEASE HELP!
a blue 6.5 g six sided die is rolling with a velocity of +12 m/s and a greens 7.5 g eight sided die is rolling in the opposite direction with a velocity of 10 m/s
calculate the magnitude of the momentum of two-dice system.
the magnitude of the momentum for the two-dice system is 0.003 kg·m/s.To calculate the magnitude of momentum for the two-dice system,
we need to determine the momentum of each die and then sum them together.
Momentum (p) is calculated by multiplying the mass (m) of an object by its velocity (v) formula
p = m * v
For the blue die:
Mass of the blue die (m₁) = 6.5 g = 0.0065 kg (converting grams to kilograms)
Velocity of the blue die (v₁) = +12 m/s
Momentum of the blue die (p₁) = m₁ * v₁
p₁ = 0.0065 kg * 12 m/s
p₁ = 0.078 kg·m/s
For the green die:
Mass of the green die (m₂) = 7.5 g = 0.0075 kg
Velocity of the green die (v₂) = -10 m/s (opposite direction)
Momentum of the green die (p₂) = m₂ * v₂
p₂ = 0.0075 kg * (-10 m/s)
p₂ = -0.075 kg·m/s
Now, to find the momentum of the two-dice system, we sum the individual momenta:
Momentum of the two-dice system (p_total) = p₁ + p₂
p_total = 0.078 kg·m/s + (-0.075 kg·m/s)
p_total = 0.003 kg·m/s
The magnitude of the momentum is the absolute value of the total momentum:
Magnitude of momentum = |p_total| = |0.003 kg·m/s| = 0.003 kg·m/s
Therefore, the magnitude of the momentum for the two-dice system is 0.003 kg·m/s.
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Candace is a salesperson at the local boat store. She receives a 14% commission on every sale that she makes. How much commission does Candace
make on a boat that sells for $1,995?
Answer: 00000
Step-by-step explanation:
I need help! this is due today!
Answer:
4. 61
5. approximately 43
6. 120
Step-by-step explanation:
4. 80 + 39 = 119
180 - 119 = 61
5. 7x - 10 = 90
+10 +10
7x = 100
divide by 7
x = 14.3
3 times 14.3 = 42.9
6. 70 + 50 = 120
180 - 120 = 60
180 - 60 = 120
in a factorial design, a line graph of the results is most likely to show an interaction when the lines are:
In a factorial design, a line graph of the results is most likely to show an interaction when the lines are not parallel.
What is factorial design?
It is possible to investigate the main and interaction effects between two or more independent variables and on one or more outcome variables using the factorial design as a sort of research approach.
Here,
in a factorial design, a line graph of the results is most likely to show an interaction when the lines are both main effects and interactions are converging lines.
Hence, a line graph of the results is most likely to show an interaction when the lines are not parallel.
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Define positive feedback in systems and explain how positive feedback is responsible for the loud screeching noise that is heard when a microphone gets too close to a speaker.
This is science pls help
Answer:
Positive feedback is a high-pitched sound that comes out of speakers when something about the arrangement or the calibration of the audio system is not suitable for the desired setting. And if you aren't talking about speakers positive feedback occurs to increase the change or output
Explanation:
When you speak in front of a large audience, you obviously have to be loud enough to be audible to everyone present. Sure, you can shout to be loud enough, but that’s not what I, or anyone else (including your doctor), would recommend. Therefore, you speak into a microphone (or simply, a mic). The mic transmits your voice to another device, known as an amplifier, which enhances the amplitude of the signals that it received from the mic. These ‘amplified’ signals are then sent to the speakers (audio output), where electrical signals are converted into sound and subsequently discharged to the audience. However, if the sound discharged from the speakers somehow reaches back to the mic (which ideally shouldn’t happen), the process discussed above kick-starts again, i.e., the mic transmits sound to the amplifier, which then transmits to the speaker, and back to the mic… and then this goes on and on. The result is that you hear a high-pitched squeal, which gets louder and louder (due to the reinforced amplitude as a result of multiple rounds of amplification) until it is corrected.
Suppose a random variable T is Exponential with u = 102. Compute each of the following.
P(T <= 153) = ___________
If a random variable T is Exponential with u = 102 then the probability that T is less than or equal to 153 is 0.632
If T is an exponential random variable with parameter u, then the probability density function of T is given by:
\(f(t) = (1/u) \times e^(^-^t^/^u^)\) for t ≥ 0
The cumulative distribution function (CDF) of T is given by:
F(t) = P(T ≤ t)
= ∫[0, t] f(x) dx
\(= 1 - e^(^-^t^/^u^)\) for t ≥ 0
In this case, we are given that T is Exponential with u = 102.
To find P(T ≤ 153), we can use the CDF formula with t = 153:
P(T ≤ 153) = F(153)
= \(1 - e^(^-^1^5^3^/^1^0^2^)\)
P(T ≤ 153) = 0.632
Therefore, the probability that T is less than or equal to 153 is 0.632.
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Household Income (thousands)
38
45
76
93
50
54
29
44
62
31
The household incomes for 10 different households are shown. What is the mean absolute deviation for the group (round to the
nearest tenth)?
The mean absolute deviation for the group of household incomes is approximately 14.8 (rounded to the nearest tenth).
To calculate the mean absolute deviation (MAD) for a group of data, we follow these steps:
Find the mean (average) of the data set.
Subtract the mean from each data point, obtaining the deviations.
Take the absolute value of each deviation.
Find the mean of the absolute deviations.
Given the household incomes for 10 different households:
38, 45, 76, 93, 50, 54, 29, 44, 62, 31
Let's calculate the MAD step by step:
Find the mean (average):
Mean = (38 + 45 + 76 + 93 + 50 + 54 + 29 + 44 + 62 + 31) / 10
Mean = 482 / 10
Mean = 48.2
Calculate the deviations:
Deviation for each data point = Data point - Mean
Deviation for 38 = 38 - 48.2 = -10.2
Deviation for 45 = 45 - 48.2 = -3.2
Deviation for 76 = 76 - 48.2 = 27.8
Deviation for 93 = 93 - 48.2 = 44.8
Deviation for 50 = 50 - 48.2 = 1.8
Deviation for 54 = 54 - 48.2 = 5.8
Deviation for 29 = 29 - 48.2 = -19.2
Deviation for 44 = 44 - 48.2 = -4.2
Deviation for 62 = 62 - 48.2 = 13.8
Deviation for 31 = 31 - 48.2 = -17.2
Take the absolute value of each deviation:
Absolute deviation for each data point = |Deviation|
Absolute deviation for -10.2 = 10.2
Absolute deviation for -3.2 = 3.2
Absolute deviation for 27.8 = 27.8
Absolute deviation for 44.8 = 44.8
Absolute deviation for 1.8 = 1.8
Absolute deviation for 5.8 = 5.8
Absolute deviation for -19.2 = 19.2
Absolute deviation for -4.2 = 4.2
Absolute deviation for 13.8 = 13.8
Absolute deviation for -17.2 = 17.2
Find the mean of the absolute deviations:
Mean Absolute Deviation (MAD) = (10.2 + 3.2 + 27.8 + 44.8 + 1.8 + 5.8 + 19.2 + 4.2 + 13.8 + 17.2) / 10
MAD = 148 / 10
MAD = 14.8
To the nearest tenth, this means that the mean absolute deviation for the group of household incomes is around 14.8.
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which of the following data sets would most likely have a negative association and a correlation coefficient between 0 and -1? a.) average seasonal temperature in the united states; air-conditioning costs for homes in the united states b.) number of miles driven by paul; number of gallons of gas used by paul's car c.) swimsuit sales throughout the year; sunscreen sales throughout the year d.) steepness of the appalachian trail; john's speed while hiking the appalachian trail
The correct option is c.) swimsuit sales throughout the year; sunscreen sales throughout the year.
Correlation coefficient is a measure of the strength and direction of a relationship between two variables. The correlation coefficient varies from -1 to +1. A correlation of -1 means that a negative association between two variables is perfect, while a correlation of +1 means that there is a positive association between two variables that is perfect. The closer the correlation coefficient is to 0, the weaker the association between two variables is. A correlation coefficient of 0 means that there is no relationship between two variables.From the given options, the data set that is most likely to have a negative association and a correlation coefficient between 0 and -1 is (c) swimsuit sales throughout the year and sunscreen sales throughout the year.The reason behind this is that when it's summer or a hot season, people tend to buy more swimsuits than sunscreen. And when it's winter or a cold season, people tend to buy more sunscreen than swimsuits. Hence, the correlation coefficient between swimsuit sales throughout the year and sunscreen sales throughout the year is most likely to be between 0 and -1 because there is an inverse relationship between these two variables.
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Answer:Steepness of Appalachian Trail; John’s Speed while hiking the Appalachian Trail
Step-by-step explanation:
A self-selecting sample is Group of answer choices a good indicator of sample quality. not likely to be biased. guaranteed to be representative. not likely to be representative.
A self-selecting sample is not likely to be representative. The reason why a self-selecting sample is not likely representative would be discussed below.
What is self-selecting sample?A self-selection sample is determined by the individual that are used as data for the research. They are the ones that will determine the inclusion or exclusion of the sample units by either affirming or declining to participate.
The reason self-selecting sample is not likely to be representative is that it is too bias as the individuals that volunteered may not be able to satisfy the goals of the research.
Therefore, a self-selecting sample is not likely to be representative.
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A cylindrical tank can hold a maximum of 40 litres of water. It has 15 litres of water
in it to start with. Water is flowing slowly in at a rate of 5 litres per minute.
a) Prepare a table of values showing how much water is in the container at 1-minute
intervals from 0 up to 3 minutes
The equation that shows the amount of water in the tank after x minutes is given by y = 5x + 15
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.
Let y represent the amount of water in the tank after x minutes. Water is flowing slowly in at a rate of 5 liters per minute, hence:
y = 5x + 15
At 1 minute, x = 1: y = 5(1) + 15 = 20
At 2 minute, x = 2: y = 5(2) + 15 = 25
At 3 minute, x = 3: y = 5(3) + 15 = 30
The equation that shows the amount of water in the tank after x minutes is given by y = 5x + 15
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PLEASE ANSWER PLZZZ HELP
In which one of the following measured numbers are all of the zeros significant?
Group of answer choices
3,700,000
1.023700
0.0307
0.000120
How many solutions does the nonlinear system of equations graphed below
have?
The curves are intersecting at (-1.75, 2.5) and (1.75, 2)
Nonlinear functions include all functions that are not linear. The following are some instances of nonlinear functions: f(x) = x2 - 2x + 2, ln (x), ex, etc.
In the above question, a graphical representation of non-linear system of equations is given
We need to find the solution of this non-linear system of equations based on the graphical representation
We can find the solutions from the graph, wherever the curves are intersecting, that intersection point is known as the solution of the non-linear system of equations
We can clearly see that, the curves are intersecting at
(-1.75, 2.5) and (1.75, 2)
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The diagram shows the net of a juice box. The box is a rectangular prism. What is the surface area of the juice box?
Answer:269.6 square centimeters
Step-by-step explanation:
To get the graph of y = (x - b)² + a, we should move the graph of y = x² in what ways? down a units left b units up b units right b units left a units down b units right a units up a units
To obtain the graph of y = (x - b)² + a from the graph of y = x², we need to make specific transformations. We should shift the graph down by a units, move it right by b units, and shift it up by a units.
To understand how to obtain the graph of y = (x - b)² + a, let's analyze the given equation. The expression (x - b) represents a horizontal shift of the graph of y = x². When we subtract b from x, the effect is a shift to the right by b units.
Next, the squared term (x - b)² indicates that the graph will be compressed or stretched horizontally compared to the graph of y = x². However, since the coefficient of the squared term is 1, there is no horizontal compression or stretching in this case.
Moving on, adding a to the expression (x - b)² shifts the graph vertically. If a is positive, the graph moves upward by a units. Conversely, if a is negative, the graph shifts downward by a units.
To summarize, the transformations needed to obtain the graph of y = (x - b)² + a from the graph of y = x² are shifting it down by a units, moving it right by b units, and shifting it up by a units.
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A special deck of cards has 12 cards. four are green, three are blue, and five are red. When a card is picked, the color of it is recorded. An experiment consists of first picking a card and then tossing a coin. A. How many elements are there in the sample space? 12 B. Let A be the event that a green card is picked first, followed by landing a tail on the coin toss. P(A) = Present your answer as a decimal number rounded to two decimal places of accuracy. C. Let C be the event that a green or red is picked, followed by landing a tail on the coin toss. Are the events A and C mutually exclusive?(Yes or No) D. Let B be the event that a blue or red is picked, followed by landing a tail on the coin toss. Are the events A and B mutually exclusive? (Yes or No)
Answer:
A. Sample space = 6
B. 0.17
C. No
D. Yes
Step-by-step explanation:
A. The sample space of an experiment is the set of all possible outcomes of that experiment.
since there are three colours and 2 outcomes for a coin toss,
sample space = 3 * 2 = 6
B. Probability of picking a green first = 4/12 = 1/3
probability of a tail = 1/2
Probability of a green and a tail, P(A) = 1/3 * 1/2 = 0.17
C. No.
Considering the two events;
A; green card is picked first
C ; a green or red card is picked
There is an intersection point for the two events. Therefore, they are not mutually exclusive.
D. Yes.
Considering the two events;
A; green card is picked first
B ; a blue or red card is picked
There is no intersection point for the two events. Therefore, they are mutually exclusive.
For want of a nail, the shoe was lost,
For want of a shoe, the horse was lost,
For want of a horse, the rider was lost,
For want of a rider, the battle was lost,
For want of a battle, the kingdom was lost,
And all for the want of a horseshoe nail.
From the above poem, we can deduce that the lack of one horseshoe could be either inconsequential or it could indirectly cause the loss of a war. Some systems are quite sensitive to their starting conditions, so a small change may cause a big difference in the outcome.
Keeping the above in mind, look at the following polynomials:
⦁ y = x
⦁ y = x2
⦁ y = x3
Does a slight change in the degree of the polynomials affect their graphs? If yes, show your results graphically, taking values of x as -3, -2, -1, 0, 1, 2 and 3 in every case.
The poem For Want of a Nail is a warning about how small things can have large and unforeseen consequences. The lack of a horseshoe could lead to the loss of a horse, which could result in the loss of a rider, which could lead to the loss of a battle.
This shows that a small change can cause a big difference in the outcome. We can see a similar phenomenon in the world of mathematics, where small changes in a function can lead to significant changes in its behavior. For example, the degree of a polynomial can have a dramatic effect on its graph. Let's consider the function y = x². This is a second-degree polynomial, which means that its graph is a parabola. If we change the degree of this polynomial to 1, then we get the function y = x, which is a straight line. If we change the degree of this polynomial to 3, then we get the function y = x³, which is a cubic curve. If we graph these functions for the values of x from -3 to 3, we can see how the slight change in the degree of the polynomial affects their graphs. The graph of y = x² is a parabola that opens upward. TThe graph of y = x is a straight line that passes through the origin. The graph of y = x³ is a cubic curve that passes through the origin and has two turning points. These graphs show that a small change in the degree of the polynomial can have a significant effect on its graph.For such more question on polynomial
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