Answer: 4
4x = 4
S RT = 4
Answer = 4
i am not so sure.
In the file 'Death And Taxes.csv' are data on death rates prior to and following tax rate changes during years in which the US government announced it was changing the tax rate on inheritance. After performing the appropriate test that compares the death rates before and after tax increases, the absolute value of t = , df = and P = Round your answers for t and P to three decimal places and provide your answer for df as an integer (i.e., Arabic numeral(s)). DeathAndTaxes.csv yearofChange, HighertaxDeaths, lowerTaxDeaths 1917,22.21,24.93 1917,18.86,20 1919,28.21,29.93 1924,31.64,30.64 1926,18.43,20.86 1932,9.5,10.14 1934, 24.29,28 1935, 26.64, 25.29 1940,35.07,35 1941,38.86,37.57 1942,28.5, 34.79
In the file 'Death And Taxes.csv' are data on death rates prior to and following tax rate changes during years in which the US government announced it was changing the tax rate on inheritance. After performing the appropriate test that compares the death rates before and after tax increases, the absolute value of t = 2.719, df = 10 and P = 0.020.
To obtain these values, a t-test was conducted on the data in the 'Death And Taxes.csv' file to compare the death rates before and after tax increases. The tax rate changes occurred in different years, and the death rates were recorded prior to and following the tax rate changes. To perform the t-test, the difference between the death rates after and before the tax increase was calculated for each year, and these differences were used to obtain a sample mean and standard deviation. The null hypothesis was that there is no difference between the death rates before and after the tax increase. The alternative hypothesis was that the death rates after the tax increase are higher than before. The t-value was calculated as the ratio of the sample mean difference to the standard error of the mean difference. The degrees of freedom were obtained as n-1, where n is the number of years with tax rate changes. The P-value was obtained from a t-distribution table using the t-value and degrees of freedom. The P-value indicates the probability of observing the t-value or a more extreme value if the null hypothesis is true. Since the P-value is less than 0.05, we reject the null hypothesis and conclude that there is a significant difference between the death rates before and after the tax increase. The tax rate increase seems to have had a negative impact on the death rates. Note that the death rates are given in the decimal form.
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Builtrite has calculated the average cash flow to be $11,000 with a standard deviation of $4000. What is the probability of a cash flow being between $10,000 and $14,000 ? (Assume a normal distribution.)
Using the z-score formula, calculate z-scores for $10,000 and $14,000. Look up probabilities in the Z-table and find the difference: approximately 0.3721 or 37.21%.
To calculate the probability of a cash flow being between $10,000 and $14,000, we need to standardize the values using the z-score and then use the standard normal distribution table (also known as the Z-table).
The formula to calculate the z-score is:
z = (x - μ) / σ
Where:
- x is the cash flow value ($10,000 or $14,000 in this case),
- μ is the average cash flow ($11,000),
- σ is the standard deviation ($4,000).
Let's calculate the z-scores for both values:
For $10,000:
z1 = (10,000 - 11,000) / 4,000 = -0.25
For $14,000:
z2 = (14,000 - 11,000) / 4,000 = 0.75
Now, we can use the Z-table to find the corresponding probabilities for these z-scores. We need to find the area under the curve between -0.25 and 0.75.
Using the Z-table, the probability corresponding to z1 = -0.25 is approximately 0.4013.
Using the Z-table, the probability corresponding to z2 = 0.75 is approximately 0.7734.
To find the probability of the cash flow being between $10,000 and $14,000, we subtract the lower probability from the higher probability:
Probability = 0.7734 - 0.4013 ≈ 0.3721
Therefore, the probability of the cash flow being between $10,000 and $14,000 is approximately 0.3721 or 37.21%.
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A number line going from negative 1 to positive 1 in increments of 1. There are 4 equal spaces between each number. Is −1 4 < −3 4 ? Use the number line to explain your answer. No, because Negative one-fourth is to the left of Negative three-fourths No, because Negative one-fourth is to the right of Negative three-fourths Yes, because Negative one-fourth is to the left of Negative three-fourths Yes, becauseNegative one-fourth is to the right of Negative three-fourths
Answer:
the answer is option B no because -1/4 is to the right of -3/4
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
What is the y-intercept of f(x) = 3x 2? a. (9,0) b. (0,9) c. (0,-9) d. (9,-9)
Answer:
f(x) = 3x + 9: y - intercept is option c. (0,-9)
f(x) = 3x - 9: y - intercept is option b. (0, 9)
Step-by-step explanation:
option a and d cant be correct since y = 0 in those answer when the y - intercept is when x = 0
If the function f(x) = 3x + 9
than x = 0
f(x) = 3(0) + 9
f(x) = 0 + 9
f(x) = 9
x = 0 and y = 9 (0, 9)
If the function f(x) = 3x - 9
than x = 0
f(x) = 3(0) - 9
f(x) = 0 - 9
f(x) = -9
x = 0 and y = -9 (0, -9)
Anthony sold 45 tickets to the school play and Katy sold 40 tickets. What is the ratio of the number of tickets Anthony sold to the number of tickets Katy sold?
9:8
40:45
5 to 8
8 to 9
Answer:
the answer is 40:45
Step-by-step explanation:
i did the test and got it right
Soto Pharmaceuticals COVID-23 vaccine vials contain about 2 ml of vaccine solution. This expensive solution must be poured by machine in such a way that the more than 2% solution is lost due to over-ruing. It has been determined that pouring more than 2.100 ml will cause an uncle loss of proft. What should the manufacturer set the moon pouring setting to ensure profits are kept at the acceptable level of Pharmaceuticals has determined that the machines a standard deviation of 0.050 ml
a. 1997 ml
b. 1.769 ml
c. 2.092 ml 1.800 ml
The manufacturer should set the moon pouring setting to 1.800 ml to ensure profits are kept at the acceptable level.
What should be the setting for the moon pouring to maintain acceptable profits in Soto Pharmaceuticals' COVID-23 vaccine production?To ensure that profits are kept at the acceptable level, the manufacturer should set the moon pouring setting to 1.800 ml. This setting takes into account the fact that more than 2% solution loss due to over-pouring is not desirable and pouring more than 2.100 ml will result in an unacceptable loss of profit.
By setting the moon pouring at 1.800 ml, the manufacturer aims to strike a balance between minimizing solution loss and maximizing profit. The standard deviation of 0.050 ml provides an indication of the variability in the pouring process, and setting the pouring level at 1.800 ml helps to control and minimize potential losses due to over-pouring.
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what is slope. and what is it do
Answer:
Step-by-step explanation:
Slope is the steepness of a line as it moves from LEFT to RIGHT. Slope is the ratio of the rise, the vertical change, to the run, the horizontal change of a line. The slope of a line is always constant (it never changes) no matter what 2 points on the line you choose.
Consider the two vectors à = (1,-1, 2) and b = (-1, 1, a) where a is the last digit of your exam number. (a) Give a unit vector in the direction of a. (b) Compute ab and ab. (c) Give an equation for the plane perpendicular to d and containing the point (3.5, -7).
(a) To find a unit vector in the direction of vector a, divide each component of a by √6: à = (1/√6, -1/√6, 2/√6). (b) The dot product ab is 2a - 2, and the cross product ab is (a - 2, -1, a + 2).
(c) The equation of the plane perpendicular to vector d and containing the point (3.5, -7) is (a)(x - 3.5) + (b)(y + 7) + (c)(z - z₀) = 0, where z₀ is unknown.
(a) To find a unit vector in the direction of vector a, we need to divide vector a by its magnitude. The magnitude of a is given by ||a|| = √(1² + (-1)² + 2²) = √6. Therefore, a unit vector in the direction of a is obtained by dividing each component of a by √6:
à = (1/√6, -1/√6, 2/√6).
(b) To compute the dot product ab, we multiply the corresponding components of vectors a and b and sum them up:
ab = (1)(-1) + (-1)(1) + (2)(a) = -1 - 1 + 2a = 2a - 2.
To compute the cross product ab, we can use the cross product formula:
ab = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1)
= (2(-1) - (-1)(a), (-1)(-1) - 1(2), 1(a) - 2(-1))
= (-2 + a, 1 - 2, a + 2)
= (a - 2, -1, a + 2).
(c) The equation for the plane perpendicular to vector d and containing the point (3.5, -7) can be expressed using the vector equation of a plane:
(ax - x₀) + (by - y₀) + (cz - z₀) = 0,
where (x₀, y₀, z₀) is the given point on the plane, and (a, b, c) are the direction ratios of vector d.
Substituting the given point (3.5, -7) and the components of vector d into the equation, we have:
(a)(x - 3.5) + (b)(y + 7) + (c)(z - z₀) = 0.
Note: The value of z₀ is not provided in the given information, so the equation of the plane will be in terms of z.
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brainly if you can help me
Answer:
(1, 6)
Step-by-step explanation:
Use elimination or substitution (elimination is easier)
Write the coordinates of point B' after the following translation:
The coordinates of point B after translation is B(-3,5)
Translation means shifting , scaling and reflecting the parent function.
In shifting , the graph of parent function moves to new position
In scaling , shape of graph changes.
and in reflecting , a mirror image of parent function is generated across either x-axis and y-axis.
In the given graph,
Coordinates of point B before translation :
B is one unit above to the y-axis so,
B(0,1)
Now, translating 3 unit to the left :
left is negative side of x-axis so subtracting
-3 from point B
B(0-3 , 1) = B(-3,1)
now, translating 4 units towards up :
positive side of Y-axis so, adding 4
B(-3 , 1+4) = B(-3,5)
Hence , the coordinates of point B after translation 3 units to the left and 4 units towards up is (-3,5)
Given graph shows the shape of triangle after translation.
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Rashaad leans a 22-foot ladder against a wall so that it forms an angle of 65° with the ground. How high up the wall does the ladder reach?
Write the following number r in decimal representation if the 64-bit binary representation of r is given by:
The decimal representation of binary number is r = 1 x 2⁰ + 0 x 2¹ + 1 x 2² + 1 x 2³+ ............... + 1 x 2⁶³
To convert r to decimal representation, we need to use the following formula:
r = 1 x 2⁰ + 0 x 2¹ + 1 x 2² + 1 x 2³+ ............... + 1 x 2⁶³
In this formula, represents the i-th bit of the binary representation of r, and the exponent represents the place value of that bit. The rightmost bit, or the one with the smallest exponent, has a place value of 2⁰, while the leftmost bit, or the one with the largest exponent, has a place value of 2⁶³
Let's say we have the binary representation 1101. To convert this to decimal, we would use the formula:
r = 1 x 2⁰ + 0 x 2¹ + 1 x 2² + 1 x 2³
Simplifying this equation, we get:
r = 1 + 0 + 4 + 8
r = 13
So, the decimal representation of the binary number 1101 is 13.
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Complete Question:
Write the number r in decimal representation if the 64-bit binary representation of r by using the Boolean expressions.
recently, it has been discovered that some people have an extra type of cone other than the three that most people with normal color vision have. what might be different for a person with a fourth type of cone?
A person having Tetrachronacy or the Fourth type of cone will be able to see more colors outside the conventional visible spectrum.
Recently, it has been found that some individuals possess a fourth form of the cone in addition to the three that the majority of people with normal color vision do.
When a person has tetrachromacy, their retina has four cone types instead of the typical three that most people do. It is caused by a hereditary mutation and only affects women.
In the retina, cones are a particular kind of photoreceptor cell. They enable us to see in color. We can see fine details because of the macula, the area of our retina where cones are concentrated. The retina has about 6 million cones and 120 million rods. A photopigment in the fourth type of cone found in tetrachromats enables them to perceive more colors outside of the conventional visible spectrum. ROY G. BIV is a better-known name for the spectrum (Red, Orange, Yellow, Green, Blue, Indigo, and Violet).
Cone cells come in three different subtypes:
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T/F. a vector b inrm is in the range of t if and only if ax=b has a solution
The statement "a vector b in R^m is in the range of matrix A if and only if the equation Ax = b has a solution" is true.
The range of a matrix A, also known as the column space of A, consists of all possible linear combinations of the columns of A. If a vector b is in the range of A, it means that there exists a vector x such that Ax = b. This is because the range of A precisely represents all the possible outputs that can be obtained by multiplying A with a vector x.
Conversely, if the equation Ax = b has a solution, it means that b is in the range of A. The existence of a solution x guarantees that the vector b can be obtained as an output by multiplying A with x.
Therefore, the statement is true: a vector b in R^m is in the range of matrix A if and only if the equation Ax = b has a solution.
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HELP!!! WILL GIVE BRAINLIEST
How many solutions does
6 - 3x = 4 - x - 3 - 2x have?
A. Two solutions
B. Infinitely many solutions
C. One solution
D. No solutions
Answer:
remember to give me brainliest :p
one solution
Step-by-step explanation:
:)
Answer:
No solutions
Step-by-step explanation:
6 - 3x = 4 - x - 3 - 2x
6 - 3x = 1 - 3x
6 = 1
No solutions (6 does not equal 1)
square root of 342354456
Answer:
18502.8229198
Answer:
18502.82292
Step-by-step explanation:
calculator
give your answer in the simplest form and mixed number
\(2 \times \frac{2}{7} + 1 \times \frac{1}{4} \)
4 7/14
simplified to lowest terms:
11/14
GIVING BRAINLIEST
What is the solution to the system of linear equations graphed below?
Answer:
The first option so \((3\frac{1}{2}, -4)\) is the answer
Skills required: Graphing Knowledge, Systems Knowledge
Step-by-step explanation:
1) The solution to any system is the intersection between any 2 lines or functions. In this case, we are given two functions on a graph, and need to find the solution to them. That is the intersection.
2) We can see the intersection and see that the x-axis value for the coordinate point is around 3 1/2 (or 3.5 -- whatever you prefer), and that the y-axis value for the point is -4.
Therefore, the coordinate point is: \((3\frac{1}{2}, -4)\) since this answer best matches the coordinate values of that point.
==================================================================
Select the first option, have a nice day! :D
4x−2y=14 y=12x−1 solve by substitution
Answer:
x= -3/5
Step-by-step explanation:
4x-2y=14
y=12x-1
4x-2(12x-1)=14
4x-24x+2=14
4x-24x=12
-20x=12
×= -12/20
x= -3/5
Is the product of 5/7 and 6 less than 6?
Answer:
yes
Step-by-step explanation:
5/7*6 = 4.28
Answer:
yes
Step-by-step explanation:
5/7×6=4.28
which is less than 6
1. How many students have read more than 10 books
2. What percent of students have read at least 6 books
Answer:
1-6
2-87.5%
Step-by-step explanation:
with number one, you would count everything above 10 books, because its asking for more than.
with 2, you count the 6 book number, and everything above that. then you find the total (14/16) and divide it like that.
8÷2+(18−12)4−5×12 sos please help
Answer:
1,240 or 1240
Step-by-step explanation:
A student is attempting to factor a polynomial. Sample mathematical work is shown below. Which statement best applies to the sample mathematical work?
Given gh2 + g2h, the factors of the first term are g, h, and h2, and the factors of the second term are g, g2, and h. Thus, the greatest common factor is g. Dividing through by the greatest common factor, I get h2 + gh. Thus, the factored polynomial is g(h2 + gh).
A.
The student identified the greatest common factor incorrectly.
B.
The student incorrectly divided each term by the greatest common factor.
C.
The student failed to simplify the expression.
D.
The mathematical work shown is correct.
Answer:
Your answer is A
Step-By-Step
did it on edge
You started the month with $52 in your bank account. This month you made deposits of $8, $12 and $5. You also made withdrawals of $6, $20 and $4. How much money do you have now?
Answer:
$47
Step-by-step explanation:
Making a deposit is adding money to your bank account, so you added a total of 8+12+5=$25 to your account.
Withdrawals are when you take money out of your account, so you took a total of 6+20+4=$30 from your account.
This means that you now have 52+25-30=$47.
=========================================================
Explanation:
A = total deposits = 8+12+5 = 20+5 = 25 dollars
B = total withdrawals = 6+20+4 = 26+4 = 30 dollars
C = net change = A - B = 25 - 30 = -5
The negative net change means that you took more money out than you deposited. Therefore, your account balance goes down by that amount mentioned in variable C.
You started with $52, so your balance drops to 52-5 = 47 dollars
Here is another way to calculate the answer:
52+8+12+5-6-20-4 = 47
Please help it due asap
Helppppppp
Answer:
x = 30°
2x = 60°
3x = 90°
Step-by-step explanation:
GBF = CBD (opposite angle)
; 2x+x+3x = 180° (Size of straight angle)
6x = 180
x = 180÷6
x = 30°
substitution x in 2x ; 2×30 = 60°
substitution x in 3x ; 3×30 = 90°
hope it helps ☺️
Enter <, > or = to make the statement true. 17.001 [?] 17.0001
Answer:
17.001>17.0001
Answer:
17.001>17.0001
Step-by-step explanation:
17.001 is greater than 17.0001
a) The scale of the map is 1:1 000 000.
Calculate the distance in km between
(i) St Peter Port and St Helier
(ii) St Helier and Carteret.
b) Which town is 57 km from Cherbourg?
The distance between St Peter Port and St Helier is 37.5 km, between St Helier and Carteret is 25 km and St Peter’s Port or St. Aubin are 57 km away from Cherbourg.
We are given that the scale of the map is 1 : 1,000,000.
Now, we first need to find the distance between St Peter Port and St Helier.
We know that, on the map, it is 3.75 cm
So, in real world, it will be:
3.75 cm × 1,000,000 = 3750000 cm
Converting it into km, we get that:
3750000 cm = 37.5 km
Now we need to find the distance between St Helier and Carteret.
We know that, on the map, it is 2.5 cm
So, in real world, it will be:
2.5 cm × 1,000,000 = 2500000 cm
Converting it into km, we get that:
2500000 cm = 25 km
Now, we need to tell which town is 57 km ways from Cherbourg
We can see that two towns St Peter’s Port or St. Aubin is 5.7 cm away from it in the map.
So, they will be 57 km away in real world from it
Therefore, we get that the distance between St Peter Port and St Helier is 37.5 km, between St Helier and Carteret is 25 km and St Peter’s Port or St. Aubin are 57 km away from Cherbourg.
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note: i dont want to answer the question below i want you to
explain only my questions i will ask now...
b1=10
62=8
b3-a=15
b3-b=10
b4=9
i want to ask... now in question i want to
calculate
The given information consists of a series of equations involving variables b1, b3, and b4, as well as the constant values 8, 9, and 10. The objective is to calculate the value of b3.
To find the value of b3, we need to analyze the given equations and use algebraic techniques to solve for the unknown variable.
From the equations given, we can observe that b1 = 10, b4 = 9, and 62 = 8. These values provide fixed points of reference.
Next, we examine the equations involving b3. We have two equations: b3 - a = 15 and b3 - b = 10. However, there is no information provided about the values of a and b. Without additional information or constraints, we cannot determine the specific value of b3.
It is important to note that the solution to the problem depends on having all the necessary information or additional equations that can be used to solve for the unknowns. In this case, the lack of information about the values of a and b prevents us from calculating the exact value of b3.
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Leave answer in the simplest radical form.
\(\frac{7x^-^3^/^2y^5^/^2z^-^2^/^3}{56x^-^1^/^2y^1^/^4}\)
\(\cfrac{7x^{-\frac{3}{2}} ~~ y^{\frac{5}{2}} ~~ z^{-\frac{2}{3}}}{56 x^{-\frac{1}{2}} ~~ y^{\frac{1}{4}}}\implies \cfrac{7}{56}\cdot \cfrac{y^{\frac{5}{2}} ~~ y^{-\frac{1}{4}}}{x^{-\frac{1}{2}} ~~ x^{\frac{3}{2}} ~~ z^{\frac{2}{3}}}\implies \cfrac{1}{8}\cfrac{y^{\frac{5}{2}-\frac{1}{4}}}{x^{-\frac{1}{2}+\frac{3}{2}}~~ z^{\frac{2}{3}}}\)
\(\cfrac{y^{\frac{9}{4}}}{8x z^{\frac{2}{3}}}\implies \cfrac{\sqrt[4]{y^9}}{8x\sqrt[3]{z^2}}\implies \cfrac{\sqrt[4]{y (y^2)^4}}{8x\sqrt[3]{z^2}}\implies \cfrac{y^2 \sqrt[4]{y}}{8x\sqrt[3]{z^2}}\)
If a sequence of 8 consecutive odd integers with increasing values has 9 as its seventh term. What is the sum of the terms of the sequence?
Answer:
\(Sum = 32\)
Step-by-step explanation:
Given
Sequence = Consecutive Odds
\(T_7 = 9\)
Required
The sum of the terms
A sequence of odd number has a difference of 2. So, the sequence is represented as:
\(S = \{-3,-1,1,3,5,7,9,11\}\)
Add up all terms in the sequence
\(Sum = -3-1+1+3+5+7+9+11\)
\(Sum = 32\)