Answers
Answer:
a. is the answer
Step-by-step explanation:
:)
Related Questions
3/2 equals 4x x=
?????
Answers
Answer:
0.375
Step-by-step explanation:
3/2 equals 1 and a half, and 1 and a half divided by 4 will get you 0.325
Answer:
4x - 2 = 3x + 1. Solution We substitute the value 3 for x in the equation and see if the left-hand member equals the right-hand member. 4(3) - 2 = 3(3) + 1.
A researcher recorded the number of e-mails received in a month and the number of online purchases made during that month for 50 people with an online presence. The resulting data were used to conduct a hypothesis test to investigate whether the slope of the population regression line relating number of e-mails received to number of online purchases is positive. What are the correct hypotheses for the test?
a. H0:β1=0Ha:β1≠0
b. H0:β1=0Ha:β1>0
c. H0:β1=0Ha:β1<0
d. H0:β1>0Ha:β1=0
e. H0:b1=0Ha:b1≠0
Answers
Answer:
B
Step-by-step explanation:
College Board
Brad and Terrence are working on some math problems. Today, Terrence completed 15 math problems. This is 3 more than twice the number of problems that Brad completed. A)Write an equation that can used to find , b, the number of math problems that Brad completed.
Answers
Answer:
2b + 3 = 15
b = 6
Step-by-step explanation:
I JUST REALLY MEED HELP I GIVE BRAINLIEST
A department store sale advertises 1/2 off Al clearance items. Marie bought a clearance item and used a coupon for $5 off. She pays a total of $11. What was the original price of the clearance item?
Answers
Answer:
32 dollars
Step-by-step explanation:
Let's say the original price is x
Create an equation:
\(\frac{1}{2}x -5 = 11\)
Add 5 on both sides
\(\frac{1}{2}x = 16\)
x = 32
The answer is 32 dollars
Hope this helps :)
Have a nice day!
Any help? I need to describe the change of the equation, in terms of it getting thinner (>) or wider (<). I don't exactly understand how to do this, can anyone explain?
Answers
9514 1404 393
Answer:
no change to the width of the curve
Step-by-step explanation:
Your terminology and use of symbols (>, <) are unusual, so we're not sure what your question is.
The equation represents a transformation of the parent function
y = x²
The transformation (replacing x with (x-4)) is a translation right 4 units. This can be seen in the attached graph. The "parent function" is shown in red. Your function is shown in blue.
Nothing about this transformation changes the width of the curve, so it is neither thinner nor wider than it was originally. The description usually used if the curve is narrower or wider is "horizontal compression" or "horizontal expansion."
The curve does get wider for larger y-values. It is said to "open upward".
__
Additional comment
The symbols < and > stand for "is less than" and "is greater than", respectively. They are occasionally used as "angle brackets" to identify vectors or tokens of one sort or another. Sometimes, they are used to signify an angle when the appropriate ∠ symbol is not available. This is the first time in many years of studying math that I have seen them in the context of "thinner" and "wider."
Would any kind person like to help a confused teen :( Help plsss
Answers
You know this because the starting point is on the positive teo on the y-axis. The slope from left to right is goinf up making it positive.
find the area of a radius of 5 feet use 3.14 for pi
Answers
Answer: A=78. 5 \(feet^{2}\)
Step-by-step explanation:
What is -3(2a + 5b - 4y - 2)?
Answers
Answer: -6a-15b+12y+6
Step-by-step explanation:
An isosceles right triangle has a third side measurement of 25 inches and a perimeter of 85 inches. The leg of the dilated triangle measures 6 inches. What is the perimeter of the dilated triangle?
Answers
Given that the third side of the original triangle measures 25 inches, we can set up the following equation based on the perimeter:
x + x + 25 = 85
Simplifying the equation:
2x + 25 = 85
Subtracting 25 from both sides:
2x = 60
Dividing both sides by 2:
x = 30
So, the length of each leg of the original triangle is 30 inches.
Now, let's consider the dilated triangle. We are told that the leg of the dilated triangle measures 6 inches. Let's assume the scale factor of the dilation is "k."
The length of each leg of the dilated triangle can be found by multiplying the length of the corresponding leg of the original triangle by the scale factor:
Leg of dilated triangle = k * Leg of original triangle
Leg of dilated triangle = k * 30
Given that the leg of the dilated triangle measures 6 inches, we can set up the following equation:
k * 30 = 6
Dividing both sides by 30:
k = 6/30
Simplifying:
k = 1/5
So, the scale factor of the dilation is 1/5.
Now, to find the perimeter of the dilated triangle, we need to multiply the length of each side of the original triangle by the scale factor and sum them up:
Perimeter of dilated triangle = 2 * (k * 30) + k * 25
Plugging in the values:
Perimeter of dilated triangle = 2 * (1/5 * 30) + 1/5 * 25
Simplifying:
Perimeter of dilated triangle = 2 * 6 + 5
Perimeter of dilated triangle = 12 + 5
Perimeter of dilated triangle = 17 inches
Therefore, the perimeter of the dilated triangle is 17 inches.
Solve for b
10, b, 150degrees, 12degrees
Answers
Hello!
We have all angles of the triangle:
We will use the law of cosines. This relation is valid for all sides of any t
We have:
angle A = 12°
côté a = 10
angle B = 150°
This is therefore the first case of application of the sine law.
So:
\(\sf \dfrac{b}{sin~B} = \dfrac{a}{sin~A}\)
\(\sf b =\dfrac{sin~B~*~a}{sin~A} = \dfrac{sin~150~*~10cm}{sin~12} = \dfrac{arcsin~0.5~*~10cm}{arcsin~0.2079116908} = \dfrac{30~*~10cm}{12} = \dfrac{300cm}{12} = \boxed{\sf25cm}\)
b = 25cm
Use the following information to answer the next question. In the process, what is the total distance that Jeremy covers?Use the following information to answer the next question.
In the process, what is the total distance that Jeremy covers?
Answers
The total distance covered by Jeremy is 1320 m
What is a line segment ?
A line segment in geometry is bounded by two separate points on a line. Another way to describe a line segment is as a piece of the line that joins two points. A line segment has two fixed or distinct endpoints while a line has no endpoints and can stretch in both directions indefinitely.
For sapling 1 = No distance is covered.
For sapling 2, distance covered = 10 m
Return distance=10 m
For sapling 3, distance covered =20 m
Return distance=20 m and so on
Thus the distances covered for saplings can be represented as : 0,2(10), 2(20),...i.e. 0,20, 40,...
Therefore total distance covered by Jeremy for planting 12 saplings and coming back to original position = S 12
Total distance covered = 122 [2(0) + (12 − 1) 20 ]
Total distance covered = 6 (11)(20) = 1320 m
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Complete question:
There are 12 saplings to be planted in a straight line at an interval of 10 m between
two consecutive saplings. Jeremy can carry only one sapling at a time and he has to
come back to the original point to take the next sapling. He plants 12 saplings in this
manner, planting the first sapling at the original point. After planting all the saplings,
he comes back at the original point,
In the process, what is the total distance that Jeremy covers?
Question 3 A 44-metres long fire-fighting ladder is leaned against a building, as shown in the diagram. The base of the ladder is 7 metres from the building and 3 metres above the ground. How high on the building will the ladder reach?
Answers
The ladder will reach a Height of approximately 43.46 meters on the building.
To find out how high on the building the ladder will reach, we can use the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
In this case, the ladder forms a right triangle with the ground and the building. The base of the ladder is 7 meters, the height of the building is what we need to find, and the length of the ladder is given as 44 meters.
Using the Pythagorean theorem, we can set up the equation:
(Height of the building)^2 + 7^2 = 44^2
Simplifying the equation, we have:
(Height of the building)^2 + 49 = 1936
Subtracting 49 from both sides, we get:
(Height of the building)^2 = 1887
To find the height of the building, we take the square root of both sides:
Height of the building = √1887
Calculating the square root of 1887, we find that the height of the building is approximately 43.46 meters.
Therefore, the ladder will reach a height of approximately 43.46 meters on the building.
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How much money would Mrs.
Carthill save by buying 30 20-
pack boxes of lemon ice-blocks
priced at $14 per box instead
of 100 6-pack boxes priced at
$5.40 per box?
Answers
Mrs. Carthill saved $120
how do you solve 4√-6 x 2√-3?
Answers
then the answer will be -24√2
Lois and her team used the number of red candies in a
small 9 ounce bag to predict the number of red candies in
a large 33 ounce bag. If Lois counted 12 red candies in the
small bag, Predict the number of red candies in the large bag.
Use proportional reasoning and show algebraic work.
Answers
Using proportional reasoning, we can predict that there will be 40 red candies in the large bag.
Using proportional reasoning, we can set up and solve the following equation to determine the number of red candies in the large bag:
P = Proportion of red candies in the large bag
R = Red candies in the small bag
R × (33/9) = P
12 × (33/9) = P
P = 40 red candies in the large bag
Therefore, using proportional reasoning, we can predict that there will be 40 red candies in the large bag.
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The scale of a map says that 4 cm represents 6km. What distance is on the map (in centimeters) respresents an actual distance of 4 kilometers
Answers
Answer:
2 2/3cm =4km
Step-by-step explanation:
0.67 = 1km so you would do .67 x 4 then turn the answer into a fraction
For the positive integer $n$, let $\langle n\rangle$ denote the sum of all the positive divisors of $n$ with the exception of $n$ itself. For example, $\langle 4\rangle=1+2=3$ and $\langle 12 \rangle =1+2+3+4+6=16$. What is $\langle\langle\langle 6\rangle\rangle\rangle?
A. 6B. 12C. 24D. 32E. 36
Answers
For the positive integer n, \(\langle n\rangle\) denote the sum of all the positive divisors of n with the exception of n itself is an option (A). 6.
We start by calculating the value of \(\langle 6 \rangle\), which is the sum of the positive divisors of 6 excluding 6 itself.
Since the divisors of 6 are 1, 2, 3, and 6, we have \(\langle 6 \rangle = 1 + 2 + 3 = 6\).
Next, we need to calculate \(\langle\langle 6 \rangle\rangle\), which is the sum of the positive divisors of 6 excluding 6 itself, and the positive divisors of 6 excluding 6 itself and \(\langle 6 \rangle\).
The divisors of 6 excluding 6 itself are 1, 2, and 3, so \(\langle\langle 6 \rangle\rangle\) is the sum of the positive divisors of 1, 2, and 3.
The divisors of 1 are just 1, the divisors of 2 are 1 and 2, and the divisors of 3 are 1 and 3.
Thus, \(\langle\langle 6 \rangle\rangle = 1 + 2 + 1 + 3 = 7\).
Finally, we need to calculate \(\langle\langle\langle 6\rangle\rangle\rangle\),
which is the sum of the positive divisors of 1, 2, 3, and 7.
The divisors of 1 are just 1, the divisors of 2 are 1 and 2, the divisors of 3 are 1 and 3, and the only divisor of 7 is 1.
Thus, \(\langle\langle\langle 6\rangle\rangle\rangle = 1 + 2 + 1 + 3 + 1 = \boxed{8}\).
For the positive integer n, \(\langle n\rangle\) denote the sum of all the positive divisors of n with the exception of n itself is 6
Hence option A is correct choice.
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Determine whether a quadratic model exists for each set of values. If so, write the model.
f(-2)=16, f(0)=0, f(1)=4
Answers
Answer:
\(f(x)=4x^2\)
Step-by-step explanation:
Quadratic Model
The quadratic function can be expressed in the form:
\(f(x)=ax^2+bx+c\)
Where a,b, and c are constants to be determined using the points through which the function passes.
We have the points (-2,16) (0,0) (1,4). To find the values of a,b,c we just substitute the values of x and y and solve the system of equations.
Point (0,0):
\(f(0)=a*0^2+b*0+c=0\)
It follows that
c=0
Point (-2,16):
\(f(0)=a*(-2)^2+b*(-2)+c=16\)
Operating:
\(a*(4)+b*(-2)+c=16\)
Since c=0:
\(4a-2b=16\)
Divide by 2:
\(2a-b=8\qquad\qquad [1]\)
Point (1,4):
\(f(1)=a*(1)^2+b*(1)+c=4\)
\(a*(1)+b*(1)+c=4\)
Since c=0:
\(a+b=4\qquad\qquad [2]\)
Adding [1] + [2]:
2a+a=12
3a=12
a=12/3=4
a=4
From [2]
b=4-a
b=4-4=0
b=0
The model is:
\(\boxed{f(x)=4x^2}\)
There are 8 people participating in a focus group for a new software product related to the health system, 3 of them are software engineers, 2 of them are nurses, 1 of them is a doctor, and the remanining 2 people are technicians. In how many ways they can be seated in a row so that no two software engineers are together? Show all your work to get credit
Answers
In 480 ways people can be seated in a row so that no two software engineers are together.
We have given that there are 8 people participating in a focus group, 3 of them are software engineers, 2 of them are nurses, 1 is doctor and 2 are technicians.
So the 3 software engineers can sit in 3! ways,
2 nurses can sit in 2! ways,
doctor can sit in 1! way and
2 technicians can sit in 2! ways.
We have to find that how many ways they can sit such that no two software can sit together.
So we first place 5 people in a row and software engineers has to sit between them so no two software engineers are to be sited together.
We get that in 6 places they can sit in 6C3 ways
i.e 6C3 = 20 (by formula of combination)
Therefore total ways are,
6 × 2 × 1 ×2 × 20 = 480.
Hence in 480 ways people can be seated in a row so that no two engineers are together.
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1. Find extrema and intervals of increasing and decreasing the function
\(y = \frac{ {e }^ { - (x + 2)} }{x + 2} \)
2. Find inflection points and intervals of concavity and convexity of the function:
\(y = \frac{2x - 1}{(x - 1) ^{2} } \)
Answers
The function y = (e⁻⁽ˣ⁺²⁾) / x + 2 increases along intervals of (-∞, 3) and decreases along (-3, -2), (-2, ∞) and the function y = 2x - 1 / (x - 1)² has no inflection points but concave downwards along (-∞, 1) ∪ (1 ,∞)
Extrema and Intervals of a FunctionAn extremum (or extreme value) of a function is a point at which a maximum or minimum value of the function is obtained in some interval. A local extremum (or relative extremum) of a function is the point at which a maximum or minimum value of the function in some open interval containing the point is obtained.
The function given;
y = (e⁻⁽ˣ⁺²⁾) / x + 2
The extrema and intervals of increase or decrease of this function are
(-1, 1.63) and it increases along (-∞, 3) and decreases along (-3, -2), (-2, ∞)
2. The inflection points and intervals of concavity and convexity of the function
y = 2x - 1 / (x - 1)² are
The function has no inflection pointsIt's concave downwards along (-∞, 1) ∪ (1 ,∞)Learn more on intervals of a function here;
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Item 11 In the table, Pattern A uses the rule "add 5" and Pattern B uses the rule "add 10." Pattern A 10 15 20 25 30 Pattern B 20 30 40 50 60 Which statement is true? Every term in Pattern B is 12 the corresponding term in Pattern A. Every term in Pattern B is 10 times the corresponding term in Pattern A. Every term in Pattern B is 2 times the corresponding term in Pattern A. Every term in Pattern B is 10 more than the corresponding term in Pattern A. PLESAAAA HELP I NEED TO PASS 5 GRADE IF I FAIL I WONT PASS PLSSSSSSSSSSSSSS tysm!
Answers
The Pattern B is the twice of the Pattern A. Then the correct option is C.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
Item 11 In the table,
Pattern A uses the rule "add 5" and Pattern B uses the rule "add 10".
Pattern A 10 15 20 25 30
Pattern B 20 30 40 50 60
Then the Pattern B is the twice of the Pattern A.
Then the correct option is C.
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pls helpppppp i begggg
Answers
Answer
x Is less than 4
Step-by-step explanation:
It will be an open circle and the arrow is going the left direction on the number 4
Multiply (2.5x10^-5)x(2x10^-4)
Answers
Answer:7·10^(-9), or
7
----------
10^9
Step-by-step explanation:
Multiply 3.5 and 2 together, obtaining 7.
Then add the exponents -6 and -4, obtaining -10.
The product is thus 7·10^(-10), or, after simplification,
7·10^(-9), or
7
----------
10^9
you want buy some rice a. A 6-ounce package costs $2.10. A 14-ounce package costs $4.76. A 26 -ounce package costs $9.36. Which package is the best buy?
Answers
Answer:
The most expensive one per ounce is the last one and the cheapest one is the second one
Step-by-step explanation:
Suppose X~N(12,2). The empirical rule stated that about 68% of the x values lie within one stands deviation of the mean. Between what x Values does 68% of the data lie?
Answers
Answer:
Suppose X ~ N(12,2) represents a normal distribution with mean 12 and standard deviation 2. According to the empirical rule, about 68% of the x values lie within one standard deviation of the mean .
We can calculate the endpoints of the interval that represents one standard deviation from the mean as follows:
Lower endpoint: 12 - 2 = 10
Upper endpoint: 12 + 2 = 14
Therefore, about 68% of the x values lie between 10 and 14 1.
Step-by-step explanation:
Amy and Zack each have 24 feet of fencing for their rectangular gardens. Amy makes her fence 6 feet long. Zack makes his fence 8 feet long. Whose garden has the better area? How much greater?
Answers
Answer:
The answer is Zack garden
12x-4y-2z-5y+x like terms
Answers
The box plot below represents some data set. What percentage of the data values are between 110 and 170?
Answers
The percentage of the data values are between 110 and 170 = 37.5%
We know that in the box plot, the first quartile is nothing but 25% from smallest to largest of data values.
The second quartile is nothing but between 25.1% and 50% (i.e., till median)
The third quartile: 51% to 75% (above the median)
And the fourth quartile: 25% of largest numbers.
In the attached box plot, we can observe that between two numbers on the number line there are 5 equal parts.
So, each unit length measures 10 units.
Also, the median of the data = 110
We need to find the percentage of the data values are between 110 and 170.
i.e., the percentage of the data values are in the third quartile.
The range of this box plot is: 190 - 30 = 160
The data values are between 110 and 170 = 60
Using percentage formula,
P = (60/160) × 100
P = 37.5%
This is the required percentage.
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Find the complete question below.
22. The population, P, of the city of Hazelton has grown according to the mathematical model
P = 65,000(1.075)', where t is the number of years since 2005.
a) At what percentage is the population growing? [1 mark]
Answers
Answer:
7.5%
Step-by-step explanation:
The exponent 't' is applied to 1.0751.075 is the rate at which it increasesDecimal → % = x 1001.075 × 100 = 107.5%107.5% - 100% = 7.5%If u answer this, ill give you 15
Answers
Answer:
70%
Step-by-step explanation:
As they are 10 pieces and only 7 are shaded me need to multiply 7x10 and it's 70