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Charra [1.4K]
3 years ago
9

-6-7(c+10) A. 64-7c B. -76-7C C. 4-13C D. -16-13c Help?

Mathematics
1 answer:
Maurinko [17]3 years ago
6 0

Answer:

B. -76-7C

Step-by-step explanation:

-6-7(c+10)

Distribute the 7

-6-7c-70

Combine like terms

-7c-76

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Don’t really know what linear functions are
kondaur [170]

Answer:

The rate of change of f(x) is greater than that of g(x)

They have the same y intercept of 14

Step-by-step explanation:

Given

g(x) = -\frac{1}{2}x + 14

Table for function f(x)

Required

Compare their rate of change and intercept

For g(x), we have:

g(x) = -\frac{1}{2}x + 14

The form of an equation is:

y = mx + b

Where

m = slope

b =y\ intercept

So:

m = -\frac{1}{4}

b = 14

For f(x): Start by calculating the slope (m)

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{17-16}{6-4}

m = \frac{1}{2}

The intercept is calculated using:

m = \frac{y_2 - y_1}{x_2 - x_1}

Where

(x_1,y_1) = (-2,13)

(x_2,y_2) = (0,y) --- we want to solve for y

So:

\frac{1}{2} = \frac{y - 13}{0 --2}

\frac{1}{2} = \frac{y - 13}{2}

Multiply both sides by 2

1 =y - 13

Make y the subject

y =1 + 13

y = 14

So, we have:

m = -\frac{1}{4} and b = 14 -- for g(x)

m = \frac{1}{2} and y = 14 --- for f(x)

By comparison:

The rate of change (i.e. slope) of f(x) is greater than that of g(x) because 1/2 > -1/2

They have the same y intercept of 14

3 0
3 years ago
What sequence of transformations map ABC to PQR?
ValentinkaMS [17]

Answer:

The answer is C

Step-by-step explanation:

Because... if you start in point A and do what C say it will bring you to the same point as the second triangle

Hopes this helps❤️

8 0
3 years ago
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Easy it’s A idjdjdjsjsj
7 0
3 years ago
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Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights
Fed [463]

Answer:

a) 615

b) 715

c) 344

Step-by-step explanation:

According to the Question,

  • Given that,  A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 732 babies born in New York. The mean weight was 3311 grams with a standard deviation of 860 grams

  • Since the distribution is approximately bell-shaped, we can use the normal distribution and calculate the Z scores for each scenario.

Z = (x - mean)/standard deviation

Now,

For x = 4171,  Z = (4171 - 3311)/860 = 1  

  • P(Z < 1) using Z table for areas for the standard normal distribution, you will get 0.8413.

Next, multiply that by the sample size of 732.

  • Therefore 732(0.8413) = 615.8316, so approximately 615 will weigh less than 4171  

 

  • For part b, use the same method except x is now 1591.    

Z = (1581 - 3311)/860 = -2    

  • P(Z > -2) , using the Z table is 1 - 0.0228 = 0.9772 . Now 732(0.9772) = 715.3104, so approximately 715 will weigh more than 1591.

 

  • For part c, we now need to get two Z scores, one for 3311 and another for 5031.

Z1 = (3311 - 3311)/860 = 0

Z2 = (5031 - 3311)/860= 2  

P(0 ≤ Z ≤ 2) = 0.9772 - 0.5000 = 0.4772

  approximately 47% fall between 0 and 1 standard deviation, so take 0.47 times 732 ⇒ 732×0.47 = 344.

5 0
2 years ago
25 is 55% of what number
mart [117]

Answer:

45.45

Step-by-step explanation:

25 is 55% of What Number? - 25 is 55% of 45.45. 100% of 45.45 is 45.45, therefore 55 percent of 45.45 equals 25.

5 0
2 years ago
Read 2 more answers
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