The heights of all the 11-year-old boys in the United States are normally distributed with a mean of 57 inches and a standard deviation of 2.5 inches. What's the probability that a boy chosen at random from that age group will have a height less than 64.5 inches?
A. 97.72%
B. 99.87%
C. 49.87%
D. 0.13%

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

answer: 10 meter

step-by-step explanation:

need details

c: y > - 1/6x + 1

step-by-step explanation:

dashed line - meaning this < or > also not equal

solid line - meaning this < or > also equal

your answer is c because y > means up & it's shaded up, but y < means down

hope this ! : )