Answer:
21
Step-by-step explanation:
12 + 9 = 21
that is the distance he ran so that is the distance he will run back
( i hope that helped)
Answer:


Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 500
Standard Deviation, σ = 100
We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.
Formula:

We have to find the value of x such that the probability is 0.64
P(X<x) = 0.64
Calculation the value from standard normal z table, we have, 


I believe it’s 70 because a straight like always adds up to 180 so 180-110=70
Answer:
Step-by-step explanation:
Draw it on the papaer, and you will find AC=BC*cot∠B