Answer:
10 gallons of gas
Step-by-step explanation:
Create a proportion, where x is the number of gallons she will use if she drives 75 miles:
= 
Cross multiply and solve for x:
15x = 150
x = 10
So, she will have to use 10 gallons of gas to drive 75 miles
Answer:
7.36
Step-by-step explanation:
z-score is:
z = (x − μ) / σ
Given that z = -1.63, x = 23, and μ = 35:
-1.63 = (23 − 35) / σ
σ ≈ 7.36
Answer:
up and down is positive, side by side is negitive diagnoal lines are negitive. so undefined is anything under the x axis that doesn't go over the line
The average number of pins he knocks down per role is about 7 1/3
10 + 9 + 7 = 22
22 divided by 3 = 7 1/3
so his pin total would probably be 44