15/x = 20/100
15*100 = 20*x
1500 = 20x
1500/20 = 20x/20
75 = x
15/75 = 20/100
the expected number of couples who met online is 75
Answer: (-x, y-7)
<u>Step-by-step explanation:</u>
A reflection across the y-axis changes the sign of the x-value.
(x, y) → (-x, y)
Shifting down 7 units subtracts 7 from the y-value.
(-x, y) → (-x, y-7)
Answer:
B
Step-by-step explanation:
equation for volume of a cone = 
plug in - 
Answer:
-3
Step-by-step explanation:
My knowledge ;D
Answer:
The first choice.
Step-by-step explanation:
The area is multiplied by (1/2)^2 = 1/4.
This is because lengths are one dimensional and areas are 2 dimensional.
