Answer:
Step-by-step explanation:
n=n/2 +7
Phone card = $20
You need to minus 17.92 from 20 = $2.08
$2.08 / 0.13 = how many minutes
= 16
Answer:
10/63
Step-by-step explanation:
no common factors between 2 & 9
no common factors between 5 & 7
thus no simplification at the end
5*2 / 7*9 = 10/63
Answer:

Step-by-step explanation:
Given
Shape: dome

Required
The surface area
This is calculated as:

So, we have:

