Answer:
Step-by-step explanation:
The difference between 9 thirty-sevens and 8 thirty-sevens can be calculated by subtracting 8 thirty-sevens from 9 thirty-sevens.
9 thirty-sevens minus 8 thirty-sevens is 1 thirty-sevens.
So the answer is 37.
Answer:
x = 61
Step-by-step explanation:
0.5(x + 7) + 9 = 43
0.5x + 3.5 + 9.0 = 43
0.5x + 12.5 = 43.0
0.5x = 30.5
x = 30.5 / 0.5
x = 61
Answer: A) 16 in by 10 in
<u>Step-by-step explanation:</u>
Set up the proportion for 24 ft and then for 15 ft:
Answer:
A = 9π cm²
Step-by-step explanation:
Given that area (A) varies directly with r² then the equation relating them is
A = kr² ← k is the constant of variation
To find k use the condition A = 4π when r = 2 , then
4π = k × 2² = 4k ( divide both sides by 4 )
π = k
A = πr² ← equation
when r = 3 , then
A = π × 3² = 9π cm²