Answer:45
Step-by-step explanation:
y varies directly as x^2
y=k x x^2
When y=5 x=3
5=k x 3^2
5=k x 9
K=5/9
Relationship is y=5x^2/9
y=(5x9^2) ➗ 9
y=(5x81) ➗ 9
y=405 ➗ 9
y=45
Answer:
x = 20
Step-by-step explanation:
The scale factor is 2.5. The arrow on the right is 2.5 times bigger than the arrow on the left. So, you would multiply 8 by 2.5 to find x.
8 x 2.5 = 20
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Answer:
Andrew purchased 12 pens.
Step-by-step explanation:
First, subtract 5.72 from 20 to get $14.28. Then, divide that by 1.19 to get 12. So, Andrew purchased 12 pens.
Answer:
n = 3
Step-by-step explanation:
Ratio from Triangle A to Triangle B is 2:1.
n+2 = 5
n = 3
