Answer:
x = 9.6
Step-by-step explanation:
Given that x varies directly as y then the equation relating them is
x = ky ← k is the constant of variation
To find k use the condition x = 4 when y = 15
k =
= 
x =
y ← equation of variation
When y = 36, then
x =
× 36 =
= 9.6
Answer:
15.9778
≈ 16
Step-by-step explanation:
Formula= a² + b² = c²
7.7² + 14² = 255.29
√255.29 = 15.9778 or ≈16
Answer:
73.3
Step-by-step explanation:
7%=7÷100=0.07 ×60=4.2
15%=15÷100=0.15×60=9
add you answers to 60 and to should get 73.2