Answer:
x = 12
Step-by-step explanation:
Given x varies as the cube root of y then the equation relating them is
x = k![\sqrt[3]{y}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7By%7D)
← k is the constant of variation
To find k use the condition x = 6 when y = 8, thus
k = ![\frac{x}{\sqrt[3]{y} }](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B%5Csqrt%5B3%5D%7By%7D%20%7D)
= ![\frac{6}{\sqrt[3]{8} }](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7B%5Csqrt%5B3%5D%7B8%7D%20%7D)
= 
= 3
x = 3 ← equation of variation
When y = 64, then
x = 3 × ![\sqrt[3]{64}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B64%7D)
= 3 × 4 = 12
Step-by-step explanation:
radius=2.9 cm
circumference=2πr
=2*22/7*2.9
=18.2 cm
Answer:
i think it would be B
Step-by-step explanation:
So, what we do here is divide 70 / 6.5
70 / 6.5 = 10.7692308 (approximately). Then, multiply this number by 8
10.7692308 x 8 = 86.15 (approximately). So, C. 86.15 is the correct answer!
