Answer: A
Step-by-step explanation:
Answer:
The diameter will increase at a rate of 1/30π cm/min
Step-by-step explanation:
Here we want to calculate the rate at which the diameter will increase
Mathematically, the area of a sphere is given as;
A = 4πr^2
But r = d/2
so A = 4 * π * d/2 * d/2 = πd^2
dA/d(d) = 2πd
Thus dd/dA = 1/2πd = 1/2 * π * 15 = 1/30π
Given dA/dt = 10
Mathematically;
d(d)/dt = d(d)/dA * dA/dt
dd/dt = 1/30π * 10 = 10/30π = 1/3π cm/min
Hey there!
8x + 1 + 7x + 4
COMBINE your LIKE TERMS
(8x + 7x) + (1 + 4)
8x + 7x = 15x
1 + 4 = 5
Answer: 15x + 5 ☑️
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