3 years ago

What would be the solution to this problem

1 answer:

7 0

Angle A: 60 degrees
Angle B: 30 degrees
Angle C: 90 degrees

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dezoksy [38]

Can you send a picture, because this doesn’t make it clear what the options are/what to do

7 0

3 years ago

nata0808 [166]

I suspect 4/2 should actually be 4/3, since 4/2 = 2, while 4/3 would make V the volume of a sphere with radius r. But I'll stick with what's given:

$\displaystyle \frac{dV}{dr} = \lim_{h\to0} \frac{2\pi(r+h)^3-2\pi r^3}{h}$

$\displaystyle \frac{dV}{dr} = 2\pi \lim_{h\to0} \frac{(r^3+3r^2h+3rh^2+h^3)- r^3}{h}$

$\displaystyle \frac{dV}{dr} = 2\pi \lim_{h\to0} \frac{3r^2h+3rh^2+h^3}{h}$

$\displaystyle \frac{dV}{dr} = 2\pi \lim_{h\to0} (3r^2+3rh+h^2)$

$\displaystyle \frac{dV}{dr} = 2\pi \cdot 3r^2 = \boxed{6\pi r^2}$

In Mathematica, you can check this result via

D[4/2*Pi*r^3, r]

3 0

3 years ago

AURORKA [14]

This is standard form

8 0

4 years ago

romanna [79]

Answer:

$100 is less than or equal to x

7 0

3 years ago

ASHA 777 [7]

(2x+1)(x+5) is the answer.

4 0

3 years ago