Answer:
(x+1)(2x-3)(3x-5)
Step-by-step explanation:
Step-by-step explanation:
We distribute first:
(9.5*a)+(9.5*4)= 9.5a+38
We can subtract the a from 9.5a.
9.5a-a=8.5a
The answer is 8.5a+38
I'm so sorry if i'm wrong!
Answer:
D. 12
Step-by-step explanation:
S=4πR2
<span>V=<span>43</span>π<span>R3</span></span>
To double the volume, we have to increase the radius by multiplying it by <span>3<span>√2</span></span>.
let <span><span>R1</span>=R<span>3<span>√2</span></span></span>
Then the volume of a sphere with radius <span>R1</span> will be
<span><span>V1</span>=<span>43</span>π<span>R<span>31</span></span>=<span>43</span>π<span><span>(R<span>3<span>√2</span></span>)</span>3</span>=<span>83</span>π<span>R3</span></span> - twice larger than original volume.
With radius <span><span>R1</span>=R<span>3<span>√2</span></span></span> the surface area of a new sphere will be
<span>4π<span>R<span>21</span></span>=4π<span>R2</span><span><span>(<span>3<span>√2</span></span>)</span>2</span>=4<span>3<span>√4</span></span>π<span>R2</span></span>
The ratio of the new surface area to the old one equals to
<span><span><span>4<span>3<span>√4</span></span>π<span>R2</span></span><span>4π<span>R2</span></span></span>=<span>3<span>√<span>4</span></span></span></span>