Answer:
1: d. 3054^3
2: d. 20x
Step-by-step explanation:
1)
Well to find the volume of a sphere we use the following formula,
[tex]\frac{4}{3}\pi r^3[/tex]
So the radius is 9.
9*9*9 = 729
729*pi = 2290.22104447
So it is 2290 rounded to the nearest whole number.
2290 * 4/3 = 3053.3333333
Thus,
the answer is d. [tex]3054^3[/tex]
____________________________________________________________
So we have to factor 25x^2 - 9,
which is [tex]\left(5x+3\right)\left(5x-3\right)[/tex].
So if the l and w are 5x + 3 and 5x - 3,
= 10x
10x + 10x = 20x,
Thus,
the answer is d. 20x
Hope this helps :)
