Answer:
12 pi
Step-by-step explanation:
volume of sphere = 4/3 pi r2
4/3 pi 3 x 3
12 pi unit square
Answer:
Sophia gets 7,150
Step-by-step explanation:
If the equation of a line is written in the

form,

is the y-intercept.

The y-intercept is -1. The line crosses the y-axis at the point (0,-1).
Answer:
8
Step-by-step explanation:
The fact that DE is perpendicular to AC means triangles AED and CED are congruent and side AD is equal in length to side CD.
5x -20 = 2x +4
3x = 24 . . . . . . . add 20-2x
x = 8 . . . . . . . . . .divide by 3
The value of x is 8.