Question

Please help meee, this is my homework . (Geometry) ... I’ll rate brainliest

Answer 1

1. Volume of the sphere

$V = \frac 4 3 \pi r^3 = \frac 4 3 \pi ( 8^ 3) = \dfrac{2048 \pi}{3} \approx 2144.66$

Choice c

2. Algebra making a token effort to pretend to be geometry. Complementary angles add to 90 degrees.

(x+1) + (x-3)=90

2x -2 = 90

2x = 92

x = 46

Angles x+1=47 and x-3=43

Choice b

3. midpoint A=-5, E=5

The midpoint is just the average of A and E, here zero, point D

choice b

4. I can't really tell if x is supposed to be an angle or a length in this figure; presumably a length. I suppose we're to assume parallel lines; so this makes similar shapes, i.e. a proportionality:

$\dfrac{24}{x} = \dfrac{36}{12} =3$

$x = \dfrac{24}{3} = 8$

Choice a