The volume of a sphere with radius r is 4 3 π r 3 . Use that formula to help determine the volumes of the following parts of spheres in problems 45 and 46. 45. All (x, y,z) such that (a) x2 + y 2 + z 2 ≤ 4 and z ≥ 0, (b) x2 + y 2 + z 2 ≤ 4, z ≥ 0, and y ≥ 0, (c) x2 + y 2 + z 2 ≤ 4, z ≥ 0, y ≥ 0, and x ≥ 0.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

125 yards

step-by-step explanation:

i take 75 plus 50.

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).