Aball shaped like a sphere has a radius of 2.7 centimeters. which measurement is closest to the volume of the ball in cubic centimeters

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?