Perpendicular lines intersect true or false

A parachutist's speed during a free fall reaches 13 miles per hour. What is this speed in feet peer second? At what speed, how many feet will the parachutist fall during 10 seconds of free fall?

A maths test has two prolems. the first was solved by 70% of the students. The second was solved by 60%. Every student solved at least one of the problems. How many students took the test?

Factor - 1/9 out of - 1/9x-3.

Mrs. Battle is designing a brick walkway to install in her front yard. How many square feet of bricks will be needed for the walkway? A 130 B 122 C 94 D 80

Solve each problem and write your answer in scientific notation

What is the value of 4 (x+y) - 1+2z when x = 3, y=12, and z=-1? Enter your answer in the box.

Determine whether the equation has one solution, no solution, or an infinite number of solutions. 7x - 9y = 12

Mike is working on solving the exponential equation 37^x = 12; however, he is not quite sure where to start. Using complete sentences, describe to Mike how to solve this equation.

Given: 7n+2=4n+17 prove: n=5

Find the volume of a cylinder whose base has a radius of 3 and whose height is 12.5. Use pie = 3.14 and round to the nearest tenth.