a projectile is fired from the ground with an upward speed of 245 m/s. after how many seconds will it return to the ground? use the formula h=t-4.9t^2

There are 32 pens to 40 brushes. What is the ratio from pens to brushes written as a fraction in simplest form

Building an A - frame dog house. Your club has decided to build and sell dog houses for a fundraising project. You found this dog house a set of plans by searching the net.

Last year there was 1,435 8th grade students enrolled at your school. This year there are 1,220. What is the percent change in number of 8th grade students?

An electrician has a spool of wire that is 200 m long. she needs four pieces of wire measuring 42.3 m, 37.8 m, 55.6 m, and 35.7 m.

What dies it mean for an equation to express y in the terms of x

A delivery person uses a service elevator to bring books up to an office the delivery person 160lb and each box of books weighs 60lb the maximum capacity of the elevator is 1230lb

If you flip a coin 300 times how many times would you expect the coin to lands head up? Explain your reasoning (write in complete, mathematically precise sentences).

What is 305 divided by 5 using the distributive property in division without remainders

Five runners Gandy Beth Dale Ella and Trey are in a 1-mile race. Trey finished 6 seconds after Dale. Dale finish five seconds before Andy. Andy finished 5 seconds before Beth. Ella finished four seconds after Beth.

A^2-7a=-8a+2 in factoring form