Erin and mark are hiking down to the river. They descend 1,860 feet. They started hiking at 7:40 am and finished at 12:30 pm. What is the rate of change

Tom and maria typed in words in the ratio of 1 : 5 in 20 minutes. they typed 864 words altogether. find the number of words that each of them typed

What is the solution of the systems of equations? y=2/3x+3 x=-2

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2