Suppose two trains leave a station at the same time, traveling in opposite directions. One train travels 20 mph faster than the other. In 4.5 hours, the trains are 450 miles apart. Find the speed...

Suppose two trains leave a station at the same time, traveling in opposite directions. One train travels 20 mph faster than the other. In 4.5 hours, the trains are 450 miles apart. Find the speed...

2x+9+3x+x= no solution 2x+9+3x+x= one solution 2x+9+3x+x= Infinite solution

There is no need for this description

So I really need the answer to this for my 7th grade class and I really don't understand. PLZ HELP

The altitude a (in feet) of a plane t minutes after liftoff is given by a=3400t+600 . How many minutes after liftoff is the plane at an altitude of 21,000 feet?

please help me solve this

Given f(x) = 3x + 2 and g(x) = -2x2+4 Find f(g(2)) What would you do in order to solve? Explain in words the process to solving f(g(2)). How is that different than g(f(2))...

Lesson 1.3

This is an algebra question

Must solve on a number line and show work. Just need help on how to solve

Graph the solution

let f(x) = 4x + 5 and g(x) = x-5/4, find (f x g) (x)

The area of Raymond Hewitt's garden is 14 square feet less than the area of Edmond Cooper's garden. Write an expression for the area of Raymond's garden.

Is it true or false???????

Five times a number decreased by 18 minus 4 times the same number is -36. What is the number?

The difference between two numbers is 15. If 8 is added to twice the greater number, the result is 4 less than 3 times the lesser number. Find the two numbers.

this is Math

****if she has $85. my answer was 4 shirts but i think my answer is incorrect

this is for math Algebra 1

Jason, Kendra, and Amanda collect stamps. Jason has x stamps. Kendra has 12 stamps more than Jason. Amanda has three times as many stamps as Kendra. Altogether, they have 123 stamps. Set up an equation...