Solve the system by the elimination method.

2x + y - 4 = 0

2x - y - 4 = 0

When you eliminate y, what is the resulting equation?

a) x = 0

b) 4x = - 8

c) 4x = 8

A store has 30 boxes each box has 2 bags and each bag has 3 melons. how many melons are in the store in all?

Julio cubes a number and then takes the cube root of the result. he ends up with 20what number did julio start with

Rex walks 3 1/7 km in 1 1/4 hours. At the same speed, how long will he go in one hour? Simplify your answer and write it as a proper fraction or as a whole or mixed number. Show your work.

What is the center and radius of the following circle: x2 + (y _ 6) _ = 50

657 passengers paid £247 each for a cruise on a small cruise ship. Estimate the amount paid by the passengers in total

For babysitting, Nicole charges a flat fee of $3, plus $10 per hour. Write an equation for the cost, C, after h hours of babysitting.

In particular month, Mr. Clark spent $900 on food which is 30% of his monthly salary. FInd his monthly salary

Add these numbers 1.36 ounces + 3.75 ounces + 2.62 ounces equals what

Which term best describes the shapes below that are the same shape but not the same size

Find the percent of the number. 25% of 340