If x+y=-9 and x+2y=-25 what is the value of x?

The mean of twenty numbers is 42. If four of the twenty numbers have a mean of 50, what is the mean of the other sixteen numbers?

Tyger is trying to eat less sugar in his diet. He reduces his sugar intake from 15 spoons a day to 9 1/2 spoons a day. What is the percentage reduction in his sugar intake.

Write an expression for each statement. Then solve. 5 times the difference between 19 and 13

Write the expression using exponents. 8⋅w⋅w⋅w⋅w

A car can be rented for?$55 per week plus?$0.75 per mile. how many miles can be driven if you have at most?$340 to spend for weekly? transportation

How bigger is a 1 ¼ inch button than a ⅝ inch button

What is the slope of a line represented by the equation 2y=x-4

The first year of a charity walk event had an attendance of 500. The attendance y increases by 5% each year. How many people will attend in the 10th year?

X + 5 * 3 divided by 4 - 2= (Sorry, I don't know how to create a division sign on this keyboard.)

Convert 78% to a decimal