Combine like terms. - 5x - 3x + 7x

15x

-x

x

9x

Consider the line x+6y=9 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line?

The sum of two numbers is 51 and the product of the two numbers is 230. What is the difference of the two numbers?

Square root of x^2-4 plus x^2/x^2+1

Find two consecutive odd integers the sum of whose squares is 130.

Six teachers can grade all final tests in 4 hours. if each teacher works at the same rate, how many hours would it have taken for 8 teachers to grade the tests?

An=-31 + (n-1) - 11 find the eleventh term

Brian works in the lab and feels an empty cylindrical flask with 200 cubic centimeters of liquid. The flask has a radius of 3 cm and a height of 12 cm. What percent of the volume of the flask is not filled with liquid?

436% of what number is 31.61

If you have zero cookies and share them amongst zero friends, how would you write the equation and solve it?

What is the interior angle sum of a 15-gon?