a number is multiplied by 3 and then 7 is added. The result is doubled, giving the answer 80. Using n to represent the original number. Write an equation

How do i show the substitution method to solve x=5y-7 and 3y+2y=12

What is the base of a triangle with a hypotenuse of 25cm and a right angle of 18

Reagan is using geometry software to construct a regular pentagon by using rotations. What is Reagan using for the angle of rotation?

Write the following polynomial in expanded form (2k-5) ^2

How can you make 36 cents

The length of a rectangle is 1 ft more than double the width, and the area of the rectangle is 45 ft2. find the dimensions of the rectangle.

Each minibus seats 14 people, and the school owns 5 minibuses. Use mental math to find how many students can ride in the school's minibuses at the same time. Show your work.

Find the x and y intercepts of 8x 4y=56

Factor completely x2 - 10x + 25. (x - 5) (x - 5) (x + 5) (x + 5) (x + 5) (x - 5) (x - 25) (x - 1)

2/3=1.2/x solve for x