Solve for a:

-5 + 2a = - a - 8

How do i solve y=⎷x+5

Two brothers are saving money to buy tickets to a concert. Their combined savings is $55. One brother has $15 more than the other. How much has each saved? Write an equation to solve.

The figure has been decomposed into three rectangles as shown. A figure is decomposed into 3 rectangles. The rectangles are 4 inches by 2 inches, 6.5 inches by 2 inches, and 4 inches by 1.5 inches. Find the area of each piece of the composite figure.

Chris has 35 cookies for the bake sale. The ratio of chocolate chip coskies to peanut butter is 4:3. How many chocolate chip cookies are there? How many peanut butter cookies are there? Use a tape diagram to justify your answer.

What is (-3) x (5-7) - 9 (39/3)

The length of a rectangle is 3 inches more than its width. If the length and width are each increased by 2 inches, the perimeter of the rectangle becomes 66 inches. If x is the width of the rectangle, find its length and width.

Which equation describes a linear function? a) y = 3x + 5, b) y = - x^2 - 5, c) y = 3/x, d) y = x^3

100, 119, 103, 111, 110, x, mean 116

Show that a∧6 can be written as a perfect square and as a perfect cube.

When adding two rational numbers, if a pair of addends has opposite signs, then the sum will have the sign of the addenda with the