Angle ABC and angle DEF are complementary angles. The measure of angle ABC is twice the measure of angle DEF. Write an equation to find x, the measure of angle DEF, and then solve for x.

Simplify: - 3^2+8:2*4-|-9|

Katherine buys 8 shirts for $100. How much did each shirt cost?

A phone company charges for service according to the formula: C (n) = 17 + 0.05n, where n is the number of minutes talked, and C (n) is the monthly charge, in dollars.

89/10, 9.3, 8.306, 8 10/11

How many solutions are there to the equation below 9x+16=4x

If X=5 and 5=y, then x=y Ar algebraic equality property justifies the above statement?

The net of a three-dimensional figure is made of 6 rectangles that may or may not be squares. Depending on the number of rectangles that are squares, which could be the figure? Check all that apply.

If a pork roast must absorb 1700 kj to fully cook, and if only 14% of the heat produced by the barbeque is actually absorbed by the roast, what mass of co2 is emitted into the atmosphere during the grilling of the pork roast?

Over the course of a year, a classroom went from 15 students to 19 students. Use the drop-down menus to build an equation that could be used to find the percent change, p, in the number of students.

Matthew's mother asked him to go to the store for her. To get to the store, he walked seven city blocks. He caught the bus and rode 13 blocks. He got off and walked one and a half blocks to the store.