What is (2x+y) ^2 - (x-2y) ^2

Simplify |65.45-42.45| - (30.40+45.83)

A theater seats 1,860 people. The last 6 shows have been sold out. Estimate the total number of people attending at the last 6 shows.

You are baking muffins for your class. there are 17 total students in your class and you have baked 5 muffins. write and solve an equation to find the additional number x of muffins you need to bake in order to have 2 muffins for each student.

Line j: y = 2 3 x + 1 2 line k: y = 1 2 x + 2 3 line l: y = 2 3 x + 3 2 line m: y = 3 2 x + 1 2 These four lines have been graphed on the same coordinate grid.

Nancy and Kevin collect coins. Nancy has x coins. Kevin has nine coins fewer than three times the number of coins Nancy has. Write and simplify an expression for the total number of coins Nancy and Kevin have.

Do you have to subtract the intersection of mutually exclusive events?

Danielle runs 1/5 of a mile in 4.5 minutes. if she continues at the same speed, how long will it take her to run two miles?

A costume designer has 40 yards of red fabric to make costumes for a musical in which 8 performers will wear red dresses and 14 people will wear red scarves. The costume maker user 3 1/2 yds for each dress and 3/4 yard for a scarf.

A dozen apples cost$4.92 for a dozen apples is a ratio of what per Apple

Yi Tngs height is 1.49. Express this measurement in millimeters. Explain your thinking. include an equation using exponents in your explanation