Which of the equations are true identities n^3+3n^2

X squared minus six x equals negative thirteen

Round off to nearnest thousand 5,486 + 8,602

What is 10 * 10.10 + 500 =

The length of a triangle is 2x cm, 3x cm, and 4x cm. The perimeter of the triangle is 81 cm. Calculate the value of x.

Lisa has 1/3 of an hour to read and watch television. She wants to split her time equally between the two activities

Nana spent $28 on 2 dvd's. At this rate, how much would 5 dvds cost? At what rate did she spend her money

Calculate the volume of a pyramid with a square base, where the perimeter of the base is 5.7cm and the height of the pyramid is 8.6cm. Round your answer to the nearest tenth of a cubic centimeter.

If you have 16 cups of sugar, 2 cups of sugar for every batch of cookies, but you have to save 6 cups of sugar for something else. How many batches of cookies can you make?

Phoung is rolling a standard 1-6 number cube and flipping a coin. What is the probability that the cube will land on 4 and the coming will land heads up?

The sum of w and 220 is the same as 282. Write this in a sentence