What is the solution to the system:

x-y-2 z=4

-x + 2 y + z = 1

-x + y-3 z+11

At a school for performance art students 2/5 of the girls study music, 3/5 of the girls study dance and 1/6 of the girls study music and dance. What fraction of those who study music also study dance?

Simplify. |-10 - 3| =

What is the value of (-14^0) ^-2?

Kaylee has $100 to put toward purchasing a computer and plans on paying $30 a month until she pays off the value of the computer. Write a linear equation to model how much Kaylee still owes on the computer after x year.

Building A is 363 meters taller than building B. If the height of building A is subtracted from twice the height of building B, the result is 95 meters. How tall is each skyscraper?

The scale of a model a airplane is 3cm to 1.02m. the model is 20cm long how is the real plane.

What are the lengths of the sides of a triangle with vertices at (-3,4), (1,7), and (13,2) ? List your answers in order from least to greatest, like this: 42, 53, 64

How do you solve for x for 9efx+4e=6f+2ef

The surface areas of two similar solids are 340 yd2 and 1,158 yd2. The volume of the larger solid is 1,712 yd3. What is the volume of the smaller solid?

Carlolyn determines that the area of a white triangle is half the area of a shaded triangle because the ratio of the side lengths of a white triangle to a shaded triangle is 3/6. Is Carolyn correct? Explain.