Rewrite the expression using addition - 17.9 - 4.2

If the sum of interior angle measures of a polygon is 900, how many sides does the polygon have?

Consider the quadrilateral ABCD. Which information could be used to prove that the quadrilateral ABCD is a parallelogram?

Explain how to use the combine values strategy to find 223-119

Each week Suresh saves 312 of his allowance. Lisa saves 812 of her allowance each week. The children get the same amount of money for their allowances. How much less of his allowance does Suresh save than Lisa saves each week?

27 divided by 30 equals

What is 15 1/5 + 3 5/8?

54 pounds of juicy gummy bears cost $450 how many pounds of bears can you get for $50

if the surface area ratio of Sphere A to Sphere B is 9/100 and the surface area of A is 27 units squared, what is the surface area of sphere B?

b. What is the new angle at the bottom left side of the door? The new angle at the bottom left side of the door is∘.

A chemist has two large containers of sulfuric acid solution, with different concentrations of acid in each container. Blending 305 mL of the first solution and 580 mL of the second gives a mixture that is 10.