What is the x-coordinate of the solution for the system of equations?

{y-x=9

{10+2x=-2y

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x =

A sign says that the price marked on all music equipment is 30℅ off the original price. you buy an electric guitar for the sale price of $315. what is the original price?

What numbers are not a common factors 15, 45, and 90

Which of the following terms best describes a condition in which a qauntity decreases at a rate that is proportional to the current value of the quantity? A. exponential growth B. Exponential decay C. Positive slope D. Negative slope

What is the decimal for the fraction 28/6

The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b? A. 4,1 B. - 19,40 B. 20,1 C. 30,9 D. - 8,-29

Consider a sequence that follows a times 5 pattern: 1, 5, 25, 125, ... a. Write a formula for the nnth term of the sequence. Be sure to specify what value of n your formula starts with.

Find the diagonal of a square whose sides each measure 3v2 units.

10 x (5 x 4) = (b x 5) x 4

5 Connie is working to earn $200. She earns $25 mowing her grandmother's lawn and $60 for a day of housecleaning. Which decimal represents the part of the money Connie still needs to earn and why? A 0.575 B 0.115 C 0.425 D 0.85

A farmer sells 9.7 kilograms of apples and pears at a farmer's market. 1/4 of the weight is apples and the rest is pears. How many kilograms of pears did she sell at the farmer's market What is the fraction