2y+y=12

x=2y

solve the system of equations by using the substitution method

There are 10 cups of blue paint and 6 red cups of paint. whats the ratio of blue paint to red paint?

A Subway sandwich costs $5.56. The same sand which has 453 calories. Use unit rates to find the amount of calories per dollar for the sandwich. Round to the nearest thousandth.

Name a pair of lines that apear to be parallel

Write - 621,000 in scientific notion

Esteban skateboarded 1 2/3 hours on Saturday and 5/6 hours on Sunday. How much time did he practice those two days?

What is 22*123 and 3/4*5/6

12,000 is compounded semantically at a rate of 9% for 20 years. Find the total amount in the compound interest account

Evaluate the expressions with grouping symbols: 7 (13 - 8)

If 153=2 (z+z) n153=2 (z+z) n153, equals, 2, left parenthesis, z, plus, z, right parenthesis, n, then what is the value of 2n (2z) - 1932n (2z) - 1932, n, left parenthesis, 2, z, right parenthesis, minus, 193?

Put the following list of numbers in order from smallest to largest. 1. first E. 29.94 2. second D. 28.15 3. third C. 27.068 4. fourth B. 28.08 5. fifth A. 28.3