can someone tell me what these are? 2a-5b=-19 3a+5b=9

If y=4x 5, find the value of y when x=0

What is the length of each side of a cube if the volume is 343 in^3?

Regina recently inherited an oil painting that was purchased by her great-grandfather for $100 in 1938. In 2013 she took the painting to an appraiser who estimated its value at $300,000.

Serena ordered 27 pizzas for a party. the total bill came to 351. how much did each pizza cost

A gas station sells a coffee mug filled with coffee for $3. For each refill, using the same mug, the gas station charges $1.25 for the coffee.

Subtract the equations. 5x + 4y = 25 (5x + 2y = 3)

4 times what number equals 204

Solve for p. 2 (p + 1) = 24 What is the answer? A 11 B 11.5 C 12.5 D 13

What is 10000+7891287

The The high school art teacher has 9 cases of crayons with 52 boxes in each case. The elementary school art teacher has sl6 cases of crayons with 104 boxes in each case. How many boxes of crayons di both teachers have is your answer reasonable?