A chemical engineer has tested 56 water samples. These samples make up 25% of the total number of samples that need testing. Select from the drop-down menu to correctly identify the total number of water samples that need testing.

Two trains leave stations 442 miles apart at the same time and travel toward each other. One train travels at 75 miles per hour while the other travels at 95miles per hour. How long will it take for the two trains to meet? Do not do any rounding.

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

7/10 = 3/6 3/8 = 3/6 7/10 = 3/8

Sara rented a bike from Imani's bikes. It costs $11 plus $4 per hour. If Sara paid $43, then he rented the bike for how many hours?

How many square feet is a football field?

Which expressions are 3x+3 (x+y)

What is the next term in the sequence below? -324,108,-36,12 ... a) - 4 b) - 3 c) 3 d) 4

There are 5 slices of pepperoni pizza, 1 slice of sausage pizzá, and 3 slices of cheese pizza left at the pizza party. Without looking, Amy took a slice of pizza, ate it, and then took another slice.

Factorize 27x^3-16y^3

How to find fractions between a pair of fractions?