Describe the number 78 in two different ways using tens and ones

A chemist needs a 20% solution of alcohol. How many liters of 15% solution should be added to 4 liters of 40% solution to get a 20% solution?

The square of a negative number is thirty-two more than four times the negative number.

How do I factor this: 15x^2-8x+1 The answers are 1/5 and 1/3 but I don't know how to get there

What is x^2 + 4x-3 = 0, solve by completing the square.

Four friends share 10 fruit bars equally how many fruit bars does each friend get

The sum of two numbers is 17. The difference between the larger number (x) and the smaller number (y) is 7. What is the value of the smaller number?

10 kilograms = ? grams

A sporting goods store sells 6 baseballs, 9 footballs, and 10 basketballs on Saturday. The store sells 3 baseballs, 5 footballs, and 7 basketballs on Sunday. Which ratio is the smallest?

How to write 4/6 in unit fraction

Mario cut a pizza into 9 equal slices he put the slices of pizza on each of 5 plates what is the measure for the angle of the slices that are left