It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long did he travel each way? (Round answer to nearest tenth.)

What is 4x + 8 = 16 is it true

What is 2/7 divided by 1/7

What is 3/8 + 1/6 equal when adding fractions

Maria needs to buy 12 wine glasses. write an expression of the cost of 12 glasses at p dollars each.

how do you solve the equation - 8-3+8 + (-3) and other questions of this structure, I got this from Kahn Academy: 7th grade math, adding and subtracting negative numbers

Find each product (8k+7) (6k+1)

Your class is going on a field trip. Twenty-four students have turned in their permission slips so far. This is 80% of the students in class. How many students are in the class?

There are23tablesinthelibray. each table has 4chairs. Third graders fill the chairs at 3 tables. fourth graders fill the chairs at 6tables.

Jeremiah flies an airplane for 2.7 hours at an average speed of 304.6 miles per hour. How far did Jeremiah fly?

A triangle with sides 3, 5, and 9 is a right triangle. A triangle with sides 2 ft, 1.5 ft, and 2.5 ft. is a right triangle. If a right triangle has legs with length 12 and 5, find the hypotenuse.