90 degrees + 5x + x needs to equal 180 degrees cant figure out the variables though

A sidewalk is built 12 bricks wide by laying each brick side by side. how many inches wide is this sidewalk is each brick measures 3 7/8 inches wide?

How do you round 5,382,619 to the nearest 100

A stadium has two sponsorship deals. Deal A had revenue of $100,000 and expense of $10,000. Deal B has revenue of $50,000 and expenses of $20,000. What is the stadium's average profit as a percentage of revenue on these two deals?

Daredevil Danny was cliff jumping. He jumped off a cliff that was 14.2 meters above the surface of the water. At the end of his jump, Danny was 2.3 meters below the surface of the water. The following equation describes this situation 14.

Percy's pizza parlor sells three sizes of pizza. What is the ratio of the diameter of the large pizza to the diameter of the medium pizza? Small 11 in. medium 14 in. Large 17 in.

A copy Machine can make 360 copies in 10 minutes. How many copies can it make in 100 minutes?

Each student needs 35 craft sricks for an art project. The art teacher has 7,140 craft sticks. How many students can get craft stick from teacher? What number can i use to estimate the quotient? Explain how to check the answer to a division problem.

Does anyone know f (-3) =

In a fruit punch you mix 150 ml of lemonade with 250 ml of fruit Write the ratio of the volume of lemonade to the volume of fruits Give your ratio in its simplest form.

The sun of 3 times a number and 5 is 2 times the number plus 15. what is half the number