Explain how / you know that 55 over 80 is not in simplesst form

How do i use gcf with this problem?

What is 2 + 2 + 8 + 10 + 22

Which equation has the solution x = 5? Select each correct answer. 25x+4=9 18-2x=9 x5+5=6 11 + 6x = 22 32-4x=12 3x + 1 = 9

To pass a course with aa upper cc grade, a student must have an average of 7070 or greater. a student's grades on three tests are 7070 , 7373 , and 6565. find what score the student must get on the next test to get aa upper cc averagenbsp or better.

A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet.

The temperature dropped 17 Fahrenheit in 6 hours. The final temperature was - 3 Fahrenheit. Use integer addition to find the starting temperature.

What would $25 deposited 56 yrs ago be worth today?

What is the value of x in the equation 3x - 1/9y = 18, when y = 27?1

What are the possible values of x if (4c-5) ^2 = 49?

Mario's company makes unusually shaped imitation gemstones. One gemstone has 12 faces and 11 vertices. How many edges does the gemstone have?