Find the highest common factor of 80 and 20

Working alone, ryan can dig a 10 ft. By 10 ft. Hole in five hours. Castel can dig the same hole in six hours. How long would it take them if they worked together?

Altlantic Auditorium has 1500 seats. Tickets were sold for 900 of the seats. for what percent of the seats were tickets sold?

Sin = 5/13, and cos b = 3/5, evaluate cos (a-b).

Hjl = 26x-7 ljk = 10x+7 what is the value of x

What is 3:4 not simplified

Find the solution set for the open sentence with the given replacement set. 4y + 2 = 18, {4, 5, 6, 7}

Which of the following must be true for an expression to be a difference of two squares? a. all variables are raised to an even power b. there are only two terms c. both terms have negative coefficients A. a, b, and c B. b and c C. a and b D.

98% of 30 what the percent

Carmen has a rope 54 feet long. she wants to cut it into 6-foot lengths to make jump ropes for the members of the jump roping team. how many jump ropes can carmen make?

Convert this decimal into a percentage: 1.125