A carpenter needs to build stairs that measure 5 ¼ ft tall. The carpenter has a total of 42 ft. of material to build each of the stairs. If the carpenter uses all of the 42 ft. of material, how many stairs could be built that are 5 ¼ ft. tall?

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?