You fill a 13 1/2 gallon tub 1/9 full of water. How many gallons of water are in the​ tub?

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

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)