A test consists of 20 questions, and students are asked to only answer 15 of them. In how many different ways can they choose 15 questions?

Express 0.8211 in exponent form

Two integers are 38. find the two integers if the larger is 2 less than three times the smaller

Find n so that (4/5) ^3 * (4/5) ^-6 = (4/5) ^2n-1

What is numerical value?

The 5 horses on Miranda's farm each eat 20 pounds of feed per day. How many tons of feed do the horses in in 30 days

Joe berry and Jane rose received a total of $180,000 from a deceased relative's estate. They decided to put away $80,000 in a trust for their child and divide the remainder into 3/4 for Jane and 1/4 for joe. How much will Jane receive?

What is the vertex of y=x^2+2x-1?

Wholesale price $12.50. %Markup 78% what is the $Markup and retail sale price

The SAT mathematics scores in the state of Florida are approximately normally distributed with a mean of 500 and a standard deviation of 100.

The new pane will cost $91.00 plus an additional fee for installation. a local contractor charges $120 per hour for installation. if it only takes 45 minutes to replace the window, what will be the total cost?