Is 2.8571428571 rational or irrational

Find the lengths of the three sides of a right triangle if the hypotenuse is 1 cm longer than the longer leg and 3 cm less than four times the shorter leg?

Divide $120 in the ratio 5:7

Broccoli cost 1.50 per pound at the shop. How much money does 64 ounces of broccoli cost, before tax?

Bethany has 28 oatmeal cookies and 36 peanut butter cookies to pack. each bag will contain only one kind of cookie, and every bag will have the same amount of cookies.

Let the sample space represent all the values from 1 to 10. Let A = {1, 2, 8} and B = {2, 7}. What is the P (A ∪ B) ? (Express your answer as a decimal)

Alex runs up a staircase with n steps, and can hop either 1, 2, or 3 steps at a time. Count how many possible ways the child can run up the stairs. solution?

Which of the following is a solution for x/4 > 10? x = 40 x = 37 x = 29 x = 47

What is the greatest common factor of 24jk and 32jkm

4. Alistair has an infinite number of bags numbered 1, 2, 3, 4 ... Each bag contains an infinite number of marbles numbered 1, 2, 3, 4 ... Is the set of all marbles that Alistair possesses larger than the set of marbles he has in just the first bag?

Hector took out a small loan of $900 for 18 months. The simple interest rate on the loan was 10.5%. How much will he pay in interest on the loan?