Please answer the question correctly. I don't understand.
Which sets of side lengths represent Pythagorean triples? Check all that apply.
A. 1, 2, 5
B. 6, 8, 14
C. 8, 15, 17
D. 10, 24, 26
E. 15, 20, 30
F. 28, 45, 53

Y=4x^2+x-1 solve using quadratic formula

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?