Does 21,28,35 form a pythagorean triple

21, 28, 35 is a Pythagorean triple because the lengths found in step 2 form a Pythagorean triple.

Pythagorean Theorem: a² + b² = c²

If a² + b² is equal to c², then the set (21, 28, 35) form a Pythagorean triple

21² + 28² = 928

√928 = 30.46 ≠ c

Therefore (21, 28, 35) DOES NOT form a Pythagorean triple

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8