This is called the Pythagorean theorem : a ² + b ² = c ². You can substitute any of the variable with any of the known numbers and then you all you have to do is isolate the variable. I hope that helps!!
Answer: She babysat 7 hours
Step-by-step explanation:if you take the knowledge you have; she charges 6$ per hour. and lily mad 42$ you can divide 42 by 6 to get the answer of 7
Step-by-step explanation:

Thus first option is the correct answer.
What? Djskdjxjxndxdjdjdndx
Answer:
x² + 3x - 10
Step-by-step explanation:
Each factor in the second factor is multiplied by each term in the first factor, that is
x(x - 2) + 5(x - 2) ← distribute each parenthesis
= x² - 2x + 5x - 10 ← collect like terms
= x² + 3x - 10