Just the answers please, I don’t need working! I beg. Will give brainliest

Can (2,3 and square root 10) be sides ona right triangle?

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great