Which set of numbers forms a right triangle? A: 2, 1, 4, 7 B: 8, 10, 12, C: 8, 15, 17 D: 3, 4, 4.5, 5.3

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

What is the radical expression that is equivalent to the expression 27 1 over 5?

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.