Ariel completed the work below to show that a triangle with side lengths of 9, 15, and 12 does not form a right triangle. 9² + 15² = 12² 81 + 225 = 144 306 ≠ 144 is ariel’s answer correct? a) no, ariel should have added 12² and 15² and compared that to 9². b) no, ariel should have subtracted 12² from 9² and compared that to 15². c) no, ariel should have added 9² and 12² and compared that to 15². d) yes, ariel’s work is correct.

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?