Rosa can clean a house in 7 hours. when rosa and amy work together, they can clean a house in about 4.2 hours. about how long will it take amy to clean a house if she works by herself?

11 h
10.5 h
10 h
9.5 h

What other information do you need to prove triangle dac=bca by asa

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking