What is the length of line AC when line AB is 51 and line AC 144-X and ane A is 90°

Hannah works at the mall selling book bags. she sold 35 book bags in 5 hours. how many book bags did she sell per hour?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number