Rick can mop the floor in 5 minutes. together rick and nancy can mop the floor in just 4 minutes. how long would it take nancy to mop the floor alone?

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Find two numbers if their sum is 91 and the ratio is 6: 7?