There are 72 fish in an aquarium. 1/6 of them are angelfish and the rest are mackerals. when more angelfish are placed in the aquarium, the fraction of angelfish increases to 7/10. how many angelfish are there in the aquarium now?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.