The ratio to boys and girls at the beach cleanup was 7: 8 if there were 42 boys how many girls were there

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655