Before beginning voice lessons, Gwen already knew how to sing 1 piece, and she expects to learn 1 new piece during each week of lessons. After 49 weeks of voice lessons, how many
pieces will Gwen be able to sing, in total?

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

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Could someone me with this question i’ve been stuck on it for 20 minutes