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lisabon 2012 [21]
3 years ago
13

how do you do #3? if you can please take a picture or just explain the process, not just the answer. (i don’t need a super detai

led explanation it’s just it was assigned as hw even tho my teacher didn’t teach it to us :/)

Mathematics
1 answer:
oee [108]3 years ago
5 0

Hello from MrBillDoesMath!

Answer:

z = 28 (y/x)

Discussion:

" z varies inversely with x and directly with y"  translates into

z = k * (y/x)                 (*)

Substituting x = 2, y = 3, z = 42  in (*) gives

42 = k (3/2)                        =>   multiply both sides by 2/3

42 (2/3) = k (3/2)(2/3)         =>  42(2/3) = 28; (3/2)(2/3) = 1

28 = k

Conclusion:

z = 28 (y/x)

 

Thank you,

MrB

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