bear342
17.07.2019 •
Mathematics
Solve n/5=18/30, for the unknown quantity, n
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Ответ:
We can cross-multiply to find n.
5(18) = 30n
90 = 30n
Divide both sides by 30 to find n.
90/30 = 30n/30
3 = n
Done.
Ответ:
n=3
n/5=18/30 This is the same as:
6n/30=18/30
eliminate 30 from both sides
6n=18
n=3
Ответ:
David 1,988-1,956+32
It is David because when you find the unite ratio you get 1,988 for David and 1,956 for Megan.