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Arlecino [84]
4 years ago
11

NEED ASAP!! Find the ratio a:b if it is given that..

Mathematics
1 answer:
olya-2409 [2.1K]4 years ago
4 0

Answer: (1) 7:5 (2) 2:9 (3) 3:4

<u>Step-by-step explanation:</u>

\frac{a}{5} = \frac{b}{7}

cross multiply to get: 7a = 5b

ratio = 7:5

*************************************

2a = 9b

ratio = 2:9

************************************

6a - 3b = 5b

<u>      +3b</u>  <u>+3b </u>

6a         = 8b

<u>÷2        </u>   <u> ÷2 </u>

3a         = 4b

ratio = 3:4

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