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melamori03 [73]
3 years ago
12

Which is equal to the cos ÐR?PLEASE HELP ME

Mathematics
1 answer:
inna [77]3 years ago
4 0

Answer: 4/5 = .8

cos adj/hyp of r is .8

HOWEVER...

I’m assuming it’s talking about angle R...

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Answer:

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Let the common multiplier of the given ratios be x. Therefore, weights of each bag would be 2x, 3x and 7x

According to the given information:

2x + 3x + 7x = 90 \\ 12x = 90 \\ x =  \frac{90}{12}  \\ x = 7.5 \:  \\  \implies \\ 2x = 2 \times 7.5 = 15 \: kg \\ 3x = 3 \times 7.5 = 22.5 \: kg \\ 7x = 7 \times 7.5 = 52.5 \: kg

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