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erik [133]
3 years ago
12

Simplify the following expression.

Mathematics
1 answer:
Anastaziya [24]3 years ago
5 0

Answer:

1889.02

Step-by-step explanation:

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90% of runners who started a marathon completed it. Of those, 30% are men. If 270 men completed the marathon, then how many tota
il63 [147K]

Given- 90% of runner completed the marathon.

out of which 30% are man.

To proof -  let the total number of runner be y.

the men completed the marathon be 30% of the 90%.

thus we have

30% of 90% of y = 270

\frac{30}{100}×\frac{90}{100}×y = 270

now solving the above equation

we get

\\y=\frac{270\times 100\times 100}{90\times 30}

Thus solving the equation

y = 1000

Thus the total runners of men who completed marathon be 1000.

Hence proved










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Allushta [10]

Answer:

if y = 5 than 2x - 5 = 5 we can simplify this too 2x = 10 ( by adding the 5 to both sides ) now we can simplify and get x = 5 ( by dividing by 2 ) so we get (5,5) as our first point. well since its in slope intercept form ( y = mx + b ) we can graph it.

Step-by-step explanation:

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