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3 years ago

If you leave the tap on at home,750 quarts of water will run out every 50 second. How long will it takefor 660 quarts

1 answer:

3 0

It will take 44 seconds.

when you divide 750/50, you get 15, meaning that every second, you lose 15 quarts of water. If you divide 660/15, you get 44.

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zaharov [31]

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sergij07 [2.7K]

Answer:

∠ ABC ≈ 137.9°

Step-by-step explanation:

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cos B = $\frac{a^2+c^2-b^2}{2ac}$

with a = 89, b = 144, c = 65

cos B = $\frac{89^2+65^2-144^2}{2(89)(65)}$ = $\frac{7921+4225-20736}{11570}$ = $\frac{-8590}{11570}$ , thus

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