9. A baseball, 167 grams, is pitched at 50 m/s when is hit by the batter. The ball travels in the
1 answer:
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Answer:
Step-by-step explanation:
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<h2>⠀⠀Question :</h2>⠀
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<h2>⠀⠀Solution :</h2>⠀
Using (a² - b²) identity
(a² - b²) = (a + b)(a - b)
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Total amount paid by Matt at restaurant was 55 dollars. It included a service tip of 10% on check amount.
Total bill is given by sum of check amount and tip amount (if any).
Total Bill = Check amount + Tip amount.
55 dollars = Check amount + 10% of check amount.
55 dollars = 110% of check amount.
55 dollars = 1.10 x check amount.
Check amount =
Hence, option D is correct, i.e. 50 dollars.