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Ad libitum [116K]
3 years ago
9

Select the correct answer. A pound is approximately 0. 45 kilogram. A person weighs 87 kilograms. What is the person’s weight, i

n pounds, when expressed to the correct number of significant figures? A. 190 lb B. 180 lb C. 52 lb D. 39 lb.
Mathematics
1 answer:
Serggg [28]3 years ago
3 0

Answer:

A. 190 lb

Step-by-step explanation:

Hope this helps

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First thing to do, when you have to add 2 fractions, you have to make both denominators equal. 14/6 = 0.84, so can't multiply or divide any fraction by a whole number to get the other denominator.
So, you multiply each fraction by the denominator of the other fraction. Which means that you multiply 5/14 by the denominator of 1/6 which is 6, and you multiply 1/6 by the denominator of 5/14 which is 14.
5/14 + 1/6 = 30/84 + 14/84
Then you join both fractions to make them under one denominator, since both denominators are equal.
30/84 + 14/84 = (30+14)/84 = 44/84.
Now, you need to simplify the fraction: you divide both numerator and denominator by 4:
44/84 = 11/21

So 5/14 + 1/6 = 11/21

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