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aksik [14]
3 years ago
8

In 2011, it was estimated that the number of U.S households which had dogs as pets was 4.33 x 10^7 and the average number of dog

s per household was 1.6 based on the infomation, approximately how many dogs were household pets in the US in 2011 in Scientific notation
A. 2.71 x 10^7
B. 3.70 x 10^8
C. 5.33 x 10^8
D. 6.93 X 10^7
Mathematics
1 answer:
poizon [28]3 years ago
4 0

The right answer is

D. 6.93 X 10^7

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The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. Find the number.
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Equation to find number: \frac{1}{n} - 3 = \frac{20}{n}

Number's value: n = -\frac{19}{3}



Step-by-step explanation:

Let n be the unknown number.

The reciprocal basically makes the number (n in this case) a fraction. So, that being said, the reciprocal of n would be \frac{1}{n}.

The difference of three and the reciprocal of a number (\frac{1}{n}) would be \frac{1}{n} - 3.

The quotient of 20 and the number (n) would be \frac{20}{n}.

So, with this information we've gathered so far, we can come up with an equation to find what the number equals.

Equation: \frac{1}{n} - 3 = \frac{20}{n}

To find what the number equals we must solve the equation.

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3 years ago
Greg evaluated his spending and found that he was spending about $50 more per month on utilities than he has budgeted. He can tr
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The percent of his monthly income that will be budgeted for the utilities will be approximately 5.21%.

According to the question,

We have the following information:

Greg evaluated his spending and found that he was spending about $50 more per month on utilities than he has budgeted. He can transfer money from other categories to increase his utilities budget to $125 per month. If his total monthly income is $2,400.

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We have the following expression:

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Hence, the percent of his monthly income that will be budgeted for the utilities will be approximately 5.21%.

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Step-by-step explanation:

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Read 2 more answers
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