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Oduvanchick [21]
2 years ago
8

CAN SOMEONE PLEASE HELP ITS DUE TODAY

Mathematics
2 answers:
nikdorinn [45]2 years ago
7 0

Answer:

n = 6

Step-by-step explanation:

\frac{ {5}^{n}  \times  {5}^{3} }{ {5}^{7} }  =  {5}^{2}  \\  \\  \implies \: \frac{ {5}^{n + 3}  }{ {5}^{7} } =  {5}^{2} \\  \\  \implies \:  {5}^{n + 3 - 7}  =  {5}^{2} \\  \\  \implies \:  {5}^{n  - 4}  =  {5}^{2} \\  \\  \implies \:n - 4 = 2 \\  \\   \implies \:n = 4 + 2 \\  \\  \implies \:n = 6

rodikova [14]2 years ago
4 0

\qquad\qquad\huge\underline{{\sf Answer}}♨

Let's solve ~

\qquad \sf  \dashrightarrow \: \frac{5 {}^{n}  \times  {5}^{3} }{5 {}^{7} }  =  {5}^{2}

\qquad \sf  \dashrightarrow \: \frac{5 {}^{n + 3}    {}^{} }{5 {}^{7} }  =  {5}^{2}

\qquad \sf  \dashrightarrow \:5 {}^{n + 3 - 7} =  {5}^{2}

\qquad \sf  \dashrightarrow \:5 {}^{n - 4} =  {5}^{2}

\qquad \sf  \dashrightarrow \:{}{n - 4} =  {2}

\qquad \sf  \dashrightarrow \:n = 2 + 4

\qquad \sf  \dashrightarrow \:n = 6

Hence, value of n is 6

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The following data pairs represent the average temperature x (in degrees Fahrenheit) and electricity
elena55 [62]

Answer:

<u>The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.</u>

Step-by-step explanation:

Using Excel, we captured the data provided for the 12 different homes for calculating the correlation coefficient manually, this way:

n = 12

∑x = 904

∑y = 2,169

∑xy = 167,532

∑x² = 69,552

∑y² = 404,615

r =  [n *∑xy  - (∑x * ∑y)]/[√(n * ∑x² - (∑x)²) * (n * ∑y²  - (∑y)²)]

Replacing with the real values, we have:

r = [12 * 167,532  - (904 * 2,169)]/[√(12 * 69,552 - 904²) * (12 * 404,615  - 2,169²)]

r = [2'010,384  -1'960,776]/[√(834,624 - 817,216) * (4'855,380  - 4'704,561]

r = 49,608/√17,408 * 150,819

r = 49,608/ 51'239.215

r = 0.00097

<u>The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.</u>

4 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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3 0
3 years ago
The perimeter of a triangle is 12in. After a dilation, the perimeter is now 60in. What is the scale factor?
LenaWriter [7]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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3 0
3 years ago
I need help and a explanation please
Zanzabum

Answer:

$6.48

Step-by-step explanation:

It would be $6.48 because 1.60 times 4 1/2 is 7.2 and if you do 10% of 7.2 you get B.

3 0
3 years ago
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