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goblinko [34]
3 years ago
15

7:

Mathematics
2 answers:
Goryan [66]3 years ago
8 0

Answer:

16

Step-by-step explanation:

20% = 0.20

80 x 0.20 = 16

P.S. Harry needs to study ;)

Andrei [34K]3 years ago
5 0

First turn 20% into a decimal by dividing it by 100.

20% ⇒ 0.20

Now multiply 80 by 0.20.

0.20 × 80 = 16

<h2>Answer:</h2>

<u>20% of 80 is 16, so Harry got </u><u>16 questions correct</u><u>.</u>

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27 divided by 55= 0.490909 repeating
Step by Step Explanation:
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The mold for a cone has diameter of 4 inches and is 6 inches tall what is the volume of the cone mold to the nearest tenth
Nesterboy [21]
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6 0
3 years ago
Shannon graphed the system of equations.
ehidna [41]
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3 0
3 years ago
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Rachel enjoys exercising outdoors. Today she walked 5 2/3 miles in 2 2/3 hours. What is Rachel’s unit walking rate in miles per
Dmitriy789 [7]
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Alex Ar [27]

The table and the plotted data are in the attachment.

Answer and Step-by-step explanation: A line of best fit is the best approximation of the given data. It is used to show the relation of two variables and it can be determined, more accurately, by the Least Square Method.

To use the method, follow the steps:

1) Calculate the mean of the two variables:

X = \frac{\Sigma x_{i}}{n}

Y=\frac{\Sigma y_{i}}{n}

2) The Slope of the line is given by:

m=\frac{\Sigma (x_{i}-X)(y_{i}-Y)}{\Sigma (x_{i}-X)^{2}}

3) The y-intercept is found by the formula:

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y = -0.142x + 5.56

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Download pdf
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