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Arlecino [84]
4 years ago
10

Help on question 32 please

Mathematics
1 answer:
Tresset [83]4 years ago
6 0

Answer:

90

Step-by-step explanation:

The mean is measured as

mean = \frac{score}{count}

After 5 tests the mean is 84, that is

\frac{score}{5} = 84 ( multiply both sides by 5 )

score = 420

let the sixth test score be x, then

\frac{420+x}{6} = 85 ( multiply both sides by 6 )

420 + x = 510 ( subtract 420 from both sides )

x = 90

Require to score 90 on the sixth test

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Illusion [34]

The line of the best fit is y = 4.71x—30.31 and at x = 9.5 inches the value of y is 14.5 oz.

<h3>What is the line of best fit?</h3>

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

First, we need to find the line of best fit:

Let's suppose the line of the best fit is:

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We can find the value of m:

\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2}   and

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After calculating, we will get:

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Thus, the line of the best fit is y = 4.71x—30.31 and at x = 9.5 inches the value of y is 14.5 oz.

Learn more about the line of best fit here:

brainly.com/question/14279419

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2 years ago
Use the discriminant to determine the number of solutions for the quadratic equation.
Leno4ka [110]

Answer:

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3 years ago
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