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2 years ago

Help me with this question!!!

Mathematics

2 answers:

qwelly [4]2 years ago

6 0

Step-by-step explanation:

×=100

1. Divded 35 by 14 and u get 0.4

Divided 40 by 0.4 and u get 100

suter [353]2 years ago

6 0

Answer:

Step-by-step explanation:

You could solve it two ways:

Cross multiply:

x times 35 = 35x

40 times 14 = 560

35x divided by 35 = x

560 divided by 35 = 16

x = 16

Or:

35 divided by 14 = 2.5

40 divided by 2.5 = 16

x = 16

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Step-by-step explanation:

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A law school administrator was interested in whether a student's score on the entrance exam can be used to predict a student's g

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Answer:

The correlation coeffcient for this case was provided:

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We can also find the $r^2$ who represent the determination coefficient and we got:

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Step-by-step explanation:

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The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The correlation coeffcient for this case was provided:

r =0.934

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$r^2 = 0.934^2= 0.872$

And the interpretation for this is that a linear model explains appproximately 87.2% of the variability between the two variables

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1 year ago

A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour.if electricity costs $0.20 per kilowatt hour how much does

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First find the tangent line

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so
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y-y1=m(x-x1)
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so
y-36=12(x-6)
y-36=12x-72
y=12x-36

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1 year ago

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Answer:

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Step-by-step explanation:

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