3 years ago

Does y=3x+7 pass through the points (-3,-2) and (1,10) ?

Mathematics

2 answers:

Svetradugi [14.3K]3 years ago

7 0

Yes that line passes through those points.

Oxana [17]3 years ago

4 0

Yes all you have to do is plug in the values and you will get the answer

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OlgaM077 [116]

Answer: 3421.19

Step-by-step explanation:

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4 years ago

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Dennis_Churaev [7]

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2 C (20, 40)

Step-by-step explanation:

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4 years ago

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The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c)

Ilya [14]

Answer:

$\bar X =\frac{2.3+3.1+2.8+1.7+0.9+4+2.1+1.2+3.6+0.2+2.4+3.2}{12}=2.29$

$s=1.09$

Step-by-step explanation:

For this case we have the following data given:

2.3 3.1 2.8

1.7 0.9 4.0

2.1 1.2 3.6

0.2 2.4 3.2

Since the data are assumedn normally distributed we can find the standard deviation with the following formula:

$\sigma =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And we need to find the mean first with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X =\frac{2.3+3.1+2.8+1.7+0.9+4+2.1+1.2+3.6+0.2+2.4+3.2}{12}=2.29$

And then we can calculate the deviation and we got:

$s=1.09$

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3 years ago

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