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3 years ago

Jan won 51.9% of the votes in the race for school secretary. She received 415 votes. About how many students are in the school?

1 answer:

7 0

Mental way:
415 / 51.9 * 100 = 800 students in the school.

detailed way:
x is the amount of students in the school.
51.9% * x = 415
(divide both sides by 51.9% (or 0.519))
x = 800 students

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3 years ago

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2 years ago

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GarryVolchara [31]

Part 1: The equation of the line is $y=2x+1$

Part 2: The equation of the line in slope intercept form is $y=-3x-1$

Explanation:

Part 1: It is given that the point A is $(1,3)$ and the line B is $y=2 x-2$

To determine the line passing through the point A and parallel to line B, let us first determine the slope and y-intercept.

From the equation of line B, the slope is $m=2$

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Let us substitute the values $m=2$ and $b=1$ in the slope intercept form $y=mx+b$ , we get,

$y=2x+1$

Thus, the equation of the line passing though point A and parallel to line B is $y=2x+1$

Part 2: The given two coordinates are $(-1,2)$ and $(1,-4)$

To determine the equation of line in slope intercept form, first we shall find the slope and y-intercept.

From the graph, we can see that the line touches the y-axis at -1.

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$y=-3x-1$

Thus, the equation of the line in slope intercept form is $y=-3x-1$

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3 years ago

What is the third quartile of the given data set? {2, 5 ,6, 7, 15, 16, 17}

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Here, Median = 7

Then Q3 = {15, 16, 17}
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