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tamaranim1 [39]
4 years ago
12

You went shopping for classroom supplies. You bought 255 blue pens, 100 red pens, and 189 green pens. How many pens did you buy

in all?
Mathematics
1 answer:
jeyben [28]4 years ago
7 0
I bought 544 pens in all
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How do you write the equation in slope intercept form given (2,2) and (0,-2)?
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Answer:

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Step-by-step explanation:

The slope-intercept form of the equation of a line is

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y = mx + b

First we find the slope, m.

slope = (difference in y)/(difference in x)

It does not make a difference which point is first and which point is second in finding the differences, but you must do the x- and y-differences in the same order.

slope = (-2 - 2)/(0 - 2) = -4/(-2) = 2

The slope is 2, so m = 2, and now we have:

y = 2x + b

We need to find the value of b, the y-intercept.

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2 = 2(2) + b

2 = 4 + b

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Now that we know the y-intercept is -2, we substitute b with -2.

y = 2x + b

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Answer: y = 2x - 2

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3 years ago
What is the variable in the algebraic expression 2f+5?
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Answer:

f

Step-by-step explanation:

I don't think anything needs to be said.

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