Simplify the expression by combining like terms. 2x + 4y + 6 + 2y - 5 + 3x

Mathematics

1 answer:

gtnhenbr [62]3 years ago

8 0

I think the answer is 5x + 6y + 1

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3 years ago

A line passes through the points (–1, –5) and (4, 5). The point (a, 1) is also on the line.

IgorC [24]

Answer:

a = 2

Step-by-step explanation:

Let's find the equation of the line using the 2 points given.

Let's call -1 as x_1 and -5 as y_1

also, 4 as x_2 and 5 as y_2

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$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

<em>Let's plug the points and get the equation of the line:</em>

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\y+5=\frac{5+5}{4+1}(x+1)\\y+5=2(x+1)\\y+5=2x+2\\y=2x-3$

Now, to find a, we substitute a in x and 1 in y of the equation of the line we just got:

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4 0

3 years ago

Read 2 more answers

Which of the following functions gives the radius, r(v), of a conical artifact that is 20 inches tall as a function of its volum

nalin [4]

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3 years ago

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Maru [420]

Answer:

-5

Step-by-step explanation:

gradient = change in y ÷ change in x

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