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svp [43]
4 years ago
5

Solve using elimination -3-X=0 -3y=-3-2x

Mathematics
1 answer:
ryzh [129]4 years ago
7 0
<h2>The solution is (x, y) = (-3, -1)</h2>

<em><u>Solution:</u></em>

<em><u>Given, system of equations are:</u></em>

-3 - x = 0 --------- eqn 1

-3y = -3 - 2x -------- eqn 2

From eqn 1,

- 3 - x = 0

<h3>x = -3</h3>

<em><u>Substitute x = -3 in eqn 2</u></em>

-3y = - 3 - 2(-3)

-3y = -3 + 6

-3y = 3

<h3>y = -1</h3>

Thus the solution is (x, y) = (-3, -1)

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when 5 is added to a certain number, and also taken from that number, the product of the result is 75. Find the number
goldfiish [28.3K]
I got corrected by mreijepatmat, and this is what they said: "Let x be this number so (x+5)(x-5) =75 ===> x^2 -25 = 75 ===> x^2 =100 & x = 10."

I hope this answer helped you! If you have any further questions or concerns, feel free to ask! :)

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Write a point slope form equation and slope intercept equation. Passes through (-1,-6), slope= -4
zavuch27 [327]

Answer:

The point-slope form would be y + 6 = -4(x + 1) and the slope-intercept form would be y = -4x - 10

Step-by-step explanation:

In order to find the point-slope form, you simply need to put the point and the slope into the base form.

y - y1 = m(x - x1)

y - -6 = -4(x - -1)

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Now to find the slope-intercept, simply solve for y.

y + 6 = -4(x + 1)

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3 0
3 years ago
Use either the substitution or elimination method to solve the following word problem. Your answer should include two equations
vichka [17]
Let w represent the number of weeks passed.

The amount of money Ed saved is 6w - 1 (I'm subtracting the one dollar that he owes to someone)

His sister saved 6w + 2.66 (I'm adding the money she already saved).

What value of w makes both expressions equal?
We need to solve the equation 6w - 1 = 6w + 2.66

Let's solve it.
If we subtract 6w from both sides, we get -1 = 2.66
So, there is no solution. They will never have saved the same amount.
This makes sense because they started out with different amounts of money saved, but they are saving at the same rate.
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4x-3=2x+7 <br>algebraic form ​
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The correct answer is x=5
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3 years ago
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