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katrin2010 [14]
3 years ago
12

Please help solve the given system of equations: x = -3

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0
Where does if have the bracerts





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A barbecue sold 26 hamburgers and hot dogs. Hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. If the barbecue mad
Angelina_Jolie [31]

x => Hamburgers

y => Hot dogs


x + y = 26

3.5x + 2y = 70


-2x - 2y = -52

3.5x + 2y = 70

-----------------------

1.5x = 18

x = 18 / 1.5 = 12

y = 26 - 12 = 14


They sold 12 hamburgers and 14 hot dogs

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4 years ago
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vazorg [7]

Answer:1.A

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Step-by-step explanation:

7 0
3 years ago
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Solve by substitution: <br> -5x + y = -2<br> -3x + 6y = -12<br><br> please explain
fomenos

First we pick the equation. Let's say we pick first one. From it we express y.

-5x+y=-2\Longrightarrow y=-2+5x

Then we use this y and plug it in instead of y in the second equation.

-3x+6(-2+5x)=-12

Now just solve for x.

-3x-12+30x=-12 \\-3x=-30x \\\underline{x=10}

We plug this x in the first equation.

-5\cdot10+y=-2

And solve for y.

-50+y=-2 \\\underline{y=48}

So the solution to the equation is geometrically a point P which lies on the intersection of the two lines.

\boxed{P(10,48)}

Hope this helps.

r3t40

4 0
4 years ago
An emu-for-hire company has 20 emus they rent out to people with emu-related emergencies. There are 5 brown emus, 8 grey emus, 2
Fittoniya [83]
I think the answer is 2.5 sorry if I’m wrong
7 0
4 years ago
5/7 to 9/14 what is the answer
Viefleur [7K]

Answer:


Step-by-step explanation:

5/7 - 9/14 = (2 * 5)/(2 * 7) - (1 * 9)/(1 * 14) = 10/14 - 9/14 = (10 - 9)/14 = 1/14

3 0
4 years ago
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