3 years ago

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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Answer:1.A

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Step-by-step explanation:

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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

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I think the answer is 2.5 sorry if I’m wrong

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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

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