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VladimirAG [237]
2 years ago
8

Find the solution of the system of equations. 10x+10y=40 5x+3y=8

Mathematics
1 answer:
ddd [48]2 years ago
7 0

Answer:

x = -2 & y = 6

Step-by-step explanation:

10x+10y=40

10x+10y+ -10y=40+-10y

10x=-10y+40

\frac{10x}{10} =\frac{-10y+40}{10}

x=-y+4

5x+3y=8

5(-y+4)+3y=8

-2y+20=8

-2y+20+-20=8+-20

-2y=-12

\div2

y=6

x=-y+4

x=-6+4

x=-2

Hope this helps.

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Answer:

The parabola generated by the expression :

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is the one that better represents a rain gauge above the ground.

Step-by-step explanation:

The function:

a) y=x^2+11x+24

Direction of parabola: branches pointing up

Location of vertex relative to x-axis: below

So, the parabola doesn't depict a rain gauge off the ground

b) y=-x^2-6x-8

Direction of parabola: branches pointing down

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So, the parabola doesn't depict a rain gauge off the ground

c) y=x^2-2x+3  

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Location of vertex relative to x-axis: two units above

So, the parabola depicts a rain gauge off the ground

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PLZ HELP MEEE I REALY NEED IT PLZ SHOW YOUR WORK I NEED THE WORK TO BE SHOWN!!!
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Answer:

B.

Step-by-step explanation:

A.

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Expenses: 400,000 + 500,000 + 600,000 =

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D.

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