3 years ago

I need help with this

Mathematics

1 answer:

viva [34]3 years ago

6 0

Answer:

correct

Step-by-step explanation:

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

ddd [48]

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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2 years ago

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20% of what number is 80? I need the right answer, this is my last shot of passing.

LekaFEV [45]

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I need help with this ​

I need help with this