3 years ago

What is 0.000618 closest approximation.

Mathematics

1 answer:

natali 33 [55]3 years ago

7 0

6.18 x 10^4 explanation

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I need help,I need to use substitution but I don't know how

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If $y=x+6$ and $y=-2x-3$ , then you can replace $y$ in either equation with the equivalent expression given by the other equation. In this case, you have

$x+6=-2x-3$

and you can solve for $x$ .

$x+2x+6-6=-2x+2x-3+6\implies3x=3\implies\dfrac{3x}3=\dfrac33\impliesx=1$

Then $y=1+6=7$ .

For the second system, you can write

$5x-y=-5\implies 5x-5x-y=-5-5x\implies-y=-5-5x$

$\implies-(-y)=-(-5-5x)\implies y=5+5x$

Then substitute this into the second equation and you get

$3x-6(5+5x)=24\implies3x-30-30x=24\implies-27x-30+30=24+30$

$\implies-27x=54\implies x=2$

so that

$y=5+5(2)=15$

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4 years ago

50 POINTS!! + BRAINLIEST<br><br> Find the measure of ∠AED

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The answer is A.) 25

I just did 3x+10=5x and solved it

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Answer:

2 2/9

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2 divided by 9/10 = 2/1 / 9/10

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Step-by-step explanation:

simple answer

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