3 years ago

How do you do the expression

Mathematics

1 answer:

strojnjashka [21]3 years ago

3 0

L x (times) w ( length times width) 9x4=36 I think.

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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

9. Please help. If PG=x−4 and GO=12x+3, what is the length of PO⎯⎯⎯⎯⎯⎯⎯⎯?

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Answer:

I think the correct answer is -1.

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3 years ago

Jess recently started a business producing cosmetic products made from natural ingredients. She wants to advertise her products

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Answer in minutes: 342.86

Answer in hours: 5.7143

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A manager checked production records and found that a worker produced 160 units while working 40 hours. In the previous week, th

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Answer:

Decrease

Step-by-step explanation:

160/40 = 4 units/hour

138/36 = 3.833 units/hour

3.833 < 4

So it's a decrease

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A student government has five positions to fill and there are nine candidates running for any one of the position. how many diff

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Each candidate has a 1/5 chance to be a student governed

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