2 years ago

Evaluate x+3xy - 2y for x= 4 and y

Mathematics

2 answers:

qwelly [4]2 years ago

3 0

Hopefully it’s correct

scZoUnD [109]2 years ago

3 0

Uhh I feel like this is legit

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-8x-27=-7\left(1+2x\right)+2x

Darina [25.2K]

Answer:

$x=5$

Step-by-step explanation:

$-8x-27=-7\left(1+2x\right)+2x$

Expand:

$-8x-27=-7\times 1-7\times 2x+2x$

$-8x-27=-7-12x$

Add 27 to both sides:

$-8x-27+27=-7-12x+27$

$-8x=-12x+20$

Add 12x to both sides:

$-8x+12x=-12x+20+12x$

$4x=20$

Divide both sides by 4:

$\frac{4x}{4}=\frac{20}{4}$

$x=5$

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3 years ago

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damaskus [11]

I think the answer would be B

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Dmitriy789 [7]

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Alexus [3.1K]

Answer:

Step-by-step explanation:

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Read 2 more answers

Guys help me please I need this in September 27,2018

Dmitrij [34]

Okay so first off first off I believe 4-6 is linear because it is increasing at a steady rate and 7 is exponential because it has a constant rate of growth. I’m not 100% I’m correct on that. 8 is linear, 9 is exponential.
For 4: f(x)=-1/2x + 1
5: f(x)=-2x +4
That’s all I know right now. I hope it helps a little bit

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3 years ago