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1 year ago

I NEED HELP ASAP GIVE U 50 POINTS

Mathematics

1 answer:

Dovator [93]1 year ago

4 0

Answer:

37.5

Step-by-step explanation:

50+160=210.

210 is a 31.25% increase from 160

Multiply 120 by 1.3125 to get 157.5

subtract 120 from 157.5 to get a 37.5km increase or a 31.25% increase :)

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-5x-18y=-28 and -10x+9y=-11 solve elimination

Dmitry [639]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

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solving the system of the equation by elimination method

$\begin{bmatrix}-5x-18y=-28\\ -10x+9y=-11\end{bmatrix}$

$\mathrm{Multiply\:}-5x-18y=-28\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-10x-36y=-56$

$\begin{bmatrix}-10x-36y=-56\\ -10x+9y=-11\end{bmatrix}$

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$\underline{-10x-36y=-56}$

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$\begin{bmatrix}-10x-36y=-56\\ 45y=45\end{bmatrix}$

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$-10x-36=-56$

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$-10x-36+36=-56+36$

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$x=2$

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2 years ago

I NEED HELP ASAP GIVE U 50 POINTS​

I NEED HELP ASAP GIVE U 50 POINTS