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2 years ago

Which equation is true

Mathematics

2 answers:

Ket [755]2 years ago

8 0

Answer:

Step-by-step explanation:

amm18122 years ago

5 0

Answer:

Step-by-step explanation:

a fraction is basically saying the numbers are being divided so if you do -20 divided by 2 then you would get negative 10 since a negative divided by a positive would be a negative.

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3 years ago

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Diano4ka-milaya [45]

Answer:

1. y = 5 - 2x

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3 years ago

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Norma-Jean [14]

Answer:

$\displaystyle x=-15$

Step-by-step explanation:

<u>Solution Of A System Of Equations </u>

A system of linear equations is given as

$\displaystyle \left\{\begin{matrix}ax+by=c\\ dx+ey=f\end{matrix}\right.$

There are many methods to solve them. We will use the method of reduction

The given system is

$\displaystyle \left\{\begin{matrix}2x+3y=45\\ x+y=10\end{matrix}\right.$

Multiplying the second equation by -3

$\displaystyle \left\{\begin{matrix}2x+3y=45\\ -3x-3y=-30\end{matrix}\right.$

Adding the resulting equations

$\displaystyle -x=15$

$\displaystyle x=-15$

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3 years ago

What is the solution to this equation?

Ksenya-84 [330]

Answer:

B. x= 5

Step-by-step explanation:

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2 years ago

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3 years ago

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