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3 years ago

9

What is the solution to the linear equation?

1 answer:

Vikki [24]3 years ago

7 0

Answer:

x=-5

Step-by-step explanation:

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What is the x-value of the solution to the system of equations?

ValentinkaMS [17]

Answer:

The solution to the system of equations is:

$x=4,\:y=-3$

Step-by-step explanation:

Given the system of equations

$5x + 4y =8$

$2x- 3y = 17$

solving the system of equations

$\begin{bmatrix}5x+4y=8\\ 2x-3y=17\end{bmatrix}$

$\mathrm{Multiply\:}5x+4y=8\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:10x+8y=16$

$\mathrm{Multiply\:}2x-3y=17\mathrm{\:by\:}5\:\mathrm{:}\:\quad \:10x-15y=85$

$\begin{bmatrix}10x+8y=16\\ 10x-15y=85\end{bmatrix}$

$10x-15y=85$

$-$

$\underline{10x+8y=16}$

$-23y=69$

$\begin{bmatrix}10x+8y=16\\ -23y=69\end{bmatrix}$

solve for y

$-23y=69$

Divide both sides by -23

$\frac{-23y}{-23}=\frac{69}{-23}$

$y=-3$

$\mathrm{For\:}10x+8y=16\mathrm{\:plug\:in\:}y=-3$

$10x+8\left(-3\right)=16$

$10x-24=16$

$10x=40$

Divide both sides by 10

$\frac{10x}{10}=\frac{40}{10}$

$x=4$

Thus, the solution to the system of equations is:

$x=4,\:y=-3$

7 0

2 years ago

54 is 90% of what number?

Zarrin [17]

The answer is 60 surprisingly

7 0

3 years ago

Sydney’s teacher says she may have her report card percentage based on either the mean or the median and she can drop one test s

Yuri [45]

Answer:

I'm jus gonna guess 94 if right brainliest plzzz

4 0

3 years ago

Read 2 more answers

Find the IQR of the data set in the dot plot

Sholpan [36]

Answer:

5.5 - 1.5 = 4

Brainliest pls

7 0

3 years ago

Is there a rational number between 1/7 and 1/8

telo118 [61]

1/7 = 2/14 = <span> <span> <span> 0.1428571429 </span> </span> </span>
1/8 = 2/16 = 0.125
2/15 = <span> <span> <span> 0.1333333333 </span> </span> </span>
So, 2/15 is between 1/7 and 1/8
(and there are an infinite amount of numbers between 1/7 and 1/8)

5 0

3 years ago