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2 years ago

Pls help, 'll mark the brainliest. SOS

Mathematics

1 answer:

miv72 [106K]2 years ago

5 0

Answer:

Which one do you need the answer for

Step-by-step explanation:

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5x−4y=34<br> −x+8y=22<br> elimination

Brut [27]

Answer:

The solution to the system of equations is:

$x=10,\:y=4$

Step-by-step explanation:

Given the system of equations

$\begin{bmatrix}5x-4y=34\\ -x+8y=22\end{bmatrix}$

Multiply -x+8y=22 by 5: -5x+40y=110

$\begin{bmatrix}5x-4y=34\\ -5x+40y=110\end{bmatrix}$

so adding the equations

$-5x+40y=110$

$+$

$\underline{5x-4y=34}$

$36y=144$

solve 36y = 144 for y:

$36y=144$

divide both sides by 36

$\frac{36y}{36}=\frac{144}{36}$

Simplify

$y=4$

For 5x-4y=34 plug in y=4

$5x-4\cdot \:4=34$

$5x-16=34$

Add 16 to both sides

$5x-16+16=34+16$

Simplify

$5x=50$

Divide both sides by 5

$\frac{5x}{5}=\frac{50}{5}$

Simplify

$x=10$

Therefore, the solution to the system of equations is:

$x=10,\:y=4$

3 0

2 years ago

When both pipes are working together, how long does it take them to fill the tank?

AleksAgata [21]

Well, since 1 tank takes 60 minutes (hour) and the other takes 40 minutes , add those to get 100 minutes . Divide 6000 by 100 to see how long it takes to fill the tank

Answer :60 minutes or an hour

Hope this helps!

3 0

3 years ago

Consider the two groups listed below. Which statement correctly describes the relationship of the two sets if they were mapped?

-Dominant- [34]

Answer:

i do not know

Step-by-step explanation:

5 0

3 years ago

Enter the inequality of the graph below.

aev [14]

The slope is (8-2)/(0-2)=-3
the y intercept is 8
the equation is y=-3x+8
the area to the left is shaded, and the line is solid, so y $\leq$ -3x+8

4 0

2 years ago

a parallelogram has an area of 108 square inches . the base of the parallelogram is 18 inches . explain how you could find the h

Paraphin [41]

The formula for perimeter is

Side a x2 + side b x2

So just multiply 18 by two, and subtract it from 108

4 0

2 years ago