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4 years ago

What are 3 solutions to -4x+3y=-6

1 answer:

3 0

Let's solve for x.−4x+3y=−6Step 1: Add -3y to both sides.−4x+3y+−3y=−6+−3y−4x=−3y−6Step 2: Divide both sides by -4.−4x−4=−3y−6−4x=34y+32Answer:x=3/4y+3/2

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If 2 liters of sea water contain 70 grams of salt, how much salt is in 32 liters of seawater?

Liono4ka [1.6K]

Answer:

There is 1,120 grams of salt in 32 liters of seawater.

Step-by-step explanation:

32 / 2 = 16

16 * 70 = 1,120

8 0

3 years ago

Homework: 5.1 Systems of Linear Equations

Klio2033 [76]

Answer:

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

$x=8,\:y=5$

Step-by-step explanation:

Given the system of linear equations

$7x-y=51$

$x+3y=23$

solving by the elimination method

$\begin{bmatrix}7x-y=51\\ x+3y=23\end{bmatrix}$

$\mathrm{Multiply\:}x+3y=23\mathrm{\:by\:}7\:\mathrm{:}\:\quad \:7x+21y=161$

$\begin{bmatrix}7x-y=51\\ 7x+21y=161\end{bmatrix}$

$7x+21y=161$

$-$

$\underline{7x-y=51}$

$22y=110$

$\begin{bmatrix}7x-y=51\\ 22y=110\end{bmatrix}$

now solving for y

$22y=110$

$\mathrm{Divide\:both\:sides\:by\:}22$

$\frac{22y}{22}=\frac{110}{22}$

$y=5$

$\mathrm{For\:}7x-y=51\mathrm{\:plug\:in\:}y=5$

$7x-y=51$

$7x-5=5$

$7x=56$

$\mathrm{Divide\:both\:sides\:by\:}7$

$\frac{7x}{7}=\frac{56}{7}$

$x=8$

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

$x=8,\:y=5$

7 0

3 years ago

Please help BRAINLIEST

Veseljchak [2.6K]

A) (1,3)
B) (-4,0)
C) (-6,0)
D) (2,4)
E)cant do E

I don’t know if there are other questions because I can only see up to E.
I hope this helped though and please mark as brainliest

7 0

3 years ago

What does it mean please help urgent

Furkat [3]

It is a pronoun that is used to replace a previously mentioned noun or is used to identify a person.

6 0

3 years ago

The length of a rectangle is 5 times it’s width. If the perimeter of a rectangle is 72 m, find its area

Olenka [21]

X = width. the perimeter of a rectangle is 2*length + 2*width, so the perimeter of this rectangle is 2x + 2(5x) = 72. distribute the two to get 2x + 10x = 72. so 12x = 72. divide by twelve to get x = 6. the width is six, so the perimeter (5x) is 30. the area of a rectangle is length times width, 30*6, so the area is 180 m.

6 0

4 years ago