Ask question

Ask question

All categories

3 years ago

6

Use substitution to solve the system of equations.

2 answers:

polet [3.4K]3 years ago

8 0

The answer is (3,-6)

murzikaleks [220]3 years ago

4 0

X-3*(-2x)=21
x+6x=21
7x=21
X=21/7
X=3
Now you substitute x=3 in the other equation
Y=-2*3
Y=-6

You might be interested in

Four students draw a design for a class flag. Each flag is black and white. Which designs have the same fractions of black and w

Orlov [11]

Where is the picture

3 0

3 years ago

Someone help me with this algebra question please 100% correct only

STALIN [3.7K]

Let x represent the width. Since the length is 3 more than 4 times the width, that would be equal to 3+4x. The perimeter is the sum of all sides, so that would be x+x+3+4x+3+4=86. Combine like terms, which would result in 10x+6=86. Subtract 6 from both sides giving you 10x=80. Divide by 10 giving you x=8. That means that the width is 8. The length is 3+4x. Substitute 8 for x giving you 3+4(8). Multiply, giving you 3+32, then add, which would give you 35. 35 is the length.

7 0

3 years ago

Write an expression for the calculation, divide 10 in half and subtract from 50 divided into fifths

allsm [11]

[(10/.5)-50]/5
i think...

6 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=3y%20-%205x%20%3D%2010" id="TexFormula1" title="3y - 5x = 10" alt="3y - 5x = 10" align="absmid

kompoz [17]

Answer:

$\dfrac{5}{3}$

Step-by-step explanation:

To find the gradient (slope) of the given <u>linear relation</u>, use <u>arithmetic operations</u> to isolate y:

Given relation:

$3y-5x=10$

Add 5x to both sides:

$\implies 3y-5x+5x=10+5x$

$\implies 3y=5x+10$

Divide both sides by 3:

$\implies \dfrac{3y}{3}=\dfrac{5}{3}x+\dfrac{10}{3}$

$\implies y=\dfrac{5}{3}x+\dfrac{10}{3}$

<u>Slope-intercept form of a linear equation</u>

$y = mx+b$

where:

m is the slope (gradient)
b is the y-intercept

Comparing the rewritten equation with the slope-intercept formula, the gradient (slope) of the given linear relation is ⁵/₃.

Learn more about linear equations here:

brainly.com/question/27317293

brainly.com/question/27781455

7 0

1 year ago

Read 2 more answers

The base of a cube is 1/4 ft squared. Whats the volume of the cube? also can you explain your answer so i can answer other quest

MrMuchimi

It would be 1/64 I hope this helps with your question.

8 0

3 years ago

Read 2 more answers