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Zarrin [17]
2 years ago
11

How to solve using Substitution or Elimination??? Help!!! y=3x-1 y=2x+2

Mathematics
2 answers:
disa [49]2 years ago
7 0
The answer is x=3 and y=8, here’s the work—


Y=3x-1
Y=2x+2
2x+2=3x-1
2=x-1
X=3

3(3)-1=y
9-1=y
8=y
Iteru [2.4K]2 years ago
3 0

Answer:

x=3

y=8

Step-by-step explanation:

the given equations are y=3x-1 --------(1)

and y=2x+2---------(2)

Using substitution method,

and solving y=3x-1

y+1=3x

or y+1/3 =x ------(3)

Putting the value of x= y + 1 / 3 in equation 2

y= 2x+2

or, y = 2 ( y + 1/3) +2

or, y= 2y + 2 / 3 <u>+</u><u>2</u>

<u>or</u><u>,</u><u> </u><u>y</u><u> </u><u>=</u><u> </u><u>2y</u><u> </u><u>+</u><u> </u><u>2</u><u> </u><u>+</u><u> </u><u>6</u><u> </u><u>/</u><u>/</u><u> </u><u>3</u><u> </u><u>(</u> Taking LCM)

Or, 3 y = 2y + 2 + 6 ( <u>the</u><u> </u><u>denominator</u><u> </u><u>gets</u><u> </u><u>multiplied</u><u> </u><u>to</u><u> </u><u>y</u><u>)</u>

OR, 3 Y - 2Y =6 PLUS 2

or y = 8

therefore, y=8

now substituting the value of y=8 in equation (3)

y + 1 /3 = x

or ,,, 8 plus 1 by 3 =x

or,,,,, 9 by 3 =x

Therefore, x is 3

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1/3x=5/12 show your work
insens350 [35]

Answer:

4/5 or 0.8

Step-by-step explanation:

1/3x = 5/12

<em>cross</em><em> </em><em>multiply</em>

(12×1) = (5×3x)

<em>divide</em><em> </em><em>through</em> <em>by</em> <em>1</em><em>5</em>

x = 12/15

x = 4/5 <em>o</em><em>r</em><em> </em>0.8

3 0
3 years ago
Cold antoje help me answering this please :).<br>Fake answer will be reported. ​
Harrizon [31]

Answer:

158.1

Step-by-step explanation:

Distance is the square root of (x1-x2)^2+(y1-y2)^2

square root of (-4-146)^2+(2-52)^2

square root of 150^2+50^2

square root of 22500+2500

square root of 25000

50sqrt10

Rounding is 158.1

5 0
3 years ago
Which rate is the lowest price?
m_a_m_a [10]

a. 1.15

b. 6.20 divided by 4 = 1.55

c. 5 divided by 4 = 1.25

d. 5.50 divided by 5 = 1.1


D is correct

6 0
3 years ago
Read 2 more answers
Question 9
kiruha [24]

The slope of the linear equation is 20 and the y-intercept is 150

<h3>What is a Slope?</h3>

Slope measures how steep a straight line is. It is described as rise over run.

The slope of the linear equation can be found as follows;

He opens the account with $150 and he plans to save $20 each week. Therefore,

let

x = number of weeks

Therefore,

  • y = 20x + 150

where

y = amount in his account after x number of weeks.

Using the slope intercept equation,

<h3>Slope intercept equation:</h3>
  • y =mx + c

where

m = slope

c = y-intercept

Therefore, the slope of the linear equation is 20 and the y-intercept is 150

learn more on slope here: brainly.com/question/8057577

7 0
2 years ago
2 3/4+12 1/2 = what is it
natta225 [31]
An equation
what else could it be?
8 0
2 years ago
Read 2 more answers
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