3 years ago

Need help finding out what 3x=y and x-2y = 10

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

4 0

Answer:

x=-2, y=-6

Step-by-step explanation:

Simple substitution.

Since y is isolated in one of the equations already, you can plug it into the second equation.

x - 2(3x) = 10

x - 6x = 10

-5x = 10

x = -2

Sub. x = -2 into 3x = y:

3(-2) = y

y = -6

You might be interested in

A line contains (4,2) and (0,-1). What is the equation line?

densk [106]

The answer is B. Y= 3/4x-1

7 0

3 years ago

Read 2 more answers

For working 13 hours you earn $58.50 and $121.50 for 27 hours. What is your rate of pay in dollars per hour?

Contact [7]

Y2-y1/x2-x1
121.5-58.5/27-13
63/14
$4.5 an hour.

8 0

3 years ago

Read 2 more answers

XYZ Music Store sells new CDs,n, for $ 13.50, and used $6.50 .The store eamed $ 456 revenue last month. The store sold 14 more u

marysya [2.9K]

Answer:

Step-by-step explanation:

i did it in a test and i used a calculator

4 0

3 years ago

Help please this i will mark brainliest please

solniwko [45]

Step-by-step explanation:

please complete your question

6 0

3 years ago

Fram Algebraic expression for the following<br>a)Two times a number increase by three

Effectus [21]

Answer:

2x + 3

Step-by-step explanation:

Let the number be x

2x + 3

Hope it helps :)

Please mark my answer as the brainliest

3 0

2 years ago