3 years ago

Х+у= 20 3х – 3 = 30 Which of x and y satisfy this system of equations?

Mathematics

1 answer:

butalik [34]3 years ago

8 0

Answer:

x = 11, y = 9

Step-by-step explanation:

Given the 2 equations

x + y = 20 → (1)

3x - 3 = 30 → (2)

In (2) add 3 to both sides

3x = 33 ( divide both sides by 3 )

x = 11

Substitute x = 11 into (1)

11 + y = 20 ( subtract 11 from both sides )

y = 9

You might be interested in

Please help me with this geometry question. i attached an image.

PilotLPTM [1.2K]

The measure of angle AEB is 19 degrees

3 0

2 years ago

What is four fifths equivalent to

skad [1K]

Answer:

8/10 or 16/20

Step-by-step explanation:

6 0

2 years ago

On a coordinate plane, a line goes through points (negative 3, 0) and (0, 3).

Darina [25.2K]

Answer:

Slope-Intercept form: y=x+3

Step-by-step explanation:

The Slope-Intercept form is y=mx+b

You first have to find the slope. You can use the graph and count or you can use the table and use the slope formula $m=\frac{y_2-y_1}{x_2-x_1}$ . You then have to find (b) which is the y-intercept. You can find this easily using the graph or the table.