3 years ago

Substitution method please

Mathematics

1 answer:

JulijaS [17]3 years ago

5 0

Answer:

x = 3, y = -2

Step-by-step explanation:

Solving the bottom equation for y, we have y = 4 - 2x. Substitute that into the top equation, and solve for x.

4x - 3(4 -2x) = 18

4x - 12 + 6x = 18

10x - 12 = 18

10x = 30

x = 3

From this, we have y = 4 - 2(3) = 4 - 6 = -2

You might be interested in

To find the answer to the questions ask?

timurjin [86]

The answer is 6.

5*6-0=30

30=30

7 0

3 years ago

Read 2 more answers

Find the slope of a line parallel to each given line

rewona [7]

Answer:

7) D

8) A

9) A

10) D

11) C

12) B

Step-by-step explanation:

6 0

3 years ago

workers have painted 920 square feet of an office they have completed 80% of their job how many square feet do they need to. pai

Sloan [31]

80% = 0.80

divide the area done by the percentage:

920/0.80 = 1150

total area is 1150 square feet

7 0

3 years ago

Convert 714 years to minutes. (please show the steps to how you did the problem.)

Karolina [17]

1yr 525948.77
—— = ———————
714yr. X min

Now, cross multiply

X min = 714 yr
———. X 525948.77 min ➡️ x min = 375527421.78000003 min

714 years = 375527421.78000003 min

3.753e+ 8

5 0

3 years ago

(a + b - c)(a + b + c)

faltersainse [42]

Answer:

THE ANSWER IS ON THIS PICTURE

5 0

3 years ago