All categories

3 years ago

Solve the system of linear equations by graphing. y = x +2 y = -x -4 The solution is

Mathematics

2 answers:

Mnenie [13.5K]3 years ago

8 0

Answer:

Solution: (-3,-1)

7nadin3 [17]3 years ago

7 0

Answer:

x = -3

Step-by-step explanation:

x + 2 and -x-4 is equal, because they are both y

we want to move the variables to one side and the numbers to the other side

x+x = 2x, and -4-2 = -6

so 2x = -6

and x = -3

You might be interested in

9. Solve for x: 2x – y = (3/4)x + 6.

AlekseyPX

Answer:

x = 4(y + 6)/5

Step-by-step explanation:

2x - y = (3/4)x + 6

2x - (3/4)x = y + 6

(8x - 3x)/4 = y + 6

5x/4 = y + 6

5x = 4(y + 6)

5x = 4y + 24

x = (4y + 24)/5

Therefore, x = 4(y + 6)/5

4 0

3 years ago

Find the area of the shape shown<br> below.

steposvetlana [31]

Answer:

The area of the figure is 28 units².

Step-by-step explanation:

Find the area of the full rectangle, ignoring the triangle.

$a = lw \\ a = 4 \times 8 = 32$

Then, find the area of the triangle:

$a = \frac{bh}{2} \\ a = \frac{2 \times 4}{2} \\ a = 4$

Finally, subtract:

$32 - 4 = 28$

7 0

3 years ago

Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete

icang [17]

Answer:Mark Is 9 years old; Christine is 5 years old

Step-by-step explanation:

Present age

LET mark age be x

Christine be x-4 yrs

In 3 yrs Time

Mark will be x+3 yrs old

Christine will be (x -4 +3) = x-1 years old

Also, In 3 years time

Christine = 2/3 Mark

such that

x-1 = 2/3(x+3)

x -1= 2x+6 / 3

3x -3= 2x+6

3X--2X = 6+3

=X=9

Mark Is 9 years old

Christine is x -4 = 9-4=5 years old

5 0

3 years ago

The value of a car decreases by 20 percent per year. Mr.Sing purchases a 22,000 automobile.What is the value of the car at the e

Sloan [31]

Answer:

13,200

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Need help pls and th x s

Sedaia [141]

Answer:

times 5

Step-by-step explanation:

4 0

3 years ago