1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zimovet [89]
3 years ago
7

Y=x+2 2x-y=-4 Solve the systems of equations

Mathematics
2 answers:
Simora [160]3 years ago
6 0

Answer: x = -2, y = 0

Step-by-step explanation:

y=x+2\\2x-y=-4

Substitute y = x+2 in 2x-y=-4

Then we get, 2x-(x+2)=-4

2x-x-2=-4\\x-2=-4\\x=-4+2\\x=-2

Then substitute x = -2 in any equations, just only one equation. For me, I'd substitute x = -2 in y = x+2

y=-2+2y=0

So the answer is x = -2 and y = 0

larisa86 [58]3 years ago
4 0

Answer:

Step-by-step explanation:

Given that,

y=x+2 equation 1

2x-y=-4 equation 2

This is a simultaneous equation.

Substitute equation 1 into equation 2

2x-y=-4. Since y=x+2

2x-(x+2) = -4

2x-x-2 = -4

x-2 = -4

x = -4+2

x = -2

Also from equation 1

y=x+2

Since x=-2

y=-2+2

y=0

Then, solution (x, y) = (-2,0)

You might be interested in
15. Greg and Alana went out to dinner. Their dinner bill came to $68.89.
timofeeve [1]

Answer:

67.72

Step-by-step explanation:

68.89-10.00=58.89 + 15% (8.83) = 67.72

3 0
3 years ago
Finish solving the system of equations –9.5x – 2.5y = –4.3 and 7x + 2.5y = 0.8 using the linear combination method. 1. Determine
mars1129 [50]

Answer:

Step-by-step explanation:

The given equations are:

-9.5x – 2.5y = –4.3                    (1)

and 7x + 2.5y = 0.8                  (2)

Adding equation (1) and (2) together, we get

-9.5x-2.5y+7x+2.5y=-4.3+0.8

⇒-2.5x=-3.5

⇒x=1.4

Now, substitute the value of x=1.4 in equation (1),

-9.5(1.4)-2.5y=-4.3

⇒-13.3-2.5y=-4.3

⇒-13.3+4.3=2.5y

⇒-9=2.5y

⇒y=-3.6

Thus, the value of x and y are 1.4 and -3.6 respectively.

7 0
3 years ago
Read 2 more answers
Rewrite decimal as a fraction 7\9
ad-work [718]
7/9 is .77 repeating
5 0
3 years ago
Read 2 more answers
Two square pyramids have the same volume. For the first pyramid, the side length of the base is 20 in. and the height is 21 in.
Mrrafil [7]
The volume of the pyramid is calculated by multiplying the area of the base by the height of the figure. For this item, for the figures to have the same volume,
                          V = B1H1 = B2H2
Then, we substitute the given values, and since we are not given the shape of the base and the volume of the entire figure, we can just solve it through the way below.
                        (20 in)(21 in) = (x in)(84 in)
The value of x in the problem is 5 inches. 
3 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=3%20%2B%20%284%20%2B%205%29%20%3D%20%283%20%2B%204%29%20%2B%20m" id="TexFormula1" title="3 + (
max2010maxim [7]

Answer:

The value of m in the expression is 5

Step-by-step explanation:

Given expression as :

3 + ( 4 + 5 ) = ( 3 + 4 ) + m

Or,  3 + ( 9 ) = ( 7 ) + m

Or,  12  = 7 + m

∴   m = 12 - 7 = 5

Hence The value of m in the expression is 5   Answer

8 0
3 years ago
Other questions:
  • Please help!! please please
    14·1 answer
  • A ball is kicked into the air and follows the path described by h(t)= – 4.9t^2 + 6t + 0.6, where t is the time in seconds and h
    15·1 answer
  • please help me with this i asked last time but it didn’t some the important stuff so i’m just putting a picture ^
    8·1 answer
  • If the length of a rectangle is 8 and the width is 10. What is its area?
    13·2 answers
  • You made Marcellus 3 times as tall as Dan but you dragged Marcellus’s mouth to be 5.46 times as wide as Dan’s mouth. A proportio
    13·1 answer
  • Help ASAP. Like right now
    9·1 answer
  • What is $12.56 rounded to the nearest dollar? plzz help
    11·2 answers
  • A recipe for pie please help me please
    7·2 answers
  • What is the difference between 1/2 of 30 and 1/4 of 30?
    9·2 answers
  • A customer's stock value seems to be rising exponentially. The equation for
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!