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iren2701 [21]
3 years ago
6

What is the solution to the above system of equations?

Mathematics
2 answers:
EleoNora [17]3 years ago
7 0

Answer:   A. (3,-2)

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable  x  

 

 [2]    4x = 5y + 22

 [2]    x = 5y/4 + 11/2

// Plug this in for variable  x  in equation [1]

  [1]    2•(5y/4+11/2) + 5y = -4

  [1]    15y/2 = -15

  [1]    15y = -30

// Solve equation [1] for the variable  y  

  [1]    15y = - 30  

  [1]   y = - 2  

// By now we know this much :

   x = 5y/4+11/2

   y = -2

// Use the  y  value to solve for  x  

   x = (5/4)(-2)+11/2 = 3  

Solution :

{x,y} = {3,-2}  

Phoenix [80]3 years ago
6 0

Answer:

1.B:(2,3)   2.C:4   3.B:(shaded on the right)   4.A:(x+y=7 6.50x+3.50y=33.50)  5.C:(3 quarters shaded at the top)  6.A:-4   7.C:6lbs(gc) 2lbs(jb) 5lbs(hc)    8.C:one solution    9.C:4x-7y=-12   -14x+4y=4   10.A:(3,-2)

Step-by-step explanation:

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Solve this system of liner equations.separate the -x and y - values with a comma. 2x=96-14y 9x=40-14y
Vaselesa [24]
<span>A) 2x=96-14y
B) 9x=40-14y
Rearranging algebraically
</span>
A) 2x <span>+14y = 96
B) 9x </span><span>+14y = 40</span>

Multiplying equation A by -1
A) -2x <span>-14y = -96 Then adding it to equation B
B) 9x </span><span>+14y = 40
7x = -56
x = -8

</span><span>2*-8 = 96 -14y
-16 -96 = -14y
-112 = -14y
y = 8


</span>
3 0
3 years ago
What is the next letter cd hi mn RS
nlexa [21]
Next letters would be WX
3 0
3 years ago
Examples:
Lady bird [3.3K]

Answer:

Just list all the coefficients.

Step-by-step explanation:

one thing to know

If a variable is just there, like x, it's coefficient is always a one

1. (12 and 4)

2. (46 and 10)

3. (12 and 14)

4. (10 and 10)

5. (17 and 32)

6. (5,7 and -12)

7. (36 and 70)

8. (3,19 and 10)

9. (7 and 16)

10. (8 and 5)

11. (9 and 120)

12. (12 and 1)

13. (7,15 and 1)

14. (4,-8 and 12)

15. (6,17, and -35)

7 0
2 years ago
Are these(4,1) 1,-3) (2,0) solutions to this graph?
kogti [31]
(4,1) : no because the line is solid.
(1,-3) : yes because the line is not solid.
(2,0) : no because the line is solid.

Solid lines represent < or >, and if a point is on the line directly, it’s not included in the solution set.
7 0
3 years ago
I know the answer to this question but how many solutions does it have?
BlackZzzverrR [31]

Answer:Hence, x = 5, y = 0 is the required solution.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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