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Dmitriy789 [7]
3 years ago
12

Solve the following system of equations by substitution. y=-1 5x + 7y = -2

Mathematics
1 answer:
Nady [450]3 years ago
7 0

Answer:

(1,-1)

Step-by-step explanation:

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Step-by-step explanation:

23 - 20=3

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3 years ago
EXPLAIN YOUR ANSWER
Bad White [126]
Solve the equation by substitution method.
To get b-2-3b=4. Then you substitute b into simplest to get, b=-3. Repeat the same process with a to get, a=-5. So your answer would be (-5, -3)
7 0
3 years ago
Need help finding the value of x
igor_vitrenko [27]

Answer:

The value of x is 26.

Step-by-step explanation:

In a triangle, the total angles is 180°. In order to find the value of x, you have to add up all the angles in terms of x and make it equals to 180°

2x + 3x + 50 = 180

5x + 50 = 180

5x = 180 - 50

5x = 130

x = 130 ÷ 5

x = 26

4 0
3 years ago
Read 2 more answers
Find the 2 digit number less than 50 using these clues. it can be divided exactly by 4. when 4 is added to it, it can be a divid
densk [106]

Answer:

16

Step-by-step explanation:

16 divided by 4=4

16+4=20

20 divided by 5=4

8 0
3 years ago
-8= -2(z+7) How do you sovle this equation
Anna71 [15]
-8= -2(z+7)                  Equation

\dfrac{-8}{-2} =z+7

 
      Divide \ both \ sides \ by \ -2
 
<span>\dfrac{8}{2} =z+7  
</span>
4=z+7&#10;&#10; &#10; 

4-7=z            Subtract \ 7 \ from \ both \ sides

z=-3              Solution
5 0
3 years ago
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