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Alchen [17]
2 years ago
9

Which expression is undefined? A. 0➗7 B. 9/(-6+6) C.(5-5)/8 D.(0-10/-5

Mathematics
1 answer:
egoroff_w [7]2 years ago
7 0
I am almost sure that the answer Is B
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Write an equation of the line that passes through the points (2,−1) and (0,1).
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0,1 is the y-intercept 
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How many solutions does this system have?
Julli [10]

Answer:

one solution

Step-by-step explanation:

* Lets start to solve the question

- The 1st equation x - y = -4

- The 2nd equation 3x + y = 8

- We will use the elimination method to solve this system of equation

∵ x - y = -4 ⇒ (1)

∵ 3x + y = 8 ⇒ (2)

- Add the two equation (1) and (2) to eliminate y

∴ x + 3x = -4 + 8

∴ 4x = 4

- Divide both sides by 4

∴ x = 1

- Substitute the value of x in equation (1) or equation (2) to find

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- We will use equation (1)

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∴ -y = -5

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∴ y = 5

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6 0
3 years ago
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How to estimate 5x179
QveST [7]

Answer:

895

Step-by-step explanation:

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6 0
3 years ago
Jordana wrote the equation for a linear relationship as y = -8x-4. For what value of x is y equal to -16
victus00 [196]
So our two equations are y=-8x-4 and y=-16, and since in both equations, something equals the same y, those two are the same. So we can combine the two into -16=-8x-4. In the question, they are asking to solve for x. So to do that, you need to isolate your variable. Now for solving algebraic equations, you use reverse PEMDAS (SADMEP), meaning you add 4 to both sides to clear the -4 one the rights side to get -12=-8x. Then you divide both sides by -8 to get 12/8, which simplifies to 3/2. 
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3 years ago
In the solution of the equation 5 + 3x = -2x + 9, 2x is added to the equation first. Which of the following should be done next?
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You should subtract 5 from both sides next.


Adding 2x to both side will give you the following.


5 + 5x = 9


And since you got all the variable terms to the left, you want all the constant terms to the right. You do that by subtracting 5 from both sides. This gives you the below statement.


5x = 4


You can then divide to solve.


x = 4/5 or .8

5 0
3 years ago
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