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tino4ka555 [31]
3 years ago
14

How many solutions does the system 9x+y=3 9x-y=7 have?

Mathematics
1 answer:
Grace [21]3 years ago
5 0
These are two linear equations so they can have zero, one, or infinitely many solutions...

Subtracting one from the other eliminates x...

9x+y-9x+y=3-7

2y=-4

y=-2, making 9x+y=3 become:

9x-2=3

9x=5

x=5/9

So the single solution to this system of equations is the point (5/9, -2)
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1<br> 6 points<br> Solve for x:<br> 3x - 2 = x + 8<br> (Engin+bon.
gizmo_the_mogwai [7]

Answer:

x = 5

Step-by-step explanation:

3x - 2 = x + 8

Subtract x from each side

3x-x - 2 = x-x + 8

2x -2 = 8

Add 2 to each side

2x-2+2 = 8+2

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Divide each side by 2

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8 0
4 years ago
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Andre45 [30]

Answer:

A

Step-by-step explanation:

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4 0
3 years ago
Can someone solve and explain
S_A_V [24]
The answer is F.30
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6 0
3 years ago
A bat descends at a steady rate from 45.625 feet above the ground to a spot 36.5 above the ground in 3.75 seconds.
FrozenT [24]
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4 0
2 years ago
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Find the equation of the line that passes through the points (-2, 3) and (1, -6). Write your answer in Standard Form.
dlinn [17]
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y - 3 = -3(x +2)
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answer is 3x + y = -3 (third one)
7 0
3 years ago
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