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Nat2105 [25]
3 years ago
8

How many solutions does this have? y=5x+-2 y=5--2x

Mathematics
1 answer:
Delvig [45]3 years ago
5 0

Answer:

one solution (2.333, 9.6666)

Step-by-step explanation:

The ys have to be equal for there to be 1 solution. Let's see if they are. Equate the ys. - -2x becomes 2x

5x +-2 = 2x + 5                   Write the left with 1 sign

5x - 2 = 2x + 5                    Subtract 2x from both sides

<u>2x          2x</u>

3x - 2 = 5                            Add 2 to both sides

    <u>  2     2</u>

3x = 7                                  Divide by 3

x = 7/3

x = 2 1/3

y = 5x - 2

y = 5(2 1/3) - 2

y = 11 2/3 - 2

y = 9 2/3

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