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N76 [4]
3 years ago
15

Which of the following equations have the solution v=3v=3?

Mathematics
1 answer:
kari74 [83]3 years ago
7 0

ANSWER:

v = 3 is only a solution to equations 1 and 5.

STEP-BY-STEP EXPLAINATION:

Equation 1:

\frac{v}{3}   + 9 = 10

\frac{v}{3} = 10 - 9

\frac{v}{3} = 1

v = 1(3)

v = 3

Therefore, v = 3 is a solution.

Equation 2:

4 = 7v - 24

4 + 24 = 7v

28 = 7v

\frac{28}{7}  = v

4 = v

Therefore, v = 3 is not a solution.

Equation 3:

16 = 2 + 5v

16 - 2 = 5v

14 = 5v

\frac{14}{5}  = v

Therefore, v = 3 is not a solution.

Equation 4:

5 - 7v = 19

- 7v = 19 - 5

- 7v = 14

v =  \frac{14}{ - 7}

v = -  2

Therefore, v = 3 is not a solution.

Equation 5:

3 + 2v = 9

2v = 9 - 3

2v = 6

v =  \frac{6}{2}

v = 3

Therefore, v = 3 is a solution.

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