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Tom [10]
3 years ago
11

What is the value of n when 7n – 18 = 5n + 6?

Mathematics
2 answers:
forsale [732]3 years ago
4 0

Answer:

n=13

Step-by-step explanation:

7n-18=5n+6   move variables to 1 side

-5           -5    (in this case subtract 5 on both sides of the equal sign)

2n-18=  6        now you want to get the variable alone

   +18   +18     (in this case add 18 on both sides of the equal sign)

2n=26             now you want to get the variable (N) by itself

/2    /2            ( so divide 2 on both sides of the equal sign )

n=13  

kirill [66]3 years ago
3 0

Answer:

n=12

Step-by-step explanation:

7n-18 =5n+6

+18 to both sides

7n=5n+24

-5n from both sides

2n=24

divide by 2

n=12

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Answer:

Step-by-step explanation:

Speed = distance travelled/time

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The horse ran 1200 m in 60 seconds. This means that the speed is

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Since the horse's rate or speed is the same at each scenario, it means that the relationship between the distance covered by the horse and the time taken is proportional.

Let k represent the constant of proportionality. The constant of proportionality is 20. It represents speed of the horse.

Let d represent the distance in meters.

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