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Novosadov [1.4K]
3 years ago
9

-3 +3(n+8)= 2(1 + 6n) - 8

Mathematics
2 answers:
satela [25.4K]3 years ago
6 0

Answer:

n=3

Step-by-step explanation:

Equation: −3+3(n+8)=2(1+6n)−8

1. Simplify both sides of the equation.

−3+3(n+8)=2(1+6n)−8

−3+(3)(n)+(3)(8)=(2)(1)+(2)(6n)+−8 (Distribute)

−3+3n+24=2+12n+−8

(3n)+(−3+24)=(12n)+(2+−8) (Combine Like Terms)

3n+21=12n+−6

3n+21=12n−6

2. Subtract 12n from both sides.

3n+21−12n=12n−6−12n

−9n+21=−6

3. Subtract 21 from both sides.

−9n+21−21=−6−21

−9n=−27

4. Divide both sides by -9.

−9n /−9 = −27 /−9

n=3

Now we can check your answer! All you have to do is plug in the 3.

−3+3(3+8)=2(1+6(3))−8

1. Solve the first part of the equation.

−3+3(3+8)

=−3+(3)(11)

=−3+33

=30

2. Solve the second part.

2(1+(6)(3))−8

=2(1+18)−8

=(2)(19)−8

=38−8

=30

3. Are the answers equal?

30=30

Hope this helped!

lilavasa [31]3 years ago
4 0

Answer:

3 =n

Step-by-step explanation:

-3 +3(n+8)= 2(1 + 6n) - 8

Distribute

-3 +3n +24 = 2 +12n -8

Combine like terms

21+3n = 12n -6

Subtract 3n from each side

21+3n-3n = 12n-3n -6

21 = 9n -6

Add 6 to each side

21+6 = 9n-6+6

27 = 9n

Divide each side by 9

27/9 = 9n/9

27/9 =n

Divide the top and bottom by 3

3 =n

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The line of best fit is a linear function that is closest to all the points and shows the trend in the data. Since the data is going up ultimately, the slope of the line will be positive. Only B and C are options.

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3 years ago
Jimmy Walked a total of 6 miles last week. This week, he walks 2 miles each hour. If he walks 6 hours this week, how many miles
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Step-by-step explanation:

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3 years ago
The speed at which cars travel on the highway has a normal distribution with a mean of 60 km/h and a standard deviation of 5 km/
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The z-score of the speed value gives the measure of dispersion of the from

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The z-score for a speed of 75 km/h is given as follows;

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The probability that the speed of a car is between 63 km/h and 75 km/h is therefore;

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The probability that the speed of a car is between 63 km/h and 75 km/h is

<u>0.273</u>.

Learn more here:

brainly.com/question/17489087

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Answer:

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