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Kay [80]
3 years ago
13

Can someone explain what's n+1-3n=-5+n+1-2

Mathematics
2 answers:
son4ous [18]3 years ago
8 0
N+1-3n=5+n+1-2

Simplify it

-2n+1 = n+4

Add 2n to both sides

1 = 3n+4

Subtract 4 from both sides

-3 = 3n

Divide by 3

n = -1
trapecia [35]3 years ago
5 0
N + 1 - 3n = -5 + n + 1 - 2

Combine like terms:

n - 3n = -2n

-2n + 1 = -5 + n + 1 - 2

Combine like terms:

-5 + 1 - 2 = -6

-2n + 1 = n - 6

Subtract 'n' to both sides:

-3n + 1 = -6

Subtract 1 to both sides:

-3n = -7

Divide -3 to both sides:

n = 2 1/3 or 7/3
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Select all number that fall between 7 and 8
Aliun [14]

Answer:

7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, and 7.9

Step-by-step explanation:

There is no whole number, but there are decimals that fall in between 7 and 8.

~theLocoCoco

6 0
3 years ago
Can you guys help me when you have time
hodyreva [135]

Answer:

c

Step-by-step explanation:

the reasoning for this is because it is technically 2 squared times 3 but 2x2x3 is the same thing

4 0
2 years ago
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The times of the runners in a marathon are normally distributed, with a mean of 3 hours and 50 minutes and a standard deviation
serious [3.7K]

The probability that a randomly selected runner has a time less than or equal to 3 hours and 20 minutes is 0.16 or 16%.

<h3>What is normally distributed data?</h3>

Normally distributed data is the distribution of probability which is symmetric about the mean.

The mean of the data is the average value of the given data.

The standard deviation of the data is the half of the difference of the highest value and mean of the data set.

The times of the runners in a marathon are normally distributed, with

  • Mean of 3 hours and 50 minutes
  • Standard deviation of 30 minutes.

Refere the probabiliity table attached below. The probability of Z being inside the 1 Standard daviation of mean is 0.84.

The probability of runner selected with time less than or equal to 3 hours and 20 minutes,

P=1-0.84\\P=0.16

Thus, the probability that a randomly selected runner has a time less than or equal to 3 hours and 20 minutes is 0.16 or 16%.

Learn more about the normally distributed data here;

brainly.com/question/6587992

4 0
1 year ago
Determine a coefficient in 9x + 4y –13
Maurinko [17]

Answer: 9 and 4

Step-by-step explanation:

A coefficient is a number that is before a variable and in this case it’s 9 and 4 that are before the variables x and y.

3 0
2 years ago
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Please help me. Explanation needed.
Lady_Fox [76]

Answer:

D, 1250 square feet

Step-by-step explanation:

Area of a circle:

\pi * r^2

Diameter is twice the radius, so the radius is 20 ft.

Thus the area of grass is 400pi

6 0
3 years ago
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