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RUDIKE [14]
3 years ago
13

Arithmetic series help!!!!

Mathematics
1 answer:
jekas [21]3 years ago
4 0

The initial term of the sequence is 15. The common difference is 3, so the n-th term (an) is

... an = 15 + 3(n-1)

For n=14, the 14th term of the sequence is

... a14 = 15 + 3(14 -1) = 54

The sum of terms is the average of the first and last, multiplied by the number of terms:

... sum = (15 + 54)/2·14 = 7·69 = 483

The appropriate answer choice is

... 54; 483

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xxTIMURxx [149]

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$48

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2 years ago
What is the mean of this data set? {6, 11, 5, 2, 7} Enter your answer as a decimal in the box.
Elenna [48]

Answer:

The mean is 6.2.

Step-by-step explanation:

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4 0
2 years ago
Which expression is equivalent to r to the 9th over r to the 3rd
alisha [4.7K]

Answer:

r^{6}

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(excuse my bad formatting)

<u>The expression:</u>

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Remember, anything and everything has a coefficient or denominator of 1.

So, we can cancel 3 r's from the numerator and denominator.

<u>r • r • r • r • r • r • 1</u>

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<h3>Motion of the golf ball</h3>

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When the golf ball reaches the ground, the final velocity will be zero.

Velocity of the golf ball is change in height with time.

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Thus, the time taken for the golf ball to reach the ground is 1 s.

Learn more about time of  motion here: brainly.com/question/2364404

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