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2 years ago

Work out the third term of the sequence with nth term 3(n+2).

Mathematics

2 answers:

svetlana [45]2 years ago

7 0

Answer:

Step-by-step explanation:

To find the third term substitute n = 3 into the n th term expression

$a_{3}$ = 3(3 + 2) = 3 × 5 = 15

Anon25 [30]2 years ago

6 0

Answer:

Step-by-step explanation:

n = 3

3(n + 2) = 3(3+2) = 3*5 = 15

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3 years ago

Read 2 more answers

Find element a23 if matrix A, if A=|2 -3 4| |5 0 -6| |7 2 -8|

Elis [28]

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-6

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2 years ago

Over the last 2.5 years, the water level in a lake has changed by -0.3 feet per year. Scientists predict that the water level wi

klio [65]

Answer:

Step-by-step explanation:

"In the last 2.5 years, the water level has decreased 0.75 feet."

In the very first statement it has been stated that over the last 2.5 years, the water level in a lake has changed by -0.3 feet per year. That means in the last 2.5 years , total decrease in level is as follows

2.5 x - 0.3 = - .75 ft .

So the statement is true.

"The overall change of the water level after 7.5 years will be -2.75 feet."

This statement appears to be false based on information provided

No prediction regarding rate of decrease for a period beyond 5 year has been made so any statement with respect to a timeline of 7.5 years may turn out to be false.

"The change in water level each year for the next 5 years will be -0.4 feet. "

This statement prima-facie appears to be true because rate of decrease stated in the statement is 0.4 ft /year for next 5 years .

D )

"The overall change in water level for the next 5 years is equal to 5(0.4)"

this statement is true

as change in one year = .4

change in 5 years = 5 x .4

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2 years ago

Work out the third term of the sequence with nth term 3(n+2).​

Work out the third term of the sequence with nth term 3(n+2).