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elena-s [515]
3 years ago
15

Please help. Explain please.

Mathematics
2 answers:
Mazyrski [523]3 years ago
5 0
That is asking for the sum of the equation 2n+1

up to 5

2(1) + 1 = 3
2(2) +1 = 5
2(3) +1 = 7
2(4)+1 = 9
2(5)+1 = 11

3+5+7+9+11 = 35

answer is 35
Sunny_sXe [5.5K]3 years ago
4 0
When n = 1, 2(1) + 1 = 3

When n = 2, 2(2) + 1 = 5

When n = 3, 2(3) + 1 = 7

When n = 4, 2(4) + 1 = 9

When n = 5, 2(5) + 1 = 11

Sum = 3 + 5 + 7 + 9 + 11 = 35

----------------------------------------------------
Answer: 35
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Answer:

last year it was 80k

Step-by-step explanation:

Population increases by 5% every year

Last year it was 80,000

PRESENT POPULATION

Present population = 80,000 + 5% off 80,000

                               = 80,000 + 5/100 × 80,000

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AFTER ONE YEAR

After this , the population again increases by 5%

Population = 84,000 + 5% off 84,000

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                 = 84,000 + 5 × 840

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ANSWERS

The population of present year is 84,000

After one year , the population becomes 88,200

Hope it helps :-)

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