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irina1246 [14]
3 years ago
14

What is the sum of the geometric series 20 + 21 + 22 + 23 + 24 + … + 29? 1,023 511 2,407 1,012 NextReset

Mathematics
2 answers:
docker41 [41]3 years ago
6 0
511 is the correct answer

Annette [7]3 years ago
5 0

Answer:

1023

Step-by-step explanation:

2^0+2^1+2^2+2^3+2^4+2^5+2^6+2^7+2^8+2^9

1+2+8+16+32+64+128+256+512=1023

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Fantom [35]
Your answer is b so there you go have a great day!!!!
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3 years ago
9a+b-8c-2(a+3b-c) simplified
alekssr [168]

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The correct simplified answer for 9a + b - 8c - 2 (a + 3b - c) would be 7a - 5b - 6c

Step-by-step explanation:

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7 times what equals 17?
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4 0
2 years ago
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The city of Anvil is currently home to 21000 people, and the population has been growing at a continuous rate of 4% per year. Th
Yanka [14]

Answer:

They'll reach the same population in approximately 113.24 years.

Step-by-step explanation:

Since both population grows at an exponential rate, then their population over the years can be found as:

\text{population}(t) = \text{population}(0)*(1 + \frac{r}{100})^t

For the city of Anvil:

\text{population anvil}(t) = 21000*(1.04)^t

For the city of Brinker:

\text{population brinker}(t) = 7000*(1.05)^t

We need to find the value of "t" that satisfies:

\text{population brinker}(t) = \text{population anvil}(t)\\21000*(1.04)^t = 7000*(1.05)^t\\ln[21000*(1.04)^t] = ln[7000*(1.05)^t]\\ln(21000) + t*ln(1.04) = ln(7000) + t*ln(1.05)\\9.952 + t*0.039 = 8.8536 + t*0.0487\\t*0.0487 - t*0.039 = 9.952 - 8.8536\\t*0.0097 = 1.0984\\t = \frac{1.0984}{0.0097}\\t = 113.24

They'll reach the same population in approximately 113.24 years.

4 0
3 years ago
What is 63/99 in simplest form?
melisa1 [442]
Divide by 9=7/11. Hope this help you
7 0
3 years ago
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