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Gennadij [26K]
3 years ago
9

What is the sum of the first 10 terms of the geometric series below?

Mathematics
1 answer:
Verdich [7]3 years ago
3 0
This is what I got:

It was being multiplied by 2.

1,2,4,8,16,32,64,128 (got harder :P)

128*2=256

then

256*2=512.

But, don't be tricked, it asks for the SUM of all 10 terms.

Added together, 1023.

Thus, C, is your answer.
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Answer:

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Step-by-step explanation:

This is the 95% confidence interval for the mean life expectancy of non-hispanic white males.

Our sample size is 100

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

df = 100-1 = 99

Then, we need to subtract one by the confidence level \alpha and divide by 2. So:

\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 99 and 0.025 in the two-sided t-distribution table, we have T = 1.984

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