Which of these numbers is divisible by 9? 8,303 10,925 1,805 7,695

2 answers:

8 0

The last option (7,695) is the only option that is perfectly divisible from 9.

All the others options divided by 9 would leave you with an imperfect number with decimal points. However, when you divide 9 from 7,695, you get a perfect whole number.

7,695/9= 855

Hope this helps! :D

Anna35 [415]3 years ago

7 0

<span>I think 7,695 is the answer </span>

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The half-life of carbon-14 is 5,730 years. Assuming you start with 100% of carbon-14, what is the expression for the percent, P(

vodomira [7]

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3 years ago

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kicyunya [14]

Answer:

The standard deviation of given probability distribution is 0.767.

Step-by-step explanation:

We are given the following information in the question:

X: 0 1 2 3 4

P(x): 0.4521 0.3970 0.1307 0.0191 0.0010

Formula:

$\text{Mean} = \sum X.P(x)\\= 0(0.4521) + 1(0.3970) + 2(0.1307) + 3(0.0191) + 4(0.0010)\\= 0.7197$

$\mu = 0.7197$

Formula:

$\text{Variance} = \sum (X-\mu)^2E(x)\\= (0-0.7197)^2(0.4521)+(1-0.7197)^2(0.3970)+(2-0.7197)^2(0.1307)+(3-0.7197)^2(0.0191)+(4-0.7197)^2(0.0010) \\=0.587$