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3 years ago

How many 10-digit numbers can one write using only one “1” and nine “0”?

Mathematics

1 answer:

Damm [24]3 years ago

7 0

I'm guessing 1 because there is only one 1 and multiple 0s

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g If the economy improves, a certain stock stock will have a return of 23.4 percent. If the economy declines, the stock will hav

dusya [7]

Answer:

$E(X) = 23.4* 0.67 -11.9*0.33= 11.759 \%$

Now we can find the second central moment with this formula:

$E(X^2) = \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) = (23.4)^2* 0.67 +(-11.9)^2*0.33= 413.5965$

And the variance is given by:

$Var(X) = E(X^2) - [E(X)]^2$

And replacing we got:

$Var(X) = 413.5965 -(11.759)^2 =275.5105$

And finally the deviation would be:

$Sd(X) = \sqrt{275.5105}= 16.599 \%$

Step-by-step explanation:

We can define the random variable of interest X as the return from a stock and we know the following conditions:

$X_1 = 23.4 , P(X_1) =0.67$ represent the result if the economy improves

$X_2 = -11.9 , P(X_1) =0.33$ represent the result if we have a recession

We want to find the standard deviation for the returns on the stock. We need to begin finding the mean with this formula:

$E(X) = \sum_{i=1}^n X_i P(X_i)$

And replacing the data given we got:

$E(X) = 23.4* 0.67 -11.9*0.33= 11.759 \%$

Now we can find the second central moment with this formula:

$E(X^2) = \sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) = (23.4)^2* 0.67 +(-11.9)^2*0.33= 413.5965$

And the variance is given by:

$Var(X) = E(X^2) - [E(X)]^2$

And replacing we got:

$Var(X) = 413.5965 -(11.759)^2 =275.5105$

And finally the deviation would be:

$Sd(X) = \sqrt{275.5105}= 16.599 \%$

7 0

3 years ago

How many meters in one dekaliter

Ilya [14]

Answer:

there are 10 meters in a dekameter

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The standard form of the equation of a circle is (x−3)^2+(y−1)^2=16.

aivan3 [116]

So the answer is A.......

7 0

4 years ago

Pls don't waste my time cuz I need to submit this later 3 am

Andreas93 [3]

Step-by-step explanation:

A rational function the ratio of two polynomial functions, where the polynomial in the denominator is not equal to zero.

5 0

3 years ago

Someone factor x^2+18x+77

Ipatiy [6.2K]

77 is a multiple of 11, as i'm sure you know--the double numbers like 22 and 55, one of the factors are always 11.

77 is factored down into 11 and 7--which, when you add those, luckily equal 18.

(x + 11)(x + 7) is your factorization.

5 0

4 years ago