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2 years ago

21 is 75% fo what number?

Mathematics

2 answers:

const2013 [10]2 years ago

5 0

I believe the answer should be 28.

earnstyle [38]2 years ago

3 0

Answer:

Step-by-step explanation:

21 multiplied by 100 divide by 75 gives you 28.

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Help find the value of x

Nookie1986 [14]

Answer:

x = 82

Step-by-step explanation:

The bottom angle is the same as the angle next to x + 6

A straight angle is 180 degrees.

You add the given angles: (x + 6) + (x + 10) = 2x + 16

180 = 2x + 16

- 16 -16

164 = 2x

x = 82

8 0

2 years ago

URGENT 20 points describe the graph of the function g(x) =(-0.8 X) is related to the graph of the parent function. *

MAXImum [283]

Answer: G(x) is compressed horizontally and reflected over the y-axis

Step-by-step explanation:simple

8 0

2 years ago

2(3x+1)≤20 and 4(x−1)<2.

JulsSmile [24]

Answer:

this Answer is

Step-by-step explanation:

2(3x+1) ≤ 20

6x+1≤20

6x≤19

x≤19/6

4(x−1)<2

4x-1<2

4x< 3

x< 3/ 4

8 0

1 year ago

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

2 years ago

Which of the following sets are not well-defined?

Julli [10]

Set of all counting number

3 0

2 years ago