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3 years ago

Someone help and I’ll help you thanks guys! Hopefully someone remembers these

Mathematics

1 answer:

dolphi86 [110]3 years ago

7 0

Answer:

4. 8,302

5. 2,033,504

6. 6.5

7. 1013.849

Step-by-step explanation:

4. eight thousand = 8000 (three zeros) + three hundred = 300 (2 zeros) + two = 2.

8000+300+2=8302

5. two million: 2,000,000 (6 zeros) + thirthy-three thousand = 33,000 (3 zeros because thousand), + 500 + 4 =

2,000,000+33,000+500+4=1,033,504

6. six = 6 + five tenths = 0.5 (the first decimal place is a tenth)

6+0.5 = 6.5

7. one thousand=1000 + thirteen = 13 + eight hundred forty-nine thousands = 0.849. The third decimal places is called the thousands place so the last number of the given number (849) is put in the thousands place.

1000+13+0.849 = 1013.849

Hope this helped!

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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

IgorLugansk [536]

Answer:

10.35 miles in 1 hout

Step-by-step explanation:

I'm Sorry if this wrong.

5 0

3 years ago

Consider the graph below if point p partitions ab in the ratio 1:1, what are the coordinates of p

Serjik [45]

Answer:

$P(2, 3.5)$

Step-by-step explanation:

If P partitions AB in the ratio 1:1, it means AP = ½ of AB, and PB = ½ of AB.

Therefore, P can be said to be a midpoint between A and B.

To find the coordinates of P, use the midpoint formula:

Midpoint (P) of AB, for A(3, 5) and B(1, 2) is given as:

$M(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2})$

Let $A(3, 5) = (x_1, y_1)$

$B(1, 2) = (x_2, y_2)$

Plug the values into the formula:

$P(\frac{3 + 1}{2}, \frac{5 + 2}{2})$

$P(\frac{4}{2}, \frac{7}{2})$

$P(2, 3.5)$

8 0

3 years ago

Vertex:____________________________

Pani-rosa [81]

Answer:

The axis of symmetry of a parabola is a vertical line that divides the parabola into two congruent halves. ... The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a .

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3 years ago

A library has 300 feet of shelves for books. The library will increase the

Daniel [21]

Answer: 54

Step-by-step explanation:

Well, divide 300 by 100, which gets you 3. So 3 feet of book shelves = 1%

So 3x18=54

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2 years ago