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Neporo4naja [7]
3 years ago
6

A cd has 5% chance of being a smash hit an profiting $5.2 million a 50% chance of being a modest success and profiting $0.9 mill

ion and a 45% chance of being a flop what is the expected earning value of the cd
Mathematics
1 answer:
Aleksandr [31]3 years ago
3 0

Answer:

710,000

Step-by-step explanation:

P(S) = Probability of Smash = 0.05 (5%)

P(M) = Probability of Modest = 0.5 (50%)

P(F) = Probability of Flop = 0.45 (45%)

Use the discrete random variable model,

E(X) = (0.05 * 5.2) + (0.5 * 0.9) + (0.45 * 0)

= 0.26 + 0.45 + 0 = 710,000

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BabaBlast [244]

Answer: D square root of 16

Step-by-step explanation:

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3 years ago
Please help my teacher never explains anything i need help
Katen [24]

A is the answer.

Since DF=EF, that means angle D and angle E are equal to each other,( Isolcles Triangle Theorem).

Since one of the angle is 90, and the other angles are equal to each other.

90 + x + y = 180

x = y

so

90 + x + x = 180

2x  = 90

x = 45

So the other two missing angles is 45

This makes the triangle a 45-45-90 triangle.

So this means the side DF and EF are

\frac{21 \sqrt{2} }{2}

Because a side that in a 45 45 triangle is

\frac{ \sqrt{2} }{2}

times more than the hypotenuse.

3 0
3 years ago
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What is the equation of the line ( -4,8 ) ( 0,0 )
torisob [31]

Answer:

Step-by-step explanation:

First you need to find the slope of the line that contains those 2 points.

m=\frac{0-8}{0-(-4)}=\frac{-8}{4}=-2

So the slope is -2. Now we can pick one of those points and sub it into the point-slope formula to find the equation:

y - 0 = -2(x - 0) gives us an equation of

y = -2x

8 0
3 years ago
Can someone help me
Sergio039 [100]

Answer:

12. √197

13. √89

14. 2√10

15.  (-3, 2)

16. (3/2, 0)

17. (2, -8)

18. 21

Step-by-step explanation:

12. Point 1: (-8, -2); Point 2: (6, -1)

d = √(x2 - x1)² + (y2 - y1)²

d = √(6 - (-8)² + (-1 - (-2)²

d = √(14)² + (1)²

d = √196 + 1

d = √197

13. Point 1: (-4, 5); Point 2: (4, 0)

d = √(x2 - x1)² + (y2 - y1)²

d = √(4 - (-4))² + (0 - 5)²

d = √(8)² + (-5)²

d= √64 + 25

d = √89

14. G: (-2, -3); H: (0, 3)

d = √(x2 - x1)² + (y2 - y1)²

d = √(0 - (-2))² + (3 - (-3))²

d = √(-2)² + (6)²

d = √4 + 36

d = √40

d = √4 x 10

d = 2√10

15. Point 1: (-1, -5); Point 2: (-5, 9)

Midpoint = ((x1 + x2))/2, ((y1 + y2))/2

Mid = (-1 + (-5)/2, (-5 + 9)/2

Mid = (-6)/2, (4)/2

Mid = (-3, 2)

16. Point 1: (7, -2); Point 2: (-4, 2)

Midpoint = ((x1 + x2))/2, ((y1 + y2))/2

Mid = (7 + (-4)/2, (-2 + 2)/2

Mid = (3)/2, (0)/2

Mid = (3/2, 0)

17. M:(-3, -1); Y:(-8, 6), X: (X, y)

Midpoint = ((x1 + x2))/2, ((y1 + y2))/2

X      = ((-8 + x2))            ,((6 + y2))

                ÷      = -3              ÷           = -1

                2                          2

To get rid of the 2 multiply the 2 by -3 for X and -1 for Y

X = ((-8 + x2))                      ,((6 + y2))

             ÷       = -3(2)                 ÷         = -1(2)

           2(2)                              2(2)

X = (-8 + x2) = -6, (6 + y2) = -2

           +8          +8,   -6             -6

X2 = 2, Y2 = -8

X: (2, -8)

18. QR = 8x - 51; RS = 3x - 6

8x - 51 = 3x - 6

-3x         -3x

5x - 51 = -6

     + 51   +51

5x = 45

÷5    ÷5

x = 9

QR = 8(9) - 51

QR = 72 - 51

QR = 21

RS = 3x - 6

RS = 3(9) - 6

RS = 21

(QR + RS)/2

(21 + 21)/2

42/2 = 21

QS = 21

I really hope this helps!

3 0
2 years ago
The height of the prism is 20 feet. Find the volume of the figure.
grin007 [14]
Volume of the prism is 80
5 0
3 years ago
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