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3 years ago

Find the expected value of the winnings

Mathematics

1 answer:

adelina 88 [10]3 years ago

3 0

Multiply each payout by the corresponding probability and take the total:

E[X] = 0×0.5 + 5×0.2 + 8×0.15 + 10×0.1 + 15×0.05 = 3.95

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Can you please tell me the answer I need it

tangare [24]

Answer:

I would be glad to help but i dont see anything

Step-by-step explanation:

6 0

3 years ago

If f(x)=2x^2-x-6 and g(x)=x^2-4 find f(x)/g(x)

DENIUS [597]

$\dfrac{f(x)}{g(x)}=\dfrac{2x^2-x-6}{x^2-4}\\
\dfrac{f(x)}{g(x)}=\dfrac{2x^2-4x+3x-6}{(x-2)(x+2)}\\
\dfrac{f(x)}{g(x)}=\dfrac{2x(x-2)+3(x-2)}{(x-2)(x+2)}\\
\dfrac{f(x)}{g(x)}=\dfrac{(2x+3)(x-2)}{(x-2)(x+2)}\\
\dfrac{f(x)}{g(x)}=\dfrac{2x+3}{x+2}$

6 0

3 years ago

The radius of a circle is 4.9 in. Find the circumference<br> to the nearest tenth.

Archy [21]

Answer:

C = 30.8

Step-by-step explanation:

Circumference of a Circle:

C = 2πr

C = 2(3.14)(4.9)

C = 30.772

C = 30.8

5 0

3 years ago

Read 2 more answers

-2x + y=5 and -5x + y = -4 cooridbnates of the solution to this system of equation

Viktor [21]

Answer:

(3,11)

Step-by-step explanation:

Turn both equations into linear equations:

y=2x+5

y=5x-4

Then, just graph both equations.

Find the point where the two lines intersect. That point of intersection is the solution. That coordinate is (3,11).

8 0

4 years ago

Determine the graph of the polar equation r =6/2-2cos theta.

anzhelika [568]

Answer:

Choice D is correct

Step-by-step explanation:

The first step is to write the polar equation of the conic section in standard form by dividing both the numerator and the denominator by 2;

$r=\frac{3}{1-cos(theta)}$

The eccentricity of this conic section is thus 1, the coefficient of cos θ. Thus, this conic section is a parabola since its eccentricity is 1.

The value of the directrix is determined as;

d = k/e = 3/1 = 3

The denominator of the polar equation of this conic section contains (-cos θ) which implies that this parabola opens towards the right and thus the equation of its directrix is;

x = -3

Thus, the polar equation represents a parabola that opens towards the right with a directrix located at x = -3. Choice D fits this criteria

6 0

3 years ago