All categories

3 years ago

How do you do this question?

Mathematics

1 answer:

Sveta_85 [38]3 years ago

5 0

Answer:

-$0.16

Step-by-step explanation:

The expected value is the sum of the outcomes multiplied by their probabilities.

E(X) = 1/38 (+68) + 37/38 (-2)

E(X) = -0.16

You might be interested in

The circular radio signal from transmitter A has three times the radius of the circular signal from transmitter B. How many time

Shalnov [3]

Answer:

How many times greater in the area of the signal from transmitter

3 0

2 years ago

3. A farm has 40m of fence. What is the maximum area he can

Nataliya [291]

Answer:

160m squared

Step-by-step explanation:

3 0

2 years ago

Which questions are appropriate statistical questions for a survey about a book that was read in Language Arts class?

qwelly [4]

A. D. I think would be most suitable

8 0

3 years ago

Read 2 more answers

A company's stock was selling at

Dmitry_Shevchenko [17]

Answer:

30%.

Step-by-step explanation:

Divide the increase by the original price x 100%.

26-20/20, then do 6/20. 6/20 is also equivalent to 30/100 so the percentage would also be 30%.

Hope that helps. x

4 0

2 years ago

Read 2 more answers

Find the Inverse Function : Algebra 2 y = 2x² + 1

Vera_Pavlovna [14]

$\displaystyle\\Answer:\ y=\sqrt{\frac{x-1}{2} } \ \ \ \ (x\geq 1,\ \ \ \ y\geq 0)$

Step-by-step explanation:

$y=2x^2+1\\$

We change the argument and the value:

$\displaystyle\\x=2y^2+1\\\\x-1=2y^2+1-1\\\\x-1=2y^2\\$

Divide both parts of the equation by 2:

$\displaystyle\\\frac{x-1}{2}=y^2\\\\ \sqrt{\frac{x-1}{2} }=y \ -\ the\ desired\ inverse\ function\\\\$

The restrictions are imposed on the inverse function by on x:

$x-1\geq 0\\x\geq 1$

The restrictions are imposed on the inverse function by on y:

$y\geq 0$

Then the original function is defined on the sets:

$x\geq 1,\ \ \ \ y\geq 0$

The initial function, a parabola, is constrained because of the inverse function; only in this case the functions are reciprocal.

3 0

1 year ago