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allsm [11]
3 years ago
10

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

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If Hank shoots from inside the three-point line, what can be said about his distance from the center of the basket?
Digiron [165]

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If Hank shoots from inside the three-point line we can say that he has to shoot 246 inches to make the ball into the hoop.

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Adam currently runs about 40 miles per week, and he wants to increase his weekly mileage by 10%. How many miles will Adam run pe
nadya68 [22]

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3. Look at the map. Explain why Elm Street and Birch Street are not perpendicular.
Temka [501]

Answer:

A. The slope of Birch Street is 0. To be perpendicular to Elm, Birch would have to have a slope of negative 4/7.

Step-by-step explanation:

I had this same question on Gradpoint and got it correct.

4 0
3 years ago
The height of a ball thrown vertically upward from a rooftop is modelled by h(t)= -4.8t^2 + 19.9t +55.3 where h (t) is the balls
nikitadnepr [17]

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

<h3>How to determine the maximum height of the ball</h3>

Herein we have a <em>quadratic</em> equation that models the height of a ball in time and the <em>maximum</em> height represents the vertex of the parabola, hence we must use the <em>quadratic</em> formula for the following expression:

- 4.8 · t² + 19.9 · t + (55.3 - h) = 0

The height of the ball is a maximum when the discriminant is equal to zero:

19.9² - 4 · (- 4.8) · (55.3 - h) = 0

396.01 + 19.2 · (55.3 - h) = 0

19.2 · (55.3 - h) = -396.01

55.3 - h = -20.626

h = 55.3 + 20.626

h = 75.926 m

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

To learn more on quadratic equations: brainly.com/question/17177510

#SPJ1

6 0
2 years ago
How do you solve 3.2x0.75
horrorfan [7]
I don't know how to explain but the answer is 2.4. 
5 0
3 years ago
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