Consider a game in which you flip a coin. If it comes up heads, you earn 1 point; if it comes up tails, you earn 0 points. What is the expected value of one coin flip? A. –1 B. 0 C. 0.5 D. 1

Answers

Answer 1

Answer:

C. 0.5

Step-by-step explanation:

Since a coin has 2 sides and there is the same probability of getting either side, then each side has a 50% or 0.5 probability. Therefore, in order to calculate the expected value of one coin flip we need to multiply the value of each side by its probability and add those values together like so...

1 * 0.5 = 0.5

0 * 0.5 = 0

Now we add these values together...

0.5 + 0 = 0.5

Finally, we can see that the expected value of one coin flip is 0.5


Related Questions

I need help to figure out the slope and y intercept of
3x + y = -2

Answers

Answer:

The slope is -3 and the y intercept is -2

Step-by-step explanation:

3x + y = -2

Solve for y

Subtract 3x from each side

3x-3x + y =-3x -2

y = -3x-2

This is in slope intercept form

y = mx+b  where m is the slope and b is the y intercept

The slope is -3 and the y intercept is -2

Answer:

slope is up 3 over 1, and y int is y =3x + 2

Step-by-step explanation:

y = 3x + 2

HELP HELP ILL GIVE U KISS

Answers

Answer:

I believe your correct! :)

Need help with school

Answers

Answer:

I dont under stand is this in high school or college lol

Suppose that a population parameter is 0.7 and many samples are taken from the population. If the size of each sample is 50, what is the standard error of the distribution of sample proportions? O A. 0.005 OB. 0.089 O C. 0.065 O D. 0.109​

Answers

Answer:

0.065 / C

Step-by-step explanation:

the square root of the population parameter times 1 - the population paramater, in this case 1 times 0.3 divided by the sample size

[tex]\sqrt{0.7(1-0.7)/50}[/tex] =0.065 aka C

please help!! 20 points . if you guess or just comment random things to take points i will have you reported and make sure your acc gets banned, thanks! i want explanations pls

Answers

Answer:

The first figure is (9, 6, 6)

The second one looks like

10 - 6 = 4

9 x 6 = 54

70 - 54 = 16

The other figure most = 16

4 x 4 = 16

I think the answer is 4. Forgive me if i'm wrong.

HELPPPPPP. In a class activity, students collected data on the average number of pepperoni slices on various sizes of pizzas. A "New York" style pizza has a diameter of 18 inches. Use the least-squares regression line to predict the average number of pepperoni slices that the students could expect to on a "New York" style pizza. Pepperoni = - 0.156 Diameter
a.) 49 pepperoni slices
b.) 7 pepperoni slices
c.) 60 pepperoni slices
d.) 2 pepperoni slices

Answers

Answer:

49 slices

Step-by-step explanation:

.

Answer:

A) 49 slices

Step-by-step explanation:

please answer fast and correct

Answers

Answer:

1 no answer is 20

i think it is blue colour

Step-by-step explanation:

Answer:

1) 2,000,000cm ÷ 1000 = 2000m ÷ 1000 = 2Km

2)Blue

A trebuchet launches a projectile from a hilltop 30 feet above ground level on a parabolic arc at a velocity of 40 feet per second. The equation h=−16t2+40t+30
models the projectile's h height at t seconds. How long will it take for the projectile to hit its target on the ground (to the nearest tenth of a second)?


2.8 seconds


3.1 seconds


3.5 seconds


3.9 seconds

Answers

3.5 seconds!



hope this helps you out, and i’m sorry if i’m wrong!

let f(x) = 1/x-3 and g(x) = the square root of x+5. What is the domain of (f o g) (x) ​

Answers

Answer:

the second one

Step-by-step explanation:

Option B is correct. the required domain of the function will be expressed as [-5, 3) U (3, ∞)

The domain of a function is the input function for which a function exists.

Given the functions

f(x) = 1/x-3

g(x) = √x+5

Get the composite function (f o g) (x) ​

(f o g) (x) ​= f(g(x))

f(g(x)) = f( √x+5)

[tex]f(g(x)) =\frac{1}{\sqrt{x+5}-3 }[/tex]

According to the function gotten, we can see that the domain of the fucntion will exist for all values of x except at x = 4. The function tends to infinity at x = 4. Hence the required domain of the function will be expressed as [-5, 3) U (3, ∞)

Learn more here: https://brainly.com/question/10564333

I HAVE 10 MIN PLS HELP FIND THE VOLUME

Answers

Answer:

900

Step-by-step explanation:

The figure is a triangular prism

The equation would be V = A * H / 3

V being the volume

A being the area of the pyramids base

H being the height front he base to the top  (20)

Base area is 135 (A)

135 * 20 = 2700

2700 divided by 3 = 900

900 is your answer

please help with question

Answers

Answer:

Step-by-step explanation:

Property of the perpendicular lines,

If the two lines [tex]L_1[/tex] and [tex]L_2[/tex] having slopes [tex]m_1[/tex] and [tex]m_2[/tex] are perpendicular to each other,

Then [tex]m_1\times m_2=-1[/tex]

Equation of line [tex]L_1[/tex] → y = 3x + 5 ------(1)

Equation of line [tex]L_2[/tex] → 6y + 2x = 1 ------- (2)

Slope of line [tex]L_1[/tex],

[tex]m_1=3[/tex]

Slope of line [tex]L_2[/tex],

6y + 2x = 1

6y = -2x + 1

[tex]y=-\frac{2}{6}x+\frac{1}{6}[/tex]

[tex]y=-\frac{1}{3}x+\frac{1}{6}[/tex]

Therefore, [tex]m_2=-\frac{1}{3}[/tex]

By using the property of perpendicular lines,

[tex]m_1\times m_2=3\times (-\frac{1}{3} )[/tex]

              [tex]=-1[/tex]

Therefore, both the lines are perpendicular.

DETERMINE WHICH OF THE ANGLE MEASURES BELOW CORRECTLY
SATISFY THE MISSING VALUE, X, IN EACH DIAGRAM.

Answers

73 does because and look down below

What is the length of the dotted line in the diagram below? Round to the nearest tenth.

Answers

Answer:

length of dotted diagonal line = 11

Step-by-step explanation:

Using the Pythagorean theorem:

length of rectangle² = 9² + 6² = 81 + 36 = 117

length of rectangle = √117 = 10.82

length of diagonal² = 2² + 10.82² = 4 + 117 = 121

length of diagonal = 11

A dolphin swam 712 miles in 38 hour. What was its average speed in miles per hour (mph)?

Answers

To find miles per hour you divide the number of miles by the number of hours

(7 1/2)/(3/8) = (15/2)(8/3) = 20 mph


if y = 0.5x + 5

and y = 30,

what will x=

Answers

x=35

Step-by-step explanation:

y=30

y=0.5x+5

you would take 30÷0.5=60

0.5x60+5

30+5=35

x=35

I think this is right, don't come at me if it's not lol

What is the slope of the equation: y = -3x + 7

Answers

Step-by-step explanation:

tan‐¹ –3 I guess

Correct me if I am wrong

Answer:

-3

Step-by-step explanation:

in y=mx+b, m is the slope. There for -3 is the slope.  

Dylan wants to invest $3500 for 5 years. The bank offers him 4%/a compounded weekly. Calculate the final amount of this investment. In TVM solver we are solving for? (Where do we put the blue dot?

Answers

Answer:

the final amount value is $4,274.58

Step-by-step explanation:

Given that

Present value = $3,500

Time period = 5 × 52 = 260

Rate of interest = 4% ÷ 52 = 0.0769%

We need to determine the final amount i.e. future value

So as we know that

Future value = Present value × (1 + rate of interest)^time period

= $3,500 × (1 + 0.0769%)^260

= $4,274.58

Hence, the final amount value is $4,274.58

Can some one help me answer all ten questions they are due at 10:00 I will give out brainly. Part 2

Answers

Answer:

solve for x

4x-6=26

4x=26+6

x=32/4

x=8

area of rectangle=l*b

=26*14

=364

area of triangle=b*h/2

=18.4*20.4/2

=375.36/2

=187.68 m^2

for another side of a triangle

(18.4)^2+(20.4)^2=c^2

338.56+416.16=c^2

[tex]\sqrt{754.72}[/tex]=c

27.47=c

27.5=c

now, perimeter of triangle=a+b+c

=27.5+18.4+20.4

=66.3 m^2

radius=diameter/2

=26/2

=13 ft

diameter=26 ft

circumference=2πr

=2*3.14*13

=81.64

Area of a circle=π[tex]r^{2}[/tex]

=3.14*(13)^2

=3.14*169

=530.66 ft^2

Step-by-step explanation:


A line passes through points (2,5) and (5, 14). What is the slope of this line?

Answers

We know that:

Slope of a line = change in y coordinate / change in x coordinate

We are given:

First point = (2,5)

Second point = (5, 14)

Calculating the change in y coordinate:

change in y (also represented by Δy) = second y - first y

Δy = 14 - 5

Δy = 9

Calculating the change in x coordinate:

Δx = second x - first x

Δx = 5 - 2

Δx = 3

Slope of the line:

Slope = (Δy) / (Δx)

Slope = 9 / 3                                              [replacing the values]

Slope = 3

Given: I is the midpoint of ME and SL
which prosulate can be used to prove the triangles congruent?
SSS
SAS
AAS
ASA
HL
None​

Answers

Answer:

SAS

Step-by-step explanation:

Given: I is the midpoint of ME and SL

which prosulate can be used to prove the triangles congruent?

The solution is, SAS prosulate can be used to prove the triangles congruent.

What is triangle?

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted \triangle ABC. In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane.

here, we have,

given that,

I is the midpoint of ME and SL

so, we get,

MI = IE

and, SI = IL

now, we know that,

the opposite angles are equal to each other.

so, we have,

angle MIS = angle LIE

so, for triangle MSI & LIE

We get,

MI = IE

SI = IL

angle MIS = angle LIE

so, we get,

both the triangles congruent by SAS.

Hence, The solution is, SAS prosulate can be used to prove the triangles congruent.

To learn more on triangle click:

brainly.com/question/29126067

#SPJ2

Please help with this geometry problem. I need it ASAP. Show work

Answers

SOLUTION

Given that:

Edge of the square pyramid = 14 unit Slant height of the square pyramid = 25 unit

To Find:

The height of the square pyramid.

We know that:

In pythagoras theorem.

H² = P² + B²

Where,

H = Hypotenuse = 25 unitP = Height = Let xB = Base = 14/2 = 7 unit

Finding the height of the square pyramid:

⇒ H² = P² + B²

⇒ (25)² = x² + (7)²

⇒ 625 = x² + 49

⇒ x² = 625 - 49

⇒ x² = 576

⇒ x = √576

⇒ x = 24

Hence,

The height of the square pyramid is 24 unit

The table shows the total weight of
different numbers of pencils.
Number Weight
of Pencils (grams)
3
21
5
35
8
56
12
84
Based on the information in the table,
what is the weight in grams per pencil?
A 28
B 4
C7
D 196

Answers

each pencil weighs 4 grams so the answer is B: 4

Of the marbles in a bag, 3 are red, 4 are blue, and 4 are green. Sandra will randomly choose one
marble from the bag. Fill in the blanks in parts a and b.

Answers

Answer:

The probability that Sandra will choose a red marble from the bag is 3 out of 11, or 3/11.

Step-by-step explanation:

uh. I don't understand this at all

Answers

Answer: BCD

Step-by-step explanation:

A is incorrect since there is no angle Y to exist

Hope this helps

The diameter of a circle is 24 miles. What is the circle's area?
d=24 mi
Use 3.14 for n.
square miles
Submit

Answers

Answer:

24÷2=12

3.14×12×12=452.16

Answer is 452.16

Answer:

The circle's area above is 452.39 I believe.

Step-by-step explanation:

Use A = pie*r^2 and d = 2 * r to solve this problem.

A = 1/4*pie*d^2 = 1/4*pie*24^2 = 452.38

Round and you have the area of the circle: 452.39

The circumference of a circle is 53.38 centimeters.
What is the area in square centimeters? Use 3.14 for a.

Answers

The area would be 226.75

Is this a polygon or trapezoid?

Answers

Answer: No

The reason why is because this is actually a pentagon since it has 5 sides. A trapezoid must have 4 sides (making it a quadrilateral), and exactly one pair of opposite sides are parallel. The other pair of opposite sides are not parallel.

Answer:

polygon

Step-by-step explanation:

A polygon describes any shape, a trapazoid describes a specific shape with 2 parallel sides and 2 non-parallel sides (like the image below)

as we see your image does not look like the image below, so it would just be a normal old polygon

hope this helps!

The net of a triangular pyramid is composed of one triangle and three rectangles. True False

Answers

Answer:

True

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

Someone help me with this pleaseeee!!!! I need help ASAP pleasee!!!

Answers

It’s 65.41 rounded to the nearest hundredth

Paul, Colin and Brain are waiters. One night the restaurant earns tips totalling £78.40. They share the tips in the ratio 2:1:5. How much more roes Brian get over Colin?

Answers

Answer:

Step-by-step explanation:2+1+5=8

78.40/8=9.80

B=5x9.80=49

C=1x9.80=9.80

So B-C=39.20 more

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