Mathematics High School

Suppose you pay $3.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 1 or a 6, nothing otherwise. What is your expected value?

A. $5.00

B. –$1.33

C. $3.00

D. –$3.00

Answers

Answer 1

Answer:

I would say D

Step-by-step explanation:

I say D because there is only a 2/6 chance of getting the 5 bucks so it's more likely to get no money back and lose the 3 bucks

Related Questions

If my initial angle is 30 degrees, what is the negative coterminal angle?​

Answers

Answer:

Step-by-step explanation:

Coterminal angles are angles in standard position (angles with the initial side on the positive x -axis) that have a common terminal side. For example 30° , −330° and 390° are all coterminal.

Answer:

-330°

Step-by-step explanation:

Coterminal angles have a difference of 360° or multiples of 360°.

Negative coterminal angle with 30° is:

30° - 360° = -330°

Which mapping diagram represents a function ? Would it be D?

Answers

Answer:

D

Step-by-step explanation:

Mathematically , for us to have a function, no 2 y values must have a single x value

Although, 2 x-values can have a single y value

The y values called the output values are listed on the right

The x values called the input values are listed on the left

So out of the options, with the given definition above, the one that represents a function is the option D

1.
Calculate 7% of 340​

Answers

Answer:

23.8

Step-by-step explanation:

x/340= 7%/100%

340*7= 2380

2380/100 =23.8

Answer:

7

___ x 340 = 23.8

100

Using the keywords:

Of means multiplication

Consider a percent out of 100

A way to remember is that, cent means 100.

Brainliest appreciated!

what is the approximate circumference of a plate with a diameter of 12 inches? use 3.14 for π. Round to the nearest hundredth if necessary. (I really need this it's a test)​

Answers

Answer:

37.7

Step-by-step explanation:

C=πd=π·12≈37.69911

rounded to the nearest hundredth 37.7.

hoped this helped.

Please help me find the circumference.

Answers

Answer:

15pi

Step-by-step explanation:

The equation for circumference is C=2πr

In the question you're given the diameter so we need to take 15 and divide by 2

giving us r=7.5

then 7.5*2=15

giving us 15pi

Vincent is giving cakes to some children at a carnival. He has 2 strawberry cakes, 6 pineapple cakes, and 7 chocolate cakes. If Vincent selects a cake randomly without looking, what is the probability that he will give a pineapple cake to the first child and then a strawberry cake to the second child?

Answers

Hope this helps you with your question.

find the distance between the points (-2, -10) and (3, -2)

Answers

Hope this helps I used Matheus

URGENT pleaseee help 10 points and brainlist if right!!!!
Use the Sohcahtoa method!!

Answers

Answer: x is 36 degrees

Step-by-step explanation:

To solve this triangle, we can use sin -1 x = 14 / 24. This gives us 35.69 degrees, but in your answer choices you only get integers. We can round this up to 36 degrees to get the answer.

Answer:

36°

Step-by-step explanation:

sinx=14/24

x=[tex]sin^{-1} (\frac{14}{24})[/tex]

x=35.68533471° or 36°

Determine which quadrant each pair of coordinates will be in.
3
(-8, -7
(8,7)
(8, -7)
(-8,7)

Answers

(-8,-7) is in 3
(8,7) is in 1
(8,-7) is in 4
(-8,7) is in 2

:-)

Answer:

(-8, -7) in 3rd Quadrant

Step-by-step explanation:

(-8, -7) in 3rd Quadrant

(8,7) in 1st Quadrant

(8, -7) in 4th Quadrant

(-8, 7) in 2nd Quadrant

Thus, (-8, -7) in 3rd Quadrant

-TheUnknownScientist

Help me it’s due in 20 minutes!!

Answers

do NOT open the link that this person is about to send, he sent the same link to me and i realized it’s a virus. but i suck at math so i can’t complete this, so good luck!

Which of the following relations is a function?
A. (0,4), (-3, 2), (5, 1), (-7, 2)
B. (0,0), (-3, 3), (5, 1), (-3, 5)
C. (5, 1), (-3, 4), (0, 1), (5,2)
D. (0,4), (-3, 6), (0, 3), (-7, 2)

Answers

Answer:

c is the one with function

if f(x) = 1/5 x^2 – 3x, what is the value of f(5)? please help​

Answers

Answer:

0, -10

Step-by-step explanation:

hey HELP PLEASE BRAINLIEST

Answers

He would have to multiply 2x12x2.54 (so that would be the third answer)

The orange highlighted answer is right bc in order to get the number of centimeters in a foot youd multiply the 2.54*12 and then multiply that by 2 to get number of centimeters in two feet

hope it helps :)

HELP PLEASE ⚠️⚠️⚠️⚠️⚠️⚠️⚠️❗❗❗❗❓❓❓
Why does it matter that we protect African Wild Dogs?

Answers

Answer:

HOPE it helps

One of Africa's most efficient predators, wild dogs may help regulate prey species that in turn play a role in shaping vegetation communities. Securing a future for wild dogs, therefore, is an essential part in stemming the loss of biodiversity and preserving a healthy ecosystem.

Answer:

wild dogs may help regulate prey species that in turn play a role in shaping vegetation communities. Securing a future for wild dogs, therefore, is an essential part in stemming the loss of biodiversity and preserving a healthy ecosystem.

Step-by-step explanation:

Solve the following set of equations by Cramer's Rule
3x + 2y = 12
x + 5y = 17​

Answers

Answer:

please check the pdf the solution for your answer is in it. hope it helps :)

Step-by-step explanation:

Shoppers leaving Midtown Mall were asked to give their age. Use the line plot to answer each question. This question is for 40 points and ill also mark brainliest

Answers

Answer:

20, 7, 5

Step-by-step explanation:

Range-20, range=most

Mode-7, mode=22-15

Most-5

The front view of the top of a house is in the shape of a triangle whose
height is 10 inches less than the length of its base and its area is 75 in2. If b
represents the length of the base, which of the following equations can be
used to find the value of b?

Answers

Answer:

uiptyftyfkghfcytfghvchjcghcfgcjvbcfg

Step-by-step explanation:

Answer:

2nd option

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the height )

Here A = 75, b = b , h = b - 10, then

[tex]\frac{1}{2}[/tex] b(b - 10) = 75 ( multiply both sides by 2 to clear the fraction )

b(b - h) = 150 ← option 2

If 7 apples cost 0.11 each, what is the total cost?​

Answers

it would cost .77 cents because 7 times .11 =.77

PLEASE ANSWER!!! I WILL GIVR U BRAINLIEST!!

Answers

Answer:

k = 5

Step-by-step explanation:

The standard form of an equation representing proportionality is

y = kx ← k is the constant of proportionality

y = 5x ← is in standard form

with k = 5

Answer: 5 is the constant proportionality

A rectangle has an area of (x3 + 5x2 + 5x – 2) square meters and a width of (x + 2) meters. Find its length.


(x2 + 3x – 1) meters

(x2 + 3x + 1) meters

(x2 + 5x – 4) meters

(x2 + 7x – 9) meters

Answers

Answer:b

Step-by-step explanation:

math will be the death of me

Please help me i cant figure it out im stuck
what goes in the question mark box?

Answers

Answer:

y = 4x - 31

Step-by-step explanation:

Parallel slope (m) = 4

(5, -11)

y - y1 = m(x - x1)

y + 11 = 4(x - 5)

y + 11 = 4x - 20

y = 4x - 31

Teresa needs to memorise words on a vocabulary list for French class. She has 12 words to memorise and she is 1/4 done how many words has Teresa and memorise so far?​

Answers

Answer: 3

Step-by-step explanation: 12 times 1/4 = 3

Answer:

3 words

Explanation:

12×1/4 = 12/4 = 3

Rebecca decides to give all employees in her company a raise on their daily wage. She allows each employee to
choose between two options.
• Option 1: $10 added to the daily wage.
• Option 2: 10% increase on the daily wage.
Enter a whole number daily wage amount for which Option 1 is a larger raise. Enter your response in the first
response box.
Enter a whole number daily wage amount for which Option 2 is a larger raise. Enter your response in the second
response box.

Answers

For option 1 enter any number less than 100. For option 2 enter any number greater than 100

Mr levels gave 5 tests the test scores were 200,225,215,199 and 225, what is the mean median and mode of the tests that mr levels gave?

Answers

Answer:

median is 215

mode is 225

mean is 212.8

Step-by-step explanation:

Im pretty sure

REAL ANSWERS ONLY!!! 20 POINTS

Answers

Answer:

113°

Step-by-step explanation:

Angle formed by two chords = 1/2(sum of intercepted arcs)

m∠NSR = 1/2(176° + 50°) m∠NSR  = 113°

Answer my question and I’ll give you points, stars, and brainlest

Put the # of the question and than answer it.

Answers

3) y = mx + b (m is the slope and b is the y-intercept)
so y = -2x + 3

The cast of the school play, Annie Jr., has 16 girls and 12 boys. If this ratio remains the same for the whole school, how many students at Liberty Middle School are girls it there are
1,120 total students?

Answers

640 girls and 480 boys

Plz give brainliest

Answer: 640 girls

Step-by-step explanation:

the total play has 28 students

the amount of girls is 4/7 total

multiply the fraction 4/7 by 1,120

the answer is 640 girls

hii please help asap ill give brainliest thanks

Answers

Answer:nirvana

Step-by-step explanation:

Sheila buys 33kg of rice, 9kg of cornmeal and a certain amount of flour at the supermarket. The amount of flour bought is a third of the amount of rice bought. How much flour was bought? A. 15kg
B. 11kg
C. 18kg
D. 23kg

Answers

B. 11kg
33 divided by 3 = 11

Pretty pwease help are im gonna get hit oml I just wanna gts



Clark deposited $3600 for three years into a money market account. At the end of three years he had earned $432 in interest. What rate of interest did he receive? (See Example 1 from your notes.)

a
3.8%
b
4%
c
4.32%
d
0.04%

Answers

Answer should be C like that other person said. Anyways have a good nights sleep :)
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