Brian flips a fair coin 3 times
What is the probability of him getting exactly 2 tails?​

Answers

Answer 1

Answer:

[tex]\frac{3}{8}[/tex]

Step-by-step explanation:

There are a list of possible outcomes:

TTT  (1)TTH   (2)THT  (3) THH  (4)HHH   (5)HHT  (6)HTH   (7)HTT   (8)

This represents 8 outcomes.

The only ones that have two tails are:

TTH   (1) THT  (2) HTT (3)

Because there are 3, this means that the probability in a fraction form of Brian getting exactly 2 tails is 3/8. P ( exactly 2 tails) = 3/8.


Related Questions

Evaluate -6y - 5 for y = 1/2

Answers

Answer:

15

Step-by-step explanation:

-6y-5

Substitute 1/2 for y.

-6y-5

-6(1/2)-5

-3(-5)

15

The full question.the full question you were asking for ​

Answers

Answer:

I'm getting stuck by

[tex] = lim \: \: \: \: \: \: \frac{ {h}^{ \frac{1}{5} } }{h} \\ h > 0[/tex]

Sorry I can't help you out, if you find the answer through FP lmk

Greg has a piece of rope 18 ft long. He wants to cut it into two pieces so that the longer piece is 2 ft less than 3 times the length of the shorter piece.

How long will each piece of rope be?

Enter your answers in the boxes.

Shorter piece:
ft

Longer piece:
ft

Answers

Answer:

Shorter = 4ft.

Longer = 10ft.

Step-by-step explanation:

Shorter = x

Longer = 3x - 2

Piece of rope = 18

(3x - 2) + x = 18

4x - 2 = 18

4x = 16

x = 4 (shorter piece)

Longer piece

3x - 2

3(4) - 2

12 - 2 = 10

[100 POINTS] What is the measure of the arc from A to B that does not pass through C?

(Fill in the blanks)

Answers

Answer:

the answer to the questions is 140

Central angle

2(40)=80°

So measure of arc BC is 80°

Use inscribed angle theorem

The measure of arc from A to B that doesn't pass through C is

180-mBC180-80100°

All of the following are equivalent, except.

Answers

Answer: B.

Step-by-step explanation: This is because you can't possibly have an exponent, there are no two of the same value being multiplied together.

What are the roots of the equation 9x^2-6x+2=0 in simplest a+bi form?

Answers

Answer:

Step-by-step explanation:

37, 42, 48, 51, 52, 53, 54, 54, 55

Answers

sorry, what’s the question?

Describe the trend in the scatterplot

Answers

Answer:

negative correlation

Step-by-step explanation:

If you were to draw a line of best fit (a line that best expresses the relationship between a group of points), it would have a negative slope.

the attachment below is the question

Answers

Answer: 2

Step-by-step explanation:

We need to find y when x=1, which is 2.

David’s mom recorded the amount of time David spent on homework.

Which measure of central tendency should David’s mom use if she wanted to argue that David did not spend enough time on homework?

Answers

The measure of central tendency that David's mum can use to argue is the mean.

What is the Mean of a Data?

The mean of a data is the average of the data points in the data distribution. The mean is a measure of central tendency.

If David really spent enough time on homework, the average of the time he uses will give David's mum the mean time spent by David, which she can use for her argument.

Thus, David's mum can use the mean as a measure of central tendency.

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Answer:

mode

Step-by-step explanation:

Write the two equations that represent this information

Answers

Answer:

where is the information?

Step-by-step explanation:

5x + 3 - 2x = 5. What is the value of x?

Answers

Answer:

x = 2/3

Step-by-step explanation:

5x + 3 - 2x = 5

3x = 5-3

3x = 2

x = 2/3

give brainliest please!

hope this helps :)

2/3 because if you take all of the numbers on the right and all of the x’s on the left you get 3x = 2. Which is x = 2/4

Q
7/0
The mean weight of 8 girls in a group is 35 kg. The individual weights of seven of then
are 35kg, 28kg, 43kg, 25kg, 33kg, 51kg, and 22kg. Find the weight of the 8th girl.

Answers

The weight of the 8th girl in the class is 43 kg

How to determine the weight of the 8th girl?

The given parameters are:

Mean weight = 35 kg

Weight of 7 girls = 35kg, 28kg, 43kg, 25kg, 33kg, 51kg, and 22kg

Let the weight of the 8th girl be x.

Mean is calculated using:

Mean = Sum/Count

So, we have:

(35+ 28+43+25+33+51+22 + x)/8 = 35

Evaluate the sum

(237 + x)/8 = 35

Multiply both sides by 8

237 + x = 280

Subtract 237 from both sides

x = 43

Hence, the weight of the 8th girl is 43 kg

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Can someone please answer this math?

Answers

The volume of the cylinder will be 621.72m³.

How to calculate the volume?

Thw volume of a cylinder will be:

= πr²h

= 3.14 × 3² × 22

= 621.72 m³

The volume of the cone will be:

= 1/3πr²h

= 1/3 × 3.14 × 2² × 12

= 25.12m³

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1.Mary has ( 20xy - 10x²) sweets. She wants to divide the sweets each friend will get in term s of x and y

a) if X=6 and Y=4, how many sweets:

i) Will she give to each friend?​

Answers

Answer:

X will get 20 sweets and Y will get 30 sweets.

Step-by-step explanation:

Substitute for x and y in in the equation.

20(6)(4) - 10(6)(6)

480-360

=120

Mary has 120 sweets.

Then divide 120 by 6 and 4

120/6= 20 sweets and 120/4 =30 sweets

What is the value of the underline digit?

119.65

Answers

1 1 9 . 6 5
1 is the the hundreds place
1 is the tens place
9 is the ones place
6 is the tenths place
5 is the hundredths place

What is the probability you spin something larger than 10

Answers

The probability you spin something larger than 10 will be 1  /  2.

What is probability?

Probability is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

The given data is:-

There are 8 numbers in the spinner.We need to find the probability of a number greater than 10.

The probability will be calculated as:-

Total numbers = 8

Numbers greater then 10 are = 13 , 16 , 22 , 42 = 4

Probability  =  4  /  8  =  1  /  2

Therefore the probability you spin something larger than 10 will be 1  /  2.

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Probability and Playing Cards
There are 52 total cards in the deck.
There are 13 spades, 13 clubs, 13 diamonds, and 13 hearts.
Each suit has the following cards: Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king.
Suppose you are dealt two cards from the deck. What is the probability of being dealt two aces?

Answers

Answer:

do the calculation below

Step-by-step explanation:

(4/52 ) *(3/51)

leave a comment if you need more help

20 POINTS + BRAINLY Complete the table.




52, 54, 55, 55, 57, 58, 59, 59, 61, 61, 61, 62, 63, 63, 64, 65, 65, 68, 70, 72


Interval Frequency

50-54 2


55-59



60-64



65-69



70-74

Answers

The frequency of the data set that matches with the interval stated are:

50 - 54: 2

55 - 59: 6

60 - 64: 7

65 - 69: 3

70 - 74: 2

What is a Frequency?

Frequency is the number of times a data point or a set of points within an interval appears often in a data set.

The corresponding frequency to each of the interval given for the data would be as follows:

50 - 54: 2

55 - 59: 6

60 - 64: 7

65 - 69: 3

70 - 74: 2

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PLEASE HELP ASAP ILL MAKE YOU THE BRAINIEST
Write the ratio for sin A

Answers

Answer:

Step-by-step explanation:

Formula

The sin(A) =  opposite / hypotenuse

Givens

Opposite = CB = 11

Hypotenuse = AB = 61

Solution

Sin(A) = 11/61

Sin(A) = 0.1803

Answer

Sin(A) = 11/61

Sin(A) = 0.1803

80 Points, please help!
If using the method of completing the square to solve the quadratic equation x^2-11x-14=0, which number would have to be added to "complete the square"?

Answers

Answer:

±√177/2+11/2

Step-by-step explanation:

Use the formula (b/2)^2 in order to create a new term. Solve for x by using this term to complete the square. Exact Form:x=±√177/2+11/2

x=12.15206734…,−1.15206734…

Answer:

30.25

Explanation:

Quadratic Equation: x² - 11x - 14 = 0

Number added = (b/2)² = (-11/2)² = 30.25

Solving Steps:

x² - 11x = 14

[add both sides by 30.25]

x² - 11x + 30.25 = 14 + 30.25

[complete square]

(x - 5.5)² = 44.25

[exchange sides]

(x - 5.5)² - 44.25 = 0

Sam opened a stationery store in his neighborhood. His annual profit grew by $5,000 per year in the first 2 years. Then for 2 years, his annual profit was constant at $10,000 each year. Then his annual profit grew by $10,000 per year for the next 3 years.

Which graph models the piecewise function for the given situation?

Answers

Please find attached the image of the graph that models the function.

What is a graph?

A graph is a pictorial representation of data. A graph is made up of the x-axis and the y-axis.  On this graph, the number of years is on the y-axis and the profit is on the x-axis.

Profit in year 1 = $500 Profit in year 2 = $5000 + $5000 = $10,000Profit in year 3 and 4 = 10,000Profit in year 5 = 10,000 + 10,000 = $20,000Profit in year 6 = 20,000 + 10,000 = $30,000Profit in year 7 = 30,000 + 10,000 = $40,000

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Answer: other dude is correct

Step-by-step explanation:

In LMN, the measure of N=90°, ML = 17, LN = 8, and NM=15. what is the ratio that represents the secant M?

Answers

Answer:

To be clear, do u want the angle of M?

Answer:

secM = [tex]\frac{17}{15}[/tex]

Step-by-step explanation:

secM = [tex]\frac{1}{cosM}[/tex]

cosM = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{MN}{LM}[/tex] = [tex]\frac{15}{17}[/tex] , then

secM = [tex]\frac{1}{\frac{15}{17} }[/tex] = [tex]\frac{17}{15}[/tex]

What is the volume of the right rectangular prism?
15 mm
Î
Area of base = 49 sq. mm
O 64 mm³
3
O 128 mm³
O 735 mm³
O 1,470 mm³

Answers

Answer:

735mm³

Step-by-step explanation:

V=A of base×h

=49×15

=735mm³


The dimensions of a right rectangular prism are 1.5 cm,0.5 cm and 2. 25 cm.
What is the volume of the prism?

Answers

The volume of the triangle will be V=1.6875 cm^3

Tom and Kathy want to borrow $35,000 in order to build an addition to their home. Their bank will lend them the money for 12 years at an interest rate of 5 3/8%. How much will they pay in interest to the bank over the life of the loan?

Answers

Interest of 35000 =
35000* 3.8 / 100 = 1330
3500 / 12 years = 243
Tom and kathy will they pay in mounth through 12 years .
1330 / 12 years = 9.2

Total pay in mounth = 243+ 9.2 = 252.2

find the value of x in 4^2x / 4^x = 64

Answers

Answer:

sorry I don't know

Step-by-step explanation:

sorry

awnser this pls im in a bad mood

Answers

Answer:

I think its 1/6 and if I'm wrong I'm very sorry but I think its 1/6

Step-by-step explanation:

Answer:

it's [tex]7* \frac{1}{6} =\frac{7}{6}[/tex]

Step-by-step explanation:

Yeah same, have a great day I guess i don't know I'm not in the mood

What figure is a dilation of Figure A by a factor of 12?


A quadrilateral labeled figure A. The sides are labeled 2 inches, 4 inches, 1 inch, and 5 inches, clockwise about the figure.




Note that the images are not necessarily drawn to scale.





A.A quadrilateral. The sides are labeled 1 inch, 3 inches, 0.5 inch, and 4 inches, clockwise about the figure.


B.A quadrilateral. The sides are labeled 4 inches, 8 inches, 2 inches, and 10 inches, clockwise about the figure.


C.A quadrilateral. The sides are labeled 3 inches, 5 inches, 2 inches, and 6 inches, clockwise about the figure.


D.A quadrilateral. The sides are labeled 1 inch, 2 inches, 0.5 inch, and 2.5 inches, clockwise about the figure.

Answers

The dilation factor for the question should be 1/2 as per options

So

dilated lengths are

2(1/2)=1in4/2=2in1/2=0.5in5/2=2.5in

Option D

Answer:

D

Step-by-step explanation:

Figure A is dilated by a scale factor of 1/2.

Hence, new dimensions will be :

⇒ 1/2 × 2 = 1 inch

⇒ 1/2 × 4 = 2 inches

⇒ 1/2 × 1 = 0.5 inch

⇒ 1/2 × 5 = 2.5 inches

Option D has the right dimensions

Amelie solves the following system of equations.
Which values of x and y satisfy this system of equations?

Answers

The values of x and y that satisfy this system of equations are 10 and 5 respectively

Simultaneous equation

Given the system of equations

x + y = 20

3x - 3y = 30

_____________________

x + y = 20

x - y = 10

Add the equations

2x = 20 + 10

2x = 30

x = 30/2

x = 15

Substitute

x -y = 10

15 - y = 10

y = 5

Hence the values of x and y that satisfy this system of equations are 10 and 5 respectively

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