Alice and Bob took a test, which has ten questions. Given that Alice answered six questions correctly and Bob answered eight questions correctly, compute the probability that there exists at least one question on the test which is answered correctly by Alice but not by Bob.

Answers

Answer 1

Answer:

0.12

Step-by-step explanation:

Total number of questions in the book = 10

Number of questions answered correctly by Alice = 6

Number of questions answered correctly by Bob = 8

Probability of Alice answering a question correctly = 0.6

Probability of Alice answering a question incorrectly = 1- 0.6 = 0.4

Probability of Bob answering a question correctly = 0.8

Probability of Bob answering a question incorrectly = 1- 0.8 = 0.2

Probability that there exists at least one question on the test which is answered correctly by Alice but not by Bob = 0.6 *0.2 = 0.12


Related Questions

Billy has 80 dollars to go shopping. He sees a video game for 60 dollars. What percent of his money
would he be spending?
Help ASAP

Answers

Answer:75%

Step-by-step explanation:

Answer:

100/$80 = 1.25

1.25 x $60 = 75%

Billy would have spent 75% of his money

Step-by-step explanation:

100/$80 = 1.25

1.25 x $60 = 75%

Billy would have spent 75% of his money

A triangle has sides with lengths of 10 centimeters, 23 centimeters, and 26 centimeters. Is it
a right triangle?

A triangle has sides with lengths of 10 centimeters, 23 centimeters, and 26 centimeters. Is ita right

Answers

Answer: No it is not a right triangle. It is an obtuse scalene triangle.

Answer:

No, it is not a right triangle. It is an obtuse triangle.

Step-by-step explanation:

How to know a right traingle

A right triangle is a triangle in which one of the angles is a 90∘ angle. The "square" at the vertex of the angle indicates that it is 90 degrees. A triangle can be determined to be a right triangle if the side lengths are known. If the lengths satisfy the Pythagorean Theorem (a2+b2=c2) then it is a right triangle.

solve the inquality 1/2*<10

solve the inquality 1/2*&lt;10

Answers

Answer:

\(\boxed{x<20}\)

Step-by-step explanation:

\(\frac{1}{2} x<10\)

Multiply both sides by 2.

\(x<20\)

The correct answer for the inquality is x<20

Is the square root of 85 a rational number

Answers


Since 85 is not a perfect square, it is an irrational number. This means that the answer to "the square root of 85?" will have an infinite number of decimals.

A water bill is $139.92. If the bill is paid late, then there is a 5% fee. How much is the late fee for the bill? *


help please

Answers

Answer:

The late fee would be about $7

Step-by-step explanation:

Divide

\(139.92/100 = 1.3992\)

Multiply by 5

\(1.3992*5=6.996\)

$7

What is (2n - 1) × 11

Answers

Answer:

22n - 11

Step-by-step explanation:

A large game cube with a three inch side length is wrapped with shrink wrap. How many square centimeters of shrink wrap will be used to wrap ten game cubes?

Answers

Answer:

see below

Step-by-step explanation:

cube has 6 square faces so 6*s*s

s =3 in =3*2.54 cm = 7.62 cm

1 in = 2.54 cm

1 cube needs 6*7.62² = 348.3864 cm²

10 cubes = 10*348.3864 =3483.864 cm²

One side of a rectangle is twelve feet longer than three times another side of the rectangle . Find the sides we also know that the area of the rectangle is 231f * t ^ 2

Answers

Answer:

Length: 33 ft

Width or side: 7 ft

Step-by-step explanation:

Check the attachment.

One side of a rectangle is twelve feet longer than three times another side of the rectangle . Find the

I will mark you brainiest!

One of the sides of a pentagon has length 12. Which of the following points, when paired with (2, 3), will make a side equal to this length?

A) (14, 15)
B) (2, -9)
C) (-2, -3)
D). (-9, 2)

Answers

The correct option for the given sum is option B. The point (2,-9) paired with (2, 3), will make a side equal to this length.

Let the other point of the pentagon will be M(n, o).

The given point be A (a, b)

Also given one of the sides of a pentagon has length 12.

Now, we need to find the distance between the two points,

Distance between two points: |AM| = √\((a-n)^2+(b-o)^2\)

Now,

\(12 = \sqrt{(2-n)^2+(3-o)^2}\)

\((12)^2\) = \((2-n)^2+(3-o)^2\)

\((2-n)^2+(3-o)^2\) = 144 ----------------------------- eq (1)

Now, check every point for the values to match with equation (1)

Option A: \((2-14)^2+(3-15)^2\) = 288. So the option is false.

Option B:

\((2-2)^2+(3-(-9))^2\) =114

0+114 =114

Therefore option B is correct. The other point is (2,-9).

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Find the Secant <H

see photo for answer instructions​

Find the Secant &lt;Hsee photo for answer instructions

Answers

Answer:

for angle H ,

hypotenuse = gh( √77)

adjacent side= ih( √35)

perpendicular=gi( √42)

then

we know

secant=hypotenuse /adjacent

=√77/√35

At Kamari's Sweet Treats, cookies are packaged in boxes of 8. Depending on the cookie flavor, the most a box can cost is $16.
Let x represent how much each cookie costs. Which inequality describes the problem.

a x / 8 < 16

b 8 + x ≥ 16

c 8 x ≤ 16


d x − 8 ≤ 16

Answers

The inequality that describes the problem is C. 8x ≤ 16

Which inequality describes the problem?

Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal. Inequalities implies that the expressions are not equal. They are denoted by the symbols ≥ < > ≤.

Since Kamari's Sweet Treats, cookies are packaged in boxes of 8 and the most a box can cost is $16. This will be:

8x ≤ 16

The correct option is C.

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Find the equation of the line
Y= x+
Use exact numbers

Find the equation of the line Y= x+ Use exact numbers

Answers

Answer:

y=-1/4x-6

Step-by-step explanation:

The problem wants the form y=mx+b where m is the slope and b is the y-intercept.

The y-intercept in this case is -6 (where the line intercepts the y-axis).

We can use points (0,-6) and (4,-7) to calculate the slope. We just divide the difference in y-values by the difference in x-values.

-6-(-7)/0-4=-6+7/-4=1/-4=-1/4

So the equation of the line is y=-1/4x-6


Select all the points that are on the graph of the line 2x+8y= 16,
a.
(0,2)
b. (0,4)
C. (1,2)
d. (1,4)
e. (4,1)
f. (8,0)

Answers

Answer:

Step-by-step explanation:

a, e, f

This is a question from my sibling's math class.
3(2 + 5) - 5(3) + 8 =?

I want to show her more proof online xD

Answers

Answer:

14

Step-by-step explanation:

You can solve using PEMDAS:

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

3(2+5)-5(3)+8=?

3(7)-5(3)+8=?

No exponents

3(7)-5(3)+8=?

21-15+8=?

No division

21-15+8=?

21-7=?

21-7=14

3(2+5)-5(3)+8=14

Answer:

\(3(2+5) - 5(3) + 8\\3(7) - 15 + 8\\21 - 15 + 8\\6 + 8\\14\)

Step-by-step explanation:

The reason PEMDAS is in the order it is, is because we need to simplify all the operations into addition before combining everything. Think about it, mulitplication is just another way to add large quantities of things quickly, same with exponents.

In order to pass your final assessment you must answer 75% of the questions correctly.There are 84 questions then I must get how many questions correct to pass

Answers

Answer:

63 answers

Hope this helps :p

The total number of questions to be answered correctly so that 75% of answers are correct is 63.

∵ To pass the assessment, the percentage of questions to be answered correctly = 75.

That means, for every 100 questions, the number of correct answers required = 75

∴ For 1 question, the number of correct answers required= 75/100

                                                                                         =3/4

But, the total number of questions in the assessment = 84

∴ For 84 questions, the number of correct answers required = 3/4×84

                                                                                                     = 63

Hence, the total number of questions to be answered correctly so that 75% of answers are correct is 63.

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5
Convert 1101 two to base 5​

Answers

the answer is 23...........

5Convert 1101 two to base 5

Work out V144 - (16 -5 2)2
I

Work out V144 - (16 -5 2)2I

Answers

Answer:

  -24

Step-by-step explanation:

\(\sqrt{144}-(16-5\times 2)^2=\sqrt{144}-(16-10)^2=\sqrt{144}-6^2\\\\=12-36=\boxed{-24}\)

Your calculator can be helpful for this.

-4x + y = 5. Solve for y
A. y = -4x + 5
B.y = 4x + 5
C. y = 4x - 5
D. y = -4x - 5

Answers

Answer:

y = 4x + 5

Step-by-step explanation:

-4x + y = 5

-4x + 4x + y = 5 + 4x

y = 5 + 4x

Hope this helps! :)

18. What is the equation of the line
that passes through the point (-2, 7)
and has a slope of zero?
F X= 7
Gy=-2
H x = -2
) y = 7

Answers

Answer:

y=7

Step-by-step explanation:

there is no slope, so all we have is the y-intercept.

A cube-shaped box has a volume
of 125 cubic centimeters. If the box
is packed full of cubes with edge
lengths of 1 centimeter, how many
cubes can fit along one side of the
box?

A cube-shaped box has a volumeof 125 cubic centimeters. If the boxis packed full of cubes with edgelengths

Answers

Answer:

B.5

Step-by-step explanation:

Pls help Darnell is an election officer. On election day, he travels to the polling place, which is 4.4 miles away from his home. On a map of Harrison County, these two places are 8 inches apart. What is the scale of the map? Write your answer in simplest form using whole numbers.

Answers

Answer:

The scale of the map is 1 : 34848

---------------------------------

Real distance is 4.4 miles and on the map it is 8 inches.

The scale is:

8 in : 4.4 miles =                                  Divide both sides by 81 in : 0.55 miles

or

1 in : 0.55 * 63360 in =                       Convert 1 mile = 63360 inches1 : 34848

(-x^2 -2) + (2x^2 + -1)

Answers

Answer:36

Step-by-step explanation:

x2 - 10x + 25 = 0 2x2 - 2x - 5 = 0 x2 - 16x = 36. This problem has been solved!

Find the unit rate. Round to the nearest hundredth, if necessary.

$5.99 for 12 lb

Answers

(Around) 50 cents. If you round 5.99 to 6.00 and divide by 12, you get 50. But if you want more of an exact answer, it’s 0.4991666667 (and if you round, you get 0.50 either way)

-3x^2+33=48x complete the square

Answers

The complete square form of - 3x² + 33 = 48x is [x + 8]² = 75

Completing the square:

To do this, we add and subtract a constant term to the quadratic expression to make it a perfect square.

In this case, we use the formula x² + 2bx + b² = (x + b)² to rewrite the quadratic expression as a perfect square trinomial, and then we solved for the variable by isolating the squared term and taking the square root.

Here we have

- 3x² + 33 = 48x

Keep 'x' terms on one side and constant terms sides on another side

=> - 3x² - 48x = - 33

Divide by - 3 on both sides

=> -3(x² + 4x)/3 = - 33/3  

=> x² + 16x = 11      

Take half of the 'x' term and square it and add on both sides

=> x² + 2(8x) (x) + (8)² = 11 + (8)²  

Which is in the form of x² + 2bx + b² = (x + b)²

=> [x + 8]² = 75

Therefore,

The complete square form of - 3x² + 33 = 48x is [x + 8]² = 75

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Uri paid a landscaping company to mow his lawn. The company charged $74 for the service plus
5% tax. After tax, Uri also included a 10% tip with his payment. How much did he pay in all?

Answers

Uri paid a total of $85.47 for the landscaping service including tax and tip.

What is tax?

Taxes are compulsory payments made by a government organisation, whether local, regional, or federal, to people or businesses. Tax revenues are used to fund a variety of government initiatives, such as Social Security and Medicare as well as public infrastructure and services like roads and schools. Taxes are borne by whoever bears the cost of the tax in economics, whether this is the entity being taxed, such as a business, or the final users of the items produced by the firm. Taxes should be taken into consideration from an accounting standpoint, including payroll taxes, federal and state income taxes, and sales taxes.

Given that company charged $74 for the service plus 5% tax.

The tax is 5%, that is:

Tax = 5% of $74 = 0.05 x $74 = $3.70

Cost after tax = $74 + $3.70 = $77.70

Now, tip is 10%:

Tip = 10% of $77.70 = 0.10 x $77.70 = $7.77

Total cost = $77.70 + $7.77 = $85.47

Hence, Uri paid a total of $85.47 for the landscaping service including tax and tip.

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The length of a rectangle is four less than twice its width. If the perimeter of the rectangle is 76 units, what is its width?

a
13
b
14
c
20
d
26
e
28

Answers

B. 13 I’m not sure tho

Use the data set below to answer the following questions. 20 26 28 25 28 18 23 15 17 26 29 24 29 29 17 15 17 20 30 29 16 21 22 28 19
Approximately what percent of the data are greater than 28?
Approximately what percent of the data are less than 23?
Approximately what percent of data are greater than 17.5?
Approximately what percent of data are between 17.5 and 28?

Answers

Approximately 37.5% of the data are greater than 28, 33.3% of the data are less than 23, 91.7% of the data are greater than 17.5, and 62.5% of the data are between 17.5 and 28.

To answer the questions, we can analyze the given data set.

First, let's count the number of data points that satisfy each condition:

Greater than 28:

There are 9 data points greater than 28 (29, 29, 29, 30, 29, 29, 28, 28, 28).

Less than 23:

There are 8 data points less than 23 (20, 18, 15, 17, 17, 15, 17, 19).

Greater than 17.5:

There are 22 data points greater than 17.5.

Between 17.5 and 28:

There are 15 data points between 17.5 and 28.

Now, let's calculate the approximate percentage for each condition:

Percent greater than 28:

The total number of data points is 24. Approximately, 9 out of 24 data points are greater than 28.

Percentage =\((9 / 24) \times 100 = 37.5\)%.

Percent less than 23:

Approximately, 8 out of 24 data points are less than 23.

Percentage = \((8 / 24) \times 100 = 33.3\)%.

Percent greater than 17.5:

Approximately, 22 out of 24 data points are greater than 17.5.

Percentage = \((22 / 24) \times 100 = 91.7\)%.

Percent between 17.5 and 28:

Approximately, 15 out of 24 data points are between 17.5 and 28.

Percentage = \((15 / 24) \times 100 = 62.5\)%.

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what does 5 over 100 =

Answers

You can identify that "5 over 100" can be written as a fraction. 5 will be the numerator and 100 will be the denominator:

\(\frac{5}{100}\)

To reduce this fraction, you need to divide the numerator and the denominator by the Greatest Common Factor (GCF) between them.

In this case, to find the GCF, you need to:

- Decompose the number into their Prime Factors:

\(\begin{gathered} 5=5 \\ 100=2\cdot2\cdot5\cdot5=2^2\cdot5^2 \end{gathered}\)

- Notice that 5 is a common factor. Then, you need to choose the one with the lowest exponent:

\(GCF=5\)

Therefore, by dividing the numerator and the denominator by 5, you get:

\(=\frac{1}{20}\)

Hence, the answer is:

\(=\frac{1}{20}\)

Which of the following statement(s) is (are) true?
I. The set of all second-degree polynomials with the standard operations is a vector space. II. The set of all first-degree polynomial functions 'mx' with the standard operations is a vector space. III. The set of second quadrant vectors with the standard operations is a vector space A) 1 B) II and III C) II and III D) 11

Answers

The true statement is; II. Option D

How to determine the correct statements

From the information given, we have that;

I. The set of all second-degree polynomials with the standard operations is a vector space

II. The set of all first-degree polynomial functions 'mx' with the standard operations is a vector space

III. The set of second quadrant vectors with the standard operations is a vector space

Note that;

All second- degree polynomials has no vector spaceAlso, all first - degree polynomials has a vector space

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Consider the triangle below.
M
(15x + 5)º
--
(3x + 2)
(5x - 11)
N
Determine the measure of angle P.
Р
mZP
degrees

Answers

The measure of angle P is 29 degrees

The sum of an interior angle of a triangle is 180 degrees. Given the following parameters:

m<M = 15x + 5m<N = 3x + 2m<P = 5x - 11

Taking the sum and equating to 180 degrees:

m<M + m<N + m<P = 180 degrees

15x + 5 + 3x + 2 + 5x - 11 = 180

23x - 4 = 180

23x = 184

x = 184/23

x = 8

Get the measure of m<P

m<P = 5x - 11

m<P = 5(8) - 11

m<P = 40 - 11

m<P = 29 degrees

Hence the measure of angle P is 29 degrees

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