Five girls and two boys are standing in a line randomly. What is the probability that two boys are next to each other?

Answers

Answer 1
Answer: The fraction 2/7

========================================================

Explanation:

Let's say the teacher pulls the two boys out of the line, and stands in their place. So we have 5 girls and 1 teacher making 6 people total.

There are 6! = 6*5*4*3*2*1 = 720 different permutations here. Order matters. This involves the teacher, so let's have him/her step out of the line and have the two boys replace the teacher's position. This guarantees the boys stick together. For any permutation, we have 2 different ways to arrange the boys. So we have 2*720 = 1440 different ways to arrange the students so that the two boys are next to each other.

This is out of 7! = 7*6*5*4*3*2*1 = 5040 different permutations overall (we're arranging 5 girls+2 boys = 7 people).

The probability we're after is going to be 1440/5040 = 2/7

--------

Or you could see it like this

1440 = 2*6!

5040 = 7! = 7*6!

So,

1440/5040 = (2*6!)/(7*6!)

1440/5040 = 2/7


Related Questions

There are 20%, percent more goblins than wizards in magic club. There are 120 goblins in magic club.
How many wizards are in the magic club?

Answers

Answer:

100

Step-by-step explanation:

Here is your answer

Let the number of wizards is x

20% more gobins than wizards.

ATQ

Hence Numbers of wizards are 100 in a magic club.

Answer:

480

Step-by-step explanation:

120 ------ \(\frac{20}{100}\)

x ----------\(\frac{100}{100}\)  

x·\(\frac{20}{100} = 120\frac{100}{100}\)

x= \(\frac{120}{0,2}\)

x=600

600- 120= 480 wizards in the club

Insert commas and write the following number in the Standard form, word form, and the expanded form. 236506043

PLEASE ANSWER!

Answers

Answer:

Indian Standard Form= 23,65,06,043

Word Form: Twenty three crores sixty five lakhs six thousand forty three.

expanded form= 20,00,00,000+3,00,00,000+60,00,000+5,00,000+6,000+40+3

International Standard Form=236,506,043

Word Form: Two hundred thirty six millions five hundred six thousand forty three

expanded form:200,000,000+30,000,000+6,000,000+500,000+6,000+40+3

Step-by-step explanation:

Hope it helps

Please help with this pls

Please help with this pls

Answers

Answer:

Step-by-step explanation:

its c

I rent a gym for $150 for 30 students. Another time I rent the gym for $350 for 70 students. What is my rate per student?

Answers

Answer:

The rate is 5 dollars per student.

Step-by-step explanation:

The rate per student can be found with \(\frac{dollars}{student}\):

\(\frac{150dollars}{30student}=5\frac{dollars}{student}\\\\\frac{350dollars}{70student}=5\frac{dollars}{student}\)

The rate is 5 dollars per student.

HELP PLEASEEEEE WILL GIVE 60 POINTS AND MARK U BRAINLY

HELP PLEASEEEEE WILL GIVE 60 POINTS AND MARK U BRAINLY

Answers

Answer:

0.125

Step-by-step explanation:

beacuse you would turn the mixed number into a improper fraction and then subtract or turn them into decimals which would be 0.125

Answer:

1/8 is the answer  

Decimal Form:

0.125

Step-by-step explanation: Convert the mixed numbers to improper fractions, then find the LCD and combine.

Arectangular field has an area of 646 square feet. The width of the field is 19 feetWite a number in the box to show the missing measurement What is the length of the field?

Arectangular field has an area of 646 square feet. The width of the field is 19 feetWite a number in

Answers

The area of a rectangle is

\(A=19\cdot x=76\)

x is the number missing in the box

\(x=\frac{76}{19}=4\)

the length of the field is 30+4 =34 feet

11 players are going to practice in the batting cage. how many different orders are possible

Answers

Answer:

Step-by-step explanation:

Which of these could be the value of x in the triangle below

Which of these could be the value of x in the triangle below

Answers

Answer:

5

Step-by-step explanation:

In the same circle or in congruent circles:
13
Chapter Reference
In the plane, if a line is perpendicular to a circle's radius at its outer endpoint, then the
line is ... to that circle
You have 1 attempt left to earn the full credit for this problem.
Answer: In the plane, if a line is perpendicular to a radius at its outer endpoint, then the line is Diames
to the circle
Diameter
GRADE ANSWER INCORRECT
Parallel
Secant
Symmetric matting?
Tangent

In the same circle or in congruent circles:13Chapter ReferenceIn the plane, if a line is perpendicular

Answers

Tangent is the answer

Answer:

tangent

Step-by-step explanation:

Hope this helps

6 * 10x^{-3}/8*10x^{-6}

Answers

The simplified form of the given expression, 6 × 10⁻³ / 8 × 10⁻⁶, is 3/4  × 10³

Simplifying an expression

From the question, we are to simplify the given expression

The given expression is

6 × 10⁻³ / 8 × 10⁻⁶

Simplifying the expression

6 × 10⁻³ / 8 × 10⁻⁶

This can be written as

6/8 × 10⁻³/10⁻⁶

Reduce the fraction

3/4  × 10⁻³/10⁻⁶

Apply the division law of indices

3/4  × 10⁻³ ⁻ ⁽⁻⁶⁾

3/4  × 10⁻³ ⁺ ⁶

3/4  × 10³

Hence, the value is 3/4  × 10³

Learn more on Simplifying an expression here: https://brainly.com/question/723406

#SPJ1

What is the scale factor of figure B to figure A?



Scale factor =_________


(40 points)

What is the scale factor of figure B to figure A?Scale factor =_________(40 points)

Answers

The scale factor of figure B to figure A is 1/2.

How to find the scale factor?

To find the scale factor of figure B to figure A, we need to determine how much the corresponding sides of the two figures have been multiplied or divided by.

Looking at the figures, we can see that the corresponding sides of figure B are half the length of the corresponding sides of figure A. For example, the length of side AB in figure A is twice the length of side AB' in figure B, and the length of side BC in figure A is twice the length of side B'C' in figure B.

Since the corresponding sides of figure B are half the length of the corresponding sides of figure A, the scale factor of figure B to figure A is 1:2 or 1/2.

Therefore, the scale factor of figure B to figure A is 1/2.

To know more about scale factor visit:

https://brainly.com/question/30215119

#SPj1

The radius of a circle is 17 meters. What is the circle's circumference?

Answers

Answer:\(34\pi\)

Step-by-step explanation:

c=\(2\pi R=2*17\pi =34\pi\)

Answer:

43.98 meters

Step-by-step explanation:

If two angles are vertical, the sum of their measures is equal to the measure of a right angle true or false?

Answers

Step-by-step explanation:

False,

Vertical angles isn't always complementary l

Answer:

true

Step-by-step explanation:

If two angles are congruent, their measures are equal.

Between what values of X is there a slight decrease?

Between what values of X is there a slight decrease?

Answers

24 and 30 - you can see that the curve somewhat droops down.

Henry bought a phone priced $45.75, but the
total purchase, including sales tax, was $50.33.
Find the percent of tax he paid.

Answers

Answer:

10% sales tax

Step-by-step explanation:

Given the following question:

Percent increase from 45.75 to 50.33

To find the answer we use the formula to calculate percent change.

\(\frac{n-o}{o} \times100\)
\(\frac{50.33-45.75}{45.75} \times100=50.33-45.75=4.58\div45.75=0.10010929\times100=10.010929\)
\(10.010929\)
\(0<5\)
10%

The tax of the phone was "10% sales tax."

Hope this helps.

Select the inequality that matches the statement below:



more than 22

A. y < 22

B. y ≤ 22

C. y > 22

D. y ≥ 22

Answers

Answer:

C

Step-by-step explanation:

16/17 rounded to the nearest hundredth

Answers

Answer:

0.941

Step-by-step explanation:

Maria bought 5 tickets for $20 each. Each ticket had a $2 fee. Write an expression that shows how much Maria paid for the tickets.

Answers

(20+2)•5=110 she paid $110 for 5 tickets
2(5x20) should be the answer

There are 32 different colored pencils in a box. What is the probability that the orange pencil and then the green pencil will be chosen at random, without replacement? Enter a fraction or round your answer to 4 decimal places, if necessary

Answers

Answer:

Here we find the probability of both the pencils ..

Probability of orange pencil = 1/32

probability of green pencil without replacement of orange pencil = 1/31

So,total probability of both orange and green pencil =

\( \frac{1}{32} \times \frac{1}{31} \)

\( \frac{1}{992} \)

P = 0.0010

mark me as brainliest ❤️

A carnival worker has 380 stuffed animals she buys 6 more boxes with 5 stuffed animals in each box how many stuffed animals does she have now

Answers

410 stuffed animals now

62.8 in scientific notation

Answers

Answer:

6.28 x 10²

Step-by-step explanation:

first number must be greater than or equal to 1 and less than 10

if you move the decimal to the left you need to increase the power of ten by one for each move

if you move the decimal to the rightt you need to decrease the power of ten by one for each move

What is the answer of this triangle congruence question.

What is the answer of this triangle congruence question.

Answers

The value of x in the triangles are 9.

What is a quadratic equation?

For variable x : ax² + bx + c = 0, where a≠0 is a standard quadratic equation, which is a second-order polynomial equation in a single variable. It has at least one solution since it is a second-order polynomial equation, which is guaranteed by the algebraic basic theorem.

Given:

The triangles are congruent.

That means, their corresponding angles are also congruent.

In ΔJKL,

the sum of all the angles of the triangle is 180°.

So,

x²-2x + x + 29 + 3x + 52 = 180

x² + 2x - 99 = 0

Solving the quadratic equation,

x² +11x - 9x - 99 = 0.

x (x + 11) -9 (x + 11) = 0

x = 9 and x = -11

Here, we take x = 9.

Therefore, the value of x is 9.

To learn more about the quadratic equation;

https://brainly.com/question/17177510

#SPJ1

The fuel economies in miles per gallon (mpg) for nine vehicles are listed below. If one more vehicle is added to the list with a rate of 40 mpg, how will this affect the mean and median?

A. The mean and median will both increase.
B. The mean will increase and the median will decrease.
C. The mean will increase and the median will not change.
D. The mean will decrease and the median will not change.

The fuel economies in miles per gallon (mpg) for nine vehicles are listed below. If one more vehicle

Answers

Option C. The way that the change would affect the mean and the median is that The mean will increase and the median will not change.

How to solve for the mean and the median

We will find the mean and the median before the 40 was added and after it was added

Before it was added

Mean = 16 + 18 + 20 + 24 + 24 + 24 + 24 + 31 + 32 / 9

= 213 / 9

= 23.67

The median is 24

After we have added 40 the mean would be

16 + 18 + 20 + 24 + 24 + 24 + 24 + 31 + 32 + 40 / 10

= 253 / 10

= 25.3

The median would be 24 + 24 / 2

= 48 / 2

= 24

Hence we can see that the mean got to be higher while the median still remained as 24.

The solution is C.

Read more on mean and median here:

https://brainly.com/question/14532771

#SPJ1

. A box contains four red, three yellow, and seven green balls. Three balls are randomly selected from the box without replacement. (a) What is the probability that all three balls are the same colo

Answers

Answer:

10/91

Step-by-step explanation:

Number of Red balls = 4

Number of Yellow balls = 3

Number of green balls=7

Total=4+3+7=14

If we pick three balls of the same color, there are three possibilities: (All Red, All Green Or all Yellow).

Therefore:

The probability that all three balls are the same color (note that the selections are without replacement)

=P(RRR)+P(GGG)+P(YYY)

\(=(\frac{4}{14} \times \frac{3}{13} \times \frac{2}{12})+(\frac{3}{14} \times \frac{2}{13} \times \frac{1}{12})+(\frac{7}{14} \times \frac{6}{13} \times \frac{5}{12})\\\\=\frac{1}{91} + \frac{1}{364}+ \frac{5}{52}\\\\=\frac{10}{91}\)

The probability that all three balls are the same color is 10/91.

In trapezoid PQRS, the lengths marked
are in feet. What is the area of the
trapezoid in square feet?
S
5
3
P 10
F.
44
G. 50
H. 62.5
J. 88
K. 100 dion
12
Q
R

In trapezoid PQRS, the lengths markedare in feet. What is the area of thetrapezoid in square feet?S53P

Answers

The areas of the trapezoid is 50 units².

How to find the area of a trapezoid?

The trapezoid PQRS have bases 10 and 12 units respectively. The height of the trapezoid is unknown. Let's find the area of the trapezoid as follows:

area of trapezoid = 1 / 2 (a + b)h

where

a and b are the basesh = height of the trapezoid

Therefore,

a = 10 units

b = 15 units

Using Pythagoras's theorem,

5² - 3² = h²

h = √25 - 9

h = √16

h = 4 units

area of trapezoid = 1 / 2 (10 + 15)4

area of trapezoid = 1 / 2 × 25 × 4

area of trapezoid = 100 / 2

area of trapezoid = 50 units²

learn more on trapezium here: https://brainly.com/question/30547776

#SPJ1

Two lines intersect, and you know the measure of one angle. How can you determine the measures of the other three angles

Answers

Answer:

Opposite angles are the same measure.

Angles around a point = 360°

When you add all the angles, you get 360.

Angle a and b would measure the same and so would angle d and c. So you double the measure for one of those angles and subtract it from 360.

Then, you half that value( divide by 2) and this is to find the measure of the other angle

Two lines intersect, and you know the measure of one angle. How can you determine the measures of the
The answer is angle around the point =360

Marco wants to know how much the other students in his mathematics class study. He recorded the data he collected in
the following table.
Time spent studying per week (in hours)
2.0
5.0
1.0
2.5
2.5
3.5
0.0
4.5
2.5
4.0
3.5
3.0
2.0
1.5
4.0
2.0
0.5
3.0
1.0
3.0
3.5
1.5

1. Construct a histogram for the data.

Marco wants to know how much the other students in his mathematics class study. He recorded the data

Answers

Answer:

Step-by-step explanation:

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.

Calculate 1 + 3 + 5 +...+ (2n - 1) for several natural numbers n.

Answers

Answer:

The solutions for 1 + 3 + 5 +...+ (2n - 1), for the first 10 natural numbers are given in the explanation section below.

Step-by-step explanation:

To calculate 1 + 3 + 5 +...+ (2n - 1) for several natural numbers n, we will use several natural numbers to represent n.

For n= 1,

2n - 1 = 2(1) - 1 = 2 - 1 = 1

Hence, 1 = 1

For n = 2,

2n - 1 = 2(2) - 1 = 4 - 1 = 3

Hence, 1 + 3 = 4

For n = 3,

2n - 1 = 2(3) - 1 = 6 - 1 = 5

Hence, 1 + 3 + 5 = 9

For n = 4,

2n - 1 = 2(4) - 1 = 8 - 1 = 7

Hence, 1 + 3 + 5 + 7 = 16

For n = 5,

2n - 1 = 2(5) - 1 = 10 - 1 = 9

Hence, 1 + 3 + 5 + 7 + 9 = 25

For n = 6,

2n - 1 = 2(6) - 1 = 12 - 1 = 11

Hence, 1 + 3 + 5 + 7 + 9 + 11 = 36

For n = 7,

2n - 1 = 2(7) - 1 = 14 - 1 = 13

Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 = 49

For n = 8,  

2n - 1 = 2(8) - 1 = 16 - 1 = 15

Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = 64

For n = 9,

2n - 1 = 2(9) - 1 = 18 - 1 = 17

Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 = 81

For n = 10,

2n - 1 = 2(10) - 1 = 20 - 1 = 19

Hence, 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = 100

Point A is located in which quadrant? On a coordinate plane, point A is at (negative 3, 5). Quadrant I Quadrant II Quadrant III Quadrant IV

Answers

Point a is located in Quadrant 1

Answer:

quadrant 2

Step-by-step explanation:

Chad has $31,000 in a savings account. The interest rate is 13
% per year and is not compounded. How much will he have in 4
years?

Answers

Answer:

1 year interest: $31000 + $4030

2 year interest: $35030 + $4553.9

3 year interest: $39583.9 + $5145.4

4 year interest: $44729.3

Final Interest: $47120

Step-by-step explanation:

I hope this helps! have a nice day!

Other Questions
What is the speed of a wave with a frequency of 560 Hz and a wavelength of 50 m? Evaluate the function f(x) = 6x + 9 at the given values of the independent variable and simplify.a. f(-2)=b. f(x + 7)=c. f(-x)=PLEASEE HELP ASAP I'LL MARK BRAINLIEST someone explain how to do this pleaseA: square root of 96B: square root of 48 C:square root of 16D:8 which equation can be used to determine the length of DE Question 10 of 10In an argumentative research essay, what is one role that reasons play?A. Reasons introduce the central claim the essay will attempt toprove.B. Reasons defend the claim from people who might disagree with it.C. Reasons identify what the opposition's point of view is.OD. Reasons give readers a final thought to take from the essay. Describe and correct the error made in finding the intercepts of the graph of the equation. Which of the following is FALSE regarding Type III cells Group of answer choices Contain voltage-gated calcium channels Contain synaptic vesicles Detect sour Detect tastants with the same pathway used in bitter cells You roll a 6-sided die. What is P(not even)? Write your answer as a fraction or whole number. T/FA company has issued $5 million worth of bonds at 10 percent interest for 20 years. The economy has changed and now bonds of the same quality only pay 7 percent. If the bonds were convertible, the company could reissue the bonds at the lower rate and save money on interest payouts. What is the rational zero test used to find rational zeros? Which of the following foods is a high-protein snack that can replace a snack that contains animal proteins?a. 1 ounce of baby carrotsb. 8 ounce glass of soy milkc. 6 whole-wheat crackersd. cup of watermelon chunks If the Moon were 1 mile from Earth, how far from the Earth would Mars be? If the Moon were 1 mile from Earth, how far from the Earth would Mars be? 100 miles 1.8 miles 1300 miles 10 miles three students (a, b, and c) are asked to determine the volume of a sample of ethanol. each student measures the volume three times with a graduated cylinder. the results in milliliters are: a (87.1 , 88.2, 87.6); b (86.9, 87.1 , 87.2); c (87.6, 87.8, 87.9). the true volume is 87.0 ml. which student has the best precision? A college student borrows $1000 for 3 months to pay for a semester of school. If the interest is $20.63, find the monthly payment. (Round to the nearest cent) Who heads the Legislative Branch? a. Supreme Court b. Congress c. President of the United States The applications of vectors in engineering 1 theme from the novel number the stars which of the following statement is not correct. A) Estimated values based on the discounted abrormal earings method will be affected by accounting Chokes because accounting choices affect either earing B) According to the CAPM models higher beta stock have a reater Cost of equity, and lower beta stock have a lower cost of equity. c) valuation Con be used as a very effective business tool by mangevent for better decision making throughout the life of the enterprise. D) The equity value to book ratio is a function of a) future return on quity, b) future book value of equity growth rates, and c) the cost of equity. help me please Ill really appreciate it if you do At the beginning of 1995, General Motor's pension funds were underfunded by $9.3 billion. Even though the company injected $10.4 billion during the year, at the end of 1995 the pension funds were still underfunded. Knowing that interest rates dropped during 1995, explain what must have happened. Explain how GM could have hedged its risk using (i) an immunization strategy and (ii) interest rate swaps.