In order to conduct an experiment 5 subjects are randomly selected from a group of 40 subjects how many different groups of 5 subjects are possible

Answers

Answer 1

Answer:

This can be done using the choose function.

The number of combinations are given by:

(

n

k

)

=

n

!

k

!

(

n

k

)

!

where

n

is the total number of students and

k

is the number of students to be picked. So we have

n

=

20

and

k

=

5

:

(

20

5

)

=

20

!

5

!

(

20

5

)

!

=

20

!

5

!

15

!

Evaluate directly with a calculator:

20

!

5

!

15

!

=

15504

we can simplify this before calculation by hand:

20

!

5

!

15

!

=

20

×

19

×

...

×

2

×

1

5

×

4

×

3

×

2

×

1

×

(

15

×

...

×

1

)

=

(

20

×

...

×

16

)

(

15

×

...

×

1

)

(

5

×

...

×

1

)

(

15

×

...

×

1

)

=

(

20

×

...

×

16

)

15

×

...

×

1

(

5

×

...

×

1

)

15

×

...

×

1

=

(

20

×

19

×

18

×

17

×

16

)

(

5

×

4

×

3

×

2

×

1

)

Simplify the numbers matched up by color:

=

(

4

×

19

×

9

×

17

×

4

)

(

1

×

1

×

3

×

1

×

1

)

=

(

4

×

19

×

3

×

17

×

4

)

(

1

×

1

×

1

×

1

×

1

)

=

3

×

4

×

4

×

17

×

19

=

48

×

323

=

15504


Related Questions

what plus 23 equals 180

Answers

Answer:

157

Step-by-step explanation:

To find this, we just have to reverse the problem and subtract 23 from 180:

[tex]180-23=157[/tex]

So your answer is 157.

Hope this helps! Have a good day! :)

157

Step-by-step explanation:

180-23= 157

The answer is 157

At Central High School, there are 48 football players and 20 cheerleaders. What is the ratio of cheerleaders to football players?

Answers

Answer:

The answer should be 5:12.

Step-by-step explanation:

Since the question asks what's the ratio of cheerleaders to football players, the ratio before simplifying would be 20:48.

So, just find the greatest common divisor of 20 and 48, which would be 4.

20/4 = 5

48/4 = 12

Therefore, the answer to this question and the ratio of cheerleaders to football players is 5:12.

Is it possible to split a jackpot of $2,783,000 equally among 9 winners? Explain your answer.​

Answers

Answer:

No it isnt possible

Step-by-step explanation:

it is not because 2,783,000 is not divisible by 9

solve for x
[tex] \binom{1}{2} ^{3x + 1} = 32[/tex]
how do i solve for x ​

Answers

Answer:

Yes diciembre Eqsakdulien

Help a fella out:)))))))))

Answers

Answer:

See below

Step-by-step explanation:

the x + 4   will shift the graph 4 units LEFT

the - 8 part will shift the graph 8 units DOWN

the town of abridge currently has a population of 300,000 each year the population will reduce by 7% how many fewer people will live in abridge in 5 years compared with now give your answer to 3 sf

Answers

Answer:

91,300 to 3 s.f.

Step-by-step explanation:

The population is reduced by a percentage 100-7 = 93%  ( or 0.93) per year.

So after 5 years thatwould be 300,000(0.93)^5

= 208707

that is 300,000 - 208,706

= 91293

= 91,300 to 3 s.f.


Help please
(it needs more characters so ‍♀️

Answers

Answer:

5.1 is the correct answer

hope it will help you

Plot G(8,-6) , H(2,-6) , J(7,4) , and K(7,10) in a coordinate plane. Are GH and JK congruent?

Answers

Answer:

Yes GH ≅JK

Step-by-step explanation:

The line GH and JK are congruent because they measures are equal.

JK line is vertical so the x-coordinate is constant and the difference in y is 10-4 = 6 and

GH line is horizontal so the y-coordinate is constant and the difference in x is 8-2 = 6

Which letter is the height?

Answers

Answer:

I'm pretty sure y is the height.

what is the value of x?

Answers

Answer:

If you mean the angle at X... 70°

Step-by-step explanation:

Angles on a straight line sum up to 180°115° + Y = 180°Y = 180° - 115° = 65°Angles in a triangle sum up to 180°X + Y + Z = 180°(4k + 5)° + (6k + 10)° + 65° = 180°We turn everything into degrees4k° + 5° + 6k° + 10° + 65° = 180°We then sum up the "like" terms (as in, we put all the k together, and put all the normal numbers together)10k° + 80° = 180°10k° = 180° - 80° = 100°k° = 100° ÷ 10 = 10°At X:6k° + 10° = 6 × 10° + 10° = 60° + 10° = 70°

Select the correct answer from each drop-down menu. Consider functions h and k.
h(t) = 5x^2 - 1
k(u) = √5x+1

For I > 0, the value of h(k(x)) is ____the value of k(h(x))

options-
equal to
not equal to

For I > 0, functions h and k ____ inverse functions

options-
are
are not​

Answers

Answer:

(a) Not equal to

(b) Are not

Step-by-step explanation:

unit 11: volume & surface area homework 8

Answers

The volumes of the pyramids are listed below:

V = 1437.333 cm³V = 75,398 km³V = 59.2 ft³V = 393.3 yd³V = 1134.116 m³V = 403.333 mm³V = 405.6 in³V = 886.808 ft³How to determine the volume of a pyramid

Volume is the space occuppied by an object. In this question we must determine the volumes of pyramids of circular base and polygonal base (V). All the formulas needed are described below:

Volume of the pyramid

V = (π/3) · B · h     (1)

Base of the pyramid - Circle

B = (π/4) · R²     (2)

Base of the pyramid - Regular polygon

B = (n · L²)/(4 · tan 0.5α)     (3)

Base of the pyramid - Right triangle

B = (1/2) · b · z     (4)

Base of the pyramid - Rectangle

B = b · z

Where:

R - Radiusn - Number of sides of the polygon.l - Side lengthα - Internal angle, in degree.h - Height of the pyramidb - Base of the right triangle/rectangle.z - Length of the right triangle/rectangle.

Now we proceed to solve each pyramid:

1) Square, n = 4, α = 90°, L = 14 cm, h = 22 cm

B = 196 cm², V = 1437.333 cm³

2) Circle, R = 3 km, h = 8 km

B ≈ 28.274 km², V = 75,398 km³

3) Right triangle, b = 12 ft, z = 3.7 ft, h = 8 ft

B = 22.2 ft², V = 59.2 ft³

4) Rectangle, b = 23 yd, z = 9 yd, h = 5.7 yd

B = 207 yd², V = 393.3 yd³

5) Circle, R = 9.5 m, h = 12 m

B ≈ 283.529 m², V = 1134.116 m³

6) Regular pentagon, B = 110 mm², h = 11 mm

V = 403.333 mm³

7) Square,n = 4, α = 90°, L = 13 in, h = 7.2 in

B = 169 in², V = 405.6 in³

8) Regular triangle, n = 3, α = 120°, L = 16 ft, h = 24 ft

B ≈ 110.851 ft², V = 886.808 ft³

To learn more on volumes, we kindly invite to check this verified question: https://brainly.com/question/1578538

The graph of a linear equation has a slope of 4 and an x-intercept at (2, 0). What is the y-intercept of the graph?

Answers

Answer:

y-intercept = -8

Step-by-step explanation:

Slope-intercept form of a linear equation: y = mx + b

(where m is the slope and b is the y-intercept)

Given:

slope (m) = 4point (x₁, y₁) = (2, 0)

Substituting the given values into the slope-point form of a linear equation:

[tex]\sf y-y_1=m(x-x_1)[/tex]

[tex]\implies \sf y-0=4(x-2)[/tex]

[tex]\implies \sf y=4x-8[/tex]

Comparing the final equation with the Slope-intercept form of a linear equation, we can see that the y-intercept is -8

You have $300. Your sister has at most $50 less than you. Write an inequality that matches the situation. Give an amount of money your sister could have.

Answers

At most 50 less than you. You have 300
So 300-50 =250 thats the best scenario, because 50 is most that can be subtracted. (Example, Instead of 50 it can be 40 but not 60. If 40, it becomes 260 so more than if subtracted by 50.)
So,
X>= 250

Please help worth 15 points

Answers

Answer:

[tex]30.25\pi ft^2[/tex]

Step-by-step explanation:

What does the red arrow represent in the dot plot?
O outlier
O mean
O spread
O median
NO LINKS!!!​

Answers

Outlier Is the answer you are looking for

The red arrow represents an outlier in the given dot plot. which the correct answer would be an option (A).

What is the dot plot?

A dot plot, sometimes known as a dot chart, is a sort of basic histogram-like graphic used in statistics for very small data sets with discrete values.

An outlier is a value in a random sampling from a population that is significantly different from the other values. In some ways, this definition leaves it up to the analyst (or a consensus process) to determine what is abnormal. Normal observations must first be characterized before anomalous observations may be identified.

The dot plot is given in the question,

According to the given dot plot,

Most data are clustered around [12, 14], while 24 is distant from this interval.

Thus, the red arrow represents an outlier in the given dot plot.

Hence, the correct answer would be option (A).

To learn more about the dot plot click here:

https://brainly.com/question/22746300

#SPJ2

Please I need help and an explanation :0

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

According to properties of arc on a circle, angles subtended by an arc on circle at its boundaries are equal to one another.

Hence ~

[tex] \qquad \dashrightarrow \tt \: \angle C = \angle W [/tex]

[tex]\qquad \tt \dashrightarrow \:12x + 15 = 3x + 78[/tex]

[tex]\qquad \tt \dashrightarrow \:12x - 3x = 78 - 15[/tex]

[tex]\qquad \tt \dashrightarrow \:9x = 63[/tex]

[tex]\qquad \tt \dashrightarrow \:x = 63 \div 9[/tex]

[tex]\qquad \tt \dashrightarrow \:x = 7[/tex]

Therefore, value of x is 7

Angles drawn inside chords and radius hence they are equal

12x+15=3x+789x=63x=63/9x=7


NEED HELPP I DONT UNDERSTAND??!!!

Answers

58 square inches
just break up the figure and find the area of each shape. then add all those together
BRAINLIEST PLEASE! TY!
The answer: 59.5

Because
1/2 x5 x3=15/2=7.5 inch ^2

Now

12+40+7.5=59.5 in^2

(LCM) of 28, 42 and 63

Answers

Answer:

252

Step-by-step explanation:

The least common multiple is the product of all factors in the greatest number of their occurrence.

LCM = 2 x 2 x 3 x 3 x 7

LCM = 2^2 x 3^2 x 7

LCM = 252

The least common multiple of 28, 42 and 63 is 252.

Answer:

LCM = 252.

Step-by-step explanation:

First find their prime factors:

28 = 2*2*7

42 = 2*3*7

63 = 3*3*7

So, only including like factors once, LCM =

2*2*3*3*7

= 252

Write the decimal in standard form.
seventy-three thousandths

Answers

7300

7×10³+3×10²+0×10¹+0×10⁰

please give me brainliest

10
2
Given the graph above, choose the coordinate point that is NOT a
solution.
(6.0)
(10,6)
(-8,6)
(0,0)

Answers

Answer: Choice C

(-8, 6)

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

Reason:

This point is not in the shaded region. Points in the shaded region are solution points to make the inequality true. Points on the dashed boundary line do not count as solution points.

Answer:

-8,6

Step-by-step explanation:

all of the other answers are within the highlighted area of tha graph and thus are solutions but -8,6 is outside the highlighted area

A car dealership offers two types of discounts.

Discount 1: Take 5% off the original price of a care built last year and then receive a $3,500 rebate.
Discount 2: Take 10% off the original price of a car built this year and then receive a $1,250 rebate.
A customer is deciding between two cars.

Car R was built last year and has an original price of $25,340.
Car S was built this year and has an original price of $22,860.
Based on this information, which statement is true?

Question 10 options:

The customer would pay $24,073 for Car R.


The customer would pay $19,324 for Car S.


The customer would pay $23,107 for Car R.


The customer would pay $21,824 for Car S.

Answers

Answer:

3.55,11.25,48.20,49.413,42.184

Step-by-step explanation:

$3,500 + 0.05% = $3.55

$1,250 + 0.010% = $11.25

$25,340 + $22,860 = $ 48.20

$25,340 + $ 24,073 = $ 49.413

$22,860 + $ 19,324 = $42.184

please help i don’t understand

Answers

Answer:5

Step-by-step explanation:

The population of a town is increasing at a rate of 3.5% per year. In 2010, the town had a population of 24,500. Find the population of the town in 2021. (if you can please give a short explanation)

Answers

well, from 2010 to 2021  is 11 years later, so

[tex]\qquad \textit{Amount for Exponential Growth} \\\\ A=P(1 + r)^t\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &24500\\ r=rate\to 3.5\%\to \frac{3.5}{100}\dotfill &0.035\\ t=years\dotfill &11\\ \end{cases} \\\\\\ A=24500(1 + 0.035)^{11}\implies A=24500(1.035)^{11}\implies A\approx 35769[/tex]

Solve the following....
[tex]x+4=3(x-2)[/tex]

Answers

Answer:

x = 5

Step-by-step explanation:

x + 4 = 3(x - 2) ← distribute parenthesis by 3

x + 4 = 3x - 6 ( subtract 3x from both sides )

- 2x + 4 = - 6 ( subtract 4 from both sides )

- 2x = - 10 ( divide both sides by - 2 )

x = 5

Answer:

Solution of equation is 5

Step-by-step explanation:

In the question we have given an equation that is x + 4 = 3 ( x - 2 ) . And we are asked to solve the question that means we have to find the value of x .

Solution : -

[tex] \longrightarrow \quad \: x + 4 = 3(x - 2)[/tex]

Step 1 : Solving parenthesis on right side :

[tex] \longrightarrow \quad \: x + 4 = 3x - 6[/tex]

Step 2 : Subtracting 4 on both sides :

[tex] \longrightarrow \quad \: x + \cancel{4} - \cancel{ 4 }= 3x - 6 - 4[/tex]

On further calculations we get :

[tex] \longrightarrow \quad \: x = 3x - 10[/tex]

Step 3 : Subtracting 3x on both sides :

[tex] \longrightarrow \quad \: x - 3x = \cancel{3x } - \cancel{3x}- 10[/tex]

On further calculations we get :

[tex]\longrightarrow \quad \: - 2x = - 10[/tex]

Step 4 : Dividing both sides by -2 :

[tex]\longrightarrow \quad \: \dfrac{ \cancel{ - 2}x}{ \cancel{ - 2} } = \cancel{\dfrac{ - 10}{ - 2} }[/tex]

On further calculations we get :

[tex]\longrightarrow \quad \: \red{\underline\red{\boxed{ \frak{ x = 5}}}}[/tex]

Therefore , value of x is 5 .

Verifying : -

We are verifying our answer by substituting value of x in given equation. So ,

x + 4 = 3 ( x - 2 )

5 + 4 = 3 ( 5 - 2 )

9 = 3 ( 3 )

9 = 9

L.H.S = R.H.S

Hence, Verified.

Therefore, our answer is correct .

#Keep Learning

(will mark brainlist )
a=&b=-6.C=13
a=-6.5=-8. C=13
a=-6.5=-S.C=-13
a=-&b=-6.C=-13

Answers

Answer:

A)  8, -6, 13

Step-by-step explanation:

See attached image.

Elaine drives her car 70 miles and has an average of a certain speed. If the average speed had been 3mph more, she could have traveled 77 miles in the same length of time. What was her average speed

Answers

Answer:

30 miles/hr

Step-by-step explanation:

d / r  = time     distance divided by rate = time

70 / r   = time     and    77/(r+3 ) = time       r = her original average speed

 'time' is the same for both so we can equate the equations

70/r = 77/(r+3)     cross multiply

70r + 210 = 77r

7r = 210

r = 30 m/hr

Find the slope of the line passing through (6, -2) and (-5, 5)

Answers

Answer: [tex]-\frac{7}{11}[/tex]

Step-by-step explanation:

The formula for finding slope is [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

Where [tex](x_{1} ,y_{1} )[/tex] are the coordinates of the first point and [tex](x_{2} ,y_{2} )[/tex] are the coordinates of the second point.

Sub the values in

[tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\\\frac{5-(-2)}{-5-6} \\[/tex]

Now solve

[tex]\frac{5-(-2)}{-5-6} \\\frac{7}{-11}[/tex]

(6,-2)(-5,5)

Slope:-

[tex]\\ \rm\dashrightarrow m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\\ \rm\dashrightarrow m=\dfrac{5+2}{-5-6}[/tex]

[tex]\\ \rm\dashrightarrow m=\dfrac{-7}{11}[/tex]

1. If x: 5 = 12:21 find the value of x.​

Answers

Answer:

x = 2.85 = 20/7

Step-by-step explanation:

x : 5 = 12 : 21

=》x/5 = 12/21

Cross multiply,
21 *x = 5*12

21x = 60

x = 60/21

x = 2.85 = 20/7

________

Hope it helps ⚜

Answer:

[tex]\huge\boxed{\sf x = 2.86}[/tex]

Step-by-step explanation:

Given proportionality:

x : 5 = 12 : 21

We know that:

Product of means = product of extremes

Means : 5,12

Extremes : x,21

5 × 12 = x × 21

60 = 21 x

Divide both sides by 21

60/21 = x

2.86 = x

x = 2.86

[tex]\rule[225]{225}{2}[/tex]

1/6 of a wall painted in 3/10 of an hour, how much did he paint in 1 hour

Answers

3/10 of an hour is 6x3=18 mins
To get to one hour we do 3/10 x 10 / 3
So we 1/6 x 10 / 3 = 10/6 / 3 =5/3 / 3=5/9
Other Questions
Click this link to visit the o*net page for food service managers. scroll down and look at the tools and technology sections. according to o*net, what are some common tools used by food service managers? select four options. cash registers laser printers stoves and ovens heating equipment notebook and personal computers personal digital assistants or organizers PLEASE HELP PLEASE PLEASE HELP Your monthly income is $5000. After paying bills, you have spent 70% of this months income. How much did you spend on the bills? 1. $4070 2. $4200 3. $2800 4. $3500 About how many copies of a dna region will be produced after 30 cycles in the pcr machine?. URGENT!! Please help!! I will mark brainliest! 220,000 population grows 8%. What will population be in 7 years What do you think the color of the Zooks and Yooks clothes represents? 20 cm16 cm10 cm12 cmV=help quick please Which story does Romero Britto tell through his use of the two same-sized hearts with different colors and patterns in The Best Buddies Friendship Bear? aBright colors bring attention to the artwork bChildren love squishy teddy bears cHearts symbolize love and devotion dPeople come together despite differences He boy with the glasses always makes an A on the test. All boys with glasses must be really smart. Question 1 options:Hasty Generalization Slippery Slope False Authority Red Herring what can the reader infer about the importance of the discovery of the shipwrecks has to archaeologists True or false: Historically, items as diverse as salt, fish, rocks, and shells have been used by various cultures as money. True false question. True False Sara and her friends go to a football game and get snacks from the concessions. She uses various pictures to show what they ordered. Which of the following expressions best represents their order F. 4d + h + 2fG. 4d + 2h + 2fH. h + 2f + 5d J. 2h + 4f + 3d I want to know the meaning of economic What is the perimeter of a 5 by 12 triangale Find the lowest common denominator for these fractions and then subtract and simplify.4/9 and 1/31/92/93/9 Yourthe major organs of respiration, are located in thebody cavity in humans.esA)lungs; A. dorsalB)lungs; B. thoracicC)Liver; C. abdominalD)trachea; D. ventralHeredHint Select the correct answer. jeffs father is installing a do-it-yourself security system at his house. he needs to get a device from his workshop that converts electric energy to sound energy. which device is jeffs father looking for? a. switch b. motor c. buzzer d. bulb e. battery What type of stress occurs when a rock mass is pushed in parallel and opposite directions? compression faulting shearing tension can someone help me fill this out??