if p (n,3)=1320what is n​

Answers

Answer 1

Answer:

n=12

Step-by-step explanation:

lol we meet again

just use the permutation formula for this one.

n!/(n-3)!=1320

[n×(n-1)×(n-2)×(n-3)!]/(n-3)!=1320

n(n-1)(n-2)=1320

(n²-n)(n-2)=1320

n³-3n²+2n-1320=0

n=12


Related Questions

Please help!! IM GIVING 100
POINTS

Answers

Answer:

the answer is 9.5

Step-by-step explanation:

in a class of 20 students, how many conversations must be had so that every student talks to every other student in the class?
A) 190
B) 380
C) 760
D) 6840

Answers

The answer is b - 380 students because each student (20 total) has to talk to 19 other students. 20*19= 380

Answer:

[tex]\text{A) }190[/tex]

Step-by-step explanation:

Similar to the handshake problem, if every student must talk with another person, each student will talk to 19 other students. However, a conversation consists of two people, so we must divide the number of ways we can rearrange the two people ([tex]2![/tex]). Therefore, our answer is [tex]\frac{20\cdot 19}{2!}=\boxed{\text{A) }190}[/tex]

someone help me plzz

Answers

Answer: y=5x+3
Step by step explanation:
Perpendicular meaning that the product of the slope/gradient is -1 hence ...
-1/5 * x = -1
x = -1/-1/5
x = 5
The equation perpendicular to y=-1/5x-3 is y=5x-c
Now it contains the points (1,2)
x variable is 1 and y variable is 2 plug them into the line equation
2=5(1)-c
2=5-c
2-5=-c
-3=-c divide by -1
3=c
Hence the perpendicular equation is y=5x+3
Hopefully it’s correct :)

Select all of the statements that are valid based on the survey results.

Answers

Answer:

all except the last one

Step-by-step explanation:

will name brainliest

Answers

Answer:

DE ≈ 6.97

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos55° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{EF}{DE}[/tex] = [tex]\frac{4}{DE}[/tex] ( multiply both sides by DE )

DE × cos55° = 4 ( divide both sides by cos55° )

DE = [tex]\frac{4}{cos55}[/tex] ≈ 6.97 ( to the nearest hundredth )

If anyone can solve this quickly I will give brainly

Answers

Answer:

m∠BFE  = 171º

BE = 219º

Step-by-step explanation:

∠BFE is supplementary to ∠EFC

m∠BFE  = 180 - 9

m∠BFE  = 171º

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

The angle between two chords is equal to half the sum of the intercepted arcs:

∠BFE = (DC + BE)2

171 = (123 + BE)/2

342 = 123 + BE

219º = BE

Marking brainliest

Please help

Answers

Answer:

sociable I think........

Ohh Jessica it’s intrigued

The ratio of small dogs to big dogs at the park is 1:3. Which does not represent this ratio?
A.3:9
B.9:27
C.2:4
D.30:90
FAST PLS 26 POINTS!

Answers

Answer:

C.2:4

Step-by-step explanation:

1*2=2

3*2=6

2:6=2:4

    |

    |

    |

not true so it is C.

The answer I believe is c

Hhrlppp me helppp meeree

Answers

Yes, hrplplpl meeeeeeeeee

what is the answer for
5x - 2 = 3x + 4 ​

Answers

Answer: X = 3

Step-by-step explanation:

5x - 2 = 3x + 4

5x = 3x + 6 (+2 to both sides)

2x = 6

x = 3

In ΔNOP, the measure of ∠P=90°, NO = 49 feet, and OP = 19 feet. Find the measure of ∠N to the nearest degree.

Answers

Answer:

N=22.815≈23  

Step-by-step explanation:

SIN N=19/49

N=\sin^{-1}(\frac{19}{49})

N=sin

N=22.815≈23  

Linsay was going to visit her grandmother shop at the mall and then return home the route she took was in the shape of a triangle the distance between each patient visit it was 10 miles what type of triangle is formed by the route she traveled?

Answers

Answer:

an equilateral triangle

Step-by-step explanation:

A triangle is a three-sided polygon with three edges and three vertices. the sum of angles in a triangle is 180 degrees

Area of a triangle = 1/2 x base x height

the perimeter of a triangle = sum of the side lengths

An equilateral triangle is a triangle with three equal sides. the distance travelled her all equal to 10 miles.

Which relationship is true for the triangle based on the Law of Sines?

Answers

Answer:

We know the  angle given refers to the length of the opposite side.

Given angle = 82 and the opposite side = 34 so part of the  relationship is

sin 82 / 34 = sin (  ) / ( )

We are also given one side = 27 and that side is opposite angle at C

so that part of the relationship is   sin C / 27

sin 82 / 34 = sin C / 27

A true relationship based on the Law of Sines was found in the given triangle.

In the given triangle

∠A=82°

Length of side in front of ∠A = 34

Length of side in front of ∠C = 27

What is sine law?

According to sine law, in a triangle, ABC, if the sides in front of ∠A, ∠B, ∠C are a, b, c respectively then

[tex]\frac{SinA}{a} =\frac{SinB}{b} =\frac{SinC}{c}[/tex]

According to the sine law, the sides in front of angle A and angle C are 34 and 27 respectively.

So, [tex]\frac{Sin82}{34} =\frac{SinC}{27}[/tex]

Hence, a true relationship based on the Law of Sines was found in the given triangle.

To get more about sine law visit:

https://brainly.com/question/24175301

Résoudre l'équation suivantes :
-9x+3=3x+9

Answers

Answer:

x = - [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

- 9x + 3 = 3x + 9 ( subtract 3x from both sides )

- 12x + 3 = 9 ( subtract 3 from both sides )

- 12x = 6 ( divide both sides by - 12 )

x = [tex]\frac{6}{-12}[/tex] = - [tex]\frac{1}{2}[/tex]

Please help me !!!!!!​

Answers

Second one is correct, The value of -a - c is positive

See, from the number line a = -6 and c = 2

Now, -a - c

= -(-6) -(2)

= +6 - 2 = 4

Which is true...

(Worth 30 points) I seriously need help3 please show your working:)

Answers

Answer:

a.

radius [r]=breadth[b]=4in

length [l]=7in

now

[C]area 1/4 th circle +area of 1/4th circle= semi circle =1/2×πr²h=1/2×π×4²=8πin²=25.13in²

area of rectangle [A]=l×b=7×4=28in²

total area =A+C=28in²+25.13in²=53.13in²

Step-by-step explanation:

b.

height [h] of triangle =12-4=8cm

base[b] of triangle= 12-3.5-3.5=5cm

area of triangle [A]=1/2×b×h=½×8×5=20cm²

again

length of square [L]=12cm

area of square [S]=L²=12²=144cm²

Area of shaded region=S-A=144-20=124cm²

PLEASE HELP ME HAVGDJSGEVSJSGE

Answers

Answer:

[tex]9\pi -18[/tex]

Step-by-step explanation:

SOMEONE PLEASE HELP!!!! I REALLY NEED HELP! ALSO PLEASE EXPLAIN IT NOT JUST THE ANSWER!! THANK YOU

Question: If 2cm represents 75 miles on a scale drawing. How long would a line segment be that represents 50 miles?

Answers

Answer:

1.33cm

Step-by-step explanation:

if 2cm is representing 75 miles, that means that .66 (repeating) is representative of 25 miles. This is because .66 (repeating) times 3 is equal to 2, and 25 times 3 is equal to 75. The reason 1.33cm would be equal to 50 miles is because if 25 miles is equal to .66, and 50/25 = 2, then you would have 2x.66 (repeating), to get 1.33.


PLEASEEEE HELP PLEASEEEE

Answers

Answer:

A. Parallelogram LMNP

B. 33

C. 98°

Step-by-step explanation:

LMNP is a parallelogram.

Adjacent angles of a parallelogram are Supplementary.

[tex] \therefore 82\degree +(3x - 1)\degree =180\degree [/tex]

[tex] \therefore (3x - 1+82)\degree =180\degree [/tex]

[tex] \therefore (3x +81)\degree =180\degree [/tex]

[tex] \therefore 3x +81 =180 [/tex]

[tex] \therefore 3x =180-81 [/tex]

[tex] \therefore 3x =99 [/tex]

[tex] \therefore x =\frac{99}{3} [/tex]

[tex] \therefore x =33 [/tex]

[tex] \implies m\angle N= (3x - 1)\degree=(3*33 - 1)\degree=(99-1)\degree = 98\degree [/tex]

[tex] \because m\angle L =m\angle N[/tex]

(Opposite angles of a parallelogram)

[tex] \therefore m\angle L =98\degree [/tex]

Answer:

1 no the quadilateral is parallelogram

2 no .82+82+3x-1+3x-1=360

162+6x=360

6x=198

x=198/6

x=33

3 no angle L =3x-1(opposite angles of a parallelogram are equal)

3*33-1

99-1

98

Step-by-step explanation:

PLEASEEEE EHELP ILL MARK BRANILIZES

Answers

Answer:

Below

Step-by-step explanation:

First, find the difference. You would do

-19 - (-9) = -10

-9 - 1 = -10 and so on...

The difference is -10

Now you need to find what number will make 11 when added to -10.

11 - (-10) = 21

The equation:

y = -10x + 21

Find the volume of the prism. Write the answer as a fraction in simplest form. A rectangular prism with length one-half millimeter, width one-fourth millimeter, and height three-fifths millimeter. V = mm3

Answers

Answer:

[tex]V=0.09375\ mm^3[/tex]

Step-by-step explanation:

Given that,

The length of the rectangular prism = (1/2) mm

Width = (1/4) mm

Height = (3/4) mm

We need to find the volume of the prism. We know that the formula for the volume of a rectangular prism is given by :

V = lbh

Put all the values,

[tex]V=\dfrac{1}{2}\times \dfrac{1}{4}\times \dfrac{3}{4}\\\\V=0.09375\ mm^3[/tex]

So, the volume of the prism is equal to [tex]0.09375\ mm^3[/tex].

Use the proportion below to determine 30% of 20.

Answers

Answer:

x=6

Step-by-step explanation:

What is the value of the expression?
2 + 4x32 - 7+1

-
this is timed..

Answers

Answer:

124

Step-by-step explanation:

Answer:

124

Step-by-step explanation:

2+(4)(32)−7+1

=2+128−7+1

=130−7+1

=123+1

=124

Can someone help me with this? Please and thank you

Answers

Answer:

what is the question ?

........................

Determine if the statement "Opposite sides of a parallelogram are congruent." is always, sometimes, or never true. Always, sometimes, or never

Answers

Answer:  Always true

Explanation:

This can be proven by dividing the parallelogram into two triangles, and then proving the triangles congruent (use ASA). Once you know the triangles are congruent, then the corresponding pieces must be congruent as well. The corresponding pieces being the same length tells us that the opposite sides of a parallelogram are always congruent.

Sum of interior angles in a polygon is 3240. How many sides are in the polygon?

Answers

Answer:

20

Step-by-step explanation:

Giving brainlist to whoever answers

Answers

Answer:

C

Step-by-step explanation:

I hope it helps !!! :)

Answer:

i believe its b but i may be wrong i don know. hope this helped

Step-by-step explanation:

Which set of data could have been used to create the stem-and-leaf plot shown below?




#1. 6.3, 7.9, 9.5, 8.3, 8.1, 9.0, 6.7, 8.6, 9.1, 8.4, 8.1, 6.9, 8.3, 9.2:

#2. 64, 79, 95, 83, 81, 90, 67, 86, 91, 84, 81, 69, 83, 92

#3. 6.4, 7.9, 9.5, 8.3, 8.1, 9.0, 6.7, 8.6, 9.1, 8.4, 8.1, 6.9, 8.3, 9.2

#4. 63, 79, 95, 83, 81, 90, 67, 86, 91, 84, 81, 69, 83, 92

Answers

Answer:

#2 64, 79, 95, 83, 81, 90, 67, 86, 91, 84, 81, 69, 83, 92

Step-by-step explanation:

A stem-and-leaf plot is a detailed graphical presentation of quantitative data on special kind of table that promotes visualizing the individual numbers in the data with the number at the stem being the first digits of the numbers in the data set while the leaf represent the last digit of each number in the data set

Following the above rule, the data in the given stem-and-leaf plot are;

64, 67, 69, 79, 81, 81, 83, 83, 84, 86, 90, 91, 92, 95

Therefore, the set of data that could have been used to create the stem-and-leaf plot is the data set that has all the numbers in the given stem-and-leaf plot which is the data set;

64, 79, 95, 83, 81, 90, 67, 86, 91, 84, 81, 69, 83, 92.

Why is this equation not valid? Please help

Answers

Answer:

not valid..

Step-by-step explanation:

I’m decent at math, but what is this

If a rectangle measures 12 meters by 16 meters, what is the length, in meters, of the diagonal of the rectangle?

Answers

Answer: it’s 20m long

Step-by-step explanation:

I can’t explain .—.

Answer:

20 meters

multiply the length by itself then multiply the width by itself then add them together then the square root of the total is the diagonal length.

step-by-step explanation :

16 x 16 = 256

12 x 12 = 144

256 + 144 = 400 sq rt = 20

Answer. The diagonal length is 20 meters

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