If n is a positive integer, how many 5-tuples of integers from 1 through n can be formed in which the elements of the 5-tuple are written in increasing order but are not necessarily distinct? In other words, how many 5-tuples of integers (h, i, j, k, m) are there with 1 ≤ h ≤ i ≤ j ≤ k ≤ m ≤ n? As in Example 9.6.3, you can represent any ordered 5-tuple of integers (h, i, j, k, m) with 1 ≤ h ≤ i ≤ j ≤ k ≤ m ≤ n as a string of n − 1 vertical bars and 5 crosses, with the position of crosses indicating which 5 integers from 1 to n are included in the 5-tuple. Thus, the number of 5-tuples is the same as the number of strings of n+4 vertical bars and 5 crosses, which is n(n+1)(n+2)(n+3)(n+4) 120​ .

Answers

Answer 1

Answer:

[tex]\frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{120}[/tex]

Step-by-step explanation:

Given

5 tuples implies that:

[tex]n = 5[/tex]

[tex](h,i,j,k,m)[/tex] implies that:

[tex]r = 5[/tex]

Required

How many 5-tuples of integers [tex](h, i, j, k,m)[/tex] are there such that[tex]n\ge h\ge i\ge j\ge k\ge m\ge 1[/tex]

From the question, the order of the integers h, i, j, k and m does not matter. This implies that, we make use of combination to solve this problem.

Also considering that repetition is allowed:  This implies that, a number can be repeated in more than 1 location

So, there are n + 4 items to make selection from

The selection becomes:

[tex]^{n}C_r => ^{n + 4}C_5[/tex]

[tex]^{n + 4}C_5 = \frac{(n+4)!}{(n+4-5)!5!}[/tex]

[tex]^{n + 4}C_5 = \frac{(n+4)!}{(n-1)!5!}[/tex]

Expand the numerator

[tex]^{n + 4}C_5 = \frac{(n+4)!(n+3)*(n+2)*(n+1)*n*(n-1)!}{(n-1)!5!}[/tex]

[tex]^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{5!}[/tex]

[tex]^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{5*4*3*2*1}[/tex]

[tex]^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{120}[/tex]

Solved


Related Questions

Name the solid figure formed by the net.

Answers

Answer:

square

Step-by-step explanation:

it is a square because all the shapes/parts are the same size

it also has 6 faces, 12 vertices

Kayla walks 4 2/5 miles each day. How far does she walk?​

Answers

10 miles bababab fill out character limit
You didn’t post all the info

Please help me please !

Answers

Answer:

For the first one:

y = 2/3x + 1

For the second one:

y = -5x + 4

Step-by-step explanation:

As you may already know, in the y=mx+b equation format:

m = slope

b = y-intercept

On the graph, it already shows the y-intercept, so you can automatically find your b in the equation.

And, the easiest, most quick way to find the slope by using a graph is to calculate using rise/run. So, by doing that you can calculate the equation.

Then, you can just leave the variables y and x alone.

Hope this helped!!

Determine the area of the composite figure to the nearest whole number.
26 cm2
B)
38 cm?
46 cm2
85 cm2

Answers

Step-by-step explanation:

Area of rectangle= l×b

= 4cm×6cm

= 24cm²

Area of circle. = πr²

radius of circle = diameter÷2=6÷2=3cm

Area of circle. = 3.14×3²=3.14×9

Area of circle. = 28.26cm²

[tex]area \: of \: composite \: figure = area \: of \: circle \: + area \: of \: rectangle[/tex]

Area of........... = 28.26cm²+24cm²

= 52.26cm²

PLEASE MARK BRAINLIEST.

The area of the composite shape is: B. 38 cm²

What is the Area of a Composite Shape?

Area of a composite shape = sum of the area of each shape that makes up the composite shape.

Thus:

Area of composite shape = area of semicircle + area of rectangle

= 1/2πr² + length × width

Radius (r) = 1/2(6) = 3 cm

Length = 6 cm

Width = 4 cm

Substitute

Area of composite shape = 1/2(3.14)(3²) + 6 × 4

Area of composite shape = 38 cm²

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PLEASE HELP ITS DUE IN 39 minutes
For each graph below state weather it represents a function
Graph 1
Graph 2
Graph 3
Graph 4
Graph 5
Graph 6

Answers

Answer:

Graph 4

Step-by-step explanation:

Help pls number 17 show work if needed!ty!

Answers

Answer:

Step-by-step explanation:

Use the coordinates of two points to determine the slope of the line through them.

Using (3,105) and (1,35):  slope = (105-35)/(3-1) = 35

Point-slope equation for line of slope 35 passing through (1,35):

y-35 = 35(x-1)

y = 35x, which is equivalent to Brian's equation.

Which of the following inequalities matches the graph? (2 points)
10
8
6
4
Х
-10 -8
-6
-4
2
6
8
10
-2
-6
8
-10
The correct inequality is not listed.
3x - 2y 4
O 3x - 4y = 2
O 3x - 2y > 4

Answers

Answer:

r5dd

Step-by-step explanation:

The inequality shown in the graph is 3x - 2y ≤ 4.

What is Inequality?

Inequalities are mathematical formulas in which neither side is equal. Unlike equations, we compare two values in inequality. In between, the equal sign is substituted by a less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

As, we take two points from the graph (0, -2) and (4, 4).

Now, the slope of solid line

slope = (4 + 2)/ (4- 0)

slope = 6 /4

slope = 3/2

and, equation of solid line is

y - (-2) = 3/2 (x-0)

y+ 2 = 3/2 x

y= 3/2 x - 2

Then, the required inequality is

y + 2 ≥ 3/2 x

Multiply both sides by 2.

2y+ 4 ≥ 3x

3x - 2y ≤ 4.

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You buy shrimp at the market.
The shrimp cost $34.99 for two 2.5-pound bags.

What is the unit rate of the shrimp in dollars per pound?
Find the unit rate to the nearest dollar.
Options: $30 per pound $0.14 per pound $7 per pound $14 per pound

Answers

Two 2.5 pound bags = 5 pounds for $34.99
34.99/5 pounds = 6.998 or $7/pound

Help !!? Please please

Answers

9514 1404 393

Answer:

  [[-14][-1]]

Step-by-step explanation:

Row m of the first matrix is multiplied term-by-term by column n of the second matrix to get term (m,n) of the product matrix.

  [tex]\left[\begin{array}{cc}2&-4\\3&-1\end{array}\right]\times\left[\begin{array}{c}1&4\end{array}\right] =\left[\begin{array}{c}(2)(1)+(-4)(4)&(3)(1)+(-1)(4)\end{array}\right] =\left[\begin{array}{c}-14&-1\end{array}\right][/tex]

A 1x1 square and an n-tiling is a group of n tiles placed so that every tile is contiguous along at least one side to another tile. (The tiles cannot be offset. That is, they must be placed into a grid like Scrabble tiles.) The edge length of a tiling is the total length of edges that are not touching other tiles. For instance, a 20-tiling, the edge length is 36.

Required:
Prove that for all n-tilings where n >= 1, the edge length is even.

Answers

Answer:

Step-by-step explanation:

The first picture below shows the missing image in the question.

There are 4 edges of each tile;

This clearly explains to us that the total number of edges present in the n tiles is 4n.

Now, if a tile "X" touches and comes in contact with another tile "Y", then edges touching each other are one edge of a tile X and one edge of a tile Y.

From the second diagram below, the edge, X_2, and Y_4 are touching each other.

Now, the total number of edges that touch some edges is always even.

We can now say that:

The edge length of filling = No. of edges that do not touch another file

= Total no. of edges  -  No. of edges that touch another edge.

However, the total number of edges is even.

The number of edges that touch another edge is also even.

Thus, the difference is also even and the number of edges that do not touch another is even.

So, the edge length of filling is always even.

What is the gcf of 96 and 64 ☹️ Helpppp

Answers

Answer:

32

Step-by-step explanation:

:)

True or false? The graph represents a function
5
-5
A True
B. False

Answers

Answer:

True

Step-by-step explanation:

It passes the vertical line test, meaning you can draw a vertical line anywhere on the graph and it will only intersect at one point

this means that for every input (x value) there is only one output (y value)

Yes, The graph represents a function.

What is mean by Function?

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

We have to show a graph.

Now, We know that;

The vertical line test, meaning you can draw a vertical line anywhere on the graph and it will only intersect at one point, then  it represent a function.

Here, The graph satisfy vertical line test, this means that for every input (x value) there is only one output (y value).

Thus, The graph represents a function.

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9x+6-4x=4x+7 pls pls pls pls pls pls help

Answers

9x+6-4x=4x+7

5x+6=4x+7

   -6       -6

5x=4x+1

-4x -4x

x=1

---

hope it helps

A swimming pool holds 528 cubic feet of water. It measures 11 feet by 8 feet. How deep is the swimming pool? ​

Answers

Answer:

6 feet

Step-by-step explanation:

If 2/3x - 1 = 4 , then x =

Answers

Answer:

2/5

Step-by-step explanation:

After solving the given equation, we get the value of x is

What is Equation?

"An equation is a statement of equality between two expressions consisting of variables and/or numbers."

Solve the given equation, to find the value of x

[tex]\frac{2x}{3}-1 =4\\\frac{2x-3}{3}=4\\ 2x-3=12\\2x=15\\x=\frac{15}{2}\\ x=7.5[/tex]

Hence, the value of x is 7.5

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I will give extra points please help

Answers

Answer:

22

Step-by-step explanation:

You can substitute a with 15. So now, the equation is 2(15 - 5) + 2.

We can use PEMDAS to solve this equation now. Since the P is first in PEMDAS, we have to solve what's inside the parentheses first. 15 - 5 would be 10. So now the equation is 2(10) + 2.

There's no more to solve in the parentheses, so we can move on to multiplication. 2(10) would be 20. So now the equation is 20 + 2.

Add 20 + 2 and you get 22. Hope that helps!

Plllllssssssss Brainliest yo first answer pleassseeee

Answers

Answer:

26 mm

Step-by-step explanation:

Answer:

26

Step-by-step explanation:

you use the Pythagorean theorem so it look like: 10^2 + 24^2 = c^2

then u solve with algebra

need help solving -7=6+ k
---------- 10​

Answers

Answer:

The answer is k = -13.

Step-by-step explanation:

1) Subtract 6 from both sides.

[tex] - 7 - 6 = k[/tex]

2) Simplify -7-6 to -13.

[tex] - 13 = k[/tex]

3) Switch sides.

[tex]k = - 13[/tex]

Therefor, the answer would be k = -13.

I need help it’s due today
I will mark brainliest if you help

Answers

Answer:

Step-by-step explanation:

839°

it would be amazing if you can help me with this !

Answers

Answer:

Step-by-step explanation:

Blank 1 = " x "

Blank 2 = " 3 "

Read the problem and decide whether it has too much or too little
information.
Harvey the Huge once lifted a box filled with 100 bricks and 50 rocks. Each
brick weighed 10 pounds. The rocks were all fairly small. What is the total
weight of what Harvey lifted?
A. Too little
B. Too much

Answers

I believe it’s b: too much not quite sure

Answer:

B. Too little information.

Step-by-step explanation:

The information provided in the problem is sufficient to determine the total weight of what Harvey lifted. Therefore, the problem has:

B. Too little information.

Is it against the law to be a Communist in the United States of America?

Answers

Answer:

no.

Step-by-step explanation:

Answer:

I don't believe there is any laws specifically saying that its illegal, but its probably not advised.

Hendrick read b books in January, twice that amount in February, and I book in March






please help me fast​

Answers

Answer:

in total? if so it is 3b +1 books

Step-by-step explanation:

QUICK HELP!!!!
One less than the product of 10 and a number Use the variable n to represent the unknown number.

Answers

Answer:

the unkniwn number if the variable would be 16

Step-by-step explanation:

bc if u divie 10 by 6 its eguals up to 11 then u add 5 and it equals 16

A bicycle has a listed price of $813.95 before tax. If the sales tax rate is 8.5%, find the total cost of the bicycle with sales tax included. Round your answer to the nearest cent, as necessary. ​

Answers

Answer:

$883.14

Step-by-step explanation:

Have a great day! ;)

Answer:

813.95*%8.5=69.19

69.19+813.95=883.14

883.14

A beach resort has 29 jet skis for guests to rent. Of these, 14 are two-person skis, 18 haveturbo packs, and 10 are both for two persons and have turbo packs. LetTbe the event that a jetski, randomly chosen, is a two-person ski, and letPbe the event that the ski has a turbo pack.A jet ski is chosen at random for rental. Find the probability for each of the following events.

Answers

Questions:

a. The jet ski is for two persons and has turbo packs.

b. The jet ski is not for two persons but has turbo packs.

Answer:

[tex]P(P\ and\ T) = \frac{10}{29}[/tex]

[tex]P(P\ and\ T') = \frac{270}{841}[/tex]

Step-by-step explanation:

Given

[tex]n=29[/tex] --- Total

[tex]T = 14[/tex] --- Two person skis

[tex]P = 18[/tex] --- Turbo packs skis

[tex]P\ and\ T = 10[/tex] --- Two person ski and Turbo packs

Solving (a):

This is represented as: [tex]P(P\ and\ T)[/tex]

This is calculated as:

[tex]P(P\ and\ T) = \frac{n(P\ and\ T)}{n}[/tex]

[tex]P(P\ and\ T) = \frac{10}{29}[/tex]

Solving (a):

This is represented as: [tex]P(P\ and\ T')[/tex]

This is calculated as:

[tex]P(P\ and\ T') = P(P)\ and\ P(T')[/tex]

[tex]P(P\ and\ T') = P(P)\ *\ P(T')[/tex]

Using the complement rule, we have:

[tex]P(T') = 1 - P(T)[/tex]

The equation becomes:

[tex]P(P\ and\ T') = P(P)\ *\ [1 - P(T)][/tex]

[tex]P(P\ and\ T') = \frac{n(P)}{n}\ *\ [1 - \frac{n(T)}{n}][/tex]

[tex]P(P\ and\ T') = \frac{18}{29}\ *\ [1 - \frac{14}{29}][/tex]

[tex]P(P\ and\ T') = \frac{18}{29}\ *\ \frac{29-14}{29}[/tex]

[tex]P(P\ and\ T') = \frac{18}{29}\ *\ \frac{15}{29}[/tex]

[tex]P(P\ and\ T') = \frac{18*15}{29*29}[/tex]

[tex]P(P\ and\ T') = \frac{270}{841}[/tex]

The price of a math textbook can be modeled by the equation:
y = 22 + 76, where x is time in years and y is the price of
the textbook. This equation tells us that the textbook originally
cost $76 and each year the cost went up $2. How many years
will it take for the textbook to cost $100?

Answers

Answer:

I am not sure if you have to be a good time

When x = a is a zero of a polynomial function f, the three statements below are true.
(a) x = a is a ---Select--- A of the polynomial equation f(x) = 0.
(b) ---Select-- A is a factor of the polynomial f(x).
(c) (a,0) is a ---Select--- of the graph of f.

Answers

Answer:

x = a is a zero of a polinomial f(x), this is the same than: f(x) has a root at x = a

Then: f(a) = 0.

a) x = a is a ____ of the polynomial equation f(x) = 0.

If we define f(x) = 0, then x = a is a solution of the equation.

Then the complete sentence is:

x = a is a solution of the polynomial equation f(x) = 0.

b) ____ is a factor of the polynomial f(x).

Remember that if a polynomial p(x) of degree n has the roots x₁, x₂, ..., xₙ

Then we can write p(x) in the factorized form as:

p(x) = A*(x - x₁)*(x - x₂)*...*(x - xₙ)

Where A is a real number.

Then if in this case we know that a is a root of f(x), then (x - a) is a factor of the polynomial f(x), then the complete sentence is:

(x - a) is a factor of the polynomial f(x).

c) (a, 0) is a ____ of the graph f(x)

We usually use the notation y = f(x).

Then the points of the form (x, f(x)) are the points that belong to the graph of f(x).

In this case, the point (a, f(a)) = (a, 0)

This point belongs to the graph of f(x), then the complete sentence can be written as:

(a, 0) is a point of the graph f(x).

Help!!! Asap!! Will give out brainliest!! Need to explain how you did it please and thanks!! Just look at the picture attached!! Thank you so much!!
9) Which piecewise function is shown on the graph?
8
[485 - 5, ICO
f(3) = 3 0 SI56
-- - 7, I>6
6
2
(-4e5 – 5, I<0
(*) = 3
03:36
|-+7 >6
.
>
2
-6
-3
(465 - 5, ICO
0 SI56
1-5+7,> 6
(ges + 5, sco
f(1) = 3
0 SI56
= + 7
I>6

Answers

9514 1404 393

Answer:

  C  f(x) = {4e^x -5, ..., -x +7, ...

Step-by-step explanation:

The easiest portion to check is the constant section in the interval [0, 6]. All of the function definitions agree on that, so that doesn't help choose the right answer.

__

Next easiest is the linear section at the right. It has a negative slope. Extension of the line to the y-axis shows it has a positive y-intercept. This eliminates choices A and D.

__

The horizontal asymptote of the exponential portion at the left is -5. Both of the remaining choices B and C agree on that. The exponential is increasing at an increasing rate, so its coefficient is positive. This eliminates choice B.

The appropriate description of the function on the graph is offered by choice C.

_____

The graph below plots the function. We note that the given graph seems to show the exponential curve incorrectly.

Which of the sets of equations represent the two lines graphed?
A)y=x+2 and y=x-4
B)y=x+2 and y=-x-4
C)y=-x+2 and y=x-4
D)y=x-2 and y=-x-4

Answers

Answer:

y = x + 2

y =-x - 4

Step-by-step explanation:

Find the slope and y-intercept of each lines to write the equation in slope intercept form: y = mx + b where m is the slope and b is the y-intercept

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