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erma4kov [3.2K]
3 years ago
15

A library has 11 books on chemistry, 11 books on maths and 11 books on physics. In how many ways can these books be arranged in

groups of eleven?
Mathematics
1 answer:
Mumz [18]3 years ago
8 0
<span>Distributing the 33 books in groups of 11 will make it 3 groups . the first group can be selected in 33C11 ... the next 11 can be selected in 22C11 ways and the last group can be selected in 11C11 ways . If you calculate uptill now the answer will apparently seem to be option 1 . But since the 3 groups are indistinguishable, all the possible ways of arranging these three groups in the order of their selection is negated .. therefore we have to divide the answer by 3!</span>
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ScrapBook,you cut a picture into a right triangle for your scrapbook, the lengths of the lago of the triangle are 4 inches and 6
AveGali [126]

Answer:

hypotenuse is not a rational number

Step-by-step explanation:

In a Right angled triangle , if a, b are the sides and h be the hypotenuse then relationship between them is given by

h^{2} = a^{2} + b^{2}

Here,

         a= 4 in.        [Given]

          b = 6 in.       [Given]

Thus ,

  h^{2}  = 4^{2} + 6^{2}

  h^{2}  =  16 + 36

  h^{2}  = 52.

   h = \sqrt{52}  = 7.21110255......

Clearly, h is not a rational number

6 0
3 years ago
Tell me 15 jokes or 5 good movies for a pg13
Effectus [21]
Hunger Games, Jumanji, Before I Fall, Birdbox, and Zodiac
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3 years ago
Help plz!<br> Which of the following graphs could represent a cubic function?
Ratling [72]

Answer:

C. Graph C

General Formulas and Concepts:

<u>Algebra II</u>

  • Graphs of parent graphs

Step-by-step explanation:

A cubic function would be f(x) = x³. When we graph this, it should look like Graph C.

8 0
3 years ago
Read 2 more answers
A rectangular piece of paper has a width that is 3 inches less than its length. It is cut in half along a diagonal to create two
Oliga [24]

Let

x-------> the length of the rectangle

y------> the width of the rectangle

we know that

The area of the rectangle is equal to

A=x*y

The area of the two congruent right triangles  is equal to the area of the rectangle

A=2*44=88\ in^{2}

so

88=x*y -------> equation A

y=x-3 -----> equation B

Substitute equation B in equation A

x*[x-3]=88

x^{2} -3x-88=0 --------> equation that can be used  to solve for the length of the rectangle

Using a graph tool-------> solve the quadratic equation

see the attached figure

The solution is

x=11\ in -----> the length of the rectangle

Find the value of y

88=11*y

y=8\ in  ----> the width of the rectangle

Statements

<u>case A)</u> The area of the rectangle is 88 square inches

The statement is True

See the procedure

<u>Case B)</u> The equation  x*[x-3]=44 can be used to solve for the dimensions of the triangle

The statement is False

Because, the equation x*[x-3]=88 can be used to solve for the dimensions of the triangle

<u>case C)</u> The equation x^{2} -3x-88=0 can be used to solve for the length of the rectangle

The statement is True

see the procedure

<u>case D)</u>The triangle has a base of 11 inches and a height of 8 inches

The statement is True

Because, the base of the triangle is equal to the length of the rectangle and the height of the triangle is equal to the width of the rectangle

<u>case E)</u> The rectangle has a width of 4 inches

The statement is False

See the procedure

8 0
3 years ago
Read 2 more answers
Choose the value for x that solves this equation. 0 = -2x + 6
lana66690 [7]

<em>Answer:</em>

<em>x = 3</em>

<em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>0 = - 2x + 6</em>

<em>2x = 6</em>

<em>x = 6 : 2</em>

<em>x = 3</em>

<em>Good luck !</em>

7 0
3 years ago
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