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Zepler [3.9K]
4 years ago
6

How can probabilities be used to make fair decisions?

Mathematics
1 answer:
GarryVolchara [31]4 years ago
6 0

he magician starts with the birthday boy and moves clockwise, passing out 100100100100 pieces of paper numbered 1111 through 100100100100. He cycles around the circle until all the pieces are distributed. He then uses a random number generator to pick an integer 1111 through 100100100100, and chooses the volunteer with that number.

Method2: The magician starts with the birthday boy and moves counter-clockwise, passing out 75757575 pieces of paper numbered 1111 through 75757575. He cycles around the circle until all the pieces are distributed. He then uses a random number generator to pick an integer 1111 through 75757575, and chooses the volunteer with that number.

Method 3\: The magician starts with the birthday boy and moves clockwise, passing out 30303030 pieces of paper numbered 1111 through 30303030. He cycles around the circle until all the pieces are distributed. He gives #1111 to the birthday boy, #2222 to the next kid, and so on. He then counts the number of windows in the room and chooses the volunteer with that number.

yes probabilites can be used to make fair ones

thanx

heya

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9. A rectangle has a width that is 2 feet longer than four times the length. What is the length of the rectangle
Bad White [126]

Answer:

6 feet

Step-by-step explanation:

Perimeter = 2L + 2W

Since you know the perimeter is 64 feet, you would plug that into the perimeter side.

64 = 2L + 2W

You also know the width is 2 feet longer than 4 times the length.

64 = 2L + 2(2 + 4L)  ----> Multiply 2 * 2 and 2 * 4l

64 = 2L + 4 + 8L  ----> Subtract 4 from each side

-4           -4

60 = 2L + 8l ----> add these two

60 = 10L

/10   /10 -----> divide by 10 on each side

6 = L

Now that we know the length, find the width.

64 = 2(6) + 2(2 + 4(6)) -----> multiply 2 * 6 and 4 * 6

64 = 12 + 2(2 + 24) -------> add 24 and 2

64 = 12 + 2(26) -------> multiply 2 and 26

Before you go any further, you now know that the width is 26 feet. Continue solving.

64 = 12 + 52

64 = 64

Everything checks out.

The length is 6 feet and the width is 26 feet.

3 0
3 years ago
What type of transformation is performed when the pre-image is "flipped" over a line? translation
vivado [14]
Reflection is when the pre-image is flipped over a line.
8 0
4 years ago
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Yesterday, there were 30 problems assigned for math homework. Nancy did 10% of them correctly. How many problems did Nancy get w
alisha [4.7K]

Answer:

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Step-by-step explanation:

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3 years ago
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Which parent functions have an intercept at (0,0)Choose all that are correct.
inessss [21]

Answer:

Linear, Quadratic, Radical, Absolute Value, Cubic, Cube Root

Step-by-step explanation:

To find:

Which functions have an intercept at (0, 0).

That means, when we put a value x=0 in the y =f(x), value of y=0.

Let us discuss each <em>parent</em> function one by one:

1. Linear:

y = x

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

2. Quadratic:

y = x^2

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

3. Radical:

y = \sqrt x

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

4. Absolute Value:

y = |x|

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

5. Rational:

y = \dfrac{1}{x}

When we put x = 0\Rightarrow  y \rightarrow \infty

Therefore, it does not have intercept at (0, 0).

6. Exponential:

y = b^x

b is any base

When we put x = 0\Rightarrow  y =1

Therefore, it does not have intercept at (0, 0).

7. Logarithmic:

y = logx

When we put x = 0 \Rightarrow  y\rightarrow Not defined

Therefore, it does not have intercept at (0, 0).

8. Cubic:

y = x^3

When we put x = 0\Rightarrow  y =0

Therefore, it has intercept at (0, 0).

9. Cube Root:

y = \sqrt[3]x

When we put x = 0\Rightarrow  y =0

Therefore, it has intercept at (0, 0).

3 0
3 years ago
Find x. A. 22 B. 113–√ C. 222–√ D. 113√3
serg [7]

Answer:

x = 31.12

Step-by-step explanation:

First find the base (hypotenuse) of the smaller triangle (the isosceles triangle):  Its three sides are 11, 11 and b.  b can be found using the Pythagorean Theorem:  b^2 = 11^2 + 11^2 = 242.  Then b = √242, or b = approximately 15.56.

b (which is approximately 15.56) is the shorter leg of the large (right) triangle.  The trig function needed to solve for x is the cosine:

                               adjacent side

cos 60 degrees = ----------------------

                                  hypotenuse,

                                       15.56

which becomes (1/2) = ------------

                                            x

Solving this for x, we get:  x = 2(15.56) = 31.12

6 0
4 years ago
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