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MAXImum [283]
3 years ago
15

If you know the names of the remaining nine students in the spelling​ bee, what is the probability of randomly selecting an orde

r and getting the order that is used in the spelling​ bee? ​p(selecting the correct spelling bee ​order)equals nothing
Mathematics
1 answer:
rjkz [21]3 years ago
8 0
The probability of getting the correct order in the spelling bee is 1 chance in 362,880.

This is a permutation problem. Our goals is to find the total number of ways that the 9 students can be ordered.

For the first spot there are 9 choices, then 8 choices, then 7 choices....

We need to evaluate:
9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 362,880

Another way to write this is: 9!
You might be interested in
Help with quadratic graphs asap!
zlopas [31]

x= -0.25 and 1.25

x = -0.5 and  1.5

x = 0 and 1

x = -0.375 and 1.625

Step-by-step explanation:

Given equation of the curve is

y = 4x^2 -4x-1

(i)

First equation 4x^2 -4x-1 =0

Here y = 0

In  x-axis the value of y = 0

The graph cuts the x-axis at(-0.25,0) and (1.25,0)

So, x= -0.25 and 1.25

(ii)

4x^2 -4x-1 =2

here y = 2

The line y= 2 cuts the curve at (-0.5,2) and (1.5,2)

So, x = -0.5 and  1.5

Given equation of the curve is

y= 3x^2-3x -1

(i)

3x^2-3x +2 =2

\Leftrightarrow  3x^2-3x -1 = -1

Here y = -1

The line y = -1  cuts the curve at (0,-1) and (1,-1)

So x = 0 and 1

(ii)

3x^2-3x -1 =x+1

Here y = x+1

The line y -x =1 cuts the curve at (-0.375,0.5) and (1.625,2).

So x = -0.375 and 1.625

3 0
3 years ago
SomeOne Do This Thank You If u had because if u answered my question u get.................................................... i
jonny [76]

Answer:

1

Step-by-step explanation:

By  gradient, if you mean the "slope" of the linear function, then you have to find two points of the graph and use the "rise over run strategy". Given two coordinates, (x1, y1) and (x2, y2) of a linear function in the form y=mx+b, the slope of the line is (y2-y1)/(x2-x1). This shows the amount of "rise", or the vertical change, and the amount of "run", which is the horizontal change. Rise/Run gives the steepness of the line. The slope can also be modeled by Δy/Δx, which is the change in y over the change in x

Plugging in the given points (0,5) and (-5,0):

(y2-y1)/(x2-x1)= (5-0)/(0-(-5)) = 5/5 = 1

7 0
2 years ago
Please help i will give branliest!!!
Pepsi [2]

Answer:b

Step-by-step explanation:

3.5*5*.5=8.75

5 0
3 years ago
6TH grade math please help AP EX
hjlf

Answer:

I think the 1st one would be 10...

Step-by-step explanation:

Because 12-2=10 and 18-8=10.

If I'm wrong, im super sorry

5 0
3 years ago
List the following in order from least steep to most steep.
klemol [59]

Answer:

  • h(x), f(x), j(x), g(x)

Step-by-step explanation:

<u>Given functions</u>

  • f(x)= -3/4x
  • g(x)= -5x
  • h(x)= 5/7x
  • j(x)= 11/3x

To compare steepness we'll compare absolute values of slopes

The steepness increases as the slope increases

<u>The slopes are </u>

  • 3/4, 5, 5/7, 11/3

<u>Comparing the fractions</u>

  • 3/4 = 21/28, 5/7 = 20/28, so 3/4 > 5/7

And

  • 11/3 < 4  

<u>So the order is </u>

  • 5/7 < 3/4 < 11/3 < 5

<u>As functions, the order is</u>

  • h(x), f(x), j(x), g(x)
5 0
3 years ago
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