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Rina8888 [55]
2 years ago
13

Suppose that a 2 by 10 rectangular grid of seats is filled with people. On the

Mathematics
1 answer:
IrinaVladis [17]2 years ago
4 0

There are 20! number of ways for everyone to do this so that at the end of the move, each seat is taken by exactly one person.

People are seated in a 2 by 10 rectangle grid. All 20 persons stand up from their seats and relocate to an orthogonally neighboring one upon the blowing of a whistle.

Now, we have to find the number of possible ways in which each seat is taken up by exactly one person after the move.

As the number of people is 20 and 20 seats are to filled exactly once.

So, the number of ways = 20!

Learn more about number here:

brainly.com/question/1991469

#SPJ1

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Fill in the blank to complete the equation below__ + 81 = 9(7+9)
Elis [28]

Answer:

63

Step-by-step explanation:

9(7+9) = 63 +81

5 0
3 years ago
Read 2 more answers
Please hurry i need to turn in this homework , help me please !!
julsineya [31]

Answer:

First part:

Set h(t) = 17and solve for t.

-16t²+ 58t + 7= 17

-16t² + 58t - 10 = 0

Solve this quadratic equation for t. You should get 2 positive solutions. The lower value is the time to reach 17 on the way up, and the higher value is the time to reach 17 again, on the way down.

Second part:

Set h(t) = 0 and solve the resulting quadratic equation for t. You should get a negative solution (which you can discard), and a positive solution. The latter is your answer.

7 0
3 years ago
Suppose two different methods are available for eye surgery. The probability that the eye has not recovered in a month is 0.002
antoniya [11.8K]

Answer:

d) 0.4

Step-by-step explanation:

P(Ra) = 0.998

P(Rb) = 0.995

P(A) = 0.4

P(B) = 0.6

The probability that method A was performed, given that the eye was recovered within a month of the surgery, is determined by the probability that the eye recovered within a month with method A (P(A) x P(Ra)),divided by the probability that the eye recovered within a month with either method (P(A) x P(Ra) + P(B) x P(Rb)):

P(A|R)=\frac{P(A) *P(R_A)}{P(A) *P(R_A)+P(B) *P(R_B)}\\P(A|R) = \frac{0.4*0.998}{0.4*0.998+0.6*0.995} \\P(A|R) = 0.40

The probability that method A was performed is 0.40.

8 0
4 years ago
What are the missing values?
Rudiy27

1) f(0) means to find y value when x= 0

x=0, y=2, so f(0) =2


2) f(x) = 0

y=0,x=?

When y=0, x=4


3) f⁻¹(0),

This is an inverse function of f(x),

that means that for f⁻¹, that values of x become y, and values of y become x.

f⁻¹(0)

"0" is y from the graph, when y=0, x=4, so

y=0, f⁻¹(0) = 4


4) f⁻¹(x)=0,

means that on this graph we need x=0, y=2,

so f⁻¹(2)=0,

x=0


For function we had

x=0, y=2

x=4, y=0


For f⁻¹ inverse function we have (x becomes y, and y becomes x)

x=2, y=0

x=0, y=4

6 0
3 years ago
Is this the correct answer
enot [183]

Answer:

It should be correct.

8 0
4 years ago
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