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Vedmedyk [2.9K]
3 years ago
8

Simplify (5-7 O A 1 / 1 O B. 52 O C. O D. 52

Mathematics
1 answer:
Lilit [14]3 years ago
5 0
I don’t know the answer sorry
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From experience, an airline knows that only 80% of the passengers booked for a certain flight actually show up. If 9 passengers
Olenka [21]

Answer:  0.74

Step-by-step explanation:

Given : The probability that the passengers booked for a certain flight actually show up : p=0.80

The number of passengers are randomly selected : n= 9

Binomial probability formula to find the probability of getting success in x trial :-

P(x)=^nC_xp^x(1-p)^{n-x}

Then , the probability that more than 6 of them show up will be :-

P(x>6)=P(7)+P(8)+P(9)\\\\=^9C_7(0.8)^7(0.2)^{2}+^9C_8(0.8)^8(0.2)^{1}+^9C_9(0.8)^9(0.2)^{0}\\\\=\dfrac{9!}{7!(9-7)!}(0.8)^7(0.2)^{2}+(9)(0.8)^8(0.2)+(1)(0.8)^9\approx0.3020+0.3020+0.1342=0.7382\approx0.74

Hence, the probability that more than 6 of them show up = 0.74

7 0
3 years ago
CAN SOMEONE PLEASE HELP ME SOLVE THESE ASAP
Mariulka [41]

so for the 1st one triangle is 8

diamond is 3

and star is 11

the second one star is 5

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and triangle is 2 again

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15 people received an email and sent it to 3 different friends each, who in turn sent it to 2 new people. What percent of the to
Anettt [7]
15 or 80 percent not real sure
3 0
3 years ago
A team is selling discount cards as a fundraiser. The table shows the number of cards sold and the remaining amount of money nee
Lapatulllka [165]

the correct answer is negative

4 0
3 years ago
Read 2 more answers
Find the value of the variable such that the value of 5−a is 20 greater than the value of 6a−1
ryzh [129]
<h3>Answer:</h3>

a = -2

<h3>Explanation:</h3>

We want (5-a) to be 20 more than (6a-1). Then we can write ...

... (5-a) = (6a-1) +20

If we add (a-19) to both sides, we get

... -14 = 7a

... -2 = a . . . . . divide by 7

_____

<em>Comment on the graph</em>

In the attached, we use the variable x, because this graphing calculator likes variables named x and y. We graph each expression and find the place where they both have the same value for the same value of x (the point of intersection). The value of the variable x at that point is -2, the solution we seek.

5 0
2 years ago
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