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miv72 [106K]
3 years ago
15

Suppose that an experiment is repeated four times. A certain event has probability 1/10 in a single repetition of the experiment

.
What is the probability that the event occurs every time in the 4 trials?
What is the probability that it never occurs?
What is the probability that it occurs at least once?
What is the probability that it occurs in the fourth trial only?
Mathematics
2 answers:
Mazyrski [523]3 years ago
8 0
Best thing you can do in order to answer all of this is to use the <span>Bernoulli trials. You can look for it and see if the answers I'm giving you are correct:
</span><span>Probability of occurring 4 times = (1/10)^4
Probability of never occurring = (9/10)^4
Probability that it occurs at least once = 1 - (9/10)^4
Probability that it occurs in the fourth trial only = (9/10)^3 * 1/10
</span>I think this is going to be very helpful
Basile [38]3 years ago
3 0

Answers:

1/10,000

6561/10,000

3439/10,000

729/10,000

Step-by-step explanation:

Plug in (1/10)^4

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-(1+7x)-6(-7-x)=36 what is x equal to
Katyanochek1 [597]

Answer:

x = 5

Step-by-step explanation:

Step 1: Write equation

-(1 + 7x) - 6(-7 - x) = 36

Step 2: Solve for <em>x</em>

  1. Distribute: -1 - 7x + 42 + 6x = 36
  2. Combine like terms: -x + 41 = 36
  3. Subtract 41 on both sides: -x = -5
  4. Divide both sides: x = 5

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

-(1 + 7(5)) - 6(-7 - 5) = 36

-(1 + 35) - 6(-12) = 36

-(36) + 72 = 36

-36 + 72 = 36

36 = 36

5 0
3 years ago
Divide. 15÷−5 Drag and drop the correct number into the box to complete the sentence. The quotient is Response area.
german

Answer:

15÷-5=-3

Step-by-step explanation:

8 0
3 years ago
I need to know the answers
e-lub [12.9K]
Is that your test or homework
6 0
3 years ago
The top of the desk is shaped like a trapezoid the bases of the trapezoid are 26.5 and 30 cm long the area of the desk is 791 CM
kotegsom [21]

Answer:

28 cm

Step-by-step explanation:

Given that :

Area = 791 cm

Base, b1 = 26.5 cm

Base, b2 = 30 cm

Area, A of trapezoid :

A = 1/2 (a + b) h

Where a and b are the bases ;

791 = 1/2(26.5 + 30)h

791 = 0.5(56.5)h

791 = 28.25h

h = 791 / 28.25

h = 28 cm

5 0
3 years ago
Hi, I really need help with this question please, <br><br> dividing x^3+5x^2+x−2 by x + 3
MaRussiya [10]
3x+10x+x-2/x+3
14x-2/x+3
7(2x-1)/x+3
8 0
3 years ago
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