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EleoNora [17]
3 years ago
7

What's the probability of getting at least k heads in n coin flips?

Mathematics
1 answer:
telo118 [61]3 years ago
6 0
Half of n time k = 1/2 n * k
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Factor the expression completely
Anastaziya [24]
25c - 5

Simplify all of the answer choices & see which one is correct.

a) 5(5c - 1)

25c - 5

A) IS CORRECT.

b) 5(20c + 1)

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B IS INCORRECT.

c) 5(5c)

25c

C IS INCORRECT.

d) 5(c -1 )

5c - 5

D IS INCORRECT.

Therefore, the correct answer is a) 5(5c - 1)

~Hope I helped!~
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3 years ago
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vazorg [7]

Answer:

19 for each one

Step-by-step explanation:

Divide 57 by 3

3 0
3 years ago
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B is a number larger than 1
Ulleksa [173]
B is greater than 1, so B>1
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3 years ago
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In a different plan for area​ codes, the first digit could be any number from 2 through 5​, the second digit was either 2, 3, 4,
GrogVix [38]

Answer:

Step-by-step explanation:

First digit 2,3,4,5 = 4 different digits.

Second digit 2,3,4,5 = 4 different digits.

Third digit = 1,2,3,6,7,9 = 6 different digits.

Total number of possibilities = 4*4*6 = 96

3 0
3 years ago
What is the value of 4x−8(2−x) , when x=−1/4
slava [35]

Answer:

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Step-by-step explanation:

4x-8(2-x)

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12x-16

12(-1/4)-16

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-19

3 0
3 years ago
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