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umka21 [38]
4 years ago
11

Flip a fair two sided coin 4 times. Find the probability the first or last flip is a tail.

Mathematics
1 answer:
insens350 [35]4 years ago
8 0

Answer:

<em>1/4</em>

Step-by-step explanation:

Flip a fair two sided coin 4 times, the probability the first or last flip is a tail is

P = (1/2) x 1 x 1 x (1/2) = 1/4

(The probability of getting tail in first flip = 1/2, in the 2nd and 3rd flip, tail and head are both accepted, the probability of getting tail in last flip = 1/2)

Hope this helps!

You might be interested in
18. El equipo de docentes del Área de Formación Humanística decide repartir 195 ejemplares de libros de lectura a 4 estudiantes
irina [24]

Answer:

Each of the students absent for 1, 2, 4 and 5 days get 57, 53, 45 and 40 copies of the the reading books respectively.

Step-by-step explanation:

English Translation

The team of teachers from the Humanistic Training Area decides to distribute 195 copies of reading books to 4 students previously classified on their own merits. But the distribution will be made taking into account absences from classes during the first cycle. How many books does each student receive if their absences have been 1; two; 4 and 5 days, respectively?

Solution

Because the more the number of days absent, the less the number of books each of the 4 students deserve, we have to employ an elaborate scheme.

If 195 copies are distributed equally between 4 People, each person gets 48.75 copies of the books.

Now, if we add another 48.75 copies of books to the total number of books, each person gets 60.9375 books.

But, we can then divide 48.75 extra books on top according to the number of days absent and subtract each person's number from the assumed 60.9375 books, with an extra 48.75 books.

Total number of days absent = 1 + 2 + 4 +5 = 12

(48.75/12) = -4.0625 copies for each absent day.

The student with only 1 absent day gets 60.9375 - 4.0625 = 56.875 copies = 57 copies

The student with 2 absent days, gets = 60.9375 - (2×4.0625) = 52.8125 copies = 53 copies

The student with 4 absent days, gets = 60.9375 - (4×4.0625) = 44.6875 copies = 45 copies

The student with 5 absent days, gets = 60.9375 - (5×4.0625) = 40.425 copies = 40 copies

Hence, each of the students absent for 1, 2, 4 and 5 days get 57, 53, 45 and 40 copies of the the reading books respectively.

Hope this Helps!!!

6 0
3 years ago
Express cos I as a fraction in simplest terms.​
Serga [27]

Answer:

Solution given

Cos I=adjacent/hypotenuse=16/34

<u>8</u><u>/</u><u>1</u><u>7</u><u> </u><u>is</u><u> </u><u>a</u><u> </u><u>required</u><u> </u><u>answer</u><u>.</u>

4 0
3 years ago
) What number makes the equation true?<br> -5+__=7 1/3
Vilka [71]
-5 + x = 7 1/3

X = 7 1/3 + 5

X = 12 1/3
8 0
3 years ago
Read 2 more answers
Factor the polynomial: – x3 - 4x2 - 5x
Alinara [238K]

Answer:

-x3-4x2-5x=-x(x^2+4x+5)

Step-by-step explanation:

we are given the polynomial as

-x3-4x2-5x

here we can see that the GCF of -x^3 , -4x^2 and -5x is

-x

Hence we take it outside the bracket

-x(x^2+4x+5)

The polynomial within the bracket x^2+4x+5 can not be factorized further , hence this would be our final answer.

3 0
3 years ago
When someone pays with a money order where does the money order come from
Artemon [7]
It is deposited out of your banking account 
4 0
3 years ago
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