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Lera25 [3.4K]
3 years ago
5

A pair of coins is tossed. What is the probability of two tails? 1 1/2 1/4

Mathematics
2 answers:
rosijanka [135]3 years ago
8 0
P(Tails) = 1/2
P(2 Tails) = P(Tails) * P(Tails)
P(2 Tails) = 1/2 * 1/2 = 1/4
lozanna [386]3 years ago
3 0
The answer would be
1/4
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Find the sum or difference. Write your answer in simplest form. 2 1/3 + 1 3/4
hammer [34]

Answer:

The Sum is 49/12 (improper), or 4 1/12 (mixed).

The Difference of these 2 fractions would be 2 1/3 - 1 3/4 instead of adding them. The answer is 7/12.

Step-by-step explanation:

I did it by converting the mixed fractions into improper fractions, then making the denominators the same, and adding them together.

4 0
3 years ago
Please help! 25 points
Zinaida [17]

Answer: Look at explanation

Step-by-step explanation:

32 = 2 x 2 x 2 x 2 x 2

27 = 3 x 3 x 3

16 = 2 x 2 x 2 x 2

No as 32 can be broken down to 8 and 4 and not just pime and not prime

7 0
2 years ago
A fair 66-sided die is rolled 77 times and the resulting sequence of 77 numbers is recorded. A) How many different sequences are
Stella [2.4K]

Answer: A. 279936 sequences.

B. 2187 sequence.

C. 7776 sequence.

D. 46656 sequence

E. 64 sequence.

Step-by-step explanation:

Given data:

A 6 sided fair die

No of time rolled = 7

Resulting sequence recorded = 7.

Solution.

A.) No of different possible sequence

= 6^7

= 279936 sequences.

B.) Sequence consisting of only even number

= there are 3 even numbers between 1 and 7 ( 2,4,6).

= 3^7

= 2187 sequence.

C.) possible sequences are when the first, third, and fourth numbers must be the same.

= 6* 6 ^n

where n = 4

= 6*6^4

= 7776 sequence.

D.) sequence when every number is different.

There are 6 sides of a die, so when every number is different it is.

= 6^6

= 46656 sequence

E.) sequence when atleast there are two numbers that are the same.

= 2^6

= 64 sequence.

3 0
3 years ago
Please help!!!!<br> <img src="https://tex.z-dn.net/?f=%28%5Cpi%20%5Csqrt%2081%20%5Cfrac%7B%5Csqrt%5B3%5D%7B8%7D%7D%7B2%7D%20%29%
11111nata11111 [884]

Step-by-step explanation:

(9\pi \frac{2}{2}  )\div 3\pi \\

\frac{9\pi}{3\pi}  \\

3\pi

3π is the answer

7 0
2 years ago
^Answer needed ASAP! <br> Solve x2-6x=-5 by completing the square. show ALL work
ankoles [38]

Have a nice day, be safe and healthy :)

Hope this helped

<u>formula: </u>

(a+b)^2

= a^2+2ab+b^2

Here, we have x^2  (as in a^2)

and -6x (as in 2ab), which, we're missing the b^2

(I'm not really sure how to describe this but bare with me)

-6/2 (-6 is from the -6x) = -3 (the b)

-3^2 = -3*-3 which is equal to 9 (positive 9)

Writing it out -

x^2-6x+9 = -5

- Addition of inequality -

Since we add 9 to the left side, we have to add 9 to the right side; which gives us:

x^2-6x+9=4

Next, lets put the x^2-6x+9 as in (a+b)^2:

(x-3)^2 = 4

<em>Then let's do the square root of equality (square rooting both sides) :</em>

<u>x-3 = 2</u>

<em>Finally lets add 3 to both sides</em>

<u>x = 5</u>

THE ANSWER IS <u><em>x=5</em></u>

<u><em></em></u>

Have a nice day, be safe + healthy - Hope this helped

8 0
3 years ago
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