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taurus [48]
3 years ago
6

What is the probability of getting two heads and two tails in four flips of a fair coin?

Mathematics
1 answer:
jekas [21]3 years ago
3 0
Number of  combinations possible = 4! / 2! 2! =  6

Each of these has probability 1/2*1/2*1/2*1/2  = 1/16

Required probability  = 6  * 1/16  = 3/8
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What's 1394 divided by 36
riadik2000 [5.3K]
The answer would be 38.722222 (the two just keeps repeating)
5 0
3 years ago
Read 2 more answers
How am I supposed to answer this?<br> Pls give answers
alekssr [168]

Answer:

OH YES RECIPROCALS

Step-by-step explanation:

So basically what your gonna do is flip the numbers, for example 1/2 would turn into 2/1, if you need help in the others just comment :)

8 0
2 years ago
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is
Yuri [45]

Answer:

x= 44 ounces y = 66 ounces  

Step-by-step explanation:

Distribution would be an increase to find 80% salt.

Where we use 4/5 = 80 but use here 4/5.

We find 19/20 but just say 95 for solution B =

Let x = the number of ounces of Solution A

Let y = the number of ounces of Solution B

x + y = 110        y = 110 - x

(70x + 95y) = 4/5 x 110

70x + 95y = 88    

70x + 95 y = 88

70x + 95 (88 - x) = 8800 make units equal or for start convert decimalization = same units as 2nd multiplied value.

70x + 8360 - 88x = 8800

-10x - 8360 - 8800 = y

-10x = 440

x = 44 ounces

y = 110- 44

y =  66 ounces  

4 0
3 years ago
Read 2 more answers
Use properties of addition and subtraction to evaluate the expression <br> -42 - 29 - 28
Setler [38]
(-42) (-29) (-28)
-42 - 29 = -71
-71 - 28 = -99

-99 is your answer

hope this helps
7 0
3 years ago
Evaluate the following expressions for x = -4
Vilka [71]

Answer:

-1/16

-1/4

1

-4

16

Step-by-step explanation:

Put x as -4 and solve.

-4^-2 = 1/-4^2 = -1/16

-4^-1 = 1/-4 = -1/4

-4^0 = 1

-4^1 = -4

-4^2 = 16

6 0
3 years ago
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