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shutvik [7]
3 years ago
6

Brian flips a fair coin 3 times . What is the probability of getting 3 tails?

Mathematics
2 answers:
Veronika [31]3 years ago
7 0

Answer:

1/8

Step-by-step explanation:

Firstly, we need to rule out all the possible outcomes

[HHH],  [HHT],  [HTT],  [TTT],  [TTH],  [THH],  [HTH],  [THT]

Since there are 8 possible outcomes and only one of the possible outcomes give us 3 tails, 1 is upon 8 ( 1 / 8 )

Minchanka [31]3 years ago
3 0

Answer:

1/9 is the probability

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Answer:

See below for answers and explanations

Step-by-step explanation:

<u>Part A</u>

The average rate of change of a function over the interval [a,b] is equal to \frac{f(b)-f(a)}{b-a}, hence:

\frac{f(b)-f(a)}{b-a}\\\\\frac{f(9)-f(5)}{9-5}\\\\\frac{14-(-4)}{9-5}\\ \\\frac{14+4}{4}\\ \\\frac{18}{4}\\ \\\frac{9}{2}

Therefore, the average rate of change of f(x) over the interval [5,9] is \frac{9}{2}.

<u>Part B</u>

Do the same thing as in Part A:

\frac{f(b)-f(a)}{b-a}\\ \\\frac{f(1)-f(0.25)}{1-0.25}\\ \\\frac{2-5}{0.75}\\ \\\frac{-3}{0.75}\\ \\-4

Therefore, the average rate of change of g(x) over the interval [0.25,1] is -4.

<u>Part C</u>

To interpret our answer from Part B in terms of the real world it represents, we say that between 0.25 seconds and 1 second, the ball falls at a rate of 4 feet per second (since our average rate of change is negative).

5 0
2 years ago
Jennifer is saving 1/8 of her salary to buy a phone. Find her weekly pay is she has saved $65
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Let her monthly salary be x

1/8x = $65

x = $65 × 8 = $520

Her weekly pay is $520 ÷ 4 = $130

5 0
3 years ago
What value of x makes the equation true?
NNADVOKAT [17]

x= -4 because 1.4 times -4=- 5.6 and 2.6 times -4=-10.4 and when we add to numbers postive or negative numbers it stays positive or negative depnding on the problem and 10.4 + 5.6 + 16 however becuase both were negative the answers stays negative making the answer _ 16 and it says 1.4x+2.6x=-16 so the correct answer is x= -4

5 0
2 years ago
Read 2 more answers
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Answer:

x > 2

Step-by-step explanation:

y < 4x +3

y > -2x - 9

-2x -9 < 4x +3

-6x < -12

IN CASES WHERE YOU DIVIDE A NEGATIVE NUMBER,DON'T FORGET TO CHANGE THE SIGN !!!

x > 2

4 0
3 years ago
Booneville Theater sold 1,330 tickets to Shakespearean plays last season. This season, the
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1862 tickets.

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1330 increase 40% =

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