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Brilliant_brown [7]
3 years ago
5

Help me do this and you will get 100 points

Mathematics
2 answers:
faltersainse [42]3 years ago
7 0

(b) To have no winner within the first 6 tosses means that there must be 3 tails and 3 heads tossed. So we count how many ways can that happen. The number of ways to choose 3 heads (or tails, doesn't matter) from 6 tosses is

{6\choose 3}=\frac{6\cdot 5\cdot 4}{3\cdot 2} = 20

so 20 ways winthin the 6 tosses. but the question was "how many ways among the 128 of 7 tosses" so we need to add the 7th toss by multiplying by another 2 possibilities for the outcome of the 7th toss, giving us the answer: among the 128 there are 40 games that are tied and need the 7th toss.

(c) The probability is the number of tied games (after 6 tosses) divided by the total number of possible configurations among 6 tosses:

P(\mbox{"7th toss needed"}) = \frac{20}{64} = \frac{5}{16}

velikii [3]3 years ago
7 0

Answer:

b

Step-by-step explanation:

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Which expression is equivalent to m + 3m + 3(m - 1)
Lyrx [107]

Answer:

7m-3

Step-by-step explanation:

first, distribute

m+3m+3m-3

then, combine all like terms

m+6m-3

7m-3

i hope this helps! have a nice day!

5 0
3 years ago
What is the value of the number 0 in 9.05?
photoshop1234 [79]

Answer:

Tenths

Step-by-step explanation:

After the decimal there is each a place value.

The first number that comes after a decimal is the ones place, next is the tenth, and hundredths, and so on.

4 0
4 years ago
Doug's puppy weighed 22 pounds one day
Assoli18 [71]
I believe the answer is 5%
7 0
4 years ago
Please help me do this question
bija089 [108]

Answer:

I would say three person(s).

4 0
3 years ago
Read 2 more answers
100 points+Brainliest for correct answer
goblinko [34]

Answer:

The electron moved down to an energy level and has an energy of

10.92 \times 10^{-19} \textsf{J}

Step-by-step explanation:

\textsf{initial energy level of electron}= 16.32 \times 10^{-19} \textsf{J}

\triangle E =\textsf{energy released}= 5.4 \times 10^{-19} \textsf{J}

A positive energy change means that the electron absorbs energy, while a negative energy change implies a release of energy from the electron.

Therefore, when an electron absorbs energy, the electron moves up to higher energy levels, and when an electron releases energy, it moves to lower energy levels.

\triangle E=E_2-E_1

\implies 5.4 \times 10^{-19} = 16.32 \times 10^{-19} -E_1

\implies E_1= 16.32 \times 10^{-19} -5.4 \times 10^{-19}

\implies E_1= 10.92 \times 10^{-19}

<u>Answer</u>:

The electron moved down to an energy level and has an energy of

10.92 \times 10^{-19} \textsf{J}

6 0
2 years ago
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