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Lisa [10]
2 years ago
7

Mario, Yoshi, and Toadette play a game of "nonconformity": They each choose rock, paper, or scissors. If two of the three people

choose the same symbol, and the third person chooses a different symbol, then the one who chose the different symbol wins. Otherwise, no one wins. If they play 4 rounds of this game, all choosing their symbols at random, what's the probability that nobody wins any of the 4 games
Mathematics
1 answer:
andrey2020 [161]2 years ago
3 0

Step-by-step explanation: Hi!

well, the only case where someone wins is if two of them chose the same thing, and the other chose one of the two remaining possibilities.

an useful way of starting this is calculated al the possible combinations of rock, paper and scissors.

we have 3 persons and 3 options, ence the total number of permutations is 3*3*3 = 27

So, the cases where none wins are:

1) the 3 chose the same thing:  there are 3 combinations here, one for each option

2) the 3 chose a different thing: here you think, the first one has 3 possibilities, then the second one must choose a different option, so has 2, and the third one only has 1 remaining option.  so you have 6 combinations.

so there are 6 + 3 = 9 combinations where no one wins, if we want to se the probability, we compute 9/27 = 1/3 = 0.33%.

But the problem ask for it to happen 4 times in a row, so you will have 0.33*0.33*0.33*0.33 = 1/81 chances that this happens

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What is the quotient (3x4 – 4x2 + 8x – 1) ÷ (x – 2) brainly
Karolina [17]

To find our quotient we are going to perform long division.

Long division step by step:

Step 1. Write the polynomial (dividend) in descending order (from highest to least exponent). If you encounter a missing term, use zero to fill the space of the term in the descending sequence.

Notice that even tough our polynomial is written in descending form, x^3 is missing, so we are going to use 0x^3 to fill the gap:

3x^4-4x^2+8x-1

3x^4+0x^3-4x^2+8x-1

Step 2. Divide the first term of the polynomial (dividend) by the first term of the divisor.

In our case the first term of the dividend is 3x^4 and the first term of the divisor is x, so \frac{3x^4}{x} =3x^3. Notice that 3x^3 is the first term of the quotient.

Step 3. Multiply the first term of the quotient by the terms of the divisor and subtract them from the respective term of the dividend.

The first term of our quotient (from the previous step) is 3x^3 and the divisor is (x-1), so 3x^3(x-2)=3x^4-6x^3. Now, we are going to subtract them from the respective term (the term with the same power) of the dividend. The respective terms of the dividend are 3x^4 and 0x^3, so 3x^4-3x^4=0 and 0x^3-(-6x^3)=0x^3+6x^3=6x^3

Step 4. Bring down the next term in the dividend and repeat the process for the remaining terms.

After finish the process (check the attached picture), we can conclude that the quotient of 3x^4-4x^2+8x-1 ÷ (x-2) is 3x^3+6x^2+8x+24 with a remainder of 47, or in a different notation: 3x^3+6x^2+8x+24+\frac{47}{x-2}

7 0
2 years ago
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The cafe where you work just ran out of coffee, and you are at the store to buy 112 pounds of coffee. You have put a can with 34
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Answer:

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The total you are buying is 112 pounds.  The can you have picked up is 34 pounds; this leaves

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2 years ago
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Answer:

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7 0
2 years ago
In △ABC, m∠A=15 °, a=10 , and b=11 . Find c to the nearest tenth.
pshichka [43]

Answer:

The answer is:

\bold{c\approx 20.2\ units}

Step-by-step explanation:

Given:

In △ABC:

m∠A=15°

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b=11

To find:

c = ?

Solution:

We can use cosine rule here to find the value of third side c.

Formula for cosine rule:

cos A = \dfrac{b^{2}+c^{2}-a^{2}}{2bc}

Where  

a is the side opposite to \angle A

b is the side opposite to \angle B

c is the side opposite to \angle C

Putting all the values.

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The answer is:

\bold{c\approx 20.2\ units}

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