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Natalka [10]
3 years ago
6

You select a card at random. Without replacing the card, you select a second card. Find the probability. P(M, then H)

Mathematics
2 answers:
Yuliya22 [10]3 years ago
8 0

The answer would be 2/121 because      P= 0/11 so that is cancelled out                           M= 2/11        H=1/11              

So you take M and multiply it times H and it gives you the answer .

Hope this helped !!

Tamiku [17]3 years ago
5 0

Answer:

The correct option is C.

Step-by-step explanation:

The alphabets written on cards are "MATHEMATICS".

We select first card after that we select second card without replacement.

We have to find the probability of (M, then H)

The total alphabets are 11.

The total number of card of M alphabet is 2. The total number of card of H alphabet is 1.

Probability is defined as

P=\frac{\text{Possible outcomes}}{\text{Total outcomes}

The probability of selecting card of M alphabet is,

P(M)=\frac{2}{11}

Now the total remaining card are 10, because the 1 card is drawn without replacement.

The probability of selecting card of H alphabet is,

P(H)=\frac{1}{10}

So, probability of (M, then H)

P(M\text{, then }H)=P(M)\times P(H)

P(M\text{, then }H)=\frac{2}{11}\times \frac{1}{10}

P(M\text{, then }H)=\frac{2}{110}

P(M\text{, then }H)=\frac{1}{55}

Therefore the probability of (M, then H) is \frac{1}{55}. Option C is correct.

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starting at home, Omar traveled uphill to the gift store for 30 minutes at just 10mph. He then travelled back home along the sam
SashulF [63]

Answer:

average speed for the entire trip is 15 mph

Step-by-step explanation:

Let x be the uphill speed and y be the downhill speed.

We have been given that

Speed of Omar in uphill to reach gift store = x =10 mph

Speed of Omar in downhill to reach his home = y = 30 mph

We know the formula for average speed for the entire trip

\text{Average speed }=\frac{2xy}{x+y}\\\\=\frac{2\times 10\times 30}{10+30}\\\\=\frac{600}{40}\\\\=15

Therefore, average speed is 15 mph


6 0
3 years ago
Read 2 more answers
A bicycle lock has a four-digit code. The possible digits, 0 through 9, cannot be repeated. What is the probability that the loc
kozerog [31]
First let's find the number of the elements in the sample space, that is the total number of codes that can be produced.

The first digit is any of {0, 1, 2...,9}, that is 10 possibilities
the second digit is any of the remaining 9, after having picked one. 
and so on...

so in total there are 10*9*8*7 = 5040 codes.

a. What is the probability that the lock code will begin with 5?

Lets fix the first number as 5. Then there are 9 possibilities for the second digit, 8 for the third on and 7 for the last digit.

Thus, there are 1*9*8*7=504 codes which start with 5.

so 

P(first digit is five)=\frac{n(first -digit- is- 5)}{n(all-codes)}= \frac{1*9*8*7 }{10*9*8*7 }= \frac{1}{10}=0.1

b. <span>What is the probability that the lock code will not contain the number 0? 

from the set {0, 1, 2...., } we exclude 0, and we are left with {1, 2, ...9}

from which we can form in total 9*8*7*6 codes which do not contain 0.

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Answer:

0.1 ; 0.6</span>
4 0
3 years ago
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How many elements are in the set​ {x | x is an even prime​ number, xless than100​}?
maxonik [38]
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8 0
3 years ago
An art gallery curator wants to select four paintings
jasenka [17]

255 different groups of 4 paints can be selected out of the 20 paintings.

<h3>How many groups of four paintings can be chosen?</h3>

If we have a set of N elements, the number of groups of different sets of K elements that we can make out of these N is given by:

C(N, K) = N!/(K!*(N - K)!)

In this case we have a total of 20 paintings, and the curator wants to select 4, then we have:

N = 20

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The number of different combinations of 4 paintings is given by

C(20, 4) = 20!/(4!*16!) = (20*19*18*17)/(4*3*2*1) = 255

This means that 255 different groups of 4 paints can be selected out of the 20 paintings.

If you want to learn more about combinations:

brainly.com/question/11732255

#SPJ1

5 0
1 year ago
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3 years ago
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