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elixir [45]
4 years ago
6

dawn draws 1 card replaces it and draws another card is it more likely that she draws 2 red cards or 2 face cards?

Mathematics
1 answer:
SVEN [57.7K]4 years ago
4 0
Way:

ok

so from comments
36 face cards
26 red cards

the probablity of drawin 2 face cards (picking, replacing, picking) is (36/52)² or 81/169

the the probablity of drawin 2 red cards (picking, replacing, picking) is (26/52)²=1/4


81/169_1/4
(blank is relation symbol like >, =, or <)
if we use calculator
0.47.._0.25
0.47>0.25
it is more probable to get 2 face cards in a row than 2 red cards (even tho it is more probable to get a mix)
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Answer:

Step by step solution :

STEP1:Equation at the end of step 1

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STEP 2 :

Equation at the end of step2:

(72x4 - (2•7x2)) + 1 = 0

STEP3:Trying to factor by splitting the middle term

 3.1     Factoring  49x4-14x2+1 

The first term is,  49x4  its coefficient is  49 .

The middle term is,  -14x2  its coefficient is  -14 .

The last term, "the constant", is  +1 

Step-1 : Multiply the coefficient of the first term by the constant   49 • 1 = 49 

Step-2 : Find two factors of  49  whose sum equals the coefficient of the middle term, which is   -14 .

     -49   +   -1   =   -50     -7   +   -7   =   -14   That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -7  and  -7 

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Step-4 : Add up the first 2 terms, pulling out like factors :

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              Add up the last 2 terms, pulling out common factors :

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Step-5 : Add up the four terms of step 4 :

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             Which is the desired factorization

Step-by-step explanation:

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3 years ago
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3 0
3 years ago
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Travka [436]
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Subtract 60 from both sides.
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Now check your answer.
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