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4vir4ik [10]
3 years ago
11

3a + 2b = 17, b = 4a - 30

Mathematics
1 answer:
Agata [3.3K]3 years ago
8 0
Hope it helps !!!!!!

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The sum of two numbers is 54 . the smaller number is 12 less than the larger number. what are the numbers?
Andreas93 [3]
<span>Let x=one number and x+12= the other number.  Together the numbers=54.  Set up the equation:  x+x+12=54;  Combine the variables;  2x+12=54;  Subtract 12 from both sides of the equation;  2x=42; Divide both sides of the equation by 2;  x=21 is one number and 21+12=33 is the other number.  Check:  2(21) +12=54;  42+12=54;  54=54.</span>
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Assume you are working with a standard deck of 52 cards. There are 13 cards (2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king, and
NemiM [27]

Answer:

P(9\cup queen)=\frac{2}{13}

Step-by-step explanation:

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Total cards of Queen=4(1\ club,1\ diamond,1\ heart,1\ spades)

Total number of elements in 9\cup Queen=8

P(9\cup queen)=\frac{elements\ in\ 9\cup queen}{Total\ number\ of\ elements}\\\\P(9\cup queen)=\frac{8}{52}=\frac{2}{13}

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Answer:

pi x radius x 2 x height of the cylinder.

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