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2 years ago

Can any one help with this math problem: −1/2−(−5/9) I am a little confused

Mathematics

2 answers:

blondinia [14]2 years ago

8 0

Hope this will help u.....

vichka [17]2 years ago

3 0

Answer:

1/18

Step-by-step explanation:

-(-5/9) would turn into a positive 5/9. It cancels its own negative out.

The problem then turns to -1/2+5/9. Find the least common denominator and then combine.

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A poker hand consisting of 9 cards is dealt from a standard deck of 52 cards. Find the probability that the hand contains exactl

Andrew [12]

Answer: $\dfrac{^{12}C_{6}\times^{40}C_3}{^{52}C_9}$ or $\dfrac{228}{91885}$ .

Step-by-step explanation:

Given : A poker hand consisting of 9 cards is dealt from a standard deck of 52 cards.

The total number of cards in a deck 52

Number of faces cards in a deck = 12

Number of cards not face cards = 40

The total number of combinations of drawing 9 cards out of 52 cards = $^{52}C_9$

Now , the combination of 9 cards such that exactly 6 of them are face cards = $^{12}C_{6}\times^{40}C_3$

Now , the probability that the hand contains exactly 6 face cards will be :-

$\dfrac{^{12}C_{6}\times^{40}C_3}{^{52}C_9}$

$=\dfrac{\dfrac{12!}{6!6!}\times\dfrac{40!}{3!37!}}{\dfrac{52!}{9!\times43!}}\ \ [\because\ ^nC_r=\dfrac{n!}{r!(n-r)!}]\\\\=\dfrac{228}{91885}$

Hence, the probability that the hand contains exactly 6 face cards. is $\dfrac{228}{91885}$ .

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3 years ago

Question Progress Decrease £250 by 15%

balandron [24]

Answer:

215 i guess

Step-by-step explanation:

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2 years ago

Andy and Jordan's are playing a game that involves tossing two dice numbered one to six, and recording the sum of the two how ma

Ne4ueva [31]

Answer:

there are 11 diffrent sums and the greatest sum is 12

Step-by-step explanation:

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2 years ago

Mr. Al bought two boxes of candy with each box having 3 pieces inside of it. How many pieces candy did he have total?

Vladimir79 [104]

Answer:

Step-by-step explanation:

3 x 2 = 6

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4 0

3 years ago

Read 2 more answers

the midpoint of AB is point P at (-16,6) if point A is at (-10,8) what are the coordinates of point B?

max2010maxim [7]

Answer:

Denote B(x, y), we have:

-10 + x = 2 x (-16) => x = -22

8 + y = 2 x 6 => y = 4

=> B(-22, 4)

Hope this helps!

8 0

3 years ago