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Illusion [34]
3 years ago
10

Find two numbers whose sum is 1 and whose difference is 7.

Mathematics
2 answers:
Sphinxa [80]3 years ago
7 0

Answer:

-3 and 4

Step-by-step explanation:

4-(-3) = 7

4+(-3) = 1

Mrac [35]3 years ago
3 0

68-61 =7

but 7-6 =1

Step-by-step explanation:

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Vilka [71]

Answer:

43.96 or c

Step-by-step explanation: formula is d times pi and that gives you c hope this helps god bless

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3 years ago
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} .

6 0
3 years ago
Help!! Which operation should be used to solve <br> X/3= 15? <br> A= ÷3<br> B= -3<br> C=+3<br> D=x3
Lera25 [3.4K]

Answer: D: X3

Step-by-step explanation:

4 0
3 years ago
Ian has the choice of taking out a 25-year loan for $205,000 at 3.2% interest, compounded monthly, or the same loan at 20 years
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Help please, I don’t know what to do..
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Answer:

d. 6

Step-by-step explanation:

6 0
3 years ago
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