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Tasya [4]
3 years ago
6

1. 12x^2 +2xy

Mathematics
1 answer:
brilliants [131]3 years ago
4 0

Answer:

1. 12x^2 +2xy

Step-by-step explanation:

1. 12x^2 +2xy

2. 21ab^2 +35ab

3. w^2+15w+ 14

4. m^2-12m+20

5. 2k^2+5k-3

6. -r^2-5r-6

7. 8y^2+26y+15

8. -2d^2-7d-5

9. (h+6)(h-4)=0

10. s^2-7s+12=0

11. -2d^2-7d-5

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You are dealt two cards successfuly without replacement from a shuffled deck of 52 playing card. Find the probability that first
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The simplified expression is (\frac{4}{663})

Step-by-step explanation:

Here, the total number of cards in a given deck = 52

let E : Event of drawing a first card which is King

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So, P(E) = \frac{\textrm{The total number of king}}{\textrm{The total number of cards}} = \frac{4}{52}  = (\frac{1}{13} )

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So, P(K) = \frac{\textrm{The total number of queen}}{\textrm{The total number of cards}} = (\frac{4}{51}  )

Now, the combined probability of picking first card as king and second as queen  = P(E) x P(K)  = (\frac{1}{13}) \times(\frac{4}{51}) = (\frac{4}{663} )

Hence, the simplified expression is (\frac{4}{663})

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2 years ago
A jar contains 18 red marbles 14 green marbels and 20 blue marbles a marble was selected at random the color was recorded and th
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The "relative frequency" is

         (number of times a blue marble came out)
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-- The relative frequency of green was  (18/60)  =  30 % .
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-- The relative frequency of red was  (22/60)  =  (36 and 2/3) % .
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Are the ratios of the number of people to the number of rollercoaster cars in a proportional relationship? Explain your reasonin
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Answer:

the answer will be 366:81

Step-by-step explanation:

you will find value of ratio 3:18

=6

then divide 366:61

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3 years ago
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