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gayaneshka [121]
2 years ago
4

The aquarium has 10 more red fish than blue fish 60 percent of the fish are red, How many blue fish are in the aquarium? Show yo

ur work
Mathematics
1 answer:
Hoochie [10]2 years ago
6 0

Answer:

Step-by-step explanation:

Let the total number of fishes be x

Red fishes = 60% of x = (60/100)*x = 0.60x

Blue fishes = 40% of x = (40/100)*x = 0.40x

0.60x - 0.40x = 10

0.20x = 10

x=\frac{10}{0.2}\\\\=\frac{10*10}{0.2*10}\\\\=\frac{100}{2}\\

x= 50 fishes

Blue fishes = (40/100)*50 = 4*5 = 20 fishes

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muminat

Answer:

The claim is not fair because:

  • Probability of roliing two 6s = Probability of rolling two 3s = 1/36

Step-by-step explanation:

The <em>probaility</em> of an event is defined as the number of favorable outcomes divided by the number of total possible events.

P (event E) = number of outcomes for event E / number of possible events

1. <u>As </u><u>first step</u><u>, you may draw a table to find the </u><u>sample space</u><u> (set of all possible outcomes)</u>.

<u>Sample space</u>

The results of the rolling two dice are summarized in this table:

                    Second roll    1       2       3       4        5      6

First roll

  1                                       (1,1)  (1,2)    (1,3)   (1,4)   (1,5)  (1,6)

  2                                     (2,1)  (2,2)  (2,3)  (2,4)  (2,5)  (2,6)

  3                                     (3,1)  (3,2)  <u>(3,3)</u>   (3,4)  (3,5)  (3,6)

  4                                     (4,1)   (4,2)  (4,3)  (4,4)  (4,5)  (4,6)

  5                                     (5,1)  (5,2)  (5,3)  (5,4)  (5,5)  (5,6)

  6                                     (6,1)  (6,2)  (6,3)  (6,4)  (6,5)  <u>(6,6)</u>

<u></u>

2.<u>Now, in that table, you can observe</u>:

The results (3,3) and (6,6) are highlited.

a) Total number of events: 6 × 6 = 36

b) Nnmber of outcomes for the event rolling two 6s (6,6): 1

c) Number of outcomes for the event rolling two 3s (3,3): 1

3) <u>Next, you can calculate the probabilities:</u>

a) Probability rolling two 6s = 1 / 36

b) Probability of rolling two 3s: 1 / 36

4. <u>Conclusion</u>: the probabilities prove that rolling two 6s is just as likely as rolling two 3s.

7 0
2 years ago
1. When developing an interval estimate for the difference between two sample means, with sample sizes of n1 and n2, A. n1 must
Yuri [45]

Answer:

D. n1 and n2 can be of different sizes

Step-by-step explanation:

When we are trying to develop interval estimate for difference between two populations, we first select two samples from these populations. We get the interval using the required statistic.

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8 0
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X=200/10
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Antoine wants to get a subscription to a local library. There are two libraries, each of which charges a monthly subscription fe
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Answer:

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