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Alex_Xolod [135]
2 years ago
5

At a convention of monsters, 2/5 have no horns, 1/7 have one horn, 1/3 have two horns, and the remaining 26 have three or more h

orns. How many monsters are attending the convention

Mathematics
2 answers:
svetlana [45]2 years ago
7 0
I hope this helps.....

Papessa [141]2 years ago
4 0
Let x be the number of monsters:
a) number of 0 horn = 2x/5
b) number of 1 horn = x/7
c) number of 2 horns = x/3

The 26 remaining monsters are:

(x) - (2x/5 + x/7 + x/3) = 26, solve for x,

x - 2x/5 - x/7 - x/3 = 26, reduce to same denominator:(105)

x - 92x/105 = 2730/105

and x = 210 monsters
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2 years ago
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 1.Since 5 is less than 8, borrow 1 from the next column to make 15.



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A polling organization asked a nation-wide random sample of 1600 new brides (those who got married in the past 2 years) the foll
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Answer:

It has millions of tickets. On each ticket is written a number a dollar amount. The exact average and SD are unknown but are estimated from the sample to be $20,000 and $5,000 respectively.

Step-by-step explanation:

Given that:

sample size n = 1600

sample mean \overline x = 20000

standard deviation = 5000

The objective is to choose from the given option about what most closely resembles the relevant box model.

The correct answer is:

It has millions of tickets. On each ticket is written a number a dollar amount. The exact average and SD are unknown but are estimated from the sample to be $20,000 and $5,000 respectively.

However, if draws are made without replacement, the best estimate of the average amount for the bride will be $20,000

Similarly, the standard error for the sample mean = \dfrac{s}{\sqrt{n}}

= \dfrac{5000}{\sqrt{1600}}

= \dfrac{5000}{40}}

the standard error for the sample mean = 125

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Chris has a large collection of hockey cards and wants to get rid of some of his hockey cards he gives 2 cars away on day 1,4 ca
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Answer:

I'm not sure for which answer you're asking for so I'll give you all of them.  On the tenth day, Chris will give away 1024 cards.

Step-by-step explanation:

On the fourth day he will give away 16, on the fifth day 32, on the sixth day 64, on the seventh say 132, on the eighth day 264, on the ninth day 528, and on the tenth day 1024

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In a class of 160 students, 90 are taking math, 78 are taking science, and 62 are taking both math and science. What is the prob
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Add all the numbers together and the difference is the answer which is 44%

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