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BlackZzzverrR [31]
3 years ago
15

A drawer contains 22 brown socks and 22 black socks, all unmatched. A man takes socks out at random in the dark. What is the lea

st number of socks that he must take out to be sure that he has at least two socks of the same color?
Mathematics
1 answer:
AleksAgata [21]3 years ago
5 0

Answer:

3 socks:)

Step-by-step explanation:

He has 22 brown socks and 22 black socks.

He must take 2 socks at least, but he can take different colors, so we have:

1.He takes one sock, let he takes brown socks.

2. He takes one socks more, it can be different color from first socks, so it can be black.

3. He takes one socks more which is black or brown, so we have both color, so he will have two socks with the same color.

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One year Perry had the lowest ERA​ (earned-run average, mean number of runs yielded per nine innings​ pitched) of any male pitch
Blizzard [7]

Answer:

z score Perry z=-1.402

z score Alice z=-1.722

Alice had better year in comparison with Perry.

Step-by-step explanation:

Consider the provided information.

One year Perry had the lowest ERA​ of any male pitcher at his​ school, with an ERA of 3.02. For the​ males, the mean ERA was 4.206 and the standard deviation was 0.846.

To find z score use the formula.

z=\frac{x-\mu}{\sigma}

Here μ=4.206 and σ=0.846

z=\frac{3.02-4.206}{0.846}

z=\frac{-1.186}{0.846}

z=-1.402

Alice had the lowest ERA of any female pitcher at the school with an ERA of 3.16. For the​ females, the mean ERA was 4.519 and the standard deviation was 0.789.

Find the z score

where μ=4.519 and σ=0.789

z=\frac{3.16-4.519 }{0.789}

z=\frac{-1.359}{0.789}

z=-1.722

The Perry had an ERA with a z-score is –1.402. The Alice had an ERA with a z-score is –1.722.

It is clear that the z-score value for Perry is greater than the z-score value for Alice. This indicates that Alice had better year in comparison with Perry.

7 0
2 years ago
What property would justify the following statement? If a = b and b = c, then a = c. Addition Property Reflexive Property Subtra
romanna [79]

Answer:

It would be the transitive property! If you look up "If a = b, and b = c, then a = c" you'd see the transitive property. I hope this helps!

6 0
3 years ago
The bill at a restaurant came to $136.40. The patrons decided to leave a 15% tip. What was the total bill including tip?
lys-0071 [83]

Answer:

156.86

Step-by-step explanation:

136.40 + 15% is 20.46 added to 136.40 is 156.86


4 0
3 years ago
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What is implicit differentiation?
defon

Answer:

The process of finding the derivative of dependent variable in an implicit function by differentiating each term separately by expressing the derivative of the dependent variable as a symbol and by solving the resulting expression for the symbol.


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3 years ago
How do you find the dilation of a triangle?
Oksana_A [137]
Draw the dilation image of the triangle with a center at the origin and a scale factor of two.
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