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2 years ago

Did you know that if you smile you can breath.

Mathematics

2 answers:

Afina-wow [57]2 years ago

3 0

Answer:

How do I keep falling for this trick!???

lord [1]2 years ago

3 0

Awwwwwwwwwwww tyyyyy <3

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A box contains 5 red balls, 6 white balls and 9 black balls. Two balls are drawn at

valina [46]

Answer:

$P(Same)=\frac{61}{190}$

Step-by-step explanation:

Given

$Red = 5$

$White = 6$

$Black = 9$

Required

The probability of selecting 2 same colors when the first is not replaced

The total number of ball is:

$Total = 5 + 6 + 9$

$Total = 20$

This is calculated as:

$P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)$

So, we have:

$P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1} + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}$

<em>Note that: 1 is subtracted because it is a probability without replacement</em>

$P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1} + \frac{9}{20} * \frac{9- 1}{20- 1}$

$P(Same)=\frac{5}{20} * \frac{4}{19} + \frac{6}{20} * \frac{5}{19} + \frac{9}{20} * \frac{8}{19}$

$P(Same)=\frac{20}{380} + \frac{30}{380} + \frac{72}{380}$

$P(Same)=\frac{20+30+72}{380}$

$P(Same)=\frac{122}{380}$

$P(Same)=\frac{61}{190}$

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2 years ago

Answer this please. Give a great answer

Flura [38]

Answer:

275

Step-by-step explanation:

I don't know if its correct

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Draw a model to represent the problem

Mazyrski [523]

2 because if you convert the fractions into decimals then divide it that way it will be 2

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3 years ago

$150 per hour is how much per min

SVEN [57.7K]

$2.50

Hope this helps!

May I have brainliest? :D

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What is 5 2/5 subtract 2 1/15?

STatiana [176]

5 2/5 would be converted to 5 6/15. you would then subtract the numerators and the whole numbers, giving you 3 5/15, which simplifies to 3 1/5

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