Four students are called to sit in four chairs on

Mathematics

1 answer:

bekas [8.4K]3 years ago

8 0

There is a 50/50 chance Bob and Wanda will sit next to each other.

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What is the area of this triangle? A=bh2

Dmitry_Shevchenko [17]

The area of a triangle formal is base times height divided by 2. So 9x 12 which equals 108 then you divide that by 2 which equals 54 and the unit is cm^2

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3 years ago

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A girl has 18 eggs she uses half them uses one third of what’s left .afther what’s left she makes an omlet for some cookies.then

gizmo_the_mogwai [7]

Answer: 3

Explanation:
She has 18 and uses half, 18/2=9
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2 years ago

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:

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