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Lera25 [3.4K]
4 years ago
6

A brother and a sister are in the same math class. There are 8 boys and 10 girls in the class. One boy and one girl are randomly

chosen. What is the probability that the brother and sister are chosen? Write your answer as a fraction in simplest form.
Item 5
A brother and a sister are in the same math class. There are 8 boys and 10 girls in the class. One boy and one girl are randomly chosen. What is the probability that the brother and sister are chosen? Write your answer as a fraction in simplest form.
Mathematics
2 answers:
BigorU [14]4 years ago
7 0

Answer:

the probability is 1/80

Step-by-step explanation:

Readmore at : brainly.com/question/3325543

Paul [167]4 years ago
4 0

Answer:

the probability is 1/80

Step-by-step explanation:

Please give brainliest

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<img src="https://tex.z-dn.net/?f=%20%5Csf%20%5Clarge%20%5C%3A%20If%20%20%5C%3A%20y%20%3D%20Sin%20x%20%20%5C%3A%20%2A%20Cos%20%2
DIA [1.3K]

Answer:

  • cos (x) cos (2x) - 2sin(x) sin(2x)

Solution:

(See the solution in the photo)

8 0
2 years ago
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I need help trying to figure this out I think I have and answer but I want to make sure.
yKpoI14uk [10]

Answer:

34

Step-by-step explanation:

The mean is calculated as

mean = \frac{frequency(midpoint)}{frequency}

let x be the missing frequency, then

Total frequency × midpoint

= (16 × 2) + 7x + (20 × 12) + (10 × 17) = 32 + 7x + 240 + 170 = 442 + 7x

Total frequency = 16 + x + 20 + 10 = 46 + x, thus

\frac{242+7x}{46+x} = 8.5 ( cross- multiply )

442 + 7x = 8.5(46 + x)

442 + 7x = 391 + 8.5x ( subtract 8.5x from both sides )

442 - 1.5x = 391 ( subtract 442 from both sides )

- 1.5x = - 51 ( divide both sides by - 1.5 )

x = 34

The missing frequency is 34

3 0
3 years ago
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