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Lana71 [14]
3 years ago
14

Question 21 (4 points)

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0

Step-by-step explanation:

There are ₉C₂ ways to choose 2 students from 9.

There are ₁₅C₂ ways to choose 2 teachers from 15.

There are ₂₄C₄ ways to choose 4 people from 24.

Therefore, the probability is:

P = ₉C₂ ₁₅C₂ / ₂₄C₄

P = 36 × 105 / 10626

P ≈ 0.356

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You add 5.6+5.6+2.1+2.1 to get the perimeter.
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3 years ago
Raphael paid $ 160$160 for a camera during a 75 %75% off sale. What was the​ camera's regular​ price?
Kay [80]
So paid160


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2 years ago
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Nezavi [6.7K]

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Step-by-step explanation:

8 0
3 years ago
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Help me please and thank you !
serg [7]
The answer is C. Why? Well, see below!

A would be incorrect because the problem is asking what the area of the stamp would be. In order to find area, we multiply length and width by each other. The given equation we initially had shows division, and would therefore be incorrect. B would be incorrect because although the equation has the correct evaluation symbol, the formula for identifying length would be L = A / W, which means length equals area divided by width. Because the area is 1/4 in this problem, the expression used for evaluation would be 1/4 divided by 1/5. D is incorrect because, like B, the evaluation expression would be 1/4 divided by 1/5.

Your final answer: Because C is the only problem that gives us a corresponding expression to the initial expression, C is the correct answer. If you need extra help, let me know and I will gladly assist you.
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Step-by-step explanation:

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