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3 years ago

A group consisting of 6 people is to be selected from eight parents and four teachers.

Mathematics

1 answer:

zvonat [6]3 years ago

4 0

Answer:

9/32 or 0.28125

Step-by-step explanation:

8 parents and 4 teachers

There are 12 possible outcomes.

probability = # of favorable outcomes / # of possible outcomes

Let's do the teachers first.

There are 4 teachers, and we are finding the probability for 3 of them being picked.

Therefore,

P = 3/4

Now let's do the parents.

There are 8 parents, and we want 3.

Therefore,

P = 3/8

Now, we do $\frac{3}{4} *\frac{3}{8} = \frac{9}{32}$

Therefore, the chance of 3 teachers and 3 parents being picked out of 4 teachers and 8 parents is 9/32, or in decimal form 0.28125.

Hope this helped!

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First we have to figure out how much fruit punch Jasmine has.
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kari74 [83]

Answer:

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Step-by-step explanation:

Hi there!

$A=\pi r^2$ where r is the radius of the circle

The radius is equal to half the diameter. Given that the diameter is 18 inches, we know that the radius of the circular plate is 9 inches. Plug this into the equation:

$A=\pi (9)^2\\A=81\pi \\A=254$

Therefore, the area of the plate is approximately 254 inches squared.

If this is not an answer choice, the question may have been asking for the radius of the circle rather than the area.

I hope this helps!

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