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3 years ago

9

assume that three students are chosen from 3 freshmen, 5 sophomores, and 3 juniors. What is the probability of selecting 2 fresh

men and 1 junior given that at least one freshman will be selected?

1 answer:

Naily [24]3 years ago

6 0

Forgive me if I am wrong but I am pretty sure it would be 3/10?

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I need help with this please

earnstyle [38]

Answer:

<h2>=9-12+12</h2>

Step-by-step explanation:

<h2>=n²- 4n + 12</h2><h2>=(3)²- 4(3) + 12</h2><h2>=9-12+12</h2>

I don't know if it's correct

5 0

3 years ago

Find the surface area and the volume of the figure <br> Round to the nearest tenth if needed.

elixir [45]

Answer:

See below

Step-by-step explanation:

<u>Surface area:</u>

S = 2(lw + lh + wh) + 2πrh
S = 2(9*4 + 9*5 + 4*5) + 2*3.14*2*3 = 239.7 cm² (rounded)

<u>Volume:</u>

V = lwh + πr²h
V = 9*4*5 + 3.14*2²*3 = 217.7 cm³ (rounded)

4 0

3 years ago

Read 2 more answers

Scott bought a 5lb bag of cookies at the bakery. He ate 2/5 of the bag and his sister ate 2/9 of the bag. What fraction of the b

satela [25.4K]

Answer: Fraction they both eat = $\dfrac{28}{45}$ .

Fraction of bag remains = $\dfrac{17}{45}$

Step-by-step explanation:

Given: Part of cookies eaten by Scott = $\dfrac25$

Part of cookies eaten by sister = $\dfrac{2}{9}$

Fraction they both eat = $\dfrac25+\dfrac29=\dfrac{9\times2+5\times2}{5\times9}$

$=\dfrac{18+10}{45}\\\\=\dfrac{28}{45}$

Fraction of the bag remain = $1-\dfrac{28}{45}=\dfrac{45-28}{45}=\dfrac{17}{45}$

[Taking fraction of whole bag =1]

Hence, Fraction they both eat = $\dfrac{28}{45}$ .

Fraction of bag remains = $\dfrac{17}{45}$

4 0

3 years ago

Hiw ti factorise x*-16

ra1l [238]

Im assuming the problem is x^2-16, which would be factored to (x-4)(x+4)

7 0

3 years ago

What is the difference between the mean and the median of the data set?

Pepsi [2]

As you probably know there is a difference between mean and median -- the mean acts as a measure of the average, and on the other hand median measures the middle number. The median in this is 15 and the mean is also 15.

4 0

3 years ago