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Law Incorporation [45]
3 years ago
9

In a class of 7 students there are 4 that play soccer.

Mathematics
1 answer:
Anton [14]3 years ago
4 0

Answer:

Step-by-step explanation:

The total number of ways to draw 3 students is 7*6*5 = 210

Order does not matter. There are 3 students that don't play soccer.

P(3 don't play soccer) = 3*2 * 1 / 210 = 1/35 = 0.02857

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Mrs. Reeds collects rocks. Each rock in her collection weighs about 4 ounces. Her collection weighs about 12 pounds in all. Abou
frozen [14]

Answer:

48 rocks

Step-by-step explanation:

there are 4 rocks in one pound since each rock weighs 4 ounces so 4 times 12 equals 48

7 0
3 years ago
X+2=0 help thanks this is hard
djyliett [7]
-2+2=0

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8 0
3 years ago
Read 2 more answers
Solve for x. <br><br> 3x/6 + 2 = 8<br><br> x = 3<br> x = 12<br> x = 24
Advocard [28]

\frac{3x}{6}  + 2 = 8  \\  \frac{3x}{6}  = 8 - 2 \\  \frac{3x}{6}  = 6 \\ 3x  = 36 \\ x = 36 \div 3 \\ x = 12
So; the answer is: 12
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3 years ago
I NEED HELP PLEASE PLEASE PLEASE (35 POINTS)
Anna71 [15]

Answer:

a

Step-by-step explanation:

4 0
3 years ago
From past experience, the organization knows that about 20% of all potential donors will agree to give something if contacted by
Veronika [31]

Answer:

Total number of  donor who will give first $ 100 = 100 people  

Step-by-step explanation:

Given that:

Total percentage of people who donate when contact by phone 20%

Percentage of donating people who will give $100 or more = 5% = 0.05

Total number of donor who will give first $ 100 can be calculated as

calculate the percentage of donor who will give first $ 100  

P(X) =  0.05\times 0.20 = 0.01\ percent

\mu_x = \frac{1}{0.01}

so, total number of the donor who will give first $ 100 = 100 people  

3 0
3 years ago
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