First you look at the chart and see that a container of paint is $2.72 next you multiply 2.72 by 8 not 7 because Susan AND her seven friends and get $21.76.

4 0

3 years ago

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Thirteen is 4 more than one-fifth of a number

Lady_Fox [76]

Answer:

Step-by-step explanation:

4 0

3 years ago

The probability a person is infected by a certain cold virus is 0.2. If a random sample of 12 people is taken, what is the proba

mezya [45]

Answer:

Step-by-step explanation:

It is given that The probability a person is infected by a certain cold virus is 0.2 that is p=0.2, then q=1-0.2=0.8.

Now, we have to find the probability that at least one person will be affected by the cold virus, that is P(x>1).

P(x>1)=1-(P(x=0)+P(x=1))

= $1-(nc_{x}p^xq^{n-x}+nc_{x}p^xq^{n-x})$

= $1-(12c_{0}p^0q^{12}+12c_{1}p^1q^{11})$

= $1-((0.8)^{12} +12(0.2)(0.8)^{11})$

= $1-(0.8+12(0.2))(0.8)^{11}$

= $1-(0.8+2.4)(0.0858)$

= $1-(3.2)(0.0858)$

= $1-0.274$

= $0.726$

Thus, probability that at least one person will be affected by the cold virus will be=0.726.

3 0

3 years ago

How much of each ingredient will Mrs. Roberts need in order to make 200 servings? Show or explain the steps you used to answer t

vitfil [10]

Pretzels:2×200=400 200×1/2=100 100+400=500cups
Dry Cereal: 4×200=800 200×1/2=100 800+100=900cups
Peanuts:2×200=400 200×1/4=50 400+50=450cups
Raisins:200×3/4=150cups

4 0

3 years ago