25% of 584 is 146. If you meant to say "25% off of the dealer's cost", the answer would be $438, since you're finding what 25% of the original price is (146) and subtracting it from the original price. The equation would be 584 - 146 = 438. I hope this helped <3

5 0

4 years ago

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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

What is the slope of the line that goes through the points (7,10) and (3,-3)

PilotLPTM [1.2K]

Ypu would subtract Y from the other points Y
$- 3 - 10 = - 13$
Then you would subtract X from the ither points X.
$3 - 7 = - 4$
Then you would put the Y value over the X
$\frac{ - 13}{ - 4}$
Then simiplify
$\frac{13}{4}$

7 0

3 years ago

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