3 years ago

Please write out the expression step by step to show why this is true

Mathematics

1 answer:

Andreyy893 years ago

8 0

(2x+3y)4 hope this helps

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3 years ago

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3 years ago

In a survey at a local college, 18% of students reported that they do not own a mobile device with internet capabilities. if 20

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The probability that randomly selected student doesn't own a mobile device with internet capabilities is $p=0.18$ and the probability that randomly selected student owns a mobile device with internet capabilities is $q=1-p=1-0.18=0.82.$

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$Pr=C_{20}^0p^0q^{20}+C_{20}^1p^1q^{19}+C_{20}^2p^2q^{18}+C_{20}^3p^3q^{17}+C_{20}^4p^4q^{16}+C_{20}^5p^5q^{15}=q^{20}+20pq^{19}+190p^2q^{18}+1,140p^3q^{17}+4,875p^4q^{16}+15,504p^5q^{15}\approx 0.6405021423\approx 0.64.$