3 years ago

X^2-6x=6 solve by completing the square

Mathematics

1 answer:

Ivanshal [37]3 years ago

7 0

Hi!

The answer is x=3± $\sqrt{15}$

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In a recent survey, 64 % of the community favored building a police substation in their neighborhood. If 14 citizens are chosen,

kozerog [31]

Answer: 0.1840

Step-by-step explanation:

The binomial probability formula :-

$P(X)=^nC_x\ p^x(1-p)^{n-x}$ , here n is the number total of trials , p is the probability of getting success in each trial and P(x) is the probability of getting success in x trial.

Given : The probability of the community favored building a police substation in their neighborhood = 0.64

If 14 citizens are chosen, then the probability that exactly 8 of them favor the building of the police substation will be :-

$P(8)={14}^C_{8}\ (0.64)^{8}(1-0.64)^{14-8}\\\\=\dfrac{14!}{8!6!}\times(0.64)^8(0.36)^{6}\\\\0.183996740126\approx0.1840$

Hence, the probability that exactly 8 of them favor the building of the police substation = 0.1840

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3 years ago

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

Degger [83]

Answer:

So do you already have the answer? Also 1/20 looks right.

Step-by-step explanation:

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3 years ago

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Convert 7 months into days.

IgorC [24]

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212 days are in 7 months

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3 years ago

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Heather opened a lemonade stand on her street. It costs her $5.25 to buy the supplies each day, and she sells lemonade for $1.50

victus00 [196]

Answer:

around 66.66

Step-by-step explanation:

hope this helps

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3 years ago

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Can anyone please answer question 1 please it’s for my homework!! Xx

astraxan [27]

1/4 of her original money is 1.25 + 1.60 = 2.85

She started with 2.85 * 4 = 11.40 pounds.

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