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Morgarella [4.7K]

3 years ago

14

Can someone answer B please???

1 answer:

lbvjy [14]3 years ago

8 0

A)

150 were surveyed, possible outcomes, and 132 said they prefer dogs, favorable outcomes, 132/150 or 22/25 or 0.88, now 0.88 * 100 is just 88, namely 88% is the probability.

b)

since we know is 88%, what is 88% of 100? (88/100) * 100, 0.88 * 100, or just 88 students.

c)

18/150 or 3/25 or 0.12 namely 12%,

what's 12% of 300? (12/100) * 300, or 0.12 * 300, so just 36 students.

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What is the rule of -3,18,-108,—,—,—

lisabon 2012 [21]

Hi! ❄

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The rule for this sequence is 'multiply by -6'.

Verification ↓

-3*(-6) $\stackrel\checkmark{=}$ 18

18*(-6) $\stackrel\checkmark{=}$ -108

So the rule for the sequence is 'multiply by -6'

And the Common ratio is -6.

Hope that made sense !!

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Korolek [52]

Step-by-step explanation:

1.

$qr - pr \: + qs - ps$

$r(q - p) + s(q - p)$

$(r + s)(q - p)$

2.

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3.

$6xy + 6 - 9y - 4x$

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3 years ago

A bag contains marbles: 5 red, 2 blue, and 1 green. You pick a marble and then another one without replacement. What is the prob

max2010maxim [7]

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1st draw: green

2/12. (2 green out of 12 marbles), reduces to 1/6

2nd draw: blue

4/11 (4 blue marbles out of the 11 marbles remaining after 1st draw.)

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Conditional probability:

P(a and b) = P(a)P(b|a)

Prob(event 1) × Prob(event 2 given event 1).

1/6 • 4/11 = 4/66 = 2/33 or 0.0606. just a hair over 6% probability of the described sequence hapening.

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