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3 years ago

(×-0.20×)+0.10 (×-0.20×)

Mathematics

2 answers:

Rufina [12.5K]3 years ago

5 0

0.88x distributive property and isolate the variables

Anna71 [15]3 years ago

3 0

Simply the expression

(x-0.2x)+0.10 (x-0.20x)

=(0.8x)+0.1+0.8x

=0.8x+0.1+0.8x

=(1+0.1) × 0.8x

=1.1 × 0.8x

=0.88x

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2 years ago

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Answer:

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Step-by-step explanation:

Professional Geographer (Feb. 2000) reported the hazardous waste generation and disposal characteristics of 209 facilities.

N = 209

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r = 8

a. In a random sample of 10 of the 209 facilities, what is the expected number in the sample that treats hazardous waste on-site?

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b. Find the probability that 4 of the 10 selected facilities treat hazardous waste on-site

The probability is given by

$P(x = 4) = \frac{\binom{r}{x} \binom{N - r}{n - x}}{\binom{N}{n}}$

For the given case, we have

N = 209

n = 10

r = 8

x = 4

$P(x = 4) = \frac{\binom{8}{4} \binom{209 - 8}{10 - 4}}{\binom{209}{10}}$

$P(x = 4) = \frac{\binom{8}{4} \binom{201}{6}}{\binom{209}{10}}$

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Answer:

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