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3 years ago

6

From 1965 to 1996 Canadian Gary Duschi made the world's longest gum wrapper chain. It was 18,721 feet long. About how many miles

long was the gum wrapper chain?

1 answer:

jok3333 [9.3K]3 years ago

6 0

It would be about 3.5 miles long so you chose 3 miles or 4 miles i would go with (4 miles)

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Help with following questions please.

s344n2d4d5 [400]

You need 2-7 all answered ?

5 0

3 years ago

The Resource Conservation and Recovery Act mandates the tracking and disposal of hazardous waste produced at U.S. facilities. Pr

aniked [119]

Answer:

(a) $E(X) = 0.383$

The expected number in the sample that treats hazardous waste on-site is 0.383.

(b) $P(x = 4) = 0.000169$

There is a 0.000169 probability that 4 of the 10 selected facilities treat hazardous waste on-site.

Step-by-step explanation:

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

N = 209

Only eight of these facilities treated hazardous waste on-site.

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?

n = 10

The expected number in the sample that treats hazardous waste on-site is given by

$E(X) = \frac{n \times r}{N}$

$E(X) = \frac{10 \times 8}{209}$

$E(X) = \frac{80}{209}$

$E(X) = 0.383$

Therefore, the expected number in the sample that treats hazardous waste on-site is 0.383.

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

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

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

$$ P(x = 4) = \frac{70 \times 84944276340}{35216131179263320}$

$P(x = 4) = 0.000169$

Therefore, there is a 0.000169 probability that 4 of the 10 selected facilities treat hazardous waste on-site.

8 0

3 years ago

Round 223 to the nearest ten

Aleks [24]

I believe the answer is 220?

5 0

3 years ago

Read 2 more answers

Determine the amplitude or period as requested . Amplitude of y = - 1/5 * sin x a - 1/5 1/5 b 5 d. pi/5

Brrunno [24]

Answer:

The amplitude is 1/5

Step-by-step explanation:

Given

$y = -\frac{1}{5}\sin(x)$

Required

Determine the amplitude

The general cosine function is:

$y = A\sin(k(x + c)) +d$

Where

$Amplitude = |A|$

Compare $y = A\sin(k(x + c)) +d$ and $y = -\frac{1}{5}\sin(x)$

$A = -\frac{1}{5}$

So:

$Amplitude = |-\frac{1}{5}|$

$Amplitude = \frac{1}{5}$

4 0

3 years ago

Ramon bikes every afternoon. He travels 4 1/4 miles in 1/4 hour. At what rate dies Ramon ride his bike in miles per hour

Colt1911 [192]

1/4 hour = 4 1/4 miles

Change to improper fraction:
1/4 hour = 17/4 miles

Multiply by 4 on both sides:
1 hour = 17 miles

Answer: Ramon rides his bike at 17 miles/hour.

8 0

4 years ago