All categories

2 years ago

40 POINTS!!! PLEASE HELP I NEED IT NOW PLEASE HURRY

Mathematics

1 answer:

SVEN [57.7K]2 years ago

3 0

I believe that both answers are true bc 23*3= 69 and 12*3=36 and they are both less that $75

You might be interested in

What are the solutions to x2 + 8x + 7 = 0?

Ymorist [56]

The answer is x=-7 and x=-1

6 0

2 years ago

What is the probability of rolling a 4 or higher on a six sided number cube

Trava [24]

P(rolling a 4)=1/6

Explanation:
The probability of rolling a 4 or higher on a 6-sided number cube is 1/6

Answer: 1/6

8 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

2 years ago

What is the value of the square root of 25 + the square root of 16?

kozerog [31]

Answer:9

Step-by-step explanation: square root of 25 is 5 and of 16 the square root is 4 add both of them together and you get 9

6 0

3 years ago

Read 2 more answers

4 questions! Write an equation in slope-intercept form for each of the following:

AysviL [449]

1) y= -4x+c

2) y= 3x+c replace x and y to find c , 5=3(2)+c
C= -1
Y=3x-1

3) find slope first m=y2-y1/x2-x1 = 0-(-1)/-2-1 = 1/-3 and now you have y= -1/3x+c to find c just replace any of the given points , 0= -1/3(-2)+c
C= -2/3 and so y= -1/3x-2/3

4) DO THE SAME STEP AS NUMBER 3 and enjoy!

3 0

1 year ago