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3 years ago

It takes 52 minutes for 5 people to paint 5 walls.

Mathematics

1 answer:

Papessa [141]3 years ago

4 0

i think its twenty hours.....but dont take my word on it im not 100% on it

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7/10 - 5/8 in simplest form

NISA [10]

Answer:

3/40 :D

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

14. Suppose that 1 out of every 10,000 doctors in a certain region is infected with the SARS virus; in the same region, 20 out o

hram777 [196]

Answer:

The person in the at-risk population is much more likely to actually have the disease

Step-by-step explanation:

The probability of a randomly selected doctor having the disease is 1 in 1,000 (P(I)=0.0001).

The probability that a doctor is infected with SARS, given that they tested positive is:

$P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.0001*0.99}{0.0001*0.99+(1-0.0001)*0.01}\\P(I|+)=9.9*10^{-3}$

The probability of a randomly selected person from the at-risk population having the disease is 20 in 100 (P(I)=0.20).

The probability that a person in the at-risk population is infected with SARS, given that they tested positive is:

$P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.2*0.99}{0.2*0.99+(1-0.2)*0.01}\\P(I|+)=0.962$

Therefore, the person in the at-risk population is much more likely to actually have the disease

3 0

3 years ago

Order the amount of rain from least to greatest

babymother [125]

Answer:

1/5, 1/2, 3/4

Step-by-step explanation:

I just now this already from experience, but you could covert all of the fractions into a common denominator. For example use 20.

1/5 = 4/20

1/2 = 10/20

3/4 = 15/20

Then you just need to look at the numerators which 4,10,15 would be the order. And then make sure to convert to the original fractions making the final order be 1/5, 1/2, 3/4.

8 0

3 years ago

PLEASE HELP AND EXPLAIN!!

prisoha [69]

Answer:

Step-by-step explanation:

This isnt a cartisean coordinate plane so A is wrong. One of our points is at

$- 3 + i$

Because it coincide with real number 3, and negative imaginary number i.

Conjugates are terms with opposite inverse of terms.

So our conjugates is

$- 3 - i$

3 0

3 years ago

The perimeter of a square is 64 cm.<br> What is the length of the diagonal of the square?

Angelina_Jolie [31]

the diagonal length and probably be 22.2

7 0

3 years ago