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IRINA_888 [86]
4 years ago
14

..................................

Mathematics
1 answer:
Nina [5.8K]4 years ago
8 0
.....................hi.............
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Which of the following list all x - intercepts of the graph of the equation y = x^3 - 4x ?
san4es73 [151]

Step-by-step explanation:

x³ - 4x = 0

x (x² - 4) = 0

x (x + 2) (x - 2) = 0

Thus the answer is (b) (-2 , 0) , (0 , 0) , (2 , 0)

6 0
4 years ago
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
5/6+1/4 these are fractions
Papessa [141]
5/6 + 1/4

multiply the denominators and numerators in order for equation to have the same denominators to help solve.

20/24 + 6/24

= 26/24

= 13/12

Hope you find this helpful!
Brainliest and a like is much appreciated!
3 0
3 years ago
jaune uses 12 eggs to make cupcakes. she uese 4 eggs for each batch of cupcakes. which expression can be used to find the number
Mandarinka [93]

Answer:

I'm not sure if this is correct but i think 3.

12 divided by 4 is equal to 3.

3 0
4 years ago
Explain to me how to do this please
nataly862011 [7]
You must first attach the problems with your question.
6 0
3 years ago
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