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Mrac [35]
3 years ago
8

Please someone help me ASAP

Mathematics
2 answers:
belka [17]3 years ago
7 0
The answer is C.

The answer gives what exactly what you must do. Usually you must do distributive property then add or subtract property of equality and finally do division of equality to find and variable, in this case its x.
galben [10]3 years ago
6 0
It should be #4. or d to clarify

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a certain virus infects one in every 600 people. a test used to detect the virus in a person is positive 90% of the time if the
Alona [7]
  1. the probability that a person has the virus given that they have tested positive is  0.0151.
  2. the probability that a person does not have the virus given that they have tested negative is  0.9999

P(A) = 1/600 = 0.0017

P(B) = 0.9 * 0.0017 + 0.1 * (1 - 0.0017) = 0.1014

A) P (has the virus | tested positive) = P (tested positive | has the virus) ×  

                                                          P (has the virus)/ P (tested positive)

                                                         = 0.9 × 0.0017/0.1014  

                                                         = 0.0151

B) P (does not have the virus | tested negative) = P (tested negative | does not have the virus) × P (does not have the virus)/ P (tested negative)

= (1 - 0.1) *× (1 - 0.0017)/ (1 - 0.1014)  

= 0.9999

Probability is the department of mathematics regarding numerical descriptions of ways likely an occasion is to occur, or how possibly it's far that a proposition is genuine. The possibility of an occasion varies between zero and 1, wherein, roughly speaking, 0 suggests the impossibility of the occasion and 1 shows certainty. The better the possibility of an event, the more likely it is that the event will arise.  

A simple instance is the tossing of an honest (unbiased) coin. since the coin is truthful, the 2 results ("heads" and "tails") are both equally likely; the possibility of "heads" equals the chance of "tails"; and considering the fact that no different results are feasible, the possibility of both "heads" or "tails" is 1/2 (that could additionally be written as 0.5 or 50%).

To learn more about Probability visit here:

brainly.com/question/11234923

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6 0
2 years ago
Find the value of a² + b² , when a+ b = 8 and ab = 12
mezya [45]

Answer:

Step-by-step explanation:

6+2=8

6*2=12

6^{2} +2^{2}= 36+4=40

4 0
3 years ago
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Also (area O O O O O O​
Sav [38]

Answer:

slide A= 6

slide B= 8

perimeter= 36

Area = 80

Step-by-step explanation:

8 0
3 years ago
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Can 1 2/88 be simplified any lower?
pochemuha

Yes. It can be simplified into 1 1/44

6 0
3 years ago
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Pls answer<br><br>thank u guys ur AMAZING<br><br><br><br><br>thnxxxx
kozerog [31]

a             (3a-4b)

p             (4 + q -3r)

s             (3t +4u +2v)

q             (4pq + 3r + 5pr)

ab           (7a + b – 4)

tu           4tu+2uv +3w)

2abc      (5c – 2a + 3b)

8qrs       (2p+ 7q – 5)

5 0
3 years ago
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