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Serjik [45]
3 years ago
5

Please guys help to solve this problem​

Mathematics
2 answers:
liq [111]3 years ago
6 0

9514 1404 393

Answer:

  300

Step-by-step explanation:

Since nobody failed, the number who passed one or the other was 100%.

  P(O + W) = P(O) +P(W) -P(O&W)

  100% = 80% +70% -P(O&W)

  P(O&W) = 50% = 150 students

If 150 students are 50% of the examinees, then 100% will be 300 students.

zhuklara [117]3 years ago
3 0

Answer:

<h2>300</h2>

hope it helps

<h3>#<em><u>CARRYONLEARNING</u></em></h3>
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Answer:

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Step-by-step explanation:

To find the value of the angle theta that gives us tan(theta) = 2, we should use the inverse function of the tangent in the calculator, that is, the arc tangent function.

Then, if we use the arc tangent function (in some calculators, it may be shown as 'atan' or 'tan^-1') in the value 2, we would find:

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