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Mamont248 [21]
3 years ago
7

A quiz consists of 770 true or false questions. If the student guesses on each question, what is the mean number of correct answ

ers?​
Mathematics
2 answers:
Svet_ta [14]3 years ago
7 0

Answer: you have a 50/50 chance of getting it right, so basically the number would be 385. half of 770 is 385.

Step-by-step explanation: im built different

amid [387]3 years ago
5 0
385 or 1/2 i suppose
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Solve the following equations x1/3=2 <br> Y-2=9<br> (2s)1/2=9<br> 2n-1=16
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x \times  \frac{1}{3}  = 2 \\  =  > x = 2 \times 3 \\  =  > x = 6

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(2s) \frac{1}{2}  = 9 \\  =  > s = 9

2n - 1 = 16 \\  =  > 2n = 16 + 1 \\  =  > 2n = 17 \\  =  > n =  \frac{17}{2}  = 8.5

<h3>The answers are :</h3><h3>x = 6</h3><h3>y = 11</h3><h3>s = 9</h3><h3>n = 8.5</h3><h3>Hope it helps!</h3><h3 />

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3 years ago
X increased by 10 is equal to 42
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Answer:

x = 32

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Answer:  [A]:  "library card".
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Even "school ID's"; or "college ID cards"; even if "current" (e.g. currently enrolled" with a photo ID) would not be considered "official" and would only be considered "secondary ID".
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mean= 835.9
median= 173.2
mode= N/A
5 0
3 years ago
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