Answer:
4.1.
Step-by-step explanation:
Mean score = total score / number of students
Total score =
1*2 + 2*5 + 3*3 + 4*6 + 5*7 + 6*9
= 134
Number of students = 33
So the required average = 134 / 33
= 4.1.
Answer: 60
Step-by-step explanation:
in the attachment
The answer is C that is X=27
view the picture for step by step solution
To solve this problem you need to do a proportion. First you do 15 over x= 75 over 100. Now you multiply 15 by 100 which is 1500. Next, you divide 1500 by 75. YOUR ANSWER IS 20 peaches. To check your work, you could divide 20 by 4 which is 5. 5 times 3= 15 peaches.
At the beginning you have 10 balls, 5 of which are red. So, the chance of picking a red ball with the first pick is
When it comes to the second pick, you have 9 balls (because you didn't replace the first red ball), 3 of which are blue. So, you pick a blue ball with the second pick with probability
The two events will occur one after the other with the product of the probabilities: