Answer:
its B
Step-by-step explanation:
Answer: 62.
Step-by-step explanation: The mean is the average. In order to find the average, we need to add all of the numbers up, then divide by the number of quizzes. So:
20 + 40 + 40 +40 + 60 + 60 + 60 + 60 + 80 + 80 + 80 + 80 + 100 = 800
800 / 13 = 61.5, appr. 62.
hope it helps you!!!!!!!!!!
Answer:
Multiply each side by 24.
Step-by-step explanation:
To get x by itself, you need to do the opposite of what is with it. So, if it's in a fraction, you must multiply it. So, on the right side the 24's would cancel out. That put's X by itself. Then on the left side you multiply 9/2 by 24. I find it easier to put it as 24/1x9/2 to make it easier. Basically, you just multiply 9 by 24 and then multiply 1 by 2, so the answer to this equation would be x=216/2, and when simplified, X=108.
Answer:
a) 33; b) 8; c) 145
Step-by-step explanation:
There were 29 students in band. This includes the 9 in both band and drama; this leaves 20 in only band.
There were 17 students in drama. This includes the 9 in both band and drama; this leaves 8 in only drama.
There were 70 students sampled; this means that
70-(20+8+9) = 70-37 = 33 students in neither band nor drama.
There were 8 in only drama.
Since there were 29/70 in band, this means the director can assume he will have
29/70(350) = 29/70(350/1) = 10150/350 = 145 to show up the first day.
