Answer:

Step-by-step explanation:
Required
15 is what percentage of 105
To do this, simply divide 15 by 105 multiplied by 100%.
So, we have:



--- approximated
3(2)+2(3)=12 <<<< is the answer! :)
To answer (a), we will need to find the Z value for 710 hours and 990 hours.


B) 68% of data lies between one standard deviation of the mean.
850 +70 = 920
850 - 70 = 780
Step-by-step explanation:
(A)It says AT A BASKETBALL CHAMPIONSHIP so obviously most people there would’ve said basketball.
(B) Maybe try doing the whole school and not just the students at the basketball championship.
hope this helped! if you need anything else let me know. <3
There are 3 terms in this expression. You can determine this answer by knowing that terms are either a single number or variable or numbers and variables multiplied together. Here's a picture example below:
Hope it helps! Mark as brainliest!