Answer:
36 squared units
Step-by-step explanation:
So you can draw "made up lines" or I guess lines you draw yourself to create 2 rectangles. Check attachment.
The first rectangle is a square and has sides 3 and 3, so you get the area of 9.
The second, has sides 9 and 3, so you get the area of 27
Since you are trying to find the entire thing, you add 27 and 9 to get 36
Step-by-step explanation:
Given,
Total number of multiple choice questions = 17
To find, the mean for the number of correct answers = ?
Each question has four possible answers.
If guessing at random:
There is only one in four chances.
= 25 % chance of getting a particular question right.
This is the same probability for each of the 17 questions.
If there is a 25 % chance of getting any given question right.
There are 17 questions.
∴ The total number of questions you will expect to get right =
25 % × 17
=
=
= 4.25
≈ 4.3
∴ The mean for the number of correct answers = 4.3
Thus, the required "option c) 4.3" is correct.