Please find the attachment below for the solution...
The answer is C.
Explanation: There are 3 x variables and on the other side you see 11.
So the answer is 3x = 11
Answer:
its the mean for the data, its showing you the average studying time
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1
Consider the left side
2cos²A - 1 ← replace 1 by sin²A + cos²A
= 2cos²A - ( sin²A + cos²A)
= 2cos²A - sin²A - cos²A
= cos²A - sin²A = right side ⇒ verified