The answer is C. Use the quadratic formula to solve it and you should be just fine!
Average thickness of book = Total thickness/mo. of books
= 28 cm/ 10
= 2.8 cm
Thus, on average, each book has 2.8 cm thickness.
Answer:
26x²+26
Step-by-step explanation:
Answer:
;
; 
Step-by-step explanation:
Given



Required
Arrange the angles from smallest to largest
First, we need to determine the value of x.
Since, it is a triangle:

Substitute values for A, B and C

Collect Like Terms


Solve for x


Solve for A, B and C









From Smallest to Largest, we have:
;
; 