Answer:
the first question , the answer is A[2,oo)
the answer to the second question is B
Answer:
the answer is B, complementary angles
Step-by-step explanation:
complementary angles are two angles that add up to 180 degrees
105 + 75 = 180
Answer: The correct option is (C) 
Step-by-step explanation: We are given to choose the correct simplification for the following expression :

We will be using the following property of exponents :

So, the simplification of expression (i) is as follows :

Thus, the correct simplification of the given expression is 
Option (C) is CORRECT.
It is 70%, to calculate you want to get your denominator to be 100 (for 100%) and in order to get that you must multiply by two (whatever you do to the bottom you must do to the top) so, you get 70/100%
Answer:
c.11
Step-by-step explanation:
h + 9 < 20
-9 -9
--------------------
h<20-9
h<11