Answer:
if im right its number 4!! if its not right sorry i did the math and thats what i got!!
The answer is D, to get rid of a radical you multiply by the radical to cancel out
Answer:

Step-by-step explanation:
Given
The attached triangle
Required
Find y
The attached triangle is isosceles; so:

Also, we have:
--- angles in a triangle
Substitute: 

Collect like terms


Answer:
PEMDAS
(5/12) +(23/10)
5/12=0.42
23/10=2.3
0.42+2.3=2.72
2.72 is the correct answer
If you did the math it is obvious that the answer is 20%