3rd one ( not 20 characters so ASHWDHWHEIUCNEJEIH)
Answer:
The correct answer would be 
Step-by-step explanation:
given
we want to solve for a
How?
We can do this by using basic algebra ( isolating the variable (a ))
Step 1 subtract
from each side

now we have 
step 2 take the square root of each side

we're left with
Hence your answer is A
Answer:
(1,0)
Step-by-step explanation:
Absolute value is represented by using these bars → ║.
║= number of units from 0.
This equation says that whatever number is in the absolute value bars , x , is greater than y.
Answer:
x=1 or -1/2
Step-by-step explanation:
The value of x is 1 or -1/2
The fact that this triangle is a right angle triangle makes you now have 2 angles and the 1 side given, so it should be solvable.
First, You know that A=46 and C=90 as it is the right angle, and you know that the sum of any triangle's angles is 180. so now B=180-(90-46)=44
Now to the sides,
sin(B)=opp./hyp.=b/c=8/c=sin(44)
so, c=8/sin(44) which is approximately 11.52 unit length
now, use Pythagoras to find a,
a=√c²-b² =√11.52²-8² which is approximately 8.3 unit length.
Hope this helps.