Hi there!
Let's use the given formula of a square (A = s^2), to figure out what the equation would be. We are looking for one side, or s here.
WORK:
81 = s^2
squareroot(81) = s
ANSWER:
The second option, root 81.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
A) It is a right angle triangle.
Answer:
First question D
Second question C
Step-by-step explanation:
First question:
You lose 10 (-10), then lose 5(-5)
-10 - 5 = -15
Second:
-3 - 4 - 3= -10
Supplementary angle = Angels which add up to 180 degrees
Angle CED
we are supposed to find
The expression that completes the statement to form a true inequality

Here 
So the given inequality to be true the value of the option(s) should me bore than 39
First option: 
As its not more than 39. Hence its not the correct option.
Second Option : 
Hence this is the correct option so,

Third Option: 
As its not more than 39. Hence its not the correct option.
Fourth Option: 
As its not more than 39. Hence its not the correct option.