#10

#11
- Last three i.e Option B,C,D
#13
It started from negative ends at positive hence

#14


#15

#16



Answer:
72
Step-by-step explanation:
8/9 + 3/8
Multiply the denominators to get the common denominator
9x8 = 72.
So all angles within a triangle should add up to 180, 102+31= 133 then subtract. 180-133=47
X-47
P = 2L + 2W
factor out 2 from right side
P = 2(L+W)
Divide both sides by 2
P/2 = L + W
subtract W from both sides
L = P/2 - W
((X1+x2)/2,(y1+y2)/2)
---> ((2+2)/2,(1+4)/2)
---> (2,2.5)