Answer:
area:
Perimeter: 16x+12
Step-by-step explanation:
area :
thats 
P: 4(4x+3)
thats 16x+12
Hope this helped you
<3
Red
Answer:

For further explanation see the picture attached...
Answer:
n + 50 = 90; n = 40
Step-by-step explanation:
the angle is a right angle so it adds up to 50
one side is 50
so
n + 50 = 90
subtract 50 to both sides
n = 40
Answer:
You need a common denominator.
Step-by-step explanation:
3/4+2/3
9/12+8/12