For the first one it is x= (y+3)/4
Y = 12% = 0.12
y = 100(0.05) + x(0.2) / 100 + x
0.12 = 5 + 0.2x / 100 + x
0.12( 100 + x ) = 5 + 0.2x
12 + 0.12x = 5 + 0.2x
7 = 0.08x
x = 87.5
hope this help
Answer:
Just the hypotenuse and the 2 legs
The answer is a I believe
I hope this helped :)