the sum of inner angles of a pentagon is equal to
[tex]n - 2 \times 180 = (5 - 2) \times 180 \\ 3 \times 180 = 540[/tex]
so:
[tex]x + 10 + x + 20 + 2x + 10 \\ + x + 10 + 2x = 540 \\ 7x + 50 = 540 \\ 7x = 490 \\ x = 70[/tex]
and the largest one is 150
[tex]2x + 10 = 2(70) + 10 = 150[/tex]
the answer is 1/16
[tex]4 {}^{ - 2} = \frac{1}{4 {}^{2} } = \frac{1}{16} [/tex]
the parallel line can be
y=2x+4
or any line with different y intercept
good luck
