Question

all the blank answers

Answer 1

the sum of inner angles of a pentagon is equal to

$n - 2 \times 180 = (5 - 2) \times 180 \\ 3 \times 180 = 540$

so:

$x + 10 + x + 20 + 2x + 10 \\ + x + 10 + 2x = 540 \\ 7x + 50 = 540 \\ 7x = 490 \\ x = 70$

and the largest one is 150

$2x + 10 = 2(70) + 10 = 150$

the answer is 1/16

$4 {}^{ - 2} = \frac{1}{4 {}^{2} } = \frac{1}{16}$

the parallel line can be

y=2x+4

or any line with different y intercept

good luck