A heptagon has angles that measure 120°, 110°, 140°, 135°, 160°, 100°, and b. What is b?

Here,

We know that,

Sum of interior angles of a heptagon=900°

So,

b+120+110+140+135+160+100=900

or, b+765= 900

or, b=900-765

Therefore, b= 135°

135

Step-by-step explanation:

the first one, all those points on the line just make a strait line.

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17