Answer:
1. The sum of interior angles of a pentagon is 180 but here the sum of angles of this pentagon is 550 . So it is wrong.
2. Angle 145 is equal to the corresponding of angle y. So angle y is 145 degree.So according to opposite angle theorem, angle x is also 145 degree.
Sorry I do not know next question solutions.
Let Hong lives at a distance of d miles from mountains .
We have to use the formula of speed, distance and time, which is

On droving to the mountain,

On droving back to home,

The difference between the two speeds = 18miles per hour, that is



<span>f+0.2=−3
subtract 0.2 to both sides
f + 0.2 - 0.2 = -3 - 0.2
simplify
f = -3.2
answer is </span><span>f = 3.2</span>
Answer:
B.80
Step-by-step explanation: