Hope this will help u....
Recall your d = rt, distance = rate * time
we know the total trip was 352miles, so, let's say he was going for the first 2hrs at "r" speed, he went "d" miles, then he slowed down to "r - 20" and went 6 more hours, since the total trip is 352 miles, the 6hrs take the slack from 352 - d, and that's how many miles he covered on those 6hours

solve for "r".
Supplementary angles add up to 180 degrees.
2x - 8 + 8x - 12 = 180
10x - 20 = 180
10x = 200
x = 20
Angle 1 = 32
Angle 2 = 148
The measure of the largest angle is 148
Hope this helps =)
Answer:
55°
Step-by-step explanation:
Remember:
- A flat angle is 180°
- The sum of the angles in a triangle is 180°