Answer:
Step-by-step explanation:

<span>2. scalene, isosceles, equilateral</span>
Answer:
200 mph
Step-by-step explanation:
Ⓗⓘ ⓣⓗⓔⓡⓔ
Plane a: 400mph
Plane b: x mph
2x=400
x=200
(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥
BTW, brainliest would be greatly appreciated, I only need one more before I advance, thanks!
Also, I may have done something wrong, please tell me if it's incorrect!
X² - 4x - 77 = 0
( x + 7) ( x - 11)
x + 7 = 0
x - 11 = 0
x = -7
x = 11