Answer:
It would take you 5/3 hours, or 1 hour and 40 minutes.
Hope I helped! ☺
Answer:
The answer is 20 because when you divide 56 by 2.8 you get 20

I'm not sure why ± that sybol isn't working
all together you can write

Ughh just ignore the "A" symbol .-.
Answer:
WTH is that bro, If I had to answer this between a life or death situation I'd die
The sum of two supplementary angles is 180 degrees.
A+B=180.
80+B=180
B= 180-80
B=100