You have to do a to the 2nd power plus b to the 2nd power = c to the 2nd power than you would have to multiply a twice and then multiply b twice and then you would add a and b then find the square root to find c.
Answer:
8
Step-by-step explanation:
so my school uses the method called kcf (keep change flip)
keep the 4
change the division sign to a multiplication sign
flip 1/2 to 2/1
4x2=8
2 3/4 hours is 165 minutes
1hr and 55 min is 115 minutes
So 2 3/4 hours is 50minutes longer than 1hr and 55 min.