what subject is this? maybe i can help you!
The answer is 449 so I multiplied 56.7 =404 I added 402+7=411 and added 411+8=419 I added 419+4=441
Answer:
22 hours (B)
Step-by-step explanation:
John's velocity = 55mph
Sally's velocity = 65mph
John's time taken = x
Sally's time taken = x - 4
since they must cover the same distance.
and, distance = vel × time
Sally's vel × time = John's vel × time
55x = 65(x-4)
55x = 65x - 220
-10x = -220
x = 22 hours.
Therefore, Sally catches up after 22 hours
Answer:
A. 28in2
Step-by-step explanation:
10 x 2 = 20
2 x 2 = 4
2 x 2 = 4
20 + 4 + 4 = 28
ANSWER : A, D, E
Good luck!