Usual speed is given by :
Now, we want to reach job exactly at 10 : 00 .
So, time taken is , t = 10:00 - 09:30
t = 30 minutes = 0.5 hours .
New speed is :
Therefore, increase in speed is ( 90 - 77.14 ) = 12.86 mph.
Hence, this is the required solution.
Answer:i dont know can we help you
Step-by-step explanation:
Answer:
1: D
2: B
37.6
Multiply the numbers
2.193 cm³
density is mass divided by volume:
you can manipulate the formula by multiplying with volume:
then dividing by density:
in this case: