Answer:
It is 140
Step-by-step explanation:
Cross multiplying is the easiest way to solve this
4b²+20b+25=0
Divide everything by 4
b²+5b+ 6.25=0
use the quadratic formula
x= (-b+ or - √b²-4ac) /2a
x= (-5 + or - √5²-4*1*6.25) /2(1)
x= -5/2 so
in this case, b= -5/2
Answer: The speed was 4.1 MB/sec.
We first find the amount that was transferred within the first 125 seconds:
549-36.5=512.5
Now we divide this by 125, the number of seconds:
512.5/125 = 4.1
The speed of the transfer is 4.1 megabytes per second.
It took 235 seconds for the drive to be completely filled.
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
84/7 is 12, so she was going 12 mph