It takes a car 1.75 h to go from mike marker 10 to mile marker 115. what is the average speed of the car? a) 65 mph b) 60 mph c) 1.6 mph d) 183 mph

b) 60mph

Step-by-step explanation:

Referring to the fact that he goes from marker 10 to marker 115, which is 100 miles, while taking 1.75 hours

We will divide 100 by 1.75

100/1.75=60

So the answer is 60 mph

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)