Answer:
<u>The correct answer is B. 40 mph</u>
Step-by-step explanation:
1. Let's review the information provided to us to answer the question correctly:
Distance (d) the car traveled = 120 miles
Time (t) of the travel = 3 hours
2. What is the average rate of speed?
Rate of speed (r) = Distance (d) the car traveled/Time (t) of the travel
Replacing with the real values, we have:
Rate of speed (r) = 120/3 miles per hour
Rate of speed (r) = 40 miles per hour
<u>The correct answer is B. 40 mph</u>
A) P( Jordan finishes before Jacobs)= 2/5 = 0.40
P( Jacobs finishes before Julia) = 3/5 = 0.60
P(Jordan finishes before Jacobs AND before Julia) = 0.40 x 0.60 = 0.24
b)P( Jordan finishes before Jacobs)= 2/5 = 0.40 (already calculated
Answer: 2x for x=3: 2(3) = 6.
Step-by-step explanation:
Half-life = elapsed time * log(2) / log (bgng amt / ending amt)
half-life = (5 *
<span>
<span>
<span>
0.3010</span></span></span>3) / log (1/.6)
half-life = (5 *
<span>
<span>
0.3010</span></span>3) / log (1/.6)
<span>half-life = 1.505 / </span>
<span>
<span>
<span>
0.221848750
</span>
</span>
</span>
half-life =
<span>
<span>
<span>
6.785 days
Location for formulas & calculator
http://www.1728.org/halflife.htm
</span></span></span>
