Answer:
12
Step-by-step explanation:
Dividing by a fraction is equivalent to multiplying by its reciprocal.

The three components are power, which the maximum amount of force for a small time. Quickness, which is the ability to move quickly around the ground. Agility is the last which is being able to quickly change your posture.
The time needed to run the second half of the race is 8.44 s
Step-by-step explanation:
The total distance covered by the athlete during the race is
d = 200 m
And the total time taken to cover this distance is
T = 19.19 s
We also know that the time the athlete needs to cover the first half of the race is

Also, we know that

where
is the time the athlete takes to cover the second half of the race.
Re-arranging this equation and susbtituting the values, we find the value of t2:

Learn more about uniform motion:
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Answer:
Step-by-step explanation:
f(x) = x²+3
f(a+1) = (a+1)²+3 = a²+2a+4
Answer:
60.5 milligrams per square centimeter First, determine how many half lives have expired by dividing the time by the half-life. So: 55/20 = 2.75 That means that only 2^(-2.75) = 0.148650889 = 14.8650889% of the original substance remains. So just divide the amount remaining by 0.148650889 to get the original amount. 9 / 0.148650889 = 60.5445419 So originally, there was 60.5 milligrams per square centimeter 55 years ago.