Answer:
A. 24 lap/hour.
B. r = 24h
Step-by-step explanation:
Let r be the number laps.
Let h be the time.
From the question given above, the number of laps (r) Jessica runs around the track is proportional to the time (h) she spend running. This can be written as:
r & h
r = Kh
Where:
r is the number of laps.
K is the constant of proportionality.
h is the time.
A. Determination of the constant of proportionality.
With the above formula, we can calculate the value of the constant of proportionality, K as follow:
Number of laps (r) = 12 laps
Time (h) = ½ hour
Constant of proportionality (K) =.?
r = Kh
12 = K × ½
12 = K/2
Cross multiply
K = 12 × 2
K = 24 lap/hour
Therefore, constant of proportionality is
24 lap/hour.
B. Equation for relationship between the number of lap and time. This is illustrated below:
r = Kh
K = 24
r = 24h
Therefore, the equation for relationship between the number of lap and time is r = 24h
If a man 73kg man weighs himself at the North
Pole and at the Equator, the difference in weight in Newtons is 719.37. I
am hoping that this answer has satisfied your query about this specific
question, thank you and have a nice day.
Answer: The experimental probability is 70 %
Step-by-step explanation:
According to the given question have to find that the experimental probability that a 10th-grade student chosen at random has at least one, but no more than two, siblings
As we know that,
![Probability = \frac{number of favourable outcomes}{total possible outcomes}](https://tex.z-dn.net/?f=Probability%20%3D%20%5Cfrac%7Bnumber%20of%20favourable%20outcomes%7D%7Btotal%20possible%20outcomes%7D)
If 10th-grade student chosen at random has at least one, but no more than two, siblings
Therefore, there can be one or two siblings
Such that, the total number of such students ![=18+10=28](https://tex.z-dn.net/?f=%3D18%2B10%3D28)
Now, number of favorable outcomes =28 and total number of students
![=4+18+10+8=40](https://tex.z-dn.net/?f=%3D4%2B18%2B10%2B8%3D40)
Now,
![Probability = \frac{number of favourable outcomes}{total possible outcomes}](https://tex.z-dn.net/?f=Probability%20%3D%20%5Cfrac%7Bnumber%20of%20favourable%20outcomes%7D%7Btotal%20possible%20outcomes%7D)
%