The answer is 10 because you subtract 17-7
In this case we will use the general equation:
d = s t (distance =
speed*time)
Therefore
Distance Amy can run in 13.4s:
d = (100m/14.1s)*(13.4s)
d = 95.04meters
Headstart needed = total distance - distance run in 13.4s
(time Maya runs 100m)
headstart needed = 100-95.04 = 4.96meters
Answer:
I don’t see a model??
Step-by-step explanation:
Answer:
Queen Elizabeth ll
Step-by-step explanation:
Australia's head of state is Queen Elizabeth II.
The time taken for 21000 spectators to vacate the stadium , if only 15 exits are functional is 28 minutes .
In the question ,
it is given that
the time taken to vacate the stadium = 20 minutes
number of exits = 25 exits
capacity of the stadium = 25000 spectators .
given that ,
time taken to exit the stadium varies directly with number of spectators and inversely with the number of exits .
time taken ∝ number of spectators ∝ 1/number of exits .
to remove the proportionality sign , we write the constant
time taken = k * (number of spectators)/(number of exits) .
20 = k * 25000/25
20 = k * 1000
k = 20/1000
k = 2/100
k = 1/50 = 0.02
So, to find the time taken for 21,000 spectators to vacate the stadium, if only 15 exits are functional , we use the formula
time taken = (0.02)*(21000/15)
= 0.02*1400
= 28
Therefore , The time taken for 21000 spectators to vacate the stadium , if only 15 exits are functional is 28 minutes .
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