Answer:
1 and 2 on what? 1+2=3
Step-by-step explanation:
Answer:
Step-by-step explanation:
The data of timing for each lap will form a arthmetic progression ( AP ) with first term as 25 s and common difference of 1.6 s .
a )
first term a = 25
common difference d = 1.6 .
10 th term of the series can be given by following formula
a₁₀ = 25 + ( 10-1 ) x 1.6
= 25 + 1.6 x 9
= 39.4 s
b )
Let n th be the last lap
a(n) = a + ( n-1 ) x d
55.4 = 25 + ( n- 1 ) x 1.6
n - 1 = 19
n = 20 .
c )
sum of all the term of AP
=( first term + last term ) x no of term / 2
= (25 + 55.4 ) x 20 / 2
= 804 s .
= 804 / 60 min
= 13.4 min .
Hope this will help you.
So, you already know how long it takes him to run 100 meters,9.91 seconds.
In order to get the answer, you need to multiply 26 miles by 9.91 seconds.
The answer you would get from doing that is 257.66 minutes.
If you want to simplify it into hours, simplify it by 60 minutes.
4 hours and 29 minutes is the answer.