Answer:
The common difference (or common ratio) = 0.75
Step-by-step explanation:
i) let the first term be = 80
ii) let the second term be =
. r = 80 × r = 60 ∴ r =
= 0.75
iii) let the third term be =
. r = 60 × r = 45 ∴ r =
= 0.75
iv) let the fourth term be =
. r = 45 × r = 33.75 ∴ r =
= 0.75
Therefore we can see that the series of numbers are part of a geometric progression and the first term is 80 and the common ratio = 0.75.
Answer:
The Jesse swim fastest
Step-by-step explanation:
Given as :
The distance cover by Elizabeth while swimming = 50 feet
The time taken by Elizabeth = 10 sec
So, Speed of Elizabeth =
∴ Speed of Elizabeth = = 5 feet per sec
Again ,
The distance cover by Jesse while swimming = 110 feet
The time taken by Jesse = 20 sec
So, Speed of Jesse =
∴ Speed of Jesse = = 5.5 feet per sec
Again ,
The distance cover by Reagan while swimming = 160 feet
The time taken by Reagan = 30 sec
So, Speed of Reagan =
∴ Speed of Reagan = = 5.3 feet per sec
So,
Hence The Jesse swim fastest Answer