4 x - 9 y = 1
- 4 x + 6 y = - 2
- 3 y = - 1
y = 1
4 x - 9 y = 1
4 x - 9 ( 1) = 1
4 x - 9 = 1
4 x = 1 +9
4 x = 10
x = 10/4 = 2.5
S ( 2.5 ; 1)
Answer:
T = a + (n-1)d
Step-by-step explanation:
The arithmetic progression formula could be used to represent the series
T = a + (n-1)d
Where a = number of miles before increase
d = intended additional number of miles each day
n= number of days
Hence on the 2nd day, number of miles to be covered by Jeff will be
T = a + (2-1)d = a + d
This is a thought problem