65,000. I'm quite certain because a 1 wouldn't be sufficient to shift the 5 higher.
2x − y = −4 → 10x − 5y = −20
3x + 5y = 59 → 3x + 5y = 59
13x = 39..... this is derived from adding the two equations on the right.
13x = 39 can be used in place of 3x + 5y = 59 in the initial system and will yield the same result.
Answer: 12 days
Step-by-step explanation:
Distance = speed x time
2214.50 = 21.14 / t
t = 2214.50 / 21.14 = 104.75 hours
By cycling 9 hours each day, it will take
104.75 / 9 = 11.64 = 12 days
