Answer:
52.5 days
Step-by-step explanation:
Ten people can dig 2 acres in 7 days.
One person can dig 0.2 acres in 7 days.
Working at half the rate, one person can dig 0.1 acre in 7 days.
8 people can dig 0.8 acres in 7 days.
8 people can dig 6/0.8 * 0.8 acres in 6/0.8 * 7 days.
8 people can dig 6 acres in 52.5 days
14895.6
-9y + 19
Hope that helps.
Simplify the expression using the definition of an imaginary number i = sqrt -1
i32 = 1
i25 = i
i86 = -1
i51 = -i
