Answer:
3.5km
Step-by-step explanation:
not sure but this is how I'll do it tho
distance= 7 x 1/2 = 3.5 (km)
im doing this problem right now---
ok so a1=256 a2=64 a3=15 a4=4... find a9
the sequence divides by 1/4 every term
an=a1*r^n-1
an=(256)*(1/4)^n-1
replace n with 9
A9=(256)*(1/4)^9-1
A9=(256)*(1/4)^8
=(256)*(1/4)
A9=64^8
1/256 or a9= 0.00390625
the answer is x=-1/3
