Answer:
k = 10
Step-by-step explanation:
The sum of k terms of a geometric sequence with first term a1 and common ratio r is given by ...
... Sk = a1·(1 -r^k)/(1 -r)
For the given numbers, this is ...
... 118096 = 78732·(1 -(1/3)^k)/(1 -1/3)
Manipulating this to get the term containing k, we have
... 1 -(2/3)(118096/78732) = (1/3)^k
... 1/59049 = (1/3)^k
Taking logarithms, we get
... -log(59049) = -k·log(3)
... log(59049)/log(3) = k = 10
Answer:
10 Weeks
Step-by-step explanation:
If he makes $300 every week minus $40 for his expenses and needs $1200. 300-40=260..... 260x10=1200 So he would have to work 10 weeks at a minimum.
Answer:
b
Step-by-step explanation:
Answer:
Square root 9x + 7 + square root 2x = 7
Step-by-step explanation:
Square root 9x + 7 + square root 2x = 7, if i could put the square root symbol in I would.
Hope my answer has helped you and if not i'm sorry.
Answer:
Step-by-step explanation:
here you go mate
step 1
-2x+4 equation
step 2
-2(-2)+4 substitute -2 for x
2+2+4
answer
8
