Answer:
504
Step-by-step explanation:
Given,
common ratio (r) = 0.5
first term (
) is 256
Sum of first n terms in geometric series is given by the formula (r < 1):

Hence, sum of first 6 terms mean:
r = 0.5
a = 256
n = 6
Substituting, we get the answer to be:

The sum of first 6 terms is 504
Answer:
the Answer is 3x+12)+X=180
Answer:
the answers are 12.5, 5, 2, 0.8 and 0.32
Step-by-step explanation:
2(0.4)^-2
=2(6.25)
= 12.5
2(0.4)^-1
= 2(2.5)
=5
2(0.4)^0
=2(1)
=2
2(0.4)^1
=2(0.4)
=0.8
2(0.4)^2
=2(0.16)
=0.32
Answer:
26/15
Step-by-step explanation:
See attached image.