Question

I will give a fan and medal to whoever helps me!
I need help on these questions as I'm preparing for a unit test. Please help
Is the sequence geometric? If so, identify the common ratio.
256, 64, 16, 4
What is the summation notation for the series?
200+175+150+125+...+(-300)
What is the sum of the arithmetic series?
5
Σ; (3n-2)
n-1
What is the sum of the geometric series? Round to the nearest whole number.
16
Σ; 6(1/4)^n
n-1
Does the infinite series diverge or converge? If it converges what is the sum?
10+2+2/5+2/25+....
what is
a_n= 2a_n-1 -1 where a_1 = 2?

Thank you !!!

Answer 1

YUS

Answer 2

what grade is this?

Answer 3

10th grade

Answer 4

YUS

Answer 5

@IDGAFAU ???

Answer 6

@dan815