Sum of geometric sequence
for the sum where the initial value is a₁ and the common ratio is r and the term is n

common ratio is -3
-5 times -3 is 15, -15 times -3=-45 etc
first term is -5
and we want the 8th term





the sum is 8200
Answer:
cosa = 3/5
Step-by-step explanation:
Use Trignometrical identity cosa = √
1
−
sin
^2a
cos a = √
1
−
16
/25 = √
9
/25 = 3
/5
Answer: are you sure you did ask a question instead of answer it, I’m answering yours like this. Maybe you hit something different. You get points when you answer people. And you use points when you ask a question
Step-by-step explanation:
GED is 43
CEB and AED is 90
GEB and FEA is 47
hope this helps!
Answer:
$1.25
Step-by-step explanation:
$2.50 / 2 = $1.25 per liter