Answer:
The answer is first and last
Step-by-step explanation:
Edge2020
im not gonna explain cuz some other guy got it wrong and im just answering for anyone who needs it
NUMBER SENSE Find the sum of the first nine terms of the geometric sequence -14, - 42, -126,-378,-1,134,-3,402,-10,206,-30,618,-
liq [111]
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Let's solve together :)
Group the like terms.
2b-5b+8+3=-13+8b-5
Add congruent elements.
-3b+8+3=-13+8b-5
Add up.
-3b+11=-13+8b-5
Group like terms.
-3b+11=8b-13-5
Subtract.
-3b+11=8b-18
Subtract 11 from both sides.
-3b+11-11=8b-18-11
-3b=8b-29
Subtract 8b from both sides.
-11b=-29
Divide -11b from both sides.
b = 29/11
Have such a great day :)
Plug in -3x-(3)=18
Add three both sides
-3x=21
Divide -3 both sides
x=7
The geometric sequence is a sequence with a common ratio. The common ratio is the ratio between the succeeding term and the preceding term of a sequence and must be equal to a constant k.
Given a sequence 2, 4, 8, 16... This sequence is geometric in nature because of a constant common ratio of 2.'
Common ratio = 4/2 = 8/4 = 2
Hence a geometric sequence is characterized by its common ratio
