Answer:
r = -
Step-by-step explanation:
The common ratio r of a geometric sequence is
r = = = .....
Hence
r = = = -
<span>the summation of -2n - 3, from n equals 2 to 10 is the sum of the first 10 term minus the first term.
Tn = -2n - 3
T1 = -2(1) - 3 = -2 - 3 = -5
T10 = -2(10) - 3 = -20 - 3 = -23
Sn = n/2 (T1 + Tn)
S10 = 10/2 (-5 + (-23)) = 5(-5 - 23) = 5(-28) = -140
</span>
<span>Therefore, the summation of -2n - 3, from n equals 2 to 10 = -140 - (-5) = -140 + 5 = -135.</span>
This didnt get answered so Ill answer it. Its simple.
The distance between 6 and 1 is going to be 5. (or in some cases, -5)
The distance between +5i and -2i is going to be 7i (or in some cases, -7i)
So depending on how the problem defines the distance, it is either 5 + 7i or -5 - 7i
Answer:
A fixed interest rate will always be the same rate of interest throughout a period of time no matter the amount of borrowed money. A variable interest rate can change over time based on the amount of money borrowed.
Lets see!
We need to use the pythagorean theorem (a^2+b^2=c^2) to check.
So..
15^2+ 17^2 = 19^2
225+ 289= 361
Hm 225 and 289 do NOT equal 361 therefore it is NOT a right triangle.