B and C are absurd; if a series converges, it must have a sum, but if a series diverges, it cannot have a sum.
Now, notice that
That is, we can write the sum more compactly as
The series is geometric with common ratio
, so the series converges (and thereby has a sum), so the answer is D.
Answer:
D
Step-by-step explanation:
x² - 81 ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b)
Here a = x and b = 9, thus
x² - 81 = (x + 9)(x - 9) → D
When you have a negative in a square root. It comes out as an i. So you have i square root of 4. That comes to be 2i. The next one comes out to be 5i. Then multiply 2i times 5i. = 10 I squared then the answer is -10
Answer:
16.92 pints of lemonade was made
Step-by-step explanation:
Answer: 0523 i think this the answer i don't know
Step-by-step explanation:
