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4 years ago

A1=1 , an= 4a n-1 -1

1 answer:

4 0

for part (a) find the sum of the first n terms of the arithmetic series. for part (b) find n for the given sum Sn.
45. 3+8+13+18+23+...
a. n=20
b. Sn=366
46. 50+42+34+26+18+...
a. n=40
b. Sn=182
47. -10+(-5)+0+5+10+...
a. n=19
b. Sn=375
48. 34+31+28+25+22+...
a. n=32
b. Sn=-12
49. 2+9+16+23+30+...
a. n=68
b. Sn=1661
50. 2+16+30+44+58+...
a. n=24
b. Sn=2178

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3 years ago

Please help answer!!!!

user100 [1]

Answer:

? = 4

Step-by-step explanation:

You are in the third quadrant. You want the answer to come out to the equivalent of 225o or pi + pi/ 4 = 5/4 * pi

x - pi/2 = 5/4 pi

x = 5/4 pi + pi/2

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8 0

3 years ago

use the graph below to answer this question: find the average rate of change for the given function from x=1 to x=2.

denpristay [2]

Answer: D. 2

Step-by-step explanation:

The question is asking for the rate of change from x=1 to x=2. Remember that the rate of change is also the slope, which can be seen as $\frac{rise}{run} or \frac{y}{x}$ . The rise would be going up/down the graph and the run would go left/right of the graph. Let's look at where x=1 and x=2 on the graph.

First, look at where the line falls between x=1 and x=2. Then, on where x=1, go up, then right on the graph, until you find the point where x=2. In this case, the rise over run is $\frac{2}{1}$ . This can be simplified to 2.

Therefore, the answer is 2.

I hope this helps!! Pls mark brainliest :))

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3 years ago