Find the first five terms of the sequence described. a1=3, an+1=an+5 8. Find the sum of the infinite series, if it exists. 100+20+4+… 9. Find the sum of the geometric series. ∑k=232[9(−1)k−1] 10. Find the indicated term of the arithmetic sequence. Find a23 in the sequence −18, −34, −50, −66, … 11. Find the first three terms of the arithmetic series described. n=16, an=15, Sn=−120 12. Find the first three terms of the arithmetic series described. n=15, an=45, Sn=45 13. Find the sum of the infinite series, if it exists. −270+135−67.5+… 14. Find S9 for the geometric sequence: an=2∙5n−2

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

i'm a sophomore in connections, i'd recommend checking on jishka.com they have a large range of questions and answers from our school.