Sunday
October 26, 2014

Homework Help: algebra(check)

Posted by Marissa on Friday, August 24, 2007 at 10:39am.

I'm pretty sure these are right but I just want to check.

1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7
a.143
b.136
c.140
d.133
answer=b

2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15...
a.an=n+6
b.an=6n+9
c.an=6n-9
d.an=n-3
answer=b

3)Find the two arithmetic means between 4 and 22
a.10,16
b.8,16
c.8,12
d.13,13
answer=a

4)Simplify:Find Snfor the arithmetic series in which a1=3,d=1/2,and an=15
a.225
b.9
c.45
d.210
answer=b

5)I dont know how to type this but its like this in my book.
Find; 8 is on top of the sigma notation and k=3 is at the bottom(40-3k) is on the right side
a.45
b.282
c.-90
d.141
answer=d

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

algebra - I'm pretty sure these are right but I just want to check. 1)Find the ...
algebra - I'm pretty sure these are right but I just want to check. 1)Find the ...
algebra - I'm pretty sure these are right but I just want to check. 1)Find the ...
algebra - 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 ...
math - Hi I need someone to check my answers I'll show whatever work I have but ...
Math ( Can You check my Work?) - 1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an...
PreCalc - 1) Determine the value of r (put this number in the first blank) and ...
Mathematics : Arithmetic Sequence - The 5th term and the 8th term of an ...
algebra - can you check my answers please? What are the first three terms of the...
Algebra-Please check - We're learning arithmetic sequences-please check this for...

Search
Members