arithmetic pattern and sequence

Question

maricrissolisTyro

Asked: April 17, 20212021-04-17T14:10:40+00:00 2021-04-17T14:10:40+00:00In: Middle School/Junior Secondary School

Given the formula for the arithmetic sequence, determine the first 3 terms and the 8th term. Also state the common difference.
an = -4n + 3

You must login to add an answer.

Need An Account,

acedstud · Accepted Answer · 2021-04-17T20:48:36+00:00

Best Answer

acedstud

Given the arithmetic sequence, $a_n=-4n+3$

The first term is given by $a_1=-4(1)+3=-4+3=-1$ .

The second term is given by $a_2=-4(2)+3=-8+3=-5$

The third term is given by $a_3=-4(3)+3=-12+3=-9$

The 8th term is given by $a_8=-4(8)+3=-32+3=-29$

Notice from the 1st, 2nd, and 3rd terms that each term is made from the previous term by subtracting 4. So the common difference is -4.

AcedStudy Latest Questions