jeromystarkey jeromystarkey

22-05-2018
Mathematics

contestada

the fourth term of an arithmetic sequence is 141, and the seventh term is 132. what is the first term?

Respuesta :

sqdancefan sqdancefan

22-05-2018

The 1st, 4th, and 7th terms make an arithmetic sequence of their own. The 4th term is the average of the 1st and 7th, so ...
(1st +7th)/2 = 4th
1st + 7th = 2×4th
1st = 2×4th - 7th

The first term is ...
2*141 - 132 = 150

Answer Link

Otras preguntas

what is 1/10 of 1000

what is 1/10 of 1000

Tanisha and Rachel had lunch at the mall tanisha ordered three slices of pizza and two colas Rachel ordered two slices of pizza and 3 colas Tanisha bill was si

how many moles are represented by 250g of platinum?

Solve the following equations enter x-coordinate of the solution round to the nearest tenth 5y+2y=22 -2y+6y=3

A box has sides with these measures: length 10 cm, width 8 cm, height h cm. If the volume is 400 cm3 , find the measure of the height. You may use the equation

31 divided by 2 0ver 4 times 2 equals

what was the Powhatan confederacy and how did the group interact with the British settlers

This reproductive structure can be considered an advancement over spores. It protects the embryo from injury and drying out. It also provides food for the embry

Why should you always finish reading difficult content? a. Difficult content is usually covered on the test c. Difficult content usually contains important voca