ImmortalFusedZamasu ImmortalFusedZamasu

02-07-2018
Mathematics

contestada

Please Help??

What is the sum of the last four terms of the series 7 + 9 + 11 + ..... + 21?

A. 72

B. 40

C. 112

Respuesta :

jdoe0001 jdoe0001

02-07-2018

well, if you notice, is just an arithmetic sequence, is adding 2 to get the next term.

so the last term is 21, so the one before that has to be 21-2 or 19, and the one before that 17 and the one before that 15.

15+17+19+21.

Answer Link

Otras preguntas

Please help me out with this asap.

Greenland is covered by a continental

A construction crew is lengthening a road that originally measured 44 miles. The crew is adding 1 mile to the road each day. The length, L (in miles), after d d

Can someone help me with this please

one of your friends has put on his her best effort and has been honored for the title " the best player of the session" by his sports club. write him \ her a c

Find the domain. f(x) = −4x(x − 1)(x − 3)

Step by step please :)

Expalin two advantages of Marginal Costing.

Central Asia and Afghanistan is dominated by which biome (environment)? Steppe Mountains desert All of the above

Puan Hamidah bought satay from a stall for her children. Her eldest and youngest children ate 1/6 and 0.25 of all the satay respectively. The rest of the satay