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

Klaus was replacing the roof on his house. He used 420 nails to attach all the pieces of wood. Each piece of wood needed 7 nails to hold it in place. He used 40

When Oklahoma first became a state, it was governed by a(n) __________ majority. A. sooner B. Socialist C. independent D. Democratic

factorize 16x - 6 and show correct and full working.

A(n) _____ meaning refers to the literal definition of a word.

The dot plot represents the prices of different brands of chocolate bars. Each dot represents a different brand of chocolate. What is the most common price for

How did the middle class life change the Victorian Era

Choose the answer. Which sentence correctly punctuates its participial phrase?98 points for who answers this A. Subjected to ridiculous laws, Jews were prevente

Which of these pairs would form an ionic bond? A. K and Br B. C and H C. H and O D. Cu and Cu

what is 5 times 10 to the sixth power

25 - 4x = 15 - 3x + 10 - x