ananduus143 ananduus143

02-07-2021
Mathematics

contestada

sum of first n terms of an ap sequance is 3n2+5n.what is the sum of its first n+1 terms.find the sum of its first 10 terms.

Respuesta :

loconte loconte

02-07-2021

Answer:

a) 3n^2 + 11n + 8

b) 350

Step-by-step explanation:

10) 3(10^2)+ 5*10 = 350

n+1) 3(n+1)^2 + 5(n+1)

3(n^2 + 2n + 1) + 5n+5

3n^2 + 6n+3 + 5n + 5

3n^2 + 11n + 8

Answer Link

Otras preguntas

How to divide using area model

Can someone help me with this

What is the oxidation state of fluorine (F)? The Periodic Table A.-2 B. +1 C. -1 D. +2

Cómo puede contribuir el baloncesto a tu vida y al medio ambiente? Ayudaaa porfaa

PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!!

divide 111001 by 1101

Why does Walt Whitman use the word singing in the title "I Hear America Singing"?

can radiowaves penetrate clouds

which expression is equivalent to 2 x 2^3 x 8 A.) 2^6 B.) 2^7 C.) 2^8 D.) 2^9

Determine which suffix corresponds to the following mnemonic aid. When the root is a full word except for a final e, the forms usually are spelled with -ible. -