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

Help quick!! The graph of the function f(x) = –(x + 6)(x + 2) is shown below. On a coordinate plane, a parabola opens down. It goes through (negative 6, 0), has

What factors differentiate tropical wet climates from other climate regions? A:high temperatures and little precipitation B:low temperatures and no vegetation C

Show steps if you can please!!

what is the answer to 5z+3n-z2

What are the main postulates of Bohr's model?

By using force to end rebellions during the revolutions of 1848, what idea did European monarchs reinforce

A customer at a Mexican- style restaurant orders his burrito without cheese because he had a milk allergy. Which should the food worker do next? A. Brush the ch

y = |x| translated half a unit to the left y = |x| translated half a unit downward y = |x| translated half a unit to the right. y = |x| translated half a unit u

More points for easy questions

What is the value of a + b?