Enter the correct letter to match each summation expression with the property or n
Σca;
is equal to
n(n + 1)(2n + 1)
6
n
is equal to
b n(n + 1)
2
i=1
n
n
Σ
is equal to
«Σα;
i=1
i=1
n
3
is equal to
den
i=1
n
is equal to
[ n(n+1) 12
2
n )]
i=1

18.36. give me brainliest!

step-by-step explanation:

you have to multiply 1.53 by 12 so the equation is 12x1.53 and then that is your answer.

answer: the correct one is a

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.