Express the series using sigma notation. -8 + 4 - 2 + 1.

-12

Step-by-step explanation:

I believe you want the "sum of the series," because that's what you get from "sigma notation."  Two cases here:  infinite series and partial series.

If you wish to find the sum of the infinite series whose first term is a = -8 and whose common ratio is r = (-1/2), use the formula

                                             a

sum of infinite series =

                                          1 -  r

which here comes to

                                              -8

sum of infinite series = = -8/(3/2) = -12

                                         1 - (-1/2)

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3

the first one

step-by-step explanation:

just id the test.