Okay, the number above the sigma(4) indicates what value you go to, and what's below the sigma tells you where to start, and the stuff on the right is the expression you're using.
So we start with 1 and go to 4, adding all the values in between.
(2(1))^2 + (2(2))^2 + (2(3))^2 + (2(4))^2
2^2 + 4^2 + 6^2 + 8^2
4 + 16 + 36 + 64
120
Answer:
14/15
Step-by-step explanation:
have a great day :) also this anwser is 100% correct. i tested it.
Answer:
<h3>80.1 x 10 <em>7</em></h3>
Step-by-step explanation:
I hope this helps you
x^2+2x+8=0
x^2+2x+1+7=0
(x+1)^2= -7
(x+1)^2= i^2.7
x+1= i.square root of 7
x=-1+ i.square root of 7
Answer:
n=-2
Step-by-step explanation:
Because when you are looking at the numbers they drop by two, so the answer must be decreasing by n= -2.
