Your total is:1.458333333333333
First find the total of 2n by using the formula for summation:
( n(n+1))/2
Replace n with 24 and multiply the equation by 2 to get 2n:
2(24(24+1)2) = 2(24*25/2) = 2(600/2) = 600
Now find the total for -3 using the summation for a constant, which is multiplying n by the constant:
-3 x 24 = -72
Now add both summations together:
600 + -72 = 600 - 72 = 528.
The answer is 528.
You know that Sue has 55 inches of ribbon. If she wants to split it into 6 EQUAL pieces, she has to divide. 55 divided by 6 is 9.7 . The 6 equal pieces will have to be 9.7 inches long.
