The sum of a series is calculated with the following formula:
n/2(2a+(n-1)d) where n is the number of terms, a is the first term and d is the difference between the terms.
so for this series:
n/2(2*64+(n-1)*-2)=0
n(130-2n)=0
n=0 (not valid because n<1) n=65
so the 65th term gives the sum 0
I believe its 120 minutes
It is false or 8/9 is equal to 1
2y=-6x+14.( move x to the other side). Y=-3x+7.(divide by 2). In standard form y=Mx+b. Where m is slope. Here, -3 is the slope.
1824 the estimate is 1820