Answer:
positive
Step-by-step explanation:
The easiest way is to use (& to memorize) the sum formula for a AP:
Sum = 1st term added to the last term & multiplied by half the number of terms
S = (a+l)n/2
S = (5 + 53)(7/2) = 203
D is answer...........mmm
Answer:
z=12
Step-by-step explanation:
divide by 1/2 to get the variable z by itself