Answer:47/20 or 2.35 in decimal form
Step-by-step explanation:
Hello :
the common ratio is r = -95-(-100)=5
the general terme is : un= u1+(n-1)r
un = -100 +(n-1)(5)
un =-100 +5n-5
un = 5n-105
The last term is : 100
un =100
5n-105 = 100
5n =205
n = 41 (Number of terms)
The last term is : u 41
<span>the sum is : S= (41/2)(-100+100)=0</span>
Answer:
D) n<5
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
-2 = 4r + s Subtract 4r from both sides
-2 - 4r = s Switch the sides to make it easier to read
s = -4r -2
