Answer:
64 points/80 points
80/100
Step-by-step explanation:
ez
An = a1 + (n-1)*d
n = term to find = 30
a1 = first term = 20
d = common difference = 2
a30 = 20 + (30 - 1) * 2
a30 = 20 + 29 * 2
a30 = 20 + 58
a30 = 78
sn = (n (a1 + a30)) / 2
s30 = (30(20 + 78) / 2
s30 = (30(98) / 2
s30 = 2940/2
s30 = 1470 <===
X = 3 Right side length!
I hope this helps. :)
Answer: I believe the answer is 59 Items
Step-by-step explanation: 28 + 19= 47
47+12= 59