Answer:
480
Step-by-step explanation:
Sn = n÷2 × (2a + (n-1)d)
n = 20 a = -14 d = 4
S20 = 10 × (-28 + 19 × 4) = 480
-15u+30
Have a great day! :)
Answer:A
Explanation:
d = √((5 – 0)2 + (2 – 0)2
d = √(25 + 4) = √(29) ≈ 5.385
Answer:
10y/21 - 2/6 simplifies to 10/21(y) - 1/3
Step-by-step explanation:
I hope this helps.