Answer:
let the first term of an A.P. is 'a' and common difference 'd'
∴ 8th term = sum of the first 8 terms
a8 = S
a + 7d = 8/2(2a + (8 - 1)d)
a + 7d = 8/2(2a + 7d)
2a + 14d = 16a + 56d
16a + 56d - (2a + 14d) = 0
14a + 52d = 0
divide eq. by 14 we get ,
a + 3d = 0
and a + 3d = a4 = 0
Answer:
it is a
171 degrees
Step-by-step explanation:
+ The volume of each candle is : 6*5*14= 420 cm³
+ The company used 4620 m³, so we have 4620:420= 11 candles
That is for you, 11 candles
Answer: c) 19,807
<u>Step-by-step explanation:</u>
