Step-by-step explanation:
Yes, it is Arithmetic sequence
Because
1/2 - 1 = 0 - 1/2=-1/2-0= - 1/2
Common Difference d = - 1/2
So first you would divide 1950/6 to find the amount for one year of their age.
Then you would multiply that by the ages, which should get you 4 numbers, then you all those numbers together. Try 9750.
Answer:
The volume would be approximately 2143.573333...
The distance is about 5.8 units.
Subtract 128.5 from 180 degrees and you get 51.5. Then add 51.5 plus 13, you get 64.5. Subtract 64.5 from 180 and you get 115.5. A triangle's angles all added together equals 180.
