Answer:
5040
Step-by-step explanation:
The given series is :
24 + 48 + 72 + 96 +...+ 480
The first term, a= 24
Common difference, d = 24
The last term, ![a_n=480](https://tex.z-dn.net/?f=a_n%3D480)
Let there are n terms in the AP.
So,
![a_n=a+(n-1)d\\\\480=24+(n-1)24\\\\480=24+24n-24\\\\n=20](https://tex.z-dn.net/?f=a_n%3Da%2B%28n-1%29d%5C%5C%5C%5C480%3D24%2B%28n-1%2924%5C%5C%5C%5C480%3D24%2B24n-24%5C%5C%5C%5Cn%3D20)
There are 20 terms in the series. The sum of 20 terms is :
![S_{20}=\dfrac{n}{2}(2a+(n-1)d))\\\\=\dfrac{20}{2}\times (2(24)+19(24))\\\\=5040](https://tex.z-dn.net/?f=S_%7B20%7D%3D%5Cdfrac%7Bn%7D%7B2%7D%282a%2B%28n-1%29d%29%29%5C%5C%5C%5C%3D%5Cdfrac%7B20%7D%7B2%7D%5Ctimes%20%282%2824%29%2B19%2824%29%29%5C%5C%5C%5C%3D5040)
So, the sum of the given arithmetic series is equal to 5040.
A) the length on the top is 2ft. You were supposed to subtract 11ft from 9ft. The length on the bottom is 17. You get that by adding 5ft and 12ft
b) then you add up all the lengths together.
2+5+12+11+9+17= 56ft
Answer:
g(x) = 5 – x
Step-by-step explanation:
Answer:
43:100
Step-by-step explanation:
this is the simplest form