65.77π x 663.23455π / 9π
= (65.77 x 663.23455 / 9) π
= 4,846.770706... π (rounded)
= 15,226.57924 (rounded)
Answer:
a 23
Step-by-step explanation:
Answer:
14th term of geometric sequence 7, 28, 112 is 469762048
Step-by-step explanation:
Geometric sequence : 7, 28, 112, .....
First term = a = 7
Common ratio = r =![\frac{a_2}{a_1}=\frac{a_3}{a_2}](https://tex.z-dn.net/?f=%5Cfrac%7Ba_2%7D%7Ba_1%7D%3D%5Cfrac%7Ba_3%7D%7Ba_2%7D)
Common ratio = r =![\frac{28}{7}=\frac{112}{28}=4](https://tex.z-dn.net/?f=%5Cfrac%7B28%7D%7B7%7D%3D%5Cfrac%7B112%7D%7B28%7D%3D4)
Formula of nth term =![a_n=ar^{n-1}](https://tex.z-dn.net/?f=a_n%3Dar%5E%7Bn-1%7D)
Substitute n = 14
So,![a_{14}=7(4)^{14-1}](https://tex.z-dn.net/?f=a_%7B14%7D%3D7%284%29%5E%7B14-1%7D)
![a_{14}=469762048](https://tex.z-dn.net/?f=a_%7B14%7D%3D469762048)
Hence the 14th term of geometric sequence 7, 28, 112 is 469762048
The answer for number 3 is 96.7 if you want the work shown I would recommend you to download the app Socratic and for number six you multiply.75x14 then also multiply.35x7 then add add up the answers which will be 12.95 then you subtract that from 15 the answer is $2.05
Answer:
$72
Step-by-step explanation:
100 - 10% = 90
90 - 20% = 72