Answer:
930
Step-by-step explanation:
1) Once upon a time there was a bored kid in class who invented a super cool formula
This formula goes like this:
n(n+1)
where n= the sum of the first n numbers in a series
so
30(30+1)=30(31)=930
930
You need to post pic of show problem
Answer:
7.5 years
Step-by-step explanation:
P = $5000,
R = 4.25%,
A = $6593.75,
N =?
SI = A - P = 6593.75 - 5000 =$1593. 75
![\because \: SI = \frac{ PNR}{100} \\ \\ \therefore \: 1593.75 = \frac{5000 \times N \times 4.25}{100} \\ \\ \therefore \: 1593.75 \times 100 = 21,250 \times N \\ \\ N = \frac{159375}{21250} \\ \\ N = 7.5 \: years \:](https://tex.z-dn.net/?f=%20%5Cbecause%20%5C%3A%20SI%20%3D%20%5Cfrac%7B%20PNR%7D%7B100%7D%20%5C%5C%20%20%5C%5C%20%20%5Ctherefore%20%5C%3A%201593.75%20%3D%20%20%5Cfrac%7B5000%20%5Ctimes%20N%20%5Ctimes%204.25%7D%7B100%7D%20%20%5C%5C%20%20%5C%5C%20%20%5Ctherefore%20%5C%3A%201593.75%20%5Ctimes%20100%20%3D%2021%2C250%20%5Ctimes%20N%20%5C%5C%20%20%5C%5C%20N%20%3D%20%20%5Cfrac%7B159375%7D%7B21250%7D%20%20%5C%5C%20%20%5C%5C%20N%20%3D%207.5%20%5C%3A%20years%20%5C%3A%20)
All I saw there was area so just multiply 10.2 and 17 which is 173.4