/sci/ - Science & Math » Thread #11572450

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HW help please i am retarded

Anonymous Thu 16 Apr 22:15:27 2020 No.11572450 View Reply Original Report

Quoted By: >>11573187 >>11573385 >>11573441

Walt made an extra $10,000 last year from a part-time job. He invested part of the money at 2% and the rest at 3.75%. He made a total of $270.00 in interest. How much was invested at 3.75%?

Anonymous

Anonymous Thu 16 Apr 2020 22:18:40 No.11572465 Report

Quoted By: >>11572483

$ \delta \, \epsilon \left ( 0,1 \right ) \\ \displaystyle \prod_{k=0}^{n} \left ( 1 + \delta ^{2^{k}} \right ) = (1+ \delta)(1+ \delta ^{2})(1+ \delta ^{4}) \cdots (1+ \delta ^{2^{n-1}})(1+ \delta ^{2^{n}}) \\ (1- \delta) \prod_{k=0}^{n} \left ( 1+ \delta ^{2^{k}} \right ) = (1- \delta)(1+ \delta)(1+ \delta ^{2})(1+ \delta ^{4}) \cdots (1+ \delta ^{2^{n-1}})(1+ \delta ^{2^{n}}) \\ = (1- \delta ^{2})(1+ \delta ^{2})(1+ \delta ^{4}) \cdots (1+ \delta ^{2^{n-1}})(1+ \delta ^{2^{n}}) \\ = (1- \delta ^{4})(1+ \delta ^{4}) \cdots (1+ \delta ^{2^{n-1}})(1+ \delta ^{2^{n}}) = (1- \delta ^{2^{n}})(1+ \delta ^{2^{n}}) = 1- \delta ^{2^{n+1}} \\ \\ \boxed{(\delta ^{2^n})^2 = \delta ^{2 \cdot 2^n}=\delta^{2^{n+1}}} \\ \displaystyle \prod_{k=0}^{n} \left ( 1+ \delta ^{2^{k}} \right ) = \dfrac{1- \delta^{2^{n+1}}}{1- \delta} \\ \displaystyle \lim_{n \to \infty} \prod_{k=0}^{n} \left (1+ \delta ^{2^{k}} \right ) = \lim_{n \to \infty} \dfrac{1- \delta^{2^{n+1}}}{1- \delta} = \dfrac{1}{1- \delta} $

Anonymous

Anonymous Thu 16 Apr 2020 22:23:25 No.11572483 Report

Quoted By: >>11573303

>>11572465
fuck you

Anonymous

Anonymous Fri 17 Apr 2020 02:54:16 No.11573187 Report

Quoted By:

>>11572450
https://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-and-ratio-word-problems.faq.question.885119.html

Anonymous

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Anonymous Fri 17 Apr 2020 03:46:43 No.11573303 Report

Quoted By:

>>11572483

Anonymous

Anonymous Fri 17 Apr 2020 03:48:55 No.11573309 Report

Quoted By:

Dude you're doomed.

Anonymous

Anonymous Fri 17 Apr 2020 03:57:41 No.11573336 Report

Quoted By:

4000

Anonymous

Anonymous Fri 17 Apr 2020 04:15:52 No.11573385 Report

Quoted By:

>>11572450
Assuming it is just straight up 2 and 3.75 and not some compounded faggotry or whatever
x(.02)+y(.0375)=270
x+y=10000
now you have 2 equations and 2 variables, solve it (the answer to the question is the value you get for y)

Anonymous

Anonymous Fri 17 Apr 2020 04:32:51 No.11573420 Report

Quoted By: >>11573477

5'7 then was average height, I don't understand what this pic is supposed to mean? Churchill was like 5'6

Anonymous

Anonymous Fri 17 Apr 2020 04:44:53 No.11573441 Report

Quoted By:

>>11572450
Imagine having trouble with middle school math

Mary

Mary Fri 17 Apr 2020 05:04:19 No.11573477 Report

Quoted By:

>>11573420
Hitler was 6'3"

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