# Reiny

Questions and answers by visitors named Reiny

## Questions

1. ### Ms. Sue was a kind, gentle, and good person that I had the privilege of knowing through this webpage. I have been a tutor for about 12 years on here, and was always impressed by the patient and competent way she helped students.

You will be missed Reiny

2. ### Peter, I found your question interesting and have been messing with it for a while

www.jiskha.com/questions/1789041/Ethel-went-to-the-farmers-market-to-buy-some-eggs-not-in-a-dozen-cartons-on-the I finally made up a short computer program using a silly old

3. ### take a look at this question

http://www.jiskha.com/display.cgi?id=1446147947 Am I guilty of overkill or over-thinking this ? Surely there has to be an easier way.

5. ### re

http://www.jiskha.com/display.cgi?id=1368707176 I have a solution, but what a mess. Before I type it all out, let me know if you still need the solution. I certainly don't feel like typing it all out unless you will actually look at it.

6. ### have been looking at your post ...

http://www.jiskha.com/display.cgi?id=1357047578 interesting question... let the altitude of 12 hit base a let the altitude of 14 hit base b then (1/2)(12)a = (1/2)(14)b 6a = 7b a = 7b/6 let the third side be c and its

7. ### I took some time to work out your rather "nasty" Calculus question.

Take a look at it and see if it matches your expected result. http://www.jiskha.com/display.cgi?id=1300878253

8. ### Several student tonight have asked me how I create the √ symbol

to create √ symbol on a PC, hold down the Alt key, and at the same time press 251 on the number pad, then release the Alt key on Mac, hold down the Option key, and press V, release the

9. ### You now have 6 different posts going for the same "cake question"

I am not going to keep going back to see which one you replied to. Stay with one posting please. I just notice one way down the list where you did part a) Calculate the area on top of the

click on "Post a New Question" above to post your problem. Here is your question : Math - marie flore joseph, Monday, April 5, 2010 at 10:37pm the difference of the squares of two

11. ### Happy Pi Day to all math "nerds"

Even Google changed their log today. http://www.squidoo.com/PiDay

12. ### Even though you mean well, your last three responses have been either incomplete or incorrect.

The one to http://www.jiskha.com/display.cgi?id=1258225501 is totally off the mark. Please make sure you are familiar with the topic before replying.

13. ### You stated on Saturday that you understood my solution as far as part a) and b) were, so let me just recap what we did.

(I will not repeat the actual question) My Solution: Suppose we label the point of contact P(x,y). I bet P is in the first quadrant. but

14. ### "100 bushels of corn are divided among 100 men, women, and children. Men receive 3 bushels each, women 2 bushels and children 1/2 bushel each. How can the bushels be distributed? is there more than one solution? if so, find the other solutions."

let the

http://www.jiskha.com/display.cgi?id=1224212047 I did indeed make two typing errors, which even though they do not change the actual answer, nevertheless would have caused confusion. I will

16. ### At 11:37 and at 12:24 you posted the same question

the earlier one was answered correctly by drwls by accepting your question the way you typed it. my solution is based on the assumption that your denominator was e^(t-7), an invalid assumption.

17. ### 3(2+3-2(4-5)2-1)-3(2+4(4-2)-8+3(2-5)+1-2)1-3)+4-5

rather silly question, and some of it makes no sense eg look at the first part ......-2(4-5)<b>2</b>-1 does this end up -2(-1)(2) ? or did you forget an operator before the last 2? there is a similar

18. ### other than factoring out the 9 there is really no simplification that can be made here

9sqrt6 - 9sqrt2 =9(√6 - √2) can someone help me simplify: 9sqrt6 - 9sqrt2

19. ### This is "college" math?

Anyway... let the smaller number be x, and the larger number be x+8 then x + x+8 < 12 this is easy to solve, let me know what you got. the sum of two numbers is less than 12. The second number is 8 more than the first.what are the

20. ### Set it up this way:

Let the number of students be x let the number of rows be y then the number of students per row is x/y This results in 2 equations from your data: (x/y+1)(y-2) = x and (x/y-1)(y+3 = x Solve these two, gets a bit messy at first but it

21. ### These are very easy to set up with a "chart"

---------Distance-----Rate---Time (D=RxT) slow way --6x----------x-------6 fast way - 5(x+7)-----x+7------5 so 6x = 5(x+7) 6x=5x+35+ x=35 The speed on the slower trip was 35 mph, and on the return trip 42 mph A

22. ### break it down into cases

at most one day of rain in 3 days to me means we could have: norain norain norain ----> (1/3)^3 = 1/27 rain norain norain -------> 2/3(1/3^2 = 2/27 norain rain norain -------> same as above = 2/27 norain norain rain -------> same as

23. ### <Thanks to computers, writing may soon become a lost art.>

Leo, a similar prediction is often made about arithmetic since the invention of the calculator. in one of Isaac Asimov writings they discover a man who is actually able to perform an operation like

24. ### You did not watch your units, you are mixing inches and feet

Your equation should have been 1/2 = 1/di + 1/120 (I changed 10 feet to 120 in) solve this for di and you get 2.03 inches. Please help me I am so confused I think I am losing my mind. The focal

25. ### On an x-y grid, label them N-S, E-W, draw a line from the origin to the right and label it 425 (you are going East)

From the end of that line draw a vertical line upwards of 40 (you are going North) Use an approximate scale, realizing that 425 is just about

26. ### I hope that the diagram I have drawn for myself matches the one in your question.

I have a triangle with sides 20 and 10 and an angle of 120º between them By the cosine law I found the third side to be 26.4575. You said you found the maginitude, I hope we

27. ### I don't know the physics behind Snell's Law, but I can do the math

Snell's Law says sin(angle of incidence)/sin(angle of reflection) = refractive index since you know the two angles... sin45/sin27 = refractive index =1.5575365 so for an angle of refection

28. ### Please take a look at DEVON's trig equation at 9:14

I must be missing something obvious. If the second had been 3sin 2x it would be a straight forward question. The way it stands I was able to "reduce" it to the equation 8sin^4 x - 8sin^2 x + 3sin x + 2 = 0

29. ### how about (5-3)x2 + 8(5-2) ?

To me these are really just "puzzles" and do not actually require much mathematical ability. The best and often only way is to by 'trial and error'. what is the rule when grouping numbers? example I want the answer to be 28. 5 -

30. ### I trust you know about y = mx + b

Realize that when you are given the x or y intercepts, you are really just given two points, in your case the points (4,0) and (0,-2) So it is easy to find the slope, (-2-0)/(0-4) = 1/2 Take it from there Determine the

31. ### Complimentary angles add up to 90º

So translate the English into Math. if you let the unknown angle be x then "the measure of the compliment of the angle" -----> 90-x "10 degrees less than three times the measure of the angle" ----> 3x - 10 so....... 90-x

32. ### according to my interpretation of the question in October they would collect:

the 10% of the August sales = .10(\$10,000) the 20% of the Sept sales = .20(\$20,000) and the 70% of the Oct sales = .70(\$30,000) Do the arithmetic and add them up A project has an

33. ### I assume the poster was trying to type "oblique asymptote"

from your answer of 3x+2 + 7/(x-1) we can conclude that there is an oblique linear asymptote of y = 3x + 2, and a vertical asymptote at x = 1 for the original function given. how do u find obblique

34. ### Is there any way that the postings could be numbered?

The post below this one by TONY obviously refers to a previous posting of his 8 steps below. I know the URL has a number behind each particular post, and each post can be identified by a title and

35. ### let f(m)=m^3 + 3m^2 + 3m + 1

notice f(-1) = 0, so m+1 is a factor. Using division, the answer is m^2 + 2m + 1 which factors once more to (m+1)(m+1) so you have (m+1)^3 = 0 and then m = -1 Are you familiar with Pascal's triangle? Did you notice the pattern

36. ### There is no function equation for the Fibonacci numbers, you have to use a Recursion formula.

F(n) = F(n-1) + F(n-2) for n>2 and F(1)=1, F(2)=1 what is the equation for the fibonacci sequence