math

  1. N

    Basic math equation help.

    In the equation x = n / f n is 1 kg m^-2 and f is 1 kg m^-1 What is x? This is just confusing my poor brain, any help to understand would be much appreciated. I put what I thought the answer was as x = 1 kg m^2 but I'm told the numerical value is correct but the unit is incorrect...
  2. M

    GCSE Maths | iGCSE FREE MATH

    Hey! For those who are interested in GCSE and iGCSE MATH, Welcome to my new educational channel MATH SCIENCE You can search me in Youtube as Math Science by Daniel Dallas or go to the link below: https://www.youtube.com/channel/UCRzKVx64ciq1417ey1x4TRg This...
  3. S

    Looking for someone smarter than me :(

    Hello. So I have this weird task given to me (at least for me, it's not understandable) and as far as I know, all of my classmates were struggling with it too. Could someone please explain how do I do this kind of a task? My example is here...
  4. C

    Learn Math in English

    How can I learn Math by English? I have learned English 1 month ago.
  5. J

    Gradient and it's effect in math and statistics?

    I have a very basic understanding of what a gradient is, but what is it's effect in math and statistics? (I know this question is maybe to broad)
  6. tahirimanov19

    Old Soviet Time Math Literature

    I found web-site about soviet times, where you can download soviet time literature. Here is Link for math books: https://sovietime.ru/matematika
  7. Y

    I did all the math... this is Pi. I can see it.

    We set the circle to an Area, but only because we suspect the Area to be an equal Area. Since two shapes relevant have different sized arcs of the same radius, we know after doing the pi math using the new Pi that it's perfect, because it shows us... but we have to look...
  8. J

    Math saves the day!

    Hey everyone! I wanted to share a math experience I had that both saved my family financially AND probably saved the job of a store worker. Here is what happened. My families finances were VERY tight. My mother came to me and asked if I could use my math skills while she was shopping to...
  9. B

    a simple system with an impossible answer...

    first post here... currently an applied math student attending Stonybrook university. The question seems so simple. But I am unable to find an answer. jack can do 3 chemistry problems and 6 math problems an hour. Jill can do 4 chemistry problems and 7 math problems an hour. How long must...
  10. V

    Hello!!! Is this problem transformable into math equation?

    Hello to all, First, thank you for any help you could provide me with. My name is Vedouze and I have tomorrow a university business degree presentation. I am panicking... I am bumping into how to solve the following problem. I feel there must be an equation to get the exact / optimum team...
  11. F

    Help with Math needed? no problem!

    Hello dear friends! I started a Youtube channel a day ago and I am uploading videos daily. I am currently doing a playlist on Logic Abstract algebra. If you guys need help, check out some of my videos. I try to make them as detailed as possible since I myself am a student and find some of the...
  12. M

    Simplify Surds

    Hi I have to simplify this square root fraction: 10/√5 + √20 The answer is 4√5, but I do not get to that answer. Please help.
  13. J

    Math Debate

    Hello, So, me and my older brother are in a math debate. The debate is about an article we saw. The article states that many people are being stumped by simple math problem. The math problem is the following: 6÷2(1+2) My brother did it this way: 6÷2(3) 6÷6 1 I did it this...
  14. M

    For what natural n is the number (5^(2*n+1))*(2^(n+2))+(3^(n+2))+(2^(2*n+1)) divisibl

    For what natural n is the number (5^(2*n+1))*(2^(n+2))+(3^(n+2))+(2^(2*n+1)) divisible by 19? I get that (19*(50^n + 12^n) + (50-19)(50^n +....+19^n). So it means that n can be any natural number? Or I did some mistake there?
  15. N

    Can you solve this math test?

    A) 3 + 3 × 3 - 3 + 3=? B) 3 + 3 × (3 - 3) ÷ 3=? Is the answer for both A & B the same? Sent from my SM-J727T1 using Tapatalk
  16. N

    Math Challenge

    How do you add up 27 and 48 in your head? My method 20 + 40=60, 60 +7=67, 67+8=75. What is your method?
  17. K

    Hi. New user here with a math question

    First off, if you're unfamiliar with Texas hold 'em poker, let me tell you how it's played. First, each player is dealt two cards and there's a round of betting. Next, 3 cards are put on the table that belong to all the players and another round of betting, then a fourth card on the table and...
  18. M

    proof of property

    Let a 3 × 3 matrix A be such that for any vector of a column v ∈ R3 the vectors Av and v are orthogonal. Prove that At + A = 0, where At is the transposed matrix.
  19. Z

    A language encrypt as can ever decrypt it with math

    Hello everyone, An impossible message has deciphered in classical mathematics 'the language of my books' let Zn = (10 + 325 * n) ^ 1 / (3 * 10 * 10 ^ n * n ^ n) Z 0 = ln-10 Z1 = A Z2 = B Z3 = C ... Zj = Z Zj + 1 = A Zj + 2 = B ..... Zn AND I will write books with a mix of Zn...
  20. Z

    a Zn suite that begins with an anomaly and can not be made with the classical math

    Hello log (2 ^ t + t ^ 2-64) = t (1-log (5)) I put i = t with i ^ 2 = -1 So log (2 ^ i + i ^ 2-64) = i (1-log (5)) so log (2 ^ i-65) = i (1-log (5)) ln (2 ^ i-65) + i * ln (5) -i = ln (2 ^ i-65) + ln (5-i) = -i 0 ln (((2 ^ i-65) * 5 ^ i) = i therefore (2 ^ i-65) * 5 ^ i = exp (i) =...