math

  1. B

    Compound Interest Math Help!(PV/FV)?

    1) If the nominal rate of interest paid on a savings account is 2% compounded monthly, what is the effective rate of interest? 2) What is the effective rate of interest on a credit card that calculates interest at the rate of 1.8% per month? Any Help Appreciated!
  2. K

    math quiz! please help?

    Which of these is a correct step in constructing congruent angles? Answer use a straightedge and draw an arc across the first arc from a leg use a compass and draw an arc across both the legs of the given angle use a compass and join points to make the new leg of the congruent angle use a...
  3. A

    Math help? Lol I have no idea what this is.?

    9^x - 9^(x - 1) lolwut?
  4. H

    Math Riddle Help! (20 characters)?

    Find a number consisting of 9 digits in which each of the digits from 1 to 9 appears only once. This number should satisfy the following requirements: a. The number should be divisible by 9. b. If the most right digit is removed, the remaining number should be divisible by 8. c. If then...
  5. R

    math help! practice quiz online?

    The perimeter of a rectangle is 200m. The width of the rectangle is 20 feet less than the length. What are the dimensions of the rectangle? width = 40m, length = 20m width = 40m, length = 60m width = 10m, length = 20m width = 200m, length = 200m One line has a slope of 6 and a y-intercept of...
  6. S

    6x-1/5=3/1 Math Help Quiz?

    Math Help Please !
  7. P

    You good at math? Answer this than!?

    a fitness center offers two payment options for thier clients, the "Member Option" Requires you to pay 42$ to become a member . after that you pay only 2$ per fitness class. the non member option requires you to pay 5.50$ per fitness class . for what number of classes would both options cost...
  8. S

    Ignoring Christian or other doomsday prophecies, and just using math, what is...

    ...the probability of the human? race surviving another 10 years? You need to know a couple things at least: the limits of our resources, the probability (frequencies) of disease, famine, natural disasters and war occurring, and the impact of testosterone on any given population. Also the...
  9. M

    7th grade math two step equations help?quiz tomorrow!?

    I need help with these: 2/3 b+ 4 = 5 a/4 - 2 = 3 1/5 z- 1 = 3 - 1/5b - 2/5 = -2 3/4 f+ 5=-5 7b +6 = 2b - 19 And what I mean is can you please solve them on a piece of paper and take a picture of it and upload it here because I wont understand it if you explain it on here. Please help I could...
    • Mack
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    • 7th equations grade helpquiz math step tomorrow
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    • Forum: Trivia & Polls
  10. M

    Poll: Math, Science or English?

    Which subject did you like? I hated chemistry (science) and especially algebra!!! I love English more!
  11. M

    Solve this simple but confusing math riddle !!?

    3 friends traveling in a bus fair is $70 for three of them, each of them pays $25 total becomes $75 the bus man returns $1 each, and the remaining $2 keeps himself , now each one has contributed $24. now if we add 24+24+24=72 and the 2 which bus man kept 72+2=74 where did the remaining $1 go?
  12. J

    In need of an interesting math topic?

    I am taking a math writing course. I need a topic to write about. It can be anything that is math related. Any suggestions?
  13. M

    Math Number Puzzle Combination/Riddle?

    You can ONLY use the following numbers: 11.3, 11.6, 12.9, 12.7, 11.5, 9.8, 9.4, 8.5, 8.4 The Challenge: The goal is to come up with as many SMALL combinations of numbers (using the numbers above), when averaged, equals to 11.5 For example: 11.3 + 11.6 + 11.6 / 3 = 11.5 (average) The is a fun...
  14. C

    I think I failed a REALLY easy math quiz?

    It's about freaking equations like 2x+7=8. I don't know what happened, it just.. UGH. I think everyone else got like 100% and I'm the only one who got 40% Why am I so stupid? And he also told us that we had to get it signed. I don't know my score yet, but I'm sure that I got at least one...
  15. M

    Math Number Puzzle Combination/Riddle?

    You can ONLY use the following numbers: 11.3, 11.6, 12.9, 12.7, 11.5, 9.8, 9.4, 8.5, 8.4 The Challenge: The goal is to come up with as many SMALL combinations of numbers (using the numbers above), when averaged, equals to 11.5 For example: 11.3 + 11.6 + 11.6 / 3 = 11.5 (average) The is a fun...
  16. K

    I have a MATH riddle, and I need HELP!?

    So this is the 1st problem: One of your friends is going N. for vacation. Your other friend is going S. for vacation. If one car is going 45 mph and the other is going 53 mph, and their destinations are 1,029 mi. apart,how many hours until the cars pass each other?
  17. M

    Math Riddle/Brain Teaser?

    So, I have to use the numbers 2, 3, 4, and 6 to make the number 86. The rules are this: -You can use any operation -You can use parentheses -You can use any function on a calculator -This includes factorials, exponents, or square roots -You have to use all numbers and not reuse them more than...
  18. M

    Math Riddle/Brain Teaser?

    So, I have to use the numbers 2, 3, 4, and 6 to make the number 86. The rules are this: -You can use any operation -You can use parentheses -You can use any function on a calculator -This includes factorials, exponents, or square roots -You have to use all numbers and not reuse them more than...
  19. J

    What is the answer to this math riddle?

    A cube that is 4x4 on each edge was dipped in blue paint. It is then sliced into cubes that are 1x1 on each edge. How many 1x1 cubes have 1 side painted blue, 2 sides, 3 sides or none? Good luck to whoever figures this out! 10 points for whoever figures it out!
  20. J

    Who can solve this math riddle?

    The Probability of a bus stopping at school within a 20 min. window is .8 ---- 4/5 ---- 80%. What is the probability of it stopping within a 5 min. window? (Hint or actually a more clear explanation of the riddle: So basically every 100 times you wait for the bus for 20 min., it will arrive 80...
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