Math grd12

4,596 results, page 19
  1. math

    Surface Area: 4r^2 41.25^2 S.A= 19.6 inches^2 Volume: 4/3r^3 4/3 1.25^3 V=8.2 inches^3 could someone check my math?
  2. Math #2

    If I had a math problem 2x^4 x y^-4 x z^-3 / 3x^2 x y^-3 x z^4. In simpler terms it would look like this: 2x^4 X y^-4 X z^-3 ------------------- 3x^2 X y^-3 X z^4 When I tried to solve this I got 6x^2 X y^-1 X 2^-7. Am I correct? If not could you please
  3. Math

    Ok we are doing distributive property in math and I'm so confused on some of the problems. the problems are: 9+(x-4) 5-4x-5/-4 4(3x-2y)-3(4x-3y) 7(r+s)-(r-s) 3y-2(x-2y) Thank you so much for your help. Ellie
  4. Math

    Okay. So i am getting frusterated I was given a math sheet. On it has the anwsers. I have tried to get my answer to match up, but I can't get it. COuld somebody please help me? 10-(2y-6)-y y is 8 *The answer is -8.* Thanks!!
  5. math

    Lucas' last 4 test scores were 88, 95, 92 and 81. 90% or better is an A. What would he have to get on his fifth math test to pull up his grade to a 90?
  6. math

    how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!
  7. algebra/common math

    how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!
  8. math

    if i bought a car for $18,500 and price was 35% off what was original price and how do I do the math
  9. to mRS.SUE

    BUT I DON'T UNDERDSTAND HOW YOU EXPLAIN IT!SO FOR MATH,THE ANSWER IS 20?HOW DID YOU GET THAT ANSWER?I NEED AN EXPLANATION!
  10. math

    jennifer must complete any 10 of the 25 math problems on a test what percent must she complete
  11. math

    In my math book i got a question 1 1/3 times 1/4 my answer was 5/12. I know the answer is right but how do i do the problem
  12. 4th grade

    explain how you can find the difference 120-70 using mental math. then name the difference
  13. math

    My brother George needs help with a math question. What percent is 23 students of 51 students?
  14. math

    Hi, Im having trouble with this math equation.. if you can, can you please help me and explain. the equation is : 3/7d=5/4 You have to find the solution. Thank you
  15. Math

    When you have a 76% in math and you need to get your grade up to a b and daily assignments are 10% and quizzes are 80%. How will I get my grade up to a b in 5 weeks
  16. Math

    My Math Problem is {4/5n + 9/2} = 49/10 8/10 45/10n = 53/10n 53/10 x 49/10 = 490/530 n= 60 am I correct
  17. English

    1. He has studied math for three hours. 2. He has been studying for three hours. ---------------- Are both grammatical? Which one is commonly used?
  18. Math

    Robert took a math test and got 36 out of 50 correct. What is the percentage of correct answers?
  19. math

    I'm having problems with subtracting 10 digit math problems.Can you give me any websites?
  20. Math

    Hello, Can someone help me with my math problem? Does |k – n| = |k| – |n| for all integers k and n? If so, give 3 examples.If not, give a counterexample.
  21. Math

    Does anyone know the answer to the math riddle "Did you hear about..." the answer is 12 words and it's pg 167.
  22. Maths

    So if I'm using the area 8558.25 in that math I need to have it as 8558.25squared and then sqaure root it?
  23. Math/history

    I have to do a project and need info. about mean, median, mode, range, freqency tables line plots, and stem and leaf plots. I would like historical facts like how, who, where and why these methods came to be. I want to get a good grade so I am willing to
  24. math %

    I hate math,It is hard no matter how I study.What is 30% of $1742.00? If possible I am having problem with a school that keeps the disbersement.I need to learn about how to understand it to know if I been cheated out of money.Online courses in fafas,lender
  25. science

    Research suggests that American students lack a sufficient education in math and science to compete globally. How does the controversy about teaching evolution affect and reflect this problem?
  26. math

    This week’s focus is on systems of equations. Describe a profession that might use this on a regular basis, and give an example with a solution (not covered in the text) of a math problem with a real-life application.
  27. science

    Which of these energies might correspond to the KE of a person riding a bicycle on a road? 10 J; 1 kJ; 100kJ KE is 1/2 mv^2. Take your mass (weight in lbs/2.2), divide by two, take a typical speed say 10mi/hr or 6.6km/hr or 5m/s, square it, and do the
  28. Math 221

    Math 221 - Ms. Sue, Sunday, July 13, 2014 at 2:24pm I've done several problems for you. Now it's your turn. How do you think this problem should be solved? Answer this Question I was thinking that I should multiply the numerators and denominators
  29. Subjects

    Will i get a lot of homework in middle skoo ????? here r my classes Math F.A.C.S. Art Sci English Content Support 7c Gym Social Studies also if i did what to do ???? need tips ???? plzzz answer
  30. Math, Science, Sociology, Economics

    Math: What is the answer to 1146(150+X)+8911(743+19X) Science: What is photosynthesis? Sociology: What is figuration and functionalism? Economics: What is Opportunity cost? Why is it relevant to life?
  31. Gen Chem II

    Thanks for the information Dr. Bob. Would you be able to work it out so that I can actually see the steps with the numbers and follow from there. The question was on Vitamin K from Sunday at 2:44pm which you answered at 3:45pm. Thanks again. I am looking
  32. Math

    A teacher made a pair of foam dice to use in math games. Each cube measured 10inches on a side. How many square inches of fabric were needed to cover the two cubes?
  33. Math

    Assume that math SAT scores are normally distributed with a mean of 500 and a standard deviation of 100. A score of 560 reprecents what percentile? Please round answer to the neareast tenth.
  34. Math

    6th grade math book #2 pg. 438: 17. Suppose the population of the United States is about 230 billion. Is this number closer to 10 to the seventh or 10 to the eighth? Explain your reasoning.
  35. Math

    I have 4 math problems that need to be solved by using factoring. I am unable to figure the following out. I have used the FOIL method but it seems not to be working out. I appreciate any help I can get. Thanks ^ exponet 3x^3-7x^2+2x x^2-2x+5
  36. GRADE 5 MATH

    USE MENTAL MATH TO ADD OR SUBSTRACT: 1. 80+79+20 2. 308+95+5 3. 480+255+20 4.365+289 5. 523-198 6. 537+180 7. 325+239+75 8. 87+38+62 9. 4500-280
  37. English writing

    From earlier I posted a question on how to write a thesis from the topic What is your favorite piece of furniture?Explain. When I sit in my recliner chair it helps me to solve math problems.
  38. Calculus

    A point P in the first quadrant lies on the parabola y=x^2. Express the coordinates of P as functions of the angle of inclination of the line joining p to the origin. I honestly don't think my math teacher explained this at all. Please help. Thank you very
  39. satistics

    Assume that the math SAT scores are normally distributed with a mean of 500 and a standard deviation of 100. If you score 560 on this exam, what percentage of those taking the test scored below you? semperfi
  40. algebra

    I sent a math equation to be solved because i am comfused on what to do with the whole numbers and I got one reply that is not correct. Here it is again. Simplify. Assume no denominator is equal to zero. -10m-1y0r _______________its a fraction set up.
  41. Math

    My math homework question stated : Jaske completed a marathon race in 3 hours and 12 minutes. Write Jakes running time as a decimal. Am I correct. Thanks Answer 3.12
  42. URGENT: Grade 8 Math

    In my math question it says: Multiply. Simplify before multiplying. Use benchmarks to estimate to check the product is resonable. a)3/4 x 8/5 is one of the equations What are benchmarks?
  43. Math

    students can improve their math performance by putting forth additional effect when necessary. True or false I think it's True correct me if I'm wrong
  44. math

    Why do my numbers scramble when I post math homework into my classroom forum posting box when I click on post message?
  45. algebra

    Mrs. Little creates a boxplot for the test scores on her latest math test. She finds that the interquartile range is 20 points. What does this mean?
  46. Algebra

    Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to explain the process. Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply
  47. Algebra

    Solve the inequality and express the solution in terms of intervals whenever possible. | x+3 | < 0.01 I know the answer is : (-3.01,-2.99) Please show me how to solve this type of math problem.
  48. math

    Write a number sentence. Use every digit in the circle only once. Insert math symbols ( + ,-,x,/) and end the number with 3. Us parentheses if necessary. The numbers are 10,7,6,4,5
  49. Math Repost for Al

    math - al, Tuesday, October 16, 2007 at 7:03pm ugh can u answer this for me...................... a car gets 20 mi/gal. how many gallons would a car need to travel 70 ,i?
  50. math

    How do you find square roots? http://mathforum.org/dr.math/faq/faq.sqrt.by.hand.html
  51. Foundations and Pre-Calculus Math 10

    Find the radius of a cone with a height of 3m and a volume of 30m cubed. So far I have 90m cubed / 3m = pi(r^)3m/3m. Then I get stuck. Help! I'm really bad at math. ):
  52. math

    The math problem we need help with is: lbs of can collected by 4 children were as follows: #1 49 #2 72 #3 108 #4 121. the answer is 10. what is the question. where do i start to figure out what the question is their looking for?
  53. math

    Mrs. Little creates a boxplot for the test scores on her latest math test. She finds that the interquartile range is 20 points. What does this mean?
  54. Arithmetic

    32 is 40% of what number? I am brushing up on math that I haven't done in years. Could someone please explain this step-by-step to remind me how to do this kind of problem properly? Thank you!
  55. math

    Multiply fractions and whole numbers 3. Math class starts at 9:50 A.M. and ends at 10:45 A.M. How long is the class??? Please help me on this question I'm stuck on homework!
  56. math

    My math teacher gave me this problem: Prove the validity of cross products by example/words. (Why does it work as a strategy?) What is validity???
  57. Statistics

    A math department is allowed to tenure 4 of 17 eligible instructors. In how many ways can the selection for tenure be made? Please show more than one approach.
  58. statistics-math

    The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed. (a) What percent of students earned a score between 50% and 70%? ( /2)
  59. 12 math

    a library shelf contains 7 books. in how many ways can they be arranged if there are no restrictions? b. the mathamatics text book must be first. c.the 3 math text boooks must be together
  60. Math

    tom is scheduling his classes for next quarter. he wants to take three classes, and has the following options: spanish at 9, 10, or 11; music at 9 or 11; math at 10 or 12. list possible schedules he would choose
  61. Math

    Question: x/15=3 My answer: 45 Am I correct? Did I make a mistake? I've been having problems with math recently, so I wont be surprised if I made a mistake.
  62. Math

    Math question: My plane arrived in Chicago 45 minutes later from Detroit. How fast was my plane which traveled at about 20000 altitude?
  63. math

    How do i show work for this math question. A puppet requires 3/4 yard of material. How many puppets can be made from 9 yards of material?
  64. health

    what education is required for dentist? Do i put answer like math, science what certain certificate do you need for this job? Do i put Bachelor's Degree?
  65. 2nd grade

    Math i have 7 ten rods and 3 units squares. i am playing Win A Flat, i rolled a 9. how many ten rodes do i have after the exchanges?
  66. Math

    Need help! this is out of my math book. max had 192 apples. kyle had 409 apples. If abby adds them together then divides them by 3 what would it be? also adding onto that is 95?
  67. algebra

    Need mathamatical expression. The simple interest rate, given that the principal is 3x, the rate is 6%, and the time is 1 year. im so lost with this math question.
  68. 8th grade

    Math I am a fraction in simplest form. I am greater than1/3 and less than 1/2. The sum of all my digitsb is 8. the difference between my numerator and denominator is 7. What fraction am I?
  69. math

    please help me with my math. Use the distance formula to find the distance between the following points. Show all your work. Round to the hundredths place. (4,5) and (7,3) (2.4,8) and 1,6.3) (29,4.1) and (53.2, 100)
  70. math

    The teacher's pet team has 50 points in math fever. They miss a question worth 200 points. What is the new score?
  71. arithmetic

    On one of the questions of a recent math test, a student divided by 9 instead of multiplying by nine. This computation gave an answer of 18. What's the correct answer?
  72. algebra

    can someone show me how to solve this the instructions are for me to solve by the quadriatic formula is this really 8 grade math im confused im trying to help my daughter tammi and i have never run across this before X^2 + 9=0
  73. Math

    Parametrically represent a Mobius strip. Since I am very unfamiliar with this topic, Math jargon should appear as little as possible and please provide step by step working.
  74. Math

    I need help with my math test systems of equations unit 7 lesson 8 connnextions test if i dont get a c or higher i get expelled PLZ HELP
  75. statistics page on jiskha

    Does anyone find the picture as funny as I do? http://www.jiskha.com/math/statistics/ It's a baby holding a statistics textbook.
  76. 100th day of school work

    If you made a stack of nickels 100 inches tall, how many nickels will you need????????????? ARRRRRRRR! Math is soooo hard! Especially without a calculator!
  77. Math-Algebra 1

    I need help with a pizzaz work sheet ASAP if i don't get this done i am on the verge of failing math and repeating 9th grade. its Pizzaz 11.10 thanks
  78. Algebra

    Can someone help me with these two equations, I need to solve them by completing the square, I know the answers, (Number 1 is -11.56, 1.56, and number 2 is -10.35, 1.35) I just can’t remember how to get those numbers again, I have so much math on my
  79. other

    my math teacher gives us extra credit each week and tis week it was a word... It just said "why?" on the paper she said it should be something we should be able to figure out but she heard the question in college PLEASE help :(
  80. Math repost for edie

    Math - edie, Tuesday, March 11, 2008 at 5:11pm The area of a square is 25 square meters. What is its perimeter? Please show all work
  81. Math

    Twice the smallest of three consecutive odd integers is eleven more than the largest. Find the integers. Please help I don't understand these type of math question
  82. Math History

    I need to know the history of integers for a test tomorrow. I have searched numerous history and math sites, but none tell a specific person. Does any one know who it is or where I can find this information?
  83. Math

    Posted a question on the 2/12/12 at 3:48PM and was never given an answer. Guess the math problem is too hard for anyone to solve. How do they expect me to answer it if no one else can? Thanks for your time. Parker.
  84. Math

    I am in 6th grade and have a math problem that I need help with. How can you use four rods that measure 2cm, 5cm, 7cm and 9cm to measure a length of 1cm?
  85. Math for liberal arts

    This question is dealing with hex, binary numbers. 1. 1012 x 100012 = I am assuming that this question is too. I hate math. 2. 7516 /2716 =
  86. math

    Mrs little create a box plot for the test scores on her latest math test. she finds that the interquartile range is 20 points. what is the Mean?
  87. Math

    Math: Is this statement independent or not. Jordan stayed up late last night watching television. Jordan did poorly in his quiz in the morning.
  88. science fair

    Writeacher, its me again i just wanted to know if the experiment of the math test and music is enough for the multitasking project or should i include another experiment to prove the hypothesis. thank you soo much.
  89. math

    wat is the squre root of 309 http://www.math.com/students/calculators/source/square-root.htm
  90. Math

    I scored a 3456 on my math Scantron, and I tried to look it up and read through the pdf that Scantron provides to explain scores, but it was no help. Can anyone tell me if this is a good, average, or bad score? Thanks!
  91. math

    Here is bob's test score math 65 arts 86 science 84 social studies 78 if his average score is 80 ,how many marks did he make in gramma
  92. Math

    Find 2 solutions to the equation 3x+5y=10. Write the solutions as ordered pairs. This is on my math study guide for our final and she already took up our text books. please help me!
  93. statistics

    draw a distribution curve that represents the following distribution of scores: results of 6th grade math test given to college students
  94. algebra 1

    I'm doing a powerpoint for math, and one of the word problems involve arithmetic sequences. Can someone just type the "a sub n" and "a sub 1" "a sub 7" so that I can copy and paste onto my powerpoint? Or can you sow me how to find it? Thanks!
  95. Math 221

    what is the perimeter of a square using 13ft. Math 221 - Ms. Sue, Sunday, July 13, 2014 at 1:56pm Is 13 ft the length of a side of the square? yes
  96. Math

    Using the Big G answer the following questions: 248 pints = _______ quarts 520 ounces = __________cups The question is what does the "Big G" mean in math
  97. Math

    PQR has vertices p(5, -1), q(0.8), and r(7,5). It is translated right 3 units and up 6 units. Find the coordinates of P', Q', and R'. A) P(8,5), Q(3,14), R(10,11) B) P(2,5), Q(-3,14), R(4,11) C) P(8,-7), Q(3,2), R(10,-1) D) P(2,-7), Q(-3,2), R(4,-1) Please
  98. 5th grade math

    rachel wants to reduce the size of her photo. Which factor listed below would scale down the size of her picture the most? A. 5/8 b. 11/16 c. 3/4 d. 8/5 trying to help my son with his math …have no idea about this.. could someone explain it to me?
  99. Math

    OK, I have had trouble with math, 'C' average, and we are learning proportions. I don't get them! Can someone please do a proportion and then tell the steps to do it? Ex. 4/6= 8/X. Steps: 4/6 equals 8 over x. You do _______ do get ________ over , so X=12.
  100. Math

    Mno~pqr for each of the following angles name the angle that is cronguet.please give me the unit test answers for lesson 13 math 7 unit 8-geometry

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