Math grd12

4,586 results, page 26
  1. Math

    Okay. I have questions like "Walks ten meters in 3 seconds" . How do I find her walking rate. After that I have to find an equation to represent the distance she walks in t seconds. Please help me...Im very confused and terribe at math
  2. Math

    Hello. I am learning something new this year in math and truly need some help please. Ordering Real Numbers. Compare. Write , or = Square root of 8 + 3 8 + square root of 3 I have to compare these and don't know where to begin or how to start this. Please
  3. math

    How do I write this problem? to receive a grade B- in a math course, you must have a mean of 83 on five tests (4 tests + one final) all 100 pts maximum each. Your scores thus far are 85,79,82,and 81. How many points must you have on the final, to earn the
  4. Maths

    Alright, so I'm doing questions on exponent laws for my grade 11 math couse, and I came across one and I've no idea how to answer it. Could someone please explain step by step? According to textbook, answer should be 16: (2^3) / [(2^0)-(2^-1)] That "-1" is
  5. Chemistry

    A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution? Choose one answer. a. 56.1 b. 43.9 c. 37.0 d. 58.8 When we calculated yesterday the answer was not B. 43.9....I got it wrong and don't know why if the math was
  6. CALCULUS - need help!

    this was on the math test that i got wrong... The position equation for the movement of a particle is given by s=(t^2-1)^3 when s is measured in feet and t is measured in seconds. Find the acceleration at two seconds... i found the first derivative but i
  7. Math

    A 3-pound pork loin can be cut into 10 pork chops of equal weight. How many ounces is each pork chop. Is my math correct? 3lb=48oz so 48/10=4.8 so is each pork chop, 4.8 os or do i have to divide 8 by 10?
  8. math

    Sarah was trying to figure out her grades for her math course. She only knew the grade of 4 tests she had taken, however the class had taken 5 tests total. She scored a 94, 67, 83 and 93. If Sarah ended up with a grade of 90, what did she get on the 5th
  9. algebra

    The test scores from Mrs. Gray's Math class are shown below. 72, 73, 66, 71, 82, 85, 95, 85, 86, 89, 91, 92 Construct a box-and-whisker plot to display these data. --65--70--75--80--85--90--95--100-- ^what the graph looks like^ How would you solve this
  10. math

    I was just wondering, if a series of numbers has 8 digits and the 1st digit is always 3, how many possible combinations of this number could there be. I am certain I once learned this in a math class years ago, but cannot remember how to calculate it. Help
  11. math

    I am sorry but I am not good at math, this may seem like a dumb question but I don't do well with word problems? I can't figure it out, maybe I am making it too hard on myself, can someone point me to the right direction? . The distance from Philadelphia
  12. Stanger Secondary ex-school

    What subjects do u really need to do for art such as Drawing and Poetry...#"compulsory subjects" for these arts. Is it: Physics,pure math,geog,life sciences,mech tech,EGD,mah.lit,BS,history,economics,...which ones are needed??? Ain't u shuld be smart in
  13. math

    I am sorry but I am not good at math, this may seem like a dumb question but I don't do well with word problems? I can't figure it out, maybe I am making it too hard on myself, can someone point me to the right direction? . The distance from Philadelphia
  14. math

    mr. pursley, have you ever worked geo., trig. etcwith no calu.s with the heat on , when it had to be right?wheather you blew up your target or something else or the bld. collapsed or was built in the correct place? i'm not an answer grazer, but qam an
  15. Stats

    Fill in the table below regarding populations and samples. The first column represents the question the statistician is trying to answer. Fill in the blank(s) for each row. 1.Is my well water safe? 2.Are as many girls born as boys in the world? 3.Which
  16. math test

    ok this past week i was sick 4 2 days and i need 2 finish this math test by today!!!! and i didn't get 2 learn anything like u know, not practive soo plz anwser these questions: 1.what is a concave polygon 2.what are concentric cicles? 3. what does this
  17. Math

    Matt Miller, age 28, takes out $50,000 of straight-life insurance. His annual premium is $418.20. Using the tables in the Business Math Handbook that accompanies the course textbook, determine the cash value of his policy at the end of 20 years. A. $13,250
  18. Math

    posted my last question wrong. 1) The slope of a line is 3/4, the line passes through the point(4,7). Where does the line intersect the y-axis? 2) If x/y=z, and x*y*a=0, which of the following variables have to=0? Assume each of the variables is = to a
  19. Physics

    1 kg block of ice at 0 degrees celsius placed in cooler. How much heat will the ice remove as it melts to water at 0 degree celsius. I know the answer is 80kcal but don't know the math that backs up the answer-please help!
  20. Math

    Good evening everyone. I have another math problem I truly need help with. Complete the table Length of side 1 2 3 4 5 Perimeter of side Area of square I am not sure where I would even start by completing the rest of the table. How would I start doing this
  21. Math

    Jill's front door is 42" wide and 84" tall. She purchased a circular table that is 96 inches in diameter. Will the table fit through the front door? I know the answer is yes but how I don't understand the math???
  22. Algebra

    Need help to an math problem. James have 15 cases, with 15 boxes per case, and 15 brands per box. Write an exponential expression using a base of 15 to show how many total brands there are in a stack of cases. How would I write that?
  23. math

    Of the 1st graders who were asked, 1/6 like math best, 2/3 like reading best, and 12 like science best. How many first graders were asked their favorite subject? THINK: Into how many equal parts should the picture be divided? Draw a picture to solve the
  24. science

    there is a cup with 75ml of orange juice. A marble was dropped into the cup and the level of the juice rose to 90 ml. Why did this happen? Find the volume of the marble. Use math and show/label all work.
  25. To "WOK..."

    Please put your School Subject in the School Subject box (Examples: math, science, algebra, geography). When all you put is one letter, most tutors are not inclined to open your post since you are not following instructions.
  26. Math

    isoceles triangle with vertex of 45 degrees, base angles are 67.5 degrees. The 2 legs are 10' in length. What is the length of the base? (I am an older adult with minimal math skill. Just have a building project.)
  27. Math

    Good evening. I have a math problem that I just need a bit of help on please. A trap for insects is in the shape of a triangular prism. The area of the base is 3.5in and the height of the prism is 5 in. What is the volume of this trap? Do I just need to do
  28. algebra 2

    Graph the system of constraints and find the value of x and y that maximize the objective function. Constraints {x >= 0 y >= 0 y
  29. math

    There are 28 students in Ms. Rainbow's Math class. The number of girls is 10 less than the number of boys. If there are b boys in the class, write an equation to correctly model the situation.
  30. college trig

    I need to find the domain of the following function: y=arcsin((x-3)/(2x+1)) My math is a bit rusty after holidays...This is what I did: (I'll use for the sign of 'not equal') -> 2x+10 2x-1 x -1/2 But i'm not sure about the rest! What I though of doing was
  31. Unkown Filed of Math

    yah well this is a filed of math i'm not sure what it's called alright well her we go how do I graph on a flat piece of paper in four dimensions. I can do it on the computer simply but I'm not sure how to do it on a flat piece of paper
  32. 3 rd math

    no i'm not try to cheat. i just want to understand how do you round the #132 to the nearest million . if 2 in million place should i round up or keep it same value. i just want to able to understand . on my kids math practic only . it's not an actual
  33. Data management

    The camera club has 5 members, and the math club has 8 members. There is only one member common to both clubs. In how many ways could a committee of 4 people be formed with at least 1 member from each group?
  34. Math

    The math question is "in a piggy bank there is a total of $15.75. If the ratio of dimes to quarters is 5:7, find the total amount in quarters. My question is, what formula would I use to solve this?
  35. Geog

    if each time zone is 15 degrees in width who many time zones are there around the earth? Simple math problem. There are 360 degrees around the world. Divide 360 by 15.
  36. math

    1.Elizabeth planned to make 6 pans of apple crisp for the day, using extra tart granny smith apples-just like her grandmother had. But after peeling, coring, and slicing she had a major problem: she only had 10 cups of apple slices. it was getting late and
  37. Math is this correct

    There are 30 students in math class. Twelve belong to the photography club. Three belong to both clubs. How many belong to neither club? Is it 12?
  38. Math

    A math class has 25 students. There are 13 students who are only in the band, 4 students who are only on the swimming team, and 5 students who are in both groups. How many students are not in either group? I think it's 3 students?
  39. osizweni

    Math,busi age is three time the age if vusi.in six years time their combine age is 18 .what are their ages now
  40. Math

    This math problem is somewhat tricky. It says to write a pair of decimal division expressions, so that when you estimate and compare the quotients, you get 9>3. The below is what I thought of: 18.2/2 and 30.3 divided by 10 18.2 is rounded to 18 so then
  41. Math

    Sarah was trying to figure out her grades for her math course. she only knew the grade of 4 of the tests she had taken, However the class had taken 5 tests total. She scored a 94, 67, 83, and 93. If Sarah ended up with a grade of 90, what did she get on
  42. Math Poster Project

    I have do complete a poster for math but I have some confusing instructions at first. Please help me understand and provide an example using the directions below that were given to me: Choose four rational numbers. At least two of your numbers should be
  43. Math

    An industrial dishwasher takes 4.8 litres of water to wash a full load of dishes. If you were to wash full loads, how much water would you use? I am very confused on how to begin figuring this math problem out. Can you assist?
  44. Math

    Dear Readers, I am a 6th grader that recently took a math test. I got a question wrong, and I think it was because I don't know the definition to the question. Can you please tell me what an interval in mathematical terms is. Please give me something a 6th
  45. 8th grade math

    I am in 8th grade math as a sixth grader. I am stuck on one problem. It is this: You are making a necklace that is 9 inches long. You use 6 beads for each inch. what integer is the change in your supply of beads after making the necklace?
  46. Statistics!!!

    b. The correlation between the number correct on a math test and the time it takes to complete the test is -.45. Test whether this correlation is significant for 80 children at the .05 level of significance. Choose either a one-or two-tailed test and
  47. math

    I'm not good at math! I need help with finding a decimal from a fraction. like 1/3, 13/15, 19/32 I can't figure out how to turn it into a decimal! Just divide the numerator by the denominator. Use long division or a pocket calculator. can u help mme
  48. MATH

    2tan^2x-tanx-1=0 0
  49. Math

    This math problem is somewhat tricky. It says to write a pair of decimal division expressions, so that when you estimate and compare the quotients, you get 9>3. The below is what I thought of: 18.2/2 and 30.3 divided by 10 18.2 is rounded to 18 so then
  50. Math

    There is a graph and on the right hand side it has numbers going up from 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70 these numbers represent Time (days) on the bottom it has 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 which represents Time (weeks) The math question is
  51. chemistry

    Calculate the percent ionization of a 0.15 formic acid solution in a solution containing 0.11 potassium formate. I have the formic acid Ka=1.8 *10^-4 When I solve for "x" I'm getting 1.1.44*10^-2 When I plug that into equation (x/0.15-x)*100, I'm getting
  52. arithmetic

    I do not understand my math problem. The problem is below. A recipe for a loaf of bread calls for 3/4 cup of oatmeal. How much oatmeal do you need if you make half the recipe?
  53. 4th Grade Math: Help Is Needed ASAP

    My son is in the fourth grade and is needing help with these math problems. Can someone please help him with these problems. 1. 2/3+2/9= 2. 3/5+3/10= 3. 5/12+1/3= 4. Find the sum of 1/6 and 1/12 5. Add 1/4 to the answer in Exercise 4. 6. What is the sum of
  54. mat115

    Need help with this math question. Thanks for your help. Work must be shown and reduced to the lowest terms. 7/11-3/11 The directions to this question is subtract. Write the answer in lowest terms. Thanks so much for help.
  55. Reading/ELA

    Hello! I have a hard time finding out what these words mean? Can you send me any websites? That would help so much! Also, can you send any educational websites for me. I only got an "A" on math and the rest of the subjects are B's. I want to pass all of
  56. Math

    On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?
  57. Math

    Hello. I'm not a native English speaker. I have a math assignment and I need to explain the process of this equation. y=14.2x+19.3 542 = 14.2x+19.3 542-19.3 = 14.2x 522.7 = 14.2x x = 36.8… I don't know how to explain this in English, can anyone please
  58. Math

    On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?
  59. math

    In my math book I got a problem that said explain the meaning of the range I said that you need to add the greatest number and the lowest number if that is not correct what is the meaning of the range.
  60. math/ chemistry

    so I have this chemistry problem which involves math and basically I need to convert 62 g/mol into mol/L but I don't know how. like do you DIVIDE the g/mol by 1000 to convert g to L? and then how to you get the mol to become the numerator?
  61. Grade 12 Data Management math

    I'm doing math through correspondence so material is not explained very well. I would appreciate if someone could explain this to me. This lesson is review of set theory and first degree equations. Indicate whether each of the following statements is true
  62. Math

    I'm doing math through correspondence so material is not explained very well. I would appreciate if someone could explain this to me. This lesson is review of set theory and first degree equations. Indicate whether each of the following statements is true
  63. Integrated science

    An insect inside a bus flies from the back toward the front of the bus at 3m/h. The bus is moving in a stright line at 40m/h. What is the speed of the insect? Show you work. I was woundering if someone could help me find the math for this problem? But I
  64. calculus help please

    dy/dx = 2y^2 Integrating...y=2/3 y^3 + C put 1,-1 into the equation, and solve for C. Then find the y for x=2 if y= a^uhttp://math2.org/math/integrals/tableof.htm see exponential functions. dy/dx=2y^2 and if y=-1 when x=1, then when x=2, y=? how do i get x
  65. Social emergency

    The agricultural revolution made us stop chasing our food because we started farming and it gave us free time. Now our free time helped us think of what we will do tomorrow. So which came after and so on. your choices: math,science, and literature trade
  66. To Reiny

    I just watched the video you posted the other day. Wow!!! That's scary! It's far worse than Tom Lehrer's 1960s "New Math." http://www.youtube.com/watch?v=SXx2VVSWDMo&feature=related http://members.aol.com/quentncree/lehrer/newmath.htm
  67. algebra

    can anyone please help me set this problem up, I can do the math but I have tried for hours... Air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by $2 for every member. Due to space
  68. Social

    The agricultural revolution made us stop chasing our food because we started farming and it gave us free time. Now our free time helped us think of what we will do tomorrow. So which came after and so on. your choices: math,science, and literature trade
  69. Calc

    The sun is shining and a spherical snowball of volume 210 ft3 is melting at a rate of 14 cubic feet per hour. As it melts, it remains spherical. At what rate is the radius changing after 3 hours? I posted this question before and when i went back and did
  70. AP Physics 1

    This isnt exactly a hw question... but for anyone who knows: Im considering to take AP Physics next year as a challenge. I'm going to be taking pre-calc next year ( i already took my algebras) and im not too great in math but im good at memorizing and
  71. statistics

    A math professor notices that scores from a recent exam are normally distributed with a mean of 64 and a standard deviation of 5. Answer the following questions using integer values. What score do 75% of the students exam scores fall below? And, how was
  72. Math

    Two figures are similar with a similarity ratio of 4 and one side of the figure is 3 cm long. Find the lenght of the side of the similar figure. I don't really know if I have to try to do it like an equation or if there's a formula for this. Sorry if
  73. math

    you have 3 hours to do your homework. you spend 45 min on math. you want to divide the time remaining equally along 4 subjects. write and solve the inequality to find the # of minutes you can spend on each subject. I know the answer is 33.75 but can you
  74. Algebra

    This is not math related, but I will be gracious for your help. Solve the following alphabet puzzles. Examples: 26= L. in the A. Answer: 26=letters in the alphabet 54= C. in a D (with J). Answer: 54= cards in a deck( with the jokers$ 140=M N of C in a T
  75. math

    I have a question on my math that my teacher cant help me with because this one is for try it. Can you help me see if it is right?: It says: 12 . Wich is equal to 30 hundreths? A)3 thousandths B)3tenths C)3 tens D)3thousands I think the answer is B but, it
  76. Math

    Lesson 8: Solving Inequalities Unit Test CE 2015 Algebra 1 Unit 4: Solving Inequalities i need answers im 9 lessons behind in math and my mom just had surgery and the house is a mess if anyone understands please help!!!! ): i just dont have time
  77. Algebra

    I used an online math site, to explain quadratic equations. But the thing is, they said that (-4)^2 is 16, but my calculator said -16. Why is that? And also, how does the square root of 40 break down into the square root of 4 and the square root of ten?
  78. math

    I need someone to help explain how this math problem works. I am not sure how to convert this fraction below to arrive at 100.8 degress. 7/25 .360 degrees=100.8 degrees How did this answer of 100.8 degrees come about in this equation?
  79. Trig

    I was doing this problem sin^-1 (4/5) if I'm not mistaking most teachers would say that .927295218 radians is wrong is just an estimation and therefore is wrong so I'm justified in putting this on my paper instead right ( ln( (4i +3)/5)/i ) right? She
  80. ELA

    Which sentence uses an infinitive as an adverb? A) My favorite board game to play is stored in the basement. B) Nicole wants to learn the art of rhetoric before next year. C) Dave's favorite thing to do is to walk his dog every evening. D) We met after
  81. math

    not sure if this had to do with math but my professor gave us this last hw assignment that i don't understand at all. It has to do with the grade scaling he does. 4x Exams = 37450 HW = 9362 Final = 16385 Lab = 23407 Recitation = 7022 Total Points = 93626
  82. Estimating sums and differnces of fractions

    Hello! My 10 year old daughter is having trouble understanding these preparation questions from her math teacher. I know the answer but I don't know how to explain it to her.. I'm sorry if that doesn't make any sense. When I was in 5th grade they taught us
  83. MATH

    Suppose 10,000 is invested at 6 percent.how much additional money must be invested at 8 percent to produce a yield on the entire amount invested of 7.2 percent. ( Please show each and every steps of this math with the rough works) THANK YOU SO MUCH.
  84. math

    John's account of 98.50 has been delinquent for 3 months. After 90 days office charges a 2% service charge, compounded monthly that is added to future bills. What would be the amount owed after 9 months? My math is 98.50 x 0.02 = 1.97 1.97 x 12 months =
  85. English

    A: Seho, what are you doing? B: Hi, Inho. I'm doing my math homework. A: Hurry up! We have to play soccer in the playground. B: We have a soccer match on Thursday. Today is Wednesday. A: No, it's Thursday today. Come here quickly. B: Sorry. I'll be there.
  86. english

    Im deciding my courses for fall semester please advice if basic math and anatomy&psysiology with religion is too much of workload, my other choice would be a&p,basic english and religion.What do you think. note.. I know whatever is chosen is hard work,i
  87. Algebra

    I have just one math problem that I need a little help with. Please give me the answer, and walk me through it, too, to help me understand it. Thanks! The price of a ring is decreased by 40% and the resulting price is increased by 50%. The final price is
  88. How conceps develops

    As a math teacher, Mrs. Wright has high expectations for all of her students. However, she also provides a lot of support for all of her students. Mrs. Wright is employing which of the following Principles of School Mathematics? A. Technology B. Learning
  89. Math

    I have a question for math that I attempted to, I would like to make sure it was right by asking you guys. Here it is 45) Jerry was making lemonade from frozen concentrate. The directions say to empty one can of the concentrate into a one gallon container
  90. Math

    Please explain how to figure out the following 7th grade math problem: If a rubber ball bounces exactly 1/2 the height from which it is dropped; and it is dropped from the top of a building that is 64 meters tall, how high will the ball bounce on its
  91. Math

    I need some help please. I don't understand the math that we are doing. Please explains to me in detail how to do radical expressions and like how to simplify them and stuff. I don't get it and it would be much appreciated. here is one of the problems.
  92. Statistics

    One of my classmates ask this question and it wasn't answered so now I am asking it and of course we are all struggling with no strong Math background Case 6.4 Maternal Serum Screening Test for Down syndrome Please keep in mind that I do not have a Math
  93. math

    4 numbers are placed in a bag. two are removed and total 2.4. The numbers are returned to the bag and the process is repeated 4 more times. The totals are 2.4 2.5 2.6 2.7 and 2.8. What are the 4 numbers in the bag? please let me know how you arrived at the
  94. geometry

    I need help with my math.. Can someone please help.. In the coordinate plane point X lies on line segment MN. The coordinates for MN are (-1,3) and (7,10). If the ratio of the length of MX to the length of XN is 2:5, what is the y-coordinate of point X?
  95. math

    In a math contest of 20 problems, 5 points were given for each correct answer. If Janelle answered all 20 problems and scored 72 points how many correct answers did he have?
  96. chemistry

    how many moles of hydroxide ions are there in 82.35 mL of a 2.164M Sr(OH)2 solution? i understand how to do the math for problems like these, but i don't know how to find the moles of just hydroxide ions.
  97. math

    if there are 19 boys and 24 girls in the math class. 10 boys and 15 girls are freshman. if you randomly choose a student, what is the probability that it will be a girl or freshman?
  98. Maths

    3x + 1 < -2 subtract one from each side, then divide both sides by three. first you need to look at each side of what ever your looking at and subtract 1 from each number then divide the numbers by 3 I have trouble with math all the time. so I was
  99. 3rd math

    okay Math genius! Help me out here. I am a number greater than 99 and less than 1,000. Two of my digits that aren't next to each other are the same. My tens digit could not be greater and it is 1 more than my hundreds digit. What number am I?
  100. Math

    I need to figure out how to make graphs on a computer for a math project. Any help? I need to make histograms, back to back boxplots, and back to back stemplots.

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