Math(Please help)

188,810 results, page 20

  1. 7th grade-Algebra Worth Problem

    Please show equation and solve for the following 1. Lyn's age is 8 years less than 15 times the age of her niece Elizabeth. If the sum of their ages is 24, what is Elizabeth's age ( Let e= Elizabeth's age) 2. Bob is renting a canoe for $20, plus $9.75 per day. How mant days ...
  2. math 012 please help explain

    can someone please help explain how to do this problem. i have a previous posting where i tried to work the problem out, and someone tried to explain where i was confused, but im still confused. 4(2n+1)=3(6n+3)+1
  3. math-please check:-)

    three different bags of pretzels are sold at the store which bag of pretzels is the best buy bag a 10 ounces for 1.10 bag b 12 ounces for 1.38 bag c 6 ounces 0.84 My Answer is b please check:-)
  4. Chemistry

    please help! Is RTP in chemistry (thermochemistry and electrochemistry) referring to room temperature of 25degreeC (or 298K) and 1atm, or 20degreeC (293K) and 1atm? In my lecture notes on gas law, they stated RTP refers to 25degreeC, but in my electrochem lecture notes they ...
  5. Math

    Can someone please show me step by step how to solve the following 72.18=3.90625(1+g)/(0.12-g) 8.6616-72.18g=3.90625+3.90625g 4.7554=76.08625g 0.0625=g My question is how did they arrive at 8.6616-72.18g=3.90625+3.90625g step? Please break it down for me.
  6. Calculus please help

    please help I can not understand this. I need an implicit form answer for the general solution of differential equation dy/dx=2(e^x-e^-x)/y^2(e^x+e^-x)^4 with (y>0). I have separated the y^2 to the left hand side to become 1/3y^3 but have no idea how to make the right hand ...
  7. Socials 1 question

    How does birth control affect our world population? Please give me a list of ideas, no sites please I know it helps reduce population growth rate but please tell me more about countries who don't have birth control and what it results in etc.. Thanks :)
  8. chemistry

    Please help me with my formal report on "Potentiometric Determination of the Purity and Dissociation Constant of Potassium Hydrogen Phthalate" Please give me links to websites that could be used for my reference... In addition, please do suggest books that discuss ...
  9. Maths

    Factorise as far as possible: 1) 2a^2b + 8a^2b^2 The answer i got for this is 2ab(a+4ab). I'm not entirely sure if this is fully factorised or not. Can you please correct me if i am wrong. 2) x^2 + 5x - 6 I'm not sure how i can do this. Can someone please explain how without ...
  10. calc (confused)

    A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the y-axis. Please show all steps and ...
  11. Math geometry

    Please help , I only need the second part of the question Betty picks 4 random marbles from a bag containing 3 white , 4 yellow and 5 blue marbles The probability that exactly 1 of the 4 marbles drawn is blue is (0.3535) . The probability that at least 1 of the 4 marbles drawn...
  12. anyone solve it....

    Question 1 Describe the following descriptors. Give their type and the value of all their fields: i.dd 01234567h, 789abcdeh ii.dd 30405060h, 70809010h Please remember these things, especially #s 1 and 2: 1. This is a homework help website; please put your subject (math, ...
  13. Calculus!!!

    I need your help... I've posted this question a while ago but no one has answered it yet. Please please help me. Which of the following series can be used to compute ln(.8)? a) ln(x-1) expanded about x=0 b) lnx about x=0 c) ln x in powers of (x-1) d) ln(x-1) in powers of (x-1...
  14. Math, help needed

    Kate bought 3 CDs and 1 DVD at a store. Her friend Joel bought 2 CDs and 2 DVDs. If Kate spent $20 and Joel spent $22, determine the cost of a CD and DVD. ~Please provide an explanation as well. Please and thanks!
  15. Math (Check 2 answers please)

    1. What is the value of b in the equation b + 8 = 13? A. 5**** B. 8 C. 13 D. 21 2. The steps below show the incomplete solution to find the value of x for the equation 7x − 3x − 4 = −1 + 21: Step 1: 7x − 3x − 4 = −1 + 21 Step 2: 7x − 3x − 4 = 20 Step 3: 4x − ...
  16. STATISTICS HELP PLEASE

    Gender Math M 690 M 550 F 800 F 610 M 540 F 660 M 700 M 560 F 560 M 390 F 530 M 560 F 590 F 520 M 740 F 560 M 620 M 700 M 620 F 500 M 760 F 710 M 590 M 670 M 670 a. Determine whether the sample provides statistical evidence that males have higher Math scores than females at ...
  17. math

    Please help solving this problem. Solve the following word problem: One poll reported that 48% of city residents were against building a new stadium. The polling service stated that the poll was accurate to within 3%. What is the minimum percent of city resident that oppose ...
  18. Math

    Andrew factored the expression 28x^3-42x^2+35x as 7x(4x^2+6x-5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x-5) , she got 28x^3+42x^2-35x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this ...
  19. Math

    two functions are defined as follows: f(x)=3/x+1 and g(x)=x-6 a) Write the equations of the vertical and horizonal asymptotes of f. b) Determine the coordinates of the points where f(x) = g(x) Thank you so much for huge help Is ti correct please? answer for a) vertical asympt...
  20. MATH

    Draw the graph of the equation 4x²-6x+3 using the -2≤x≤3 use a scale of 2cm to 1unit on the x-axis, 1cm to 4units in the y-axis. Find the graphfind; (a) minimum value of y (b) The roots of the equation 4x²-6x-3=0 (c) The value of x when y=5 (d) The solution set of the ...
  21. math

    how do you diverse fractions to decimals and visa versa Just take the top number and divide it by the bottom one. For example, if you have 3/10, take 3 and divide it by 10, giving you .30 and this is 30%. Oh, the the other half, if you have a decimal. .1 =tenths place .11 =...
  22. Math

    Question. I have some math problems that I really need help with and this is all new to me. The direction are as follows: Combine like terms 7x4 -5x4 the number four is square root. I don't understand at all what to do. Please help.
  23. Math

    There was a 6 square foot piece of wrapping paper for a birthday present. It takes 3 3/8 square feet pg the paper to wrap the present. How many pieces of 6 square foot paper are needed to wrap 3 of these presents? Please help me. I tried dividing. Please anyone!
  24. english grammar

    please give me some outlines on this topic - the government has granted a large amount of money to your school to build a hobby room and buy instruments for the school orchestra . why would you like to have the two in your school. please explain a few lines on this topic please.
  25. Math

    Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...
  26. math. PLEASE HELP.

    Question: If A= 29 degrees and a= 4.6, find c. There is a diagram shown in the textbook. b is adjacent, c is the hypotenuse, and a is opposite. I know I'm suppose to use SOH CAH TOA, and i tried using tan, but Im not getting the correct answer. i looked in the back of the ...
  27. Math

    Please Help (I am new in Jiskha) How do you multiply 367 and 72?
  28. Math please check

    Does 0.21 * 0.05 = 0.0105? * means multiply. Yes.
  29. math--fast please

    (r/2) sq. would that simplify to r? do you mean (r/2)^2 which is (r^2)/4
  30. Math

    PLEASE HELP FACTOR: 1. 8x^4 - 14x^2y^2 + 3y^4 2. 10m^2 - 17mn - 6n^2
  31. Math... Please help

    Why is it helpful to graph the solutions of an inequality?
  32. Math

    1/5x-12=22 No answer please just walkthrough process
  33. math someone please help

    write in standard form (1,4) (5,7)
  34. math

    can anyone please explain to me how come x=pi can't not represent a function?
  35. Math, again

    Please explain how to do this problem: 5 + 3 x 2 + (4+2)= I did 5+3=8 x2+ 16 +6=22 did I do this correctly? Thank you...
  36. Math

    evaluate f(3) when f(x)=5x=9 please help me. i don't understand what the f stands for and what im supposto do... thanks!
  37. math....please help....

    what is the coordinates of an acute triangle with vertices at (0,0) and (0,-6)
  38. geometry

    I NEED HELP WITH BASIC MATH GOMETRY.Can you please help
  39. math

    Simplify: (1+i)/(2-i) A)(1/3)+(2/3i) B)(1/5)+(2/5i) C)(1/3)+(i) D)(1/5)+(3/5i) I have no clue please explain
  40. math

    What is the domain of the relation y=Arc sin x? Please help! Thanks!
  41. Math

    integers: -4+102=? Please help to solve this problem.
  42. Math

    Graph the eqution by plotting points y = -1. please help!!
  43. Math

    Please illustrate how to rotate triangle A(2,0), B(7,0),C(7,2) 90 degrees.
  44. math ( show work please )

    117.11 divided by 4.9
  45. math

    simplify this expression and please show work. 2(3x+y)+5(x+2y)
  46. math

    please show me how to work this problem 76 x45
  47. math help please!

    yx3 _____ How do I slimplfy y6x4
  48. math help pleaseee (: ! <345

    sqrt32x + 3sqrt8x help please !
  49. Math

    Can someone help me solve this please A*.3=B A-B=150,000
  50. Math

    what are the next three numbers in this pattern 2,3,4,6,6,9,8? Help please.
  51. math

    ã49 + ã343 - ã2401 = please help me solve
  52. Math 115

    8/26=m/13 104/26 m=4 Check this problem please
  53. math

    Create a quadratic equation from the solutions of x=3 and x=-3. please help
  54. Math

    Let f(x) = (lne^2x)/(x-1) for x>1. If g(x) is the inverse of f(x0, then g'(3) = ? A. 2 B. 1 C. o D. -1 or E. -2 if you can show/explain how to get that please, thanks
  55. math

    what is the answer to this fraction, please show your workings. 4/5 + 7/10
  56. math

    Please help! cot (2ɵ/3)= - square root of 3
  57. math 116

    Solve for g A=gq This makes no sense to me please help! Thanks!!
  58. Math

    What is the area of a circle with a diameter of 12 ft by pi? Please help me with the formula~thanks!
  59. Math:Evaluate Expressions

    e/3-2x3 for e=41.4 Please explain. Thank you!
  60. Math!!

    Hi!! What is base-3 and how do you find it? How do you use the digits {0,1,2}? Please Help!! THank You!!
  61. Math

    Today's HW, due tomorrow, I'm lost, please help. 1. 5y - 7x = 10 2. 2y = 10 - 2 (x - 3) 3. y = 2x + 1/2 (3x + 1) + 1/4 (2x + 8)
  62. Math

    Can somone please help me with this question. Thank-you! Solve for x if 125^3x-1=25^x+4
  63. math

    -3x-2(5x-7)=-12 I need to solve for x, please help!! and show me how you did it if possible!
  64. Math

    How do you know when a graph is a function or not? Could I please have and example
  65. math

    3/4 + 1/10 I know the answer is 17/20, but I'm not sure how do get to this, please explain how to solve.
  66. math help please

    solve the system by the elimination method: 5x+3y=-13 & 7x-2y=11
  67. math

    -2x^2<30 1/abs value(11-9x)=6 Please show me how to do these two!!
  68. MATH

    I Am Doing Equations. y=2.5x-15=220 Please Help Me Solve This Question. :}
  69. math

    Write in the form y=a(x-p)^2+q please show the steps.. a)y=-2x^2+6x+11 b)y=-x^2-3x-3 c)y=1.5x^2-9x+10
  70. math

    can someone please check my answer? -9<==4x-8<==-7 {x l -1/4 <== x <== 1/4} is this correct??
  71. math

    please can you show me how the get the prime factorization of 392. thank you
  72. math please help

    Write the ratio of 4 1/3 to 6 in simplest form.
  73. math addinq and subtraction fractions

    i need help please
  74. Basic math

    can you please explain division Ex. 16539/7
  75. Math

    -6(1+2x)=78 Please work the problem out, so I can see how it is done. Thank you!
  76. 6th grade Math

    31/6 times 8/3 Please help me thanks a bunch.
  77. 6th grade Math

    2/13 divided by 5/26 Please help me Thanks a Bunch.
  78. math i need help please

    evaluate the expression 7d-5cif d=7 and c=3 a)50 b)40 c)20 d)34
  79. math please

    Solve 3^2x + 3^x - 21 check extraneous roots
  80. 6th Grade Math

    8w-11=45 Please work this out for me Thanks.
  81. Algebra

    can you please help me with a math problem? -3xy^2 + 3x2y -2y^3 = xy + 2
  82. Math

    (8.3*10^2)*(9.1*10^-7) Please help me solve this result in scientific notation.
  83. Math 9

    5 x 10^n = 5 Can someone please tell me the steps to solve for n? thank you!
  84. Math Help please

    Can a scalene right triangle tessellate?
  85. Math

    looking for help with find the slope and the y intercept for y = 5 please help
  86. math

    how would you factor 5x^2+x-3x-3 because I got x(5x-1) -3(x-1) which doesn't work. Please help.
  87. 6th grade math

    Ok i need 59% of 100 25% of 30 and 75% of 88 PLEASE!
  88. math

    0.3x-0.2y=4 0.5x+0.3y=-7/17 Can anyone Please help me solve using the elimination system.....
  89. Math

    Can you please help me explain why a perfect square cannot be a prime #? Thanks!
  90. math

    0.25 plus 0.65 in fraction form answer please
  91. math

    y=5x+5 2y+10x=-78 Please help i don't know how to solve this System of Equations Thanks
  92. math

    1/3(9 + g) = g+1 can you please show me the steps and answer for this question?
  93. 12th grade

    can you please help me to do my math homework on geometry 7.5
  94. math-please help due tonight

    If P (A) = 2/3, P (B) = 1/6, and P (A and B) = 0 what can you say about P (A or B)?
  95. math

    What is 752*35 please i need the answer now
  96. Math

    5d^3-80d=0 Please help me solve this equation by factoring.
  97. answer please!!!!! Math

    I'm having trouble with these 2 problems. (-7+p)(8+p) & (p-7)(p+8)
  98. Math

    $20768 the percentage for this is 21% please help me through the formula on how this is done get 21%
  99. Math

    x^8y^-5 over z^-4 Can you please show me how you got the answer. Thanks
  100. Math

    can you help me please factor the polynomial completely: 5x^2-22x+21
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