Math(Please help)

188,446 results, page 69

  1. Geometry (Please check my work)

    Find the image of O (-2,-1) after two reflections, first across the line y=-5, and then across the line x=1. I believe the answer should be (-1,-6) Can someone please confirm?
  2. Algebra

    3. What would be the simplest way to solve the system? y=1/2x 2x + 3y = 28 A. Graphing B. Substitution***** MY ANSWER! C. Elimination D. Distributive 4. What is the solution of the system? y=-3x 2x + 3y = 6 A. (2,6) B. (-1,3) C. (-2,6)*****MY ANSWER! D. (1.5, -4.5) Please help...
  3. Math(Easy Survey Please Help)

    I need 75 of these surveys filled out to do a regression analysis for Economics. Just answer the 10 easy questions for me please. 1. Do you exercise or work out on a regular basis? 2. Are you male or female? 3. Do you smoke? 4. How many carbonated soft drinks do you consume in...
  4. MATH

    About 0.350 of s stretch of forest is being cleared of timber. If the stretch of forest is divided into hundredths, how many hundredths are being cleared? Can you help me solve this question? Please see my previous answer. http://www.jiskha.com/display.cgi?id=1170455048 Please...
  5. math

    Please solve this word problem, It will take at least 360 points for Kiko"s team to win the math contest. The scores are 94,82, and 87, but one of Kiko's teammates lost 2 of those points for an incomplete answer. How many points must Kiko earn for her team to win the contest?
  6. math (algebra)

    Hi. At the sit for mcgraw hills algebra 1 book (website URL is obvious), but don't have a name or password! Could somebody please lend me theres? post it here! Viit Viit! Your teacher needs to register you. http://www.glencoe.com/sec/math/ose/index.html
  7. Math

    I do not understand this problem, and I must write an inequality for it too: Nilsa is working on a 60 minute math test. There are 20 questions on the test. If it takes her 20 minutes to complete 12 of the questions, what is the greatest amount of time on average she can spend ...
  8. Chemistry

    Following question I need help with part b) Please verify my answer for part a) too if possible. Consider the following reaction for silver tarnishing: 3Ag2S(s) + 2Al(s) -> 6Ag(s) + Al2S3(s) a. State the oxidation number for each element in the reaction. 3Ag2S(s) + 2Al(s...
  9. math

    g/5+2>10.......solve Please read: http://www.math.com/school/subject2/lessons/S2U3L4GL.html Now try adding -2 to both sides. then multiply both sides by 5
  10. Physical Science

    Objects accelerated to relativistic speeds....live shorter or grow bigger? Please note that we don't do students' homework for them. Once YOU have attempted to come up with a response to YOUR questions, please re-post and let us know what you think. Then someone here will be ...
  11. english

    i need help writing a "i am" metaphor poem. The format is 10 lines of I am metaphors and the 11th line is what you are like i am annoying or i am blonde or something. PLease help it is due tomorrow! Someone here will be happy to give you feedback on what you write. Please ...
  12. 7th grade

    My textbook question is: Please look at page 38, Figure 2.6: "How do historians know Cartier traveled these particular routes? Where might they have found supporting historical evidence. The picture is just a map with the guys travels. (arrows and lines ect) Please help!
  13. science

    How ionising radiation affect the cell, DNA and can lead to tumours /leukaemia? nothing too complex please note form will be fine, in which I can use it in my explanation. if you can please put it in your own words as I find it much easier to understand and explain in my ...
  14. SCIENCE

    How ionising radiation affect the cell, DNA and can lead to tumours /leukaemia? nothing too complex please note form will be fine, in which I can use it in my explanation. if you can please put it in your own words as I find it much easier to understand and explain in my ...
  15. Language Arts

    which of the following citations in a work cited page uses proper MLA style Please help do today! the examples are Paul, Smith. The Night on the river. New York: Penguin 1987.Print please write it out for me how it should look thanks.
  16. Math(Please, please help)

    Compute the maximum product for two positive numbers x and y with the property that the sum of the first plus five times the second is 5000. 1) Indicate the objective equation 2) Indicate the constraint equation So the objective = f(x)=xy and the constraint = x+5y=5000 Now ...
  17. math urgent help needed!!

    I am so sorry but this homework is due in half an hour. Please help me! A smokestack deposits soot on the ground with a concentration inversely proportional to the square of the distance from the stack. With two smokestacks 20 miles apart, the concentration of the combined ...
  18. Chemistry

    Hi, please can someone tell me if this is the right number of significant figures. 8.1 x 10 to the power of -3 would have 2 sig fig 910 would have 3 175.0 would have 3 please can some tell me if I've got this right Also how would I report each of the following measurements ...
  19. Math

    can someone please help me with the following 2 questions and how to do them. i have a math final tomorrow!! 1. Curtis runs 1 mph slower then Mary. After 2 hours of running in opposite directions, they are 30 miles apart. How fast had Curtis been running? a-9mph b-8mph c-6mph ...
  20. MATH PLEASE HELP

    Bruce bought four packages of cornbread mix that each weighs x pounds. He also bought a package of biscuit mix that weighs pounds more than one package of cornbread mix. If the total weight of the items that Bruce bought is 31 pounds, what is the weight, in pounds, of each ...
  21. Math Algebra

    I am stuck on simplifying four problems, I cannot figure out which steps i need to make. Can you please help me. 6x^4 - 8 2a² + a²b + ab + 1 12m²p + 35nq³ a²b - a² - 2b -2
  22. Math/Sciance

    Can someone please give an example of how i can use this formula in a word problem... Work out (J) Percent efficiency(e)= ____________ x100 Work in (J)
  23. Math/Science

    Can someone please give an example of how i can use this formula in a word problem... Percent efficiency= Work out (J) _____________ x100 Work in (J)
  24. math algerbra 2

    blah this is making no sense, please help me: If you switch the domain and range of any function, will the resulting relation always be a function? Explain your answer with examples.
  25. Math

    Can some one help me solve this please. 2e^5x = 712 log5 80= the five is little next to the log and 2logx=log(6x-90)+1 thanks I would really appriciate it if you could help me out
  26. math

    does withdrawls fall in the catergorie income statement.if not please correct. the other two choices are statement of changes in owner equity or balance sheet.
  27. math

    My teacher said we are supossed to solve this using systems of equations: Let a, b, and c be real numbers such that a-7b+8c=4 and 8a+4b-c=7. Then a^2-b^2+c^2= ? can someone please help?! i don't know what method to use to solve this or where to start
  28. math!

    My teacher said we are supossed to solve this using systems of equations: Let a, b, and c be real numbers such that a-7b+8c=4 and 8a+4b-c=7. Then a^2-b^2+c^2= ? can someone please help?! i don't know what method to use to solve this or where to start
  29. math

    A store owner buys 40 shirts for $600. She then adds 40% to her cost and tags each shirt with the same selling price. What is the amount of profit for each shirt? Please help me!!!
  30. Math

    A motorist travels 108km in 2hrs 15mins. if she travels at a steady speed, find how far she goes in 1 hour. PLEASE SHOW ALL WORKING
  31. math

    An item costs $39.95. Add 7% to the price for tax. Then add $5 for shipping and handling. Write an expression using these numbers that indicates the total cost. Please help me! Thanks!
  32. math

    can someone please help me with this elimination methods problem? 0.05x+0.25y=11 0.15x+0.05y=12 solve using the elimination method and give the ordered pair...
  33. Math / Algebra

    I would like to know if I got my answer right. I am supposed to find the LCM of 11(t-5)and 55(t-5). I thought that the answer was 11t-55 but I am a little bit lost can you please help me. Thanks
  34. math

    *simplify by combining like terms, if possible. then, remove the GCF and factor fully. 2x^2-21x+36+x^2 =3x^2-21x+36 ...i'm not sure what to do after that, could you help and show the steps please
  35. Math 115

    Please check answer. The sale tax rate in a state is 7.5%. If you pay a tax of $17.50 on an item that you purchase, what is its selling price? 17.50*7.5=$131.25 is this correct?
  36. Math; Pre- Algebra

    I neede help with how to solve equations with variabls on both sides. Can you give me some examples and work them out step by step?? Please!! :D
  37. Math 3

    graphing log functions for y=log12^x I don't have a calculator for this and I would like to know how to work this problem on paper so I can graph it to my chart. Can someone please help me with this problem?
  38. 5th math

    Estimate and solve. 214+182= Estimate___________ Solution____________ 1,532-176= estimate:_____ can you please show the work too thanks!! Solutionz:____
  39. Math

    Hello, I have two more rational exponent question that I wanted to verify please: 4x^3y^-2 _________ 2x^-1y^4 = 2x^4y^6 is this correct? 2nd question: [w^1 / w^-3] my answer: = [w^(1)(-4)/ w ^ (-3)(-4)] = w^-4 / w^12 = w^12 / w^4 = w^3 / w Is this right?
  40. MATH HELP

    A line with an undefined slope passes through the points (-2,1) and (p, q). Which of the following points could be (p, q)? A. (1,0) B. (0,1) C. (0,-2) D. (-2,0) Help Me, I do not know how to figure this out????? A person tried helping me with this, but I didn't understand what...
  41. MATH

    A line with an undefined slope passes through the points (-2,1) and (p, q). Which of the following points could be (p, q)? A. (1,0) B. (0,1) C. (0,-2) D. (-2,0) Help Me, I do not know how to figure this out????? A person tried helping me with this, but I didn't understand what...
  42. Math

    A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.
  43. math

    A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.
  44. Math

    A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.
  45. math

    A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help
  46. Math - Graphing Logarithms function

    Graph the function below. Determine the domain, range, and vertical asymptote. Please show all of your work. f(x) = log2(x-4)
  47. 5th grade Math

    Clue1: i am greater than 500 but less than 1,000. Clue2: My square root is a square number. Also please explain your answer. Thank you.
  48. math

    erin is thinking of a 3 digit number.it uses the digits 1,7,and 4.how many numbers can you make that are even?how many can you make that are odd?explain. please answer as soon as possible!!!!!! :)
  49. MATH 7th GRADE

    Would someone please be kind enough to check the answers for these problems?Last round for tonight. Thank you. 1. 3/16 - 1/8 = 1/16 2. 151/4 -11 5/8 = 3 5/8 3. 2 x 3/7 = 6/7 4. 1/2 x 7/8 = 7/16 5. 1 3/8 2 1/2 = 3/7/16 6. 1/2 divided by 2/3 = 3/4 7. 8 1/4 divided 1 3/8 = 333/32
  50. Math, Please Help!!!

    Solve the Trigonometric equation for all solutions between [0,360)degrees. 2Sinx + 1 = 2.6635. Solve for x. does x equal 56.28degrees and 123.72degrees?
  51. Math - Exponentials

    How do I approach the following problem. Please don't give answer but just guidance as to how to approach these in general. I need to be able to solve without a calculator. 3^(2x+1)-16(3^x)+5=0
  52. math

    Marna wants to find the values of x for which the funciton below will have a value of 10. f(x) = x^2 + x - 20. Which of the following shows the correct factorization of this funciton for f(x) = 10. A. (x + 5) (x + 4) = 10 B. (x - 5) (x - 4) = 10 C. (x + 6) (x - 5) = 0 D. (x + ...
  53. Math

    What is better buy? A square 8in. pizza that cost $10 or a round pizza with a 9 inch diameter that also costs $10 Please explain how answer is found.
  54. Math

    I need help on how to solve this type of problem please. 29.)Solve the inequality and express the solution in terms of intervals whenever possible. 1/(x-2) ≥ 3/(x+1) THE ANSWER IS: ( -∞,-1 ) U ( 2,(7/2) ]
  55. Math

    If 6 is increased by 4 times a number, the result is 68. A.Write and equation for this situation. B. Solve for the answer. I got 6+4x=68 for the equation, but I'm not sure whether or not x=15.5, or if that is what the question wants me to find. Help please!
  56. Math

    Please help i really need help!! Celine wants to know the width of the pond. She drew the diagram shown below and labeled it with the measurements she made. How wide is the pond? thnx!! :)
  57. Math Grade 12 Advance Functions

    I need help understanding equivalent trigonometric functions! Can someone PLEASE help me because the test is tommorrow and the internet or my textbook isn't helping at all!
  58. Math- please help

    which expression is equivalent to 3/4x-24. It is a multiple choice questuion a 1/4(3x-48) b 1/4(3x-24) c 3/4(x-32) d 3/4(x+32) I did it by trying each one out I got c 3/4(x-32) mult 3/4 by both 3/4x-24 Is this correct on how to find the answer and is it correct? thanks
  59. math please

    The curtis car traveled an average of 21 miles per gallon of gas. At that rate, how far could the car travel on a full tank of 21gallons
  60. Math

    Use a double or half angle identity to find the exact value of the following expression: if cos x= 4/5 and 270° < x < 360°, find sin 2x Please help! Thanks
  61. Math

    Can you arrange the numerals 1 to 9 (1, 2, 3, 4, 5, 6, 7, 8 and 9) in a single fraction that equals exactly 1/3 (one third)? Could someone explain how you get the answer to the problem, please don't just say the answer!
  62. consumer math

    A trust is an agreement whereby a person or bank manages the estate according to the specific directions of the owner of the estate. True or false i don't know it can you please help
  63. Math Factoring with 3 VARIABLES?!?!

    a^2-b^2+8bc-16c^2 25-m^2-12mn-36n^2 x^2-a^2-y^2-2ay I know that you have to group them 3 and 1 and then you have to do difference of squares but I am utterly lost how to go about it. Please help!
  64. math

    1-sin^2x/cosx = sin^2x/2sinx Please help me figure out this one, can you show all the steps, I am really confused. Your help is very much appreciated. Thanks
  65. math

    A circle of area 25 pi is graphed in the coordinate plane. If its center has coordinates (8,0), which of the following points MUST lie on the circumference of the circle? a. (0,0) b. (0,5) c. (16,0) d. (3,0) e. (0,8) please answer and explain
  66. Math 2

    Amira decides that she wants the 10 molds to have a square base. How many possible molds can she use? Volume is 28 cubic centimeters when it was a rectangular prism. Please answer thanks
  67. Math (6)

    Find the area of the following two curves. y= sqrt(x) y= x-2 Note: People have been telling me that the two lines do not intersect but they do there has to be an answer. please help me. Thanks
  68. math

    The distance between points A and B is 10 units. If a has coordinates (4,-6) and B has coordinates (-2,y), determine the value of y. Please show work and explain. A.-6 B.-2 C.0 D.1 E.2 This is what I got so far: 10= square root of (4-(-2))^2+(-6-(y))^2
  69. Math

    Tell whether the function is linear. Then evaluate the function for the given value of x. 6.) f(x)= 3-3x; f(2) 7.) f(x)= | x+2 | ; f(-4) 8.) f(x)= 2/x-2; f(6) 14.) f(x)=2/3x-5 ; f(9) Can someone help me with these^^. please write the QUESTION # SO I know which one the answer ...
  70. math

    We did this qs in class so we change the equation into the vertex form Here is the solution. Y=3x^2+30x+41 y=3(x^2+10x)+41 Y=(x^2+10x+25-25)+41 Y=3(x+5)^2-34 I understand everything expected I don't know how we get -34, can you explain please?
  71. Math

    A cylinder has volume of 339.3cm^3 and height of 3cm. What is the radius? Please help! Can you show me the formula to use and the steps involved in getting the answer? Thank you for your time.
  72. Math

    For how many values of n where n is a positive integer less than 10 is n+1/2 an integer? A) None B) One C) Three D) Four E) Five Please I would like some help explaining how to get the answer :)
  73. Math

    Convert 2yd, 2ft, 5in. to centimeters. Convert 10yd,1ft, 7in. to meters. I tried it twice but still didn't get it right. Please help me out.
  74. Math.

    A new $20 weighs approximately 0.5 gram. Write a linear function that shows the weight of x $20 bills. - Part b. How much do 120 $20 bills weigh? Please Help!!
  75. Math

    One of two similar triangles has an area of 1/4 times that of the other. What is the ratio of its perimeter of the triangles? (I know the answer but I don't know the solution, please explain. Thank you very much!!)
  76. math please help

    Find the area of triangle ABC if AB = BC = 12 and <ABC = 120 degrees Should approach this with SSS similarity? If yes will the answer be clear or will i need to manipulate it, and how.
  77. Math

    Please help with trying to solve the following; in particular how to get the correct equation set up. The perimeter of a square is 64 cm and the area of the square is 192 cm. What is the length of width of the rectangle? Thank you for your help.
  78. Math

    suppose you had a very small set of numbers that contained only 0 and 1 would this set be closed under addition? if not give a counterexample. please help me
  79. math

    Write the slope-intercept (y = mx + b) form of the equation from the information given. ~~Slope equals 2 and the line goes through the point (-1, 3) Can someone please show me how to do this?
  80. Math

    A can containing 3 tennis balls has a volume of 128/9pi cubic inches. If the height of the cylinder is 8in., what is the diameter of each tennis ball. Please explain how to do this.
  81. Math

    What is the best estimate for the quotient. 5,397 division sign 62 a. 80 b. 90 c. 800 d. 900 My answer to the above is b Can you please double check my answer and let me know if I am right or wrong
  82. Math- HELP!

    Build a table to estimate lim sin(1/x) as x approaches zero. Use multiples of pi. I built a table, but do not understand why this limit does not exist. Please explain! Thank you!!
  83. Math!

    Describe how you would estimate the square root of a number that is not a perfect square without using a calculator. Can someone please explain? I need some help.
  84. Math

    Rectangular Prism: Length: 41 ft Width: 32 ft Height: 49 ft 1. Find the surface area for the given prism. 7,154 ft^2 2,624 ft^2 9,778 ft^2 8,432 ft^2. Help please because I'm not sure.
  85. Math

    Hello! I have a question. What is a table of values for y=x-8? Please tell what free calucators show work! I've been on this question for hours and I'm really frustrated!
  86. Math

    Suppose that the half-life of a substance is 250 yrs. .If there were initially 100 g of substance .How much will remain after 500 years??with solution please
  87. math

    Use the distributive property to write an expression that is equivalent to the example below: 5(2x + 7) I think my answer is... 45.....How I got this answer was 5 x 2 + 5 x 7=45 10 + 35 = 45 Can you please double check my work?
  88. Math

    Find the volume of the solid of revolution obtained by revolving the plane region R bounded by y= x^5, the y-axis, and the line y=3 about the x-axis I've gotten 15/7(3^(2/5))pi, but it's not right. Please help
  89. math

    please help me im really confused i keep changing my answer and i have no clue what the answer is write a rule for the function represented by the table input (x) 0, 1, 2, 3, 4, output (y) 3, 6, 9, 12, 15,
  90. math

    There are 3 boys for every 4 girls in school. If there are 200 girls, how many pupils are there in all? Help me please. This is my homework and I need it right now because we have a class for tomorrow.
  91. Math

    The radius of the larger circle is 9cm. The diameter of the smaller circle is 11cm. Find the area of the shaded region. I don't understand this questions at all please help.
  92. Math

    ht t p: / / imgur. c o m / a/ Fn4gh I really need help with this question, I believe it is C, can someone help please? P.S: put the link in your web browser and remove the spaces to get access to the link, thank you.
  93. Math

    List three different ways to write 5^11 as the product of two powers. Explain why all three of your expressions are equal to 5^11 Need some help Please!!
  94. math

    the debit amount to payroll tax expense represents: A. the employers portion B. the employees portion C. Both D. None of the above. I choose A, but thinking D. Please Help. thanks
  95. math

    help please A line of credit at 15% interest compounded monthly, with a monthly payment of $60 a) How long will it take to pay off the loan? b) What is the total paid back?
  96. Math

    A sum of a number and it's reciprocal is 2 1/30 (mixed fraction) determine the number? I have tried solving it with no luck. I get stuck on the part of completing the square. Please help me Thank you
  97. Math

    The lengths of two sides of a rectangle are consecutive even integers. The perimeter of the rectangle is 196cm. Find the area. -please help, I don’t know where to start or how to approach this problem.
  98. Health please check my answer

    Please check my answer thanks The radiologist is able to evaluate the movement of body organs by doing what procedure A. Ultrasound B. MRI C. Film survey D. Fluroscopic exam I picked A
  99. Algebra......Help Quick!!

    12a^3bc-18a^2bc^2+6a^2c, x^2+20x+36, 12x^4-8x^3-4x^2, x^2+36x, 9x^2+6x+1, 6x^3+11x-10, x^2+3x-6..............can someone please help me solve some of these problems if not all. I have forgotten how to solve them can someone please help..Thanks
  100. Science- Chemistry

    Could someone please explain a few things? First off, how do you change a normal compound or element and change it to an ion? And second, could you please explain the net ionic equations?
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