Math(Please help)

188,810 results, page 95

  1. math

    benny's older brother,Charles studies 16.5 hrs. each week. This is 180% more than the amount of time Benny spends studying. How many hrs. does Benny study eachweekto the nearest tenth of an hr? please help!
  2. math array

    my grandaughter is doing array dot to dot sample make as manydifferent arrays as possible number 5 how would i go about doing a array with dots please, desperate in need to keep up with my grandaughters homework.
  3. math

    David put 155 feet of plastic edging around the outside edge of the concrete surrounding his pool. The concrete in 17.5 feet wide, how long is the concrete. help me solve please, very confused.
  4. math

    a teaher chooses a student at random from a class of 10 boys and 15 girls. Find the odds favor of and for the odds against each event. 1. choosing a girl 2. choosing a boy i don't understand odds of something please help.........
  5. 4th grade Math Help

    Samuel has 1,482 baseball cards in his collecion. Maria gave Samuel 126 cards. How many cards does he have now? Explain what computation method you used and why. Please Help! Thanks Kevin
  6. 7th grade math

    Hi! What is the formula of the volume and surface area of cylinders? I checked my textbook and it didn't really say. My teacher didn't really explain at all. If somebody could help explain this it would be really great. Please help! Thank you!
  7. Math - Trig

    For the equation 4 cos theta - square root 12 = 0, where 0 < theta < (or equal to) 2 pi, determine the measure of theta. The answers to choose from are: A) pi/ 3, 5 pi/ 3 B) 2 pi/ 3, 4 pi/ 3 C) 5 pi/ 6, 7 pi/ 6 D) pi/ 6, 11 pi/ 6 Please explain and show work, because I ...
  8. math

    Please show me how to set it up and solve: You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?
  9. Math

    Please show me how to set it up and solve: You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?
  10. Math

    you have a loan for $150,000 @ 5% on a 30 yr mortgage. You plan to pay off your loan in 10 yrs, Do you want your loan to be figured using the "Rule of 78" or the "Unpaid Principal Balance Rule" please help if possible Thanks in advanced
  11. Math

    Don't understand the problem can somebody please help me The bottom of the rabbit cage is a rectangle with a perimeter of 118 inches. Let x be the cages width(in inches) and let y be its length (in inches). write an equation for the perimeter the find the intercepts
  12. math

    If a company issues bonds with a face value of $1000, a coupon rate of 7%, and that will mature in 10 years. The current market yield is 10%. if the bonds pay interest semiannually, what is the value of the bonds? please he;p with the formula?
  13. math

    100=1.5(1.1^n - 1)/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5(1.1^n - 1)/1.1-1 10 = 1.5(1.1^n - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 Thank you so...
  14. math

    100=1.5((1.1^(n) - 1))/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5((1.1^(n) - 1))/1.1-1 10 = 1.5(1.1^(n) - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 ...
  15. Math(Algebra)

    Estimate the size of the bear population 50 bears, 1 year later 100 bears, 2 with taggs what is the estimated size of the bears can you Please wirite me the stepes so I cam understand what you did. Thank You so much foer your help.
  16. math show work please

    a bacteria colony doubles in 7hrs. How long does it tae the colony to triple Use N=No2^t/T. where No is the intial number of bacteria and T is the time in hours it take the colony to double.
  17. math

    Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark) Here's my work on it: kx^2-5x+2=-3x+4 kx^2-2x-2=0 a)b^2-4ac (-2^2-4(1)(-2) (-4--8) (4) Can ...
  18. math

    Two circles have a radii of 15 and 95. If the two external tangents to the circles intersect at 60 degrees, how far apart are the centers of the circles? Can someone please explain this to me, show the work and give me the answer. Thanks!
  19. math

    Two circles have a radii of 15 and 95. If the two external tangents to the circles intersect at 60 degrees, how far apart are the centers of the circles? Can someone please explain this to me, show the work and give me the answer. Thanks!
  20. Math

    at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help?
  21. math

    at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help?
  22. Math PLEASE HELP

    1. A baker had 10 sacks containing the following amounts of flour: 4 ½ kg, 3 ¼ kg, 2 ½ kg, 2 ½ kg, 4kg, 3 ¼ kg, 4 ¼ kg, 5kg, 2 ½ kg, 3 ¼ kg 2. If the baker redistributed the flour equally among the ten bags, how much flour would be in each bag?
  23. math

    Solve the system:4x+2y-13=0 and 3x=5y+26 by elimination. 3 (4x+2y-13=0) 12x+6y-26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y-26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to do next. Please help??
  24. Math

    Hey, I just need my answer checked. Simplify: y to the 4th power times y to the 3rd power y to the 1st power y to the 7th power ** y to the 12th power y to the 43rd power correct? If not, please show work for me. thanks.
  25. Math

    what is the answer to the multplacation question ........... the question is what is the answer to 1,859 * 30 = Please do the multiplication -- either manually or with a calculator. Or put 1,859 * 30 in the Google search window.
  26. math

    The width of a basketball court is 1 m more than half the length. If The area of the court is 364m^2, find the length and width. how would you solve this problem? please help me.. =)
  27. math again

    please help me and thank you. the product of two whole numbers is 48 and their sum is less than or equal to 20.what are all the possiblities for the two whole number? again thank you for helping me :]
  28. Math - exponential function

    Find all real numbers that satisfy (6^x)(7^(2x)) = 86, 436. Here's what I did: ln(6^x)(7^(2x)) = ln86,436 ln(6^x) + ln(7^2x) = ln86,436 x = [ln(86,436)] / [(ln(6) + (2)ln(7)] x = 2 Please correct my answer! Thanks.
  29. Math

    I am stumped on this problem could someone please help? Give the solutions to the following quadratic equation by examining the graph of the related quadratic function: Graph: y=x^2+2x-15 Equation: x^2+2x-15=0 Thanks.
  30. math

    Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..
  31. math

    Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..
  32. Math

    Find csc(arctanx). Okay, I know arctangent is implied that it's x/1. I drew the triangle, and I believe the hypotenuse, c, is sqrt(x^2 + 1). I get sqrt(x^2+1)/x for csc(arctanx). Is this correct? If not, please explain. Thank you!
  33. 3rd math

    write the fact family for 2,11,and 9 ______________? ______________? _______________? ________________? I don,t understand of rule -.25 in $1.25 out $1.oo in $0.30 out $0.05 in $___ ? out $0.75 in 2.40 out _____? please help me!!
  34. Math(Urgent Please help)

    Find the area of the parallelogram that has the vectors as adjacent sides. u = i + 2j + 2k V = i + k I know that the magnitude of the cross product results on the area. After I do the cross product then what to I do?
  35. math

    what are all the coins? I know about the penny, dime, nickle, and quarter, but I'm not sure about the loonie and toonie. please name all the canadian coins.Thank You:)
  36. math

    Given the linear equation y=-3/2x+1, find the y-coordinates of the points (-4), (-2), and (6). Please show all of your work. Plot those points and graph the linear equation.
  37. math

    Given the linear equation , find the y-coordinates of the points (-6, ), (-3, ), and (3, ). Please show all of your work. Plot those points and graph the linear equation.
  38. Math PLEASE HELP

    solving for X: 3000=8800(1+(0.025)x) I divided both sides by 8800 got 15/44= 1+0.025x subtracted each side by 1 then got -29/44=0.025x = -26.36.. Is that right?
  39. Math PLEASE HELP

    solving for X: 3000=8800(1+(0.025)x) I divided both sides by 8800 got 15/44= 1+0.025x subtracted each side by 1 then got -29/44=0.025x = -26.36.. Is that right?
  40. Math PLEASE HELP

    solving for X: 3000=8800(1+(0.025)x) I divided both sides by 8800 got 15/44= 1+0.025x subtracted each side by 1 then got -29/44=0.025x = -26.36.. Is that right?
  41. Math

    Betty made 3/4 of the baskets she attempted in a basketball game. Which other ratio is equivalent to the number of baskets Betty made? A) 6/12 B) 9/12 C) 12/20 D) 18/20 Can someone explain please.
  42. math hw

    in 1997 there were 3344 amusement parks in the u.s.. this decreased by 148 in 2002 then grew by 47 by 2008 how many amusement parks and arcades were there in 2008? please show work
  43. MATH

    LAST YEAR BOB'S AGE WAS A SQUARE NUMBER AND NEXT YEAR IT WILL BE A CUBE NUMBER. HOW OLD IS BOB NOW ? PLEASE EXPLAIN HOW YOU WORK IT OUT ,THANKS
  44. math work

    a dress orginally sold for $120 is now being sold for $96. by what percent was the prginal price of the dress discounted? please show work.
  45. Math - Please help

    The population standard deviation of people who shop online is 3.1. If you want to be 75% confident that the sample mean is within 10% of the population mean, how many people must be surveyed?
  46. Math

    The sum of the speeds of two trains is 720.5 mph. If the speed of the first train is 3.5 mph faster than the second train, find the speeds of each. Please help? Thanks!
  47. math

    The lemonade recipe calls for 2 tablespoons or 1 ounce of food coloring for every gallon. How many cups of food coloring are there in 16 gallons of lemonade? Please help me and expalin.
  48. Math

    9(x+2)(x+1)-2(x+2)-4(x+1)=0 I'm in the middle of solving an equation. I know that you have to FOIL but how did they get 9(x^2+3x+2)-(4x+4)=0 ? I thought you distribute the 9 through (x+2)(x+1). and why is it (4x+4) instead of (4x-4) because -4 x 1 = -4 .... Please help me ...
  49. math

    Hal Fritz purchased a $5,000 bond at 95. The annual interest is 6%.What was the cost of the bond? What was the annual interest? What is the yield (to nearest tenth of a percent)? please help
  50. math

    what does linear an nonlinear functions mean? I need help asap please i am begging you because i am a new student at this school and i don't get what the difference is between linear and nonlinear functions.
  51. math

    The iength of a rectangle is 3 inches greater than its width and its area is 88 square inches.An equation that may be used to find the width w of the rectangle is a. 3w^2=88 b. w^2/3=88 c. w^2+3w-88=0 d. w^2-3w=88 e. w=29.3 please answer and explain
  52. Math

    PLEASE HELP!!!!!! I don't understand the question! The cost (C) of photocopies is 6 cents each for first 30 and 4 cents for each one after the first 30(Use x for the total number of photocopies. Assume x> 30]
  53. Math Pre-Algebra

    Simplify the Expression(-8/15)+(1/15). Show how to simplify in steps, using a property of operations for each step. Explain the property you use in each step. Can you help me please?
  54. math

    How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? Please Help, Thank you =)
  55. math

    jenny needs to make a total of 85 deliveries this week. so far she has delivered 34 of them. what percentage of her total deliveries has jenny completed? how do u figure this out please
  56. Math - Help!

    There are two 30 degree angles. One is pointing southwest, one is pointing northeast.What are these pair of angles? A. adjacent B. complementary C. supplementary d. non of these I don't know if it is A or D, please help!
  57. MATH PROBABILITY

    From a group of 4 women and 8 ​men, a delegation of 3 is selected. Find the expected number of women in the delegation. Can someone please help me find this answer?
  58. 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?
  59. math geometry

    Please help so hard. My problem... In the coordinate plane point C lies on line segment AB. The coordinates for MN are (2,4) and (16,12). If the ratio of the length of AC to the length of CB is 3:4, what is the x-coordinate of point C?
  60. math

    If I give you $40 then the ratio of my money to yours is 4 : 5. On the other hand, if you give me $40, then the ratio is 8 : 1. How much money do both of us have? please show all steps
  61. Math

    Topic: use function notation to evaluate equations. Evaluate the given equations for the indicated function values The questions I need help with; f(n)=5^n f(2)= f(3)= and f(n)=-n f(9)= f(-11)= Please, explain & help me :(
  62. Math

    Write an equation in point slope form for the line through the given point with the given slope (-3,-5);m=-2/5 Options Y+5=-2/5(x+3) Y+5=(-2/5)x-3 Y-5=-2/5(x+3) Y-5=-2/5(x-3) Help please I believe the answer would be b?
  63. Math %

    Please advise how do I get the Regular % and the Cummulative % I just need one example other wise I will lose what's left of my mind. Defect Description Qty Improperly Sized 258 Bad Seam 153 Missing Buttons 67 Fabric Flaw 22 Total 500
  64. Math

    An equation of the tangent line to the curve y=f(x)=x(4cosx−6sinx) at the point (3f(3)) is y =? Note: Please follow these instructions carefully: (a) Express f(3) and f(3) in terms of . Simplify those expressions by evaluating the exact values of sin(3) and cos(3). (b) ...
  65. math

    A chartered bank is raising the interest rate on its Visa credit card from 9% to 11%. What will be the percent increase in the interest charges on a given balance? Note: Please make sure your final answer(s) are in percentage form and are accurate to 1 decimal place. For ...
  66. math

    Sorry i could not understand log. Could you explain it in simpler terms? I am in class 7. The question was if a sum of money doubles in 8 yrs, in how many years will it triple itself?Is the answer 16? If it is please tell me how to show the workings. I understood the concept ...
  67. Math (Calculus AB)

    For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you very much.
  68. Math (Calculus AB)

    For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you very much.
  69. Math Word Problem

    Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 6-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? (Please round your answer to one decimal place.)
  70. math

    You have a nickel, a dime, a quarter and a half dollar. A clerk shows you several items, each a different price, any one of which you could buy with your coins without receiving change. What is the largest number of articles he could have shown you? a. 8 b. 10 c. 13 d. 15 e. ...
  71. Math- PLEASE HELP!! I DONT GET THIS QUESTION!!

    Molly bought two sweaters for $30 each and three pair of pants for $25 each. She had a 20% off coupon for her entire purchase. Model and write an expression for the amount of money Molly spent. State your answer in a complete sentence.
  72. Math help please?

    I have a hard time understanding the process of adding fractions with unlike denominators, and I usually will go on Khan Academy to look at tutorials and walkthroughs but I can't do that during school (only when I'm doing my homework @ home). Can somebody put it simply? ...
  73. math help

    okay can someone set this up for me and help me understand it please.I tried it but i am clueless please show me how to solve this? The number of banks in the United States has dropped about 30% since 1992. The following data are from a survey in which x represents the years ...
  74. Social Studies 8R - Paragraph Check

    Please check my paragraph to see if it's good. If there any detials I should add please let me know. Also please let me know if there any grammar errors. Obama Win When Barack Obama was re-elected I was ecstatic. Obama is a really good president and he deserve to be president ...
  75. Mathamatics

    True Or False Questions: The term insurance has no value as an investment and is the least expensive type of life insurance. Liability insurance protects a homeowner against injury to other people on his property. After these my math is done. Someone please help me. Thank You.
  76. Math

    For $4.50 a grocer buys a case of fruit which contains 14 dozen. She knows that 4 dozen will spoil before she sells them. At what price per dozen must she sell the good ones to gain 1/3 of the whole cost? is there any quick way to do this question. please respond.
  77. Math Word Problem

    Steve's boat will go 14 miles per hour in still water. If he can go 13 miles downstream in the same amount of time as it takes to go 10 miles upstream, then what is the speed of the current? (Please round your answer to one decimal place.)
  78. math (4)

    Sketch the graph (Do this on paper. Your teacher may ask you to turn in this graph.) and find the area of the region bounded below by the graph of the function and above by the x axis from x = 0 to x = 1. f(x) = -xe^(-x^2) Note: People have been telling me that the two lines ...
  79. Math 7 - NYS Math Exam Review Help! (Q2)

    9. Eric's mother wants to help him with his math homework. She puts 24 cookies in a cookie jar. Twelve (12) of the cookies are chocolate chip, 8 are oatmeal, and 4 are peanut butter. She then has Eric select a cookie from the jar without looking. Next, without replacing the ...
  80. Physics

    I agree with this and see were it comes from net force = (delta p)/t so momentum is conserved when net force equals zero... net force = (delta p)/t 0 = (delta p)/t however the following is not true 0 = (delta p)/t = P - Po were p is momentum and Po is used to indicate inital ...
  81. Mathematics

    A Pendulum 45cm long swings through a vertical angle of 30degrees. Find the distance of the altitude through which the pendulum bob rises. (I couldn't find this answer either :\ but can anyone please please help me! And if you can, can you also write the equation on how you ...
  82. Intermediate Algebra

    Solve using elimination method. If the system has no system or infinite number of solutions, state this. Please show all work. I need to show how I came about my answer. I need this as soon as possible please. I would appreciate any and all help!! 2x+2y=20 2x-2y=4
  83. Physics please help

    Two long straight aluminum wires, each of diameter 0.30mm, carry the same current but in opposite directions. They are suspended by 0.50m long strings...If the suspension strings make an angle of 3.0 degree with the vertical, what is the current in the wires? please help out I...
  84. Physics please help

    Two long straight aluminum wires, each of diameter 0.30mm, carry the same current but in opposite directions. They are suspended by 0.50m long strings...If the suspension strings make an angle of 3.0 degree with the vertical, what is the current in the wires? please help out I...
  85. PLEASE COULD SOMEONE HELP ME OUT

    Two long straight aluminum wires, each of diameter 0.30mm, carry the same current but in opposite directions. They are suspended by 0.50m long strings...If the suspension strings make an angle of 3.0 degree with the vertical, what is the current in the wires? Thank you......
  86. Science - Please Check my Answer

    My problem: A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the second half of the swim? My answer: 1.60 m/s to the south Please check! I will really...
  87. Science Please Help!!!

    A woman with a genetic disease marries a man who does not carry the disease. It is not possible for their children to carry the disease. The disease must be a) sex - linked b) recessive c) dominant d) cause by an extra chromosome I think the answer is recessive, can someone ...
  88. Chemistry

    Ytterbium, atomic number, 70 is the first element in the periodic table to have the first four shells full. work out the number of electrons in the fourth shell/ level of ytterbium? Please show all working out with no abbreviations and please help
  89. calculus

    answer the questions about the following function f(x)= 10x^2/x^4+25 a. is the point (-sqrt 5,1) on the graph b. if x=3, what is f(x)? what point is on the graph of f? c. if f(x)=1, what is x? what points are on the graph? d. what is the domain of f? e. list the x-intersepts? ...
  90. Math median

    please check my answer thanks :) find the median of following numbers 463 582 401 533 457 514 and 438 my answer is 463
  91. Math

    Draw a pair of quadrilaterals where the 1st quad. is congruent to the 2nd quad. No side of one quad. is to be congruent to any other quad Straight out of workbook! PLEASE HELP!!!!!!!!!!!!
  92. Math

    I have forgotten how to do ratios...Please help. The standard ratio of(number of treatments) and (total mL dose) are 3.5 to 2mL. If only 2 treatments are given, how many total mL doses are given?
  93. Math

    I have to use the numbers....24-12-7-2 and use any combination of division subtraction multiplication and addition to come up with a final sum of 24. I have tried every combination i know of. please help
  94. Math

    What are the odds against getting three heads in three successive flips of a coin? Odds against A = (1 – 3/6)/ (3/6)= 3/5 = 3::5 Could someone check my answer and correct me if I need it please
  95. math-DUE TONIGHT PLEASE HELP

    A shoe store carries one brand of shoe in 3 styles, 5 sizes, and 4 colors. How many different shoes are available for this one brand?
  96. Math

    There are 4 six-packs of soda in a case. Chris bought 1/2 of a case and gave 1/3 of what he had to Dana. How many cans of soda does Chris have left? Could you help me with this problem, please? Thanks..
  97. Math

    Which of the following is NOT a real number? (Please explain why!) (1) -1 (I already ruled out this answers because integers can be real numbers) (2) square root of 3 (3)square root of -3 (4)0.101001000100001...
  98. math

    a dollar bill has an area of 15.86 square inches. If a dollar bill is 2.6 inches long, how wide is it? Also, please explain how you got the answer because i am very confused.
  99. math

    Solve. Please show all of your work. Find the length and width of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width.
  100. math

    Tony and Karen are having friends over for hotdogs. Tony bought 5 bags of hot dog buns with 8 in each. Karen Bought 6 pakeges with 6 in each pakage? HELP ME PLEASE =c
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