math..solve for u again

155,622 results, page 80
  1. math

    arianna's mom deposits $80 in her lunch account. Lunch costs $2.50 per day. Write and solve an inequality to determine when there will be less than $20 in her account. I'm not sure how to set this up. would i subtract $80 to add it back to $20 on the other
  2. Business Math

    Solve the following by using the present value formula. Compound Amount- $675 Term of Investment-15 months Nominal Rate (%)- 2.7 Interest Compounded quarterly Present Value ___________? Compound Interest _________?
  3. math(urgent)

    $1000 was invested for two years at 10% simple interest .calculate the effective rate was earned. pls check my solve (1+0.1/2)^2-1 = 0.1025 but the true answer is 9.54% pls help me to get the formula of effective rate
  4. Math

    Hello, I can not solve problem from analytical geometry. If you can help me to find out what is wrong in my procedure and show me a better one I would be really gratefull. There are given 3 points A(2,2,3), B (6,3,0), C(3,-1,-1). On the x ax-axis lies
  5. 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
  6. Math

    Brad is paid time-and-a-half if he works over 40 hours in a week. one week he worked 55 hours and earned $697.50.Write and solve an equation that can be used to find Brad's regular hourly rate.
  7. Math!!!!

    Determine the value(s) of 'K' that will give (k-1)x^2-5x + 10= 0 two imaginary roots. k so the thing I know is that the discriminant is d<0 so do I solve for k? I know I would use this formula: b^2-4ac but how would I get into a formula I can work with
  8. Math

    Stupid question time. I need to figure out how to rearrange equations to solve for x in my chemistry homework, which involves putting equations in quadratic form first. But I can't for the life of me remember how to "rearrange" them correctly. So what in
  9. Urgent help here! Math

    Solve for the area when a rectangle of length 4cm and width 3cm has one vertex at the origin of a system of axes and another vertex on a quarter of a circle whose center is also at the origin. Find the shaded area?
  10. Math

    Solve the following quadratic equation(as exact values) using the quadratic formula. x^2-10x-15=0 I got 5+-2sqrt10/2. ^ Sorry hard to write it out. But basically there is a 5 there, the negative sign is supposed to be under the positive sign, then there is
  11. Math

    I am confused on this. Can anyone show me where to start on how to solve it? Given the cipher and function below, decode the following message: 14-2-21-9 10-20 7-22-15 Function: f(x)=2x-2 Cipher A=2, b=4, c=6, d=8, e=10, f=12, g=14, h=16, i=18 j=20, k=22,
  12. math-precalculus

    sin(6x)cos(11x)+cos(6x)sin(11x)=-0.1 solve for all solutions and provide steps so I can follow.. thank you
  13. math

    solve for a a x 25 = ( 7 x 20 ) + ( 7 x 5 )a multiply it out. 25a=140+35a subtract 35a from both sides -10a=140 divide both sides by -10
  14. Math

    What operation do I use to solve this problem? Ed's car can travel 93.5 miles on 4.25 gallons of gas. How far can the car travel on 1 gallon of gas?
  15. 7th grade math Ms. Sue plese

    Can you please help me solve these problems? I have no idea! 2. w over four – 4 = 3 (1 point) –4 28 3 11 3. d over three+ 10 = 7 (1 point) 51 20 0 –9 6. –6 – 7(c + 10) (1 point) 64 – 7c –76 – 7c 4 – 13c –16 – 13c 7. 2x + 3(x – 2)
  16. Math

    Solve: Richard has 17 yards of material. How many tote bags can he make if each bag takes 2/3 yards of material to make?
  17. Math-Geometry

    Solve for X using the side-splitting theorem for a triangle: upper left= 6x-10, upper right= 5x, lower left= 4x+8, lower right=4x
  18. Math

    solve by graphing x-2y=8 and x+2y=0 x=8+2y points (10,1), (12,2)would be graphed x=0-2y points (-2,1), (-4,2)would be graphed to form a slope i got the graphing correct but what would be the would i write it?
  19. math

    Solve the following equation for theta (θ) over the given domain: √3 sin 2θ = cos 2θ Domain: 0 < θ < 360
  20. Math

    How do you solve this: A 20-ounce bag of popcorn costs $2,80. If the unit price stays the same, how much does a 35-ounce bag of popcorn cost?
  21. Math

    An elevator, when full, holds 20 children or 15 adults. If 12 children are on the elevator, how many adults can still get on? Use an algebraic equation to solve this problem.
  22. Math - Division

    I can't quite solve this question. Of 98 bicycles in a bike rack, 67 are mountain bikes. What fraction of the bicycles are not mountain bikes?
  23. math

    how do you solve this.prove: cos2A plus cosA divided by sin2A minus sinA equal to cos2A plus 1 divided by sinA
  24. Math

    can someone please help me solve Miguel has a box of markers for coloring. He is using 1/4 of the markers and his friend Kevin is using 3/4 of the markers. The fraction of the markers left in the box is
  25. math,correction

    Problem 10 use the quadratic formula to solve each of the following quadratic equations. 2x^2-5x = 3 My answer: solutions are 3 and - (1)/(2) Problem 16 3x^2-2x+1=0 My answer: (2+- radical (-8))/(6)
  26. math 2

    pedro gets 8 hours of sleep each night. how many hours does pedro sleep in a yeat with 365 days? please solve the problem?
  27. chemistry

    hello, I can't seem to solve this question. i tried to look up someone else who may have asked this question. I found this girl named Sara,but her answer didn't really help me much because it did not answer the question. What is the pH when enough 0.10 M
  28. Math

    hello! I really need help with this math problem on a portfolio I am doing, I know you're not supposed to give answers out and I'm not asking for any answers but I honestly don't understand this I've watched the profolio recording as well and help from
  29. Algebra

    10. Solve each radical expression. Check your solution. 1=√(-2v-3) 11. Solve each radical expression. Check your solution. √(n+5)= √(5n-11) 12. Tell which solutions, if any, are extraneous for each question. √(12-n)=n; n= -4,n=3
  30. ALG

    Solve. Write the solution set using interval notation. x2 + 16x + 64 > 0 Solve. Write the solution set using interval notation. x − 4/ (x + 1)(x − 1) ≤ 0
  31. Chemistry

    The output of a diesel generator, which contains a mixture of CO2 and H2O gases, is collected in a sealed vessel at 447 K. As the mixture cools to 298 K, the pressure falls from 3.0 atm to 0.80 atm. What is the ratio of CO2 to H2O in the mixture? Have you
  32. 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^u see exponential functions. dy/dx=2y^2 and if y=-1 when x=1, then when x=2, y=? how do i get x
  33. math

    A geologist at point A measures the distance and angle of elevation to two columns of the Glen Rose formation in Texas. If the distance AS=796 ft and the distance AN=850 ft, compute the difference in the heights of the two columns to the nearest foot. What
  34. Math

    A geologist at point A measures the distance and angle of elevation to two columns of the Glen Rose formation in Texas. If the distance AS=796 ft and the distance AN=850 ft, compute the difference in the heights of the two columns to the nearest foot. What
  35. Math

    How do I work this out? Corporate bonds issued by Johnson Corporation currently yield 11%. Municipal bonds of equal risk currently yield 6.5%. At what tax rate would an investor be indifferent between these two bonds? My answer is: 6.5%/1-11%=7.3 (7.3)(1-
  36. College Algebra

    I REALLY don't understand the reason/basis/use of logarithms. I have listened to my teacher, who never is clear on much of anything (it would help if he spoke better English), and a more advanced student, who couldn't explain them to me. The problem I am
  37. chemistry

    Lead pipes were once used to transport drinking water and are still found in some older homes and city water systems. Suppose the lead concentration and pH of the water determined by lead (II) hydroxide (Ksp = 2.8x10^-16) dissolving to produce a saturated
  38. physics

    A toy car with a mass of 120 g moves to the right with a speed of 0.56 m/s. A small child drops a 25.0-g piece of clay onto the car. The clay sticks to the car and the car continues to the right. What is the change in speed of the car? Consider the
  39. trig

    2. Determine the amplitude of: y= cos x 3. Determine the domain of: y= 4 sin x 4. Determine the range of: y= - sin x 5. Determine the period of: y= 3 sin ðx 6. Determine the phase shift of: y= 3 cos (2x -1) 7. Solve the following equation for indicated
  40. Math/Algebra

    Please help me with this, below is a question I have to answer…below that is my answer…did I do, or answer this correctly? Post a response of at least 50 words to the following: Explain how to graph linear equations using the x- and y-intercepts.
  41. CHEM

    A gaseous hydrocarbon (an organic compound consisting of C & H) weighing 0.232g occupies a volume of 102mL at 23 degrees Celcius and 749mmHg. Calculate the molar mass and identify the compound. The compound is: a)C2H4 b)C3H6 c)C4H8 d)C5H10 e)C6H12 How is
  42. physics

    A 2000-kg car rounds a circular turn of a radius 20m. if the radius flat and the coefficient of friction between tires and road is .70, how fast can the car go without skidding? centripetal force = frictional force m v^2/r= mg*mu solve for v. um i was
  43. Physics/Math

    What are the x and y components of a vector a in the xy plane if it's direction is 215 degrees counterclockwise from the positive direction of the x axis and its magnitude is 12.9 m ? you would be in the third quadrant, so both x and y are negative. The
  44. math

    i am supposed to solve this word problem using system of quatino methods The annual cost of owning and opearting a car, C dollars, is a linear function of the distance, d kilometers, it is driven. C=md+b the cost is $4600 for 10 000km and $9100 for 25
  45. math

    I am confused on how to solve this problem, can you help me? It says the distance around the outside of Cedar park is 0.8mile. Joan ran 0.25 of the distance during her lunch break. How far did she run? A. 0.2mile B. 0.25 mile C.1.05 mile D. 2 miles I did
  46. math: permutations

    Hi, I need your help. I just cant figure out how to solve this problem. Question: There are two rows of chairs. The first row has two chairs and the second row has four chairs. In how many ways can six people be seated if a couple from the group must sit
  47. Physics

    Ok I asked this question before A lbock is given an intial speed of 4.0 s^-1 m up the 22 degree plane How far up the plane will it go ok I got this to be something like 2.2 about i understand this i need help on this how much time elapses before it returns
  48. Help!!

    1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the
  49. Math :)

    1.Try to solve this problem without using a formula. Suppose a disease is transmitted from an individual to one other during the period of a week. Each of those two gives the disease to two more people in the second week, so that the total of newly
  50. Math

    The resistance(r)of a wire varies directly as the length(L)of the wire and inversely as the square of the diameter(d). If the resistance is 9ohms in 50ft of wire that has a diameter of 0.05in, find the resistance in 50ft of a similar wire that has a
  51. math

    solve the problem (1500*30*400)-1/2*(1500*30*400)
  52. math

    How do I solve absolute value bar 5p plus 12 absolute value bar equals 7?
  53. Math

    What would the absolute value be? \ 2-3\ if you solve it the answer comes to -1 but can you have a negative as your answer for absolute value?
  54. math

    is the answer to this question right? solve for "y" Question: 6x+8y-5=0 Answer: 3/4x-5/8=y is it right (if not can u correct it for me)
  55. math

    solve the expression √12 x √30 -√20 x √8 simplifies to
  56. Math

    (<=) less than equal to sign (>=) greater than equal to sign Solve 2.7(<=)b+5 a. b(>=)7.7 b. b(>=)-2.3 c. b(<=)2.3 d. b(<=)-7.7
  57. Math

    log (base 9) (x-2) + log (base 9) (x-2)=1 Solve algebraically.
  58. math

    how do you solve 8-3x=the square root of 4xsquared+ the square root of 20 + 8
  59. math

    1.3:75 to a percentage 2.1:30 to a percentage 3.4/8 to a ratio 4.20/100 to a ratio 5.solve for x: 1.7:8 ::21:x 2.6:10::x:40
  60. math help!

    (2-√2)/(3+√2) can you plz tell me how to solve it? plz hurry up
  61. Math

    What is a quadratic formula? how can i solve x^2 + 8x + 12 = 0 applying quadratic formula?
  62. Math

    Solve the Identity cot (x)/ (csc(x)-1)= (csc(x)+1)/cot (x)
  63. Math

    Solve the system using substitution. x = y − 6 y = 6 − 3x A. (0, 6) B. (6, 0) C. (0, −6) D. (−6, 0)
  64. Chemistry

    I had to find the absolute zero from a graph with the following points: Temperature (K) / Volume (mL): 318 4.5 308 4.3 303 4.1 294 4.0 284 3.9 275 3.7 271 3.2 I graphed the points (with the temperature on the y-axis because the lab indicated a vertical
  65. Finance

    You will need the following info to solve the problem: You can cover a sheet of paper with 6 $100 bills There are 500 sheets of paper in 1 ream There are 10 reams in 1 carton Imagine that you have inherited $1 million . The bank has only $700,000 in $100
  66. Math

    Write the inequality and solve for the following question: the result of 6 subtracted from a number n is at least 2, A. n-2>6;n>8 B. n-6>2;n>8 these arrows have a line under them.*** C. n+6>2;n<4 these arrows have a line under them. D.
  67. Math

    how i solve this two equations ib order to find alpha and beta 2=cos(alpha)+1.341cos(beta) 2=sin(alpha)-1.341sin(beta)
  68. math

    I'm not sure of how to solve word problems. The question is,"One lawn fertilizer is 24% nitrogen and another is 12% nitrogen. How much of fertilizer should be mixed to obtain 100 kg of fertilizer that is 21% nitrogen?"
  69. Math

    there are 680 coins divided into 3 piles. The second pile has three times as many coins as the first. The third pile has 50 more coins than the second pile. Solve This problem using a tape diagram.
  70. math

    I'm not sure of how to solve word problems. The question is,"One lawn fertilizer is 24% nitrogen and another is 12% nitrogen. How much of fertilizer should be mixed to obtain 100 kg of fertilizer that is 21% nitrogen?"
  71. Math

    How can I find the point of intersection of the graphs x^2=y=4 and 2x-y=1 by hand? I can do the problem using a calculator, but I don't know how to do it by hand. I tried using substitution, but I ending up getting x^2+2x-5=0. It would not factor evenly.
  72. Math

    How do I solve problems like the following? There area approximately 5.58x10^21 (scientific notation) atoms in a gram of silver. How many atoms are there in 3 kilograms of silver? Express your answer in sicientific notation. ANY hints/tips are EXTEMELY
  73. math

    i don't know how to work these problems out so i'll just pick a random one out from my home work and if someone could explain it to me step by step that would be very helpful. Solve the tragicomic expression for all answers between 0 degrees and 360
  74. Math

    Solve for x 2^x+1 - 2^x = 112 Put this in exponent form: (3square root of x) ( square root of 3 cubed) Put into equation form: Horizontal stretch of 2, up 3, left 6, reflection on x-axis. Please help me with these three so I can work on the rest using
  75. math

    The length of a rectangular room is two feet less than three times its width. The area of the rectangle is 176 square feet. a) Write an algebraic equation to model this problem. b) Solve the equation to find the dimensions of the rectangle.
  76. gr 11 Math

    Solve for x 2^x+1 - 2^x = 112 Put this in exponent form: (3square root of x) ( square root of 3 cubed) Put into equation form: Horizontal stretch of 2, up 3, left 6, reflection on x-axis. Please help me with these three so I can work on the rest using
  77. Math

    1)AP has U6=12.5 and U19=32 a+5d=12.5 (&) a+18d=32 (2) (2)-(1), d=1.5 therefore, a=5 (a)What is the nth term?Tn=5+(n-1)1.5 (b)What is the sum of 4 terms between U10 and U13 inclusive? 2)Un=1/2^n-3 (a)What is the nature of this sequence? (b)Calculate the
  78. math

    A certain canoe was advertised as having an "800 pound capacity," meaning that it can hold at most 800 pounds. If four people plan to use the canoe and take 60 pounds of supplies, write and solve an inequality to find the average weight per person.
  79. math

    A certain minivan has a maximum carrying capacity of 1,200 pounds. The luggage weighs 150 pounds. Write an solve an inequality to find the maximum weight allowable for passengers. I got x+150 >= 1200 Im not sure if it's correct
  80. Math

    Meredith worked 5 hours on Tuesday and 7 hours on Friday. Her total gross pay for the week was 72 dollars. How much does Meredith earn in 1 hour? a. Write an equation to represent the situation and solve the equation algebraically.
  81. math

    : Hi helper, thanks for the help, this website is very good and it would not of been possible without your assistance. Here is a question i would like you to solve for me this time ....................................... let ABC be a triangle. Two straight
  82. Math

    What is the GREATEST number of pictures each 2.5-inches by 3.5-inches, that a photographer can print on an 8-inch by 10-inch piece of sensitized paper? Isn't the answer supposed to be 4, because once you cut it you cannot put it back together. Please tell
  83. math

    an architect wants to draw a rectangle with a diagonal of 13 inches.the length of the rectangle is to be 2 inches more thn twice the width.what dimensions should she make the triangle. (a)set up an equation: (b)solve the equation: (c)write a sentence that
  84. math(urgent)

    At the end of every year for 3 years, RM1000 will be invested in an account that offers 8% compounded annualy.Find the account amount at the end of the 3 years. the answer is $ 3246.40 in my calculation i solve 1000(1+o.08/1)^(3-1) =11664
  85. 7th grade math help asap please

    1. -1/9 + (-5/7) = ? 2. 11/12 + (-2/3) = ? 3. What is the difference between an irrational number and an integer? 21. A length of ribbon is three and one-half yd long. How many pieces one and five-ninths yd long can Joy cut from the length of ribbon? (1
  86. math

    A (yearly) cash flow stream is x=(-40,10,10,10,10,10,10). The spot rates are (yearly in percentage) s=(5.0,5.3,5.6,5.8,6.0,6.1). Use the discount factors to determine the (net) present value of the stream. (I got a little confused here. Should I 1. use the
  87. math

    Solve the problem. A shirt company has 4 designs that can be made with short or long sleeves. There are 5 color patterns available. How many different types of shirts are available from this company? a. 9 types b. 40 types c. 11 types d. 20 types

    cAN SOMEONE JUST SHOW ME HOW TO GET THE EQUATION IN ORDER TO SOLVE IT MYSELF. i'LL APPRECIATED. bUSINESS AND FINANCE. The Randolphs used 12 more gal of fuel oil in October than in September and twice as much oil in November as in September. If they used
  89. Urgent math

    i need help with these two homework problems Use the Laws of Logarithms to combine the expression into a single logarithm log2 5 − 5 log2 x + 1/2 log2(x + 1) Solve the logarithmic equation for x log2(x + 2) + log2(x − 1) = 2
  90. math

    Find out how many calls must be made to make Plan A the better deal. • Plan A: $45 a month for unlimited calling Plan B $15 a month .10 per min. I need to write a cost equation for plan A and for plan B then I need to solve.
  91. Math

    Solve the mathematical puzzle. Determine the digits of R from these clues. The first digit is the answer when the third digit is divided by 2. The second and third digits add to 7. The second digit minus the first digit is 1. R is a three-digit number:
  92. Algebra2

    Use the formula D=rt where D is distance, r is rate, and t is time. The distance is 40 Julio finishes the 40 yd dash in 4.39 seconds. Rich finishes it at 6.18 seconds 1. Solve D=rt for rate. (1 pt) D/t=r 2. Use the statistics given in Act Two and your
  93. Math(Factorial)

    A women student is to answer 10 out of 13 questions on a test. Find the number of choices where she must answer: (a) the first two questions; (b) the first or second questions but not both; (c) exactly 3 out of the first 5 questions (d) at least 3 of the
  94. Math

    The table shows Marco’s checking account activity for the first week of June. a. Marco wants his total deposits for the month of June to exceed $1,500. Write and solve an inequality to find how much more he needs to deposit to meet this goal. b. Marco
  95. Physics repost please help

    The mass of a string is 6.0 x 10^-3 kg, and it is stretched so the tension in it is 195 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string? Isn't wavespeed=
  96. algebra

    this is the hardest problem people said it was the hardest andf they can not solve it can anyone solve this please it is hard In a basketball game, Garrett and Logan scored a total of 19 points. Logan and Ray scored a total of 14 points. Logan scored as
  97. Algebra

    The formula to compute a person's body mass index is B=703*w/h2 B represents the body mass index, w is the person's weight in pounds and h represents the person's height in inches. I need to: a. solve the formula for w. b. What is the weight to the nearest
  98. physics

    This is a sample question: A man jogs at a speed of 1.2 m/s. His dog waits 2 s and then takes off running at a speed of 4.1 m/s to catch the man. How far will they each have traveled when the dog catches up with the man? The answer is 3.3931 m. I just need
  99. math,help

    can someone set this up for me as an equation so i can solve it. thanks A garden area is 30ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft^2, what is the width of the path. see the frame
  100. math

    same question, but it didn't come across right. 500 equals 1 over X to the half 500 = 1/(X^1/2) Multiply both sides by X^1/2. 500*X^1/2 = (1*X^1/2)/X^1/2. X^1/2 divides out on the right side leaving 500*X^1/2 = 1. Now square both sides. [500*X^1/2]^2 = 1.