1. calculus

    Having a really hard time with this! e^8x^2-5 = 14 solve the exponential equation express in exact form. Someone please help!
  2. Math - Exponential equation

    Solve the exponential equation. Express your solutions in exact form only. Please show all of your work. 5e^(x log(9)) = 11
  3. algebra

    solve the exponential equation Express in exact form. 5e^xlog_9 = 11 Is x = (ln11-ln5/log_9 exact form??????
  4. precalculus

    solve exponential equation. express in exact form. e^x-42e^-x= -19
  5. precalculus

    solve the exponential equation express in exact form only show all work. 2e^x= squareroot 10e^x +3
  6. college algebra

    Solve the exponential equation. Express your solutions in exact form only. Please show all of your work. 3^x-70*3^-x=9
  7. Math - 2

    Solve the exponential equation. Express your solutions in exact form only. Please show all of your work. (e^(2x) – 10e^x) / 13 = 3
  8. pre calculus

    Solve the exponential equation Express you solutions in exact form only Please show your work e^2x - 9e^x - 20 = 2
  9. Algebra-please check my answers

    Solve the equation by expressing each side as a power of the same base and then equating exponents. 9^(x - 9)/8= sqrt of 9 i got 13 4^(x + 10) = 8^(x - 6) i got 38 Solve the exponential equation. Express the solution set in terms of natural logarithms.
  10. exponential equation-Algebra

    Solve the exponential equation. Express the solution set in terms of natural logarithms. 4^(x + 4) = 5^(2x + 5)-This question I don't understand.
  11. Algebra Help

    Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x. Does this work? Thanks! Exponential form is 2^-3=1/8 To Check: 2^-3=1/2^3=1/8
  12. ALGEBRA

    Solve the exponential equation. Give the exact value for x. (Express all logarithmic functions in terms of ln(x) in your answer.) text((a) ) e^x = 10 x = text((b) ) e^x = 2.0 x = text((c) ) e^x = 37.9 x =
  13. precalculus

    Solve the logarithmic equation. Express your solutions in exact form only. 18e^-x -e^x=7
  14. logarithms

    Solve the logarithm equation. Express the solution in exact form only. log[6](64x^3+1)-log[6](4x+1)=1
  15. college algbra

    find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1
  16. math need help urgent

    find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1
  17. math need help urgent

    find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1
  18. Algebra

    f) Suppose you started with 100 bacteria, but they still grew by the same growth factor. Explain how your exponential equation in (b) would change. y=1*3x**** b) is Bacteria name: Staphylococcus aureus Generation Time: 30 minutes *Note: The generation time
  19. pre-calculus

    solve the equation 1. In x + In (x+12) =2 x= ? or either there is no solution 2. solve the exponential equation 9^x=6 What is the exact answer? 3. Use transformations to indentify the graph of the function. Then determine its domain, range, and horizontal
  20. Algebra

    How would I express what is below in the exponential form of an equation? Let x = 1og_2 1/8
  21. precalculus

    solve the logarithmic equation . express solution in exact form log5(x-9)+log5(x+4)=1+log5(x-5)
  22. Math

    Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log3(x+2) + log3(x+8) – 2 = log3(x+3)
  23. college algebra--need help please!!

    solve the following exponential equation. use exact answers only. not sure how to put it into the equation but it is 2 then 1-9x where the 1-9x is above the 2=e2x where the 2x is above the 2. Can someone tell me or explain to me how to put this equation
  24. calculus

    solve the following exponential equation. exact answers only 1-8x 3x ¨i =e *I know that I did not post this correctly but I do not know how to put the 1-8x above the pie symbol and 3x above the e.
  25. College Algebra

    1. Find the domain of the composite function f o g. f(x)= 2/x-3; g(x)= 7/x 2. Solve the following exponential equation. Exact answers only. 2^1-9x = e^2x
  26. Precalculus

    This is for solving exponential/logarithmic functions: (This is a base e Logarithmic function I would assume): e^(4x)/10 =4^x-2 ? I understand the properties of logs for the most part, but I have a hard time figuring out the step-by-step process on how to
  27. college algebra

    solve the following exponential equation. 7^x=8 a. x= Write in exact solution b. then with that answer move the decimal 3 points over
  28. College Algebra

    Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log base 6 (64x^3+1)-log base 6 (4x+1)=1
  29. MATH/ Check?

    Correct. what is pi The definition or the number? The number is 3.14159 but that isn't an exact number. pi doesn't have an exact number except by definition and that is in words and not a number. The ellipse in question above( is translated 4 units to the
  30. college algebra

    I think this is an exponential equation. I can not figure out how to put the equation into the TI-84 to get the approximate form 3/5 ln(5x-1)+1 =1.4 subtract 1 from sides and divide by 3/5 lh(5x-1)=0.6667 Put in logarithm form e^0.6667=5x-1 add 1 to both
  31. Algebra

    Solve each exponential equation. Give the exact value for x. I work them out and they are wrong what am I doing that is not right. 8^X=1/64 -2 3^x=6 In(6) In(3)or 1.63 8^x=6.5 0.624over In2 0r 0.900 3^x=4 2In (2) 0ver In3 0r 1.26
  32. Algebra

    Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x.
  33. Algebra

    Write the exponential form of the equation and solve the equation for x Let x = 1og_2 1/8
  34. algebra

    log9 1= _______ (fill in the blank) Let x=log2 1/32 . Write the exponential form of the equation and solve the equation for x.
  35. college algebra

    1. find the equation of the line with the given properties. Express the equation in general form or slope-intercept form. perpendicular to the line -3x_y= -27; contains the point (9, -1) the equation of the line is ? 2. solve the polynomial inequality and
  36. college alg

    solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?
  37. college algebra

    solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?
  38. calculus

    solve the following exponential equation. 5^x=4 a. what is the exact answer? **I think it is In4/In5 b. what is the answer approximated to 3 decimal places.
  39. Math-PLEASE HELP!!

    I have two questions That I need help with please!! 1. solve the following exponential equation. what is the exact solution? what is the decimal approximation when rounded three decimal places? 2.
  40. college algebra--I really need help!!

    solve the following exponential equation. exact answers only. 1-9x 2x 2 = e I hope that you understand this question. I don't and need some help please. Can you show all answers please.
  41. trigonometry

    Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
  42. trigonometry

    Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
  43. Algebra III / Core II

    It has been since the beginning of last year since I last did this math and the teacher I currently have is a sub and doesn't know what the heck she's doing either - so if anyone can help me, that'd be oh so amazing! a. Solve d=rt in terms of d and t. b.
  44. Maths

    Solve for x (exact solutions): sin x - sin 3x + sin 5x = 0 ¦Ð ¡Ü x ¡Ü ¦Ð ---------------- Thankyou. I tried find the solutions on my graphics calculator but however, the question is to find the EXACT solution(s) for the equation so I guess it will
  45. algebra

    Solving exponential and logarithmic equation. An example of an exponential equation is: Solve for x: 5^x=125
  46. hard math question

    When a certain drug enters the blood stream, its potency decreases exponentially with a half life of 6 hours. Suppose the initial amount of the drug present is A (sub 0). How much of the drug will be present after each number of hours? a. 6 b. 24 c. t
  47. Math

    -x^3 + 1.85x^2 - x +0.15 = 0 how can you solve for x? An exact solution or a numerical solution? Exact solutions can be obtained as follows: x^3 - 1.85x^2 + x - 0.15 = 0 First get rid of the quadratic term by substituting: x = (y + 1.85/3) You then obtain
  48. Trig

    h t t p : / / m a t h c e n t r a l . u r e g i n a . c a / Q Q / d a t a b a s e / Q Q . 0 9 . 9 9 / a n g e l a 2 . 2 . g i f give that picture how do I solve for (h) I know that you you From the diagram tan(3.5) = h/(13 + x) and tan(9) = h/x. Solve the
  49. math

    solve algebraically, express the roots in exact form 2sinxcosx-1=0 I got: 2sinxcosx=1 sin^2x=1 what do I do next? thanks in advance
  50. algebra 2

    Would some one look at these problems and see if I got them right Thanks Just let me if they are wrong so I can go back over them 1.Write in simplest form 48/56 A. 6/7 2.Multiply 8x^3/5 *10/x^3 A. 16/x^4 3.Divide 4/x^7 / 12/x^3 A. 1/3x^2 4. divide
  51. Math: Trig

    Help with vectors, please. Thanks 1) Express point in rectangular form. Give EXACT answer, if possible? (2, 4π /11) 2) Given P = (2. -3) and Q = (-3, -4). find the component form of vector PQ 3) The vector v has a magnitude of 25 inches and a
  52. Physics

    The Circuit contains a resistor R1, Resistor with R2 and an inductance L in series with a battery of emf ε0=V0 . R2 having a switch in parallel, the switch S is initially closed. At t = 0, the switch S is opened, so that an additional very large
  53. calculus

    solve the following exponential equation. 8^x=3 what is the exact answer? a. x= ? b. there is no solution what is the answer approximated to 3 decimal places? a. x= ? b. there is no solution
  54. Pre-Cal

    Convert the given exponential function to the form indicated. Round all coefficients to four significant digits. f(x) = 9e^3x; f(x) = Ab^x How do i solve the equation with this formula? Thanks
  55. math

    solve the following exponential equation:show your work. e^x-e^-x/2=7 1. write exact answer. 2.write answer approximated to 3 decimal places. whaaaat? smh I don't get it at all.
  56. Calculus - Seperable Equations

    Solve the separable differential equation (dy/dx)=y(1+x) for y and find the exact value for y(.3). dy/dx = y(1+x) dy/y = (1+x)dx Integral (dy/y) = Integral (1+x)dx ln (y) = x + (1/2)x^2 + C y = e^(x + (1/2)x^2 + C) y(0.3) = e^(0.345 + C) I am stuck here.
  57. math

    determine the equation of the line in y=mx+b form that passes through 1. (-8,1) & (-9, 2) 2. (3,7) & (-5, 9) 3, (-4,0) & (4,6) Part B ) For each equation Rewreite the y=mx+b equation in general form Ax+by+c=0 where A is positive b and C are integers In
  58. Math

    Express in exponential form: -3log5(z)-x^2=2x+1
  59. Math

    Solve 2x-y+3z=8 x-6y-z=0 -6x+3y-9z=24 Did you notice that your third equation has the same normal as the third one? So visually I see two parallel planes intersected by third non-parallel plane, namely the second equation. So solve equations 1 and 2, and
  60. Math

    Okay, Calculate. Write each answer in exponential form and in standard form. 1.) 3^2*2^3 2.) 2^5/2^3 3.) (3^2)^3 I dont' understand, Its already in exponential form.
  61. Algebra

    "Write a brief scenario that can be modeled with a linear equation. Summarize a situation modeled by a quadratic equation." Although I understand the difference between the two, I'm having a hard time creating problems that express them.
  62. Math log equations/exponential form

    How do i express this to exponential form? a) log√2(w^2 x^3/y^5 z^7) b) log(x^2 y^3 √z-1)
  63. Algebra

    Write the equation of the line containing the given point and parallel to the given line. The equation of the line is y= ?... 1. Express your answer in the form y=mx+b. (7,8); x+7y=6 2. Express your answer in the form y=mx+b. (-4,8); 8x=7y+9 3. Express
  64. math

    solve for x by writing the equation in exponential form: log sub 4 x=-2 log sub 5 (2x + 1)=2
  65. trig

    Solve the equation. Express your answer in trigonometric form. x^5 - 11 = 0
  66. math

    express each answer in exponential form using the indicated bases 4x4x4x4,base 2
  67. Calculus

    Two cars start moving from the same point. One travels south at 60 mph and the other travels west at 25 mph. At what rate is the distance between the cars increasing 2 hours later? Let x = the distance covered by the south traveling car. Let y = the
  68. precalc

    2^(3x + 1) = 3^(x − 2) (a) Find the exact solution of the exponential equation in terms of logarithms.
  69. Chemistry URGENT

    I am having a hard time understanding how to calculate pH. my textbook states that that pH =-log[H^+]. I have two questions that asks: What is the H^+ concentration in an acid with of pH 4.6? Express your answer as a power of 10. What is the H^+
  70. math

    how do you express the inverse of exponential equation
  71. math

    how do you express the inverse of a exponential equation
  72. Exponential Word Problem

    An investment pays 3.5 percent interest, compounded quarterly. a) write an equation to express the amount A, of the investment as a function of time, t, in years. The answer is A(t)=P(1.00875)^4t Ok, but my question is this: Why isn't the equation
  73. More Algebra 2

    It would be great if, again, someone would check these answers for accuracy. I'd like to know if I'm doing them right. 1) What equation defines an exponential decay function? a) y=x^pi b) y=pi^-x c) y=(1/pi)^-x d) y=pi times x I think the answer is c. 2)
  74. Algebra

    Write the equation of the line containing the given point and parallel to the given line. The equation of the line is y= Express your answer in the form y=mx+b. (7,8); x+7y=6 Express your answer in the form y=mx+b. (8,9); 5x+y=9 Express your answer in the
  75. Quadratic equations Trig

    I am having a hard time figuring this out. I know I need to find the vertex from the vertex form equation but I am having a hard time figuring out the equation. A caterer will charge a certain club $20 per member to cater a dinner if 150 members attend.
  76. math - algebra

    f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output
  77. math - algebra

    f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output
  78. math - algebra

    f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output
  79. Calculus--Pythagorean Theorem

    Use the Pythaogorean Theorem to determine the exact length of AB. Express the answer as A) an exact value in simplest mixed radical form B) A decimal to the nearest hundredth The picture is right here, I uploaded it of the diagram. h t t p : //imageshack .
  80. Math

    Let f(t) be an exponential function with f(0) = 11 and f(4) = 59. Use the form f(t) = Pa^t to find an equation for this exponential function? What is the Value of P and A? Thanks!
  81. Algebra

    Can someone verify if my answers are correct? Solve. 1/x+6-1/x-6 My answer is: -12/x^2-36 Solve. 1/x+5+2=5/x+5 My answer is: -3 Subtract. Express your answer in simplest form. 13x/30-4x/15 My answer is: x/6 Can someone verify if my answers are correct?
  82. Math help

    Help with any of these would be greatly appreciated! THANK YOU! 1. How would i solve 3x^2 - 4 = 0? And in simplest radical form? 2. How would i determine the values of 'k' if the graph y=2x^2-2x+3k intersects the x-axis at two distinct points? 3. The path
  83. 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
  84. Math

    How do you write the square root of 3 in exponential form? or any other radical into exponential form
  85. Algebra

    Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expression. ln ã(x+4)=1 What is the exact solution? Select the correct choice below and, if necessary, fill in the answer box to
  86. pre-calculus-check over work

    1). change to exponential form: log2^256=8; 2^8=256 log0.0001=-4; 10^-4=0.0001 2). change to logarithmic form: 5^3=125; log5^125=3 4^-3=1/64; log4^1/64=-3 3). solve the equation: 3^(x-2)=27^(x+1) 3^(x-2)=(3^3)^(x+1) 3^(x-2)=3^(3x+3) x-2=3x+3 -5=2x -5/2=x
  87. Math

    1. Use point-slope form to write the equation of a line that has a slope of 2/3 and passed through (-3,-1). Write your final equation in slope-intercept form. Is the answer y=2/3+-1 2. Write an equation of the line that passed through (2,-1) and is
  88. math

    I must simplify this equation and am having a hard time (5+2a+3a)-(a2+a-6) I also would like to know if you could help me with this onex(4x2+3x-5)-2(4-x2) this is also simplifing. I have a really hard time with these, thank you
  89. Logs.

    Can you please help me with the following log. problems? thanxs! Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution. 7^x = 6^(x + 7) this is how far I got: x log 7/x log 7=
  90. college algebra

    Solve the exponential equation using logarithms. Give the answer in decimal form, rounding to four decimal places. (Enter your answers as a comma-separated list.) 4^(x − 3) = 3^(2x) x = _____
  91. math

    the population of a southern city follows the exponential law. If the population doubled in size over an 18 month period and the current population in 10000, what will be the population 2 years from now? the equation for the exponential equation is: A=ao e
  92. Algebra

    Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that models the
  93. algebra

    ------Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that
  94. college algebra

    Solve the exponential equation using logarithms. Give the answer in decimal form, rounding to four decimal places. (Enter your answers as a comma-separated list.) 4x − 3 = 32x x = _____
  95. Algebra

    The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did
  96. Math

    The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did
  97. Algebra

    The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did
  98. MATH

    solve 1-(2/x)=2/(x+2) Express your answer in simplest radical form. What is radical form ne how? 1-(2/x)=2/(x+2) Multiply both sides by x(x+2): x(x+2) - 2(x+2) = 2x Note that we cannot allow x to be 0 or minus two because for these values the original
  99. Math

    Can someone please help me with this question. Thank you! The information in the table represents the temperature of a cup of hot chocolate in relations to time. Time(t) Temperature(T) 0 60 5 54 10 48 15 44 20 41 Use the exponential regression function in
  100. Pre-Calculus

    The Richtr scale was evied y Cahrles F.Richter a American geologist. The scale is based on the equation M(x)=logx/x0(little 0), where x is the seismographic reading of the earthquake and x0 i 1 miron 0.001mm (the seismographic reading of a zero-level