# For the equation 3^x - 3^-x = 1 solve for x by writing your final answer in logarithmic form

123,284 results
1. ## math

(1)Is the Equation true, false, or open? 4y + 8 = 6y + 3 A. True; the expressionas are the same for all values of variables B. False; the expressions are never the same ****** C. Open; there is a varible (12)Which equation is an Identity A. 7 - (9x + 3) =

2. ## algebra

(1) Is the equation true false or open? 9p + 8 = 10p + 7 A. open;there is a variable ***** B. true;the expressions are all the same for all values of the variiables C. false;the expressions are never the same (12) Which equation is an identity? A. 11 - (2v

3. ## PHYSICS

A 2.00 METER TALL BASKETBALL PLAYER ATTEMPTS A GOAL 10.00 METERS FROM THE BASKET(3.05 METERS HIGH). IF HE SHOOTS THE BALL AT A 45.0 DEGREE ANGLE, AT WHAT INITIAL SPEED MUST HE THROW THE BALL SO THAT IS GOES THROUGH THE HOOP WITHOUT STRIKING THE BACKBOARD?

4. ## Math

1. Which ordered pair is a solution of the equation y = −11x + 4? a. (0, -7) b. (-1, -7) c. (1, -7) d. (2, 26) MY ANSWER: C Because (X,Y) so -11x = -11 * 1 = -11 -11 + 4 = -7 2. A plumber charges \$65 per hour to fix a leak. What is an equation that

5. ## Math

1. Solve the equation. -6g = 42 a. g = 7 b. g = -7 c. g = 252 d. g = -252 2. Solve the equation. x/8 = 16 a. x = 128 b. x = 24 c. x = 8 d. x = 2 3. Solve the equation. 12m = 14.4 a. m = 120 b. m = 12 c. m = 1.2 d. m = 0.12 4. Solve the equation. x/3 = -15

6. ## Penn Foster Writing Assignment Writing Skills

I am trying to complete a 750 to 1000 word essay but I completely have no clue what to write about and my writing skills is a bit lacking. I am not looking for someone to write this for me, someone who can guide me to complete this. This is the final paper

7. ## Math

The temperature at sunrise is 65F. Each hour during the day, the temperature rises 5F. Write an equation that models the temperature y, in degrees Fahrenheit, after x hours during the day. I need help writing the equation, I don't want the answer to the

8. ## math

Write a real world problem that you can solve by writing an equation . The answer to the problem must be 6

9. ## Math

Tiny scored 94, 68 and 88 on her first 3 Algebra 1 tests. Her next test is her final which counts as double. Write and solve an equation that Tina could use to determine the minimum grade she must score on her final to have a mean score of 80.

10. ## chemistry

Write the equation for the dissolution of AgCL(s) in H20(I).Express your answer as a chemical equation. Identify all of the phases in your answer. I tried writing it as AgCl Ag+ + Cl- but this is incorrect.

11. ## ALGEBRA 1!PLZ HELP!

Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve the first equation for y. y = 2x-5 Substitute that for y in the second equation and solve for x. Then use the value of x to substitute back into the first equation

12. ## Algebra II

Please check answers: Use the equation of the exponential function whose graph passes through the points (0,-2) and (2,-50) to find the value of y when x= -2. My answer: -2/25 Solve 64^x/=5/2 Thanks.

13. ## math

(1) Is the equation true false or open? 9p + 8 = 10p + 7 A. open;there is a variable ***** B. true;the expressions are all the same for all values of the variiables C. false;the expressions are never the same (12) Which equation is an identity? A. 11 - (2v

14. ## Physics

1) A toy car with a mass of 2.35 kg is pushed with a force of 21.6 N. What is the acceleration of the car? a) Given Information: Write the given information in the problem. If any units need to be converted, make that conversion as a part of your given. b)

15. ## 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

16. ## Math

The final exam will count as two tests. Brooke has test scores of 80, 83, 71,61 and 95. What score does Brooke need on the final in order to have an 80? I thought 80+83+71+61+95 = 390 / 5 = 78 then I don't know what to do next. Although I did do 78 +2x =

17. ## math

What is the first step in solving the linear system {2x − 3y = 11 {−x + 5y = −9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve

19. ## Physics

A ball is launched with a velocity of 10 m/s at an angle of 50.0 degrees to the horizontal. The launch point is at the base of a ramp of horizontal length 6.00 m and 3.60 m high. A plateau is located at the top of the ramp. a) Does the ball land on the

20. ## math

Use the rules of equations and inverse operations to solve the equation. In your final answer, include all of your work. x 3 - 3 = -67

21. ## Math

Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x -4y =8 x=4, y=1 for 6x - 2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value for x in the other

22. ## Substitution Method-Plz help

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How did you get that?What

Please help me by checking the following answers for me. 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x-6)=12, I square both sides, so

24. ## Algebra 2 (check)

I have some problems that I've answered and I need someone to check to see if I'm right. Im just posting the questons and my answer,if its wrong I'll post my work,so here it is bear with me please and thank you. 1)name which sets of numbers to which -28

25. ## math, correction plz

Can someone correct these for me.PLZ Problem#1 Directions solve equation ãx+4 = 3 My answer: x = 5 Probelm #2 Directions solve equation ã(4x+1) + 3 = 0 My answer x = 2 Problem #3 Directions solve equation ã(2y+7)+4=y My answer y= 1 and y = 9 the

26. ## Writing Skills Writing Assignment

I am trying to complete a 750 to 1000 word essay but I completely have no clue what to write about and my writing skills is a bit lacking. It needs to be about a personal experience. I have more info if needed.This is the final paper result. Your final

27. ## math

What is the first step in solving the linear system {2x−3y=11 {−x+5y=−9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve the

28. ## Algebra

solve x+21/x+3

29. ## Math

Here is the problem. I got the answer but I would like a better understanding. Find the equation of a line that passes thru(6,-2) and is perpendicular to equation x-3y+16. I got the final answer being -3x+16. Can someone please explain how to get this? I

30. ## Algebra 1

What is an equation of a line perpendicular to the line with equation y = 1 - 3x a.y=-3x + 5 b. y=3x + 5 c.y=-1/3x + 5 d. y=1/3x + 5 To solve the linear system below, which substitution of unkowns is proper ? x + 4y= -6 5x - 3y = -16 a. substitute -4y-6

31. ## ALGEBRA

Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms first so, 1x+2 = 14;

32. ## Math

1. Solve the equation -5y-9=(y-1) A. -1/2 B. -2 1/2

33. ## Algebra

Are these answer"s correct? What is the equation for the line that passes through the (-2,2) and has a slope of 5? Answer- Y=5x + 2 Y=5x +12 Y=5x -2 None of these ¨C I believe this is the answer Find the value of x^3+¡¼2x¡½^2-3 when x =3. Answer- 42

34. ## can someone help me with a question of an explanat

my question is for math, I have the problem worked out i just don't remember what the tutor who helped me told me for the explanation of steps i just like to know how they came up with that. Directions: Solve each literal equation for the indicated

35. ## physics

how do I calculate mass of one object in an elastic collision? I have the equation m1v1 initial + m2v2 initial = m1v1 final + m2v2 final How do I rearrange this to solve for m2?

36. ## science

A startled armadillo leaps upward, rising .544 m in eh first .200s a) What is its initial speed as it leaves the ground? b)What is its speed at the height of .544m? c) How much higher does it go? Solve the first part d= vo*t - 1/2 9.8 t^2 you know d, and

37. ## Math

For the equation 3^x - 3^-x = 1 solve for x by writing your final answer in logarithmic form.

38. ## Math

3 times the square root of 3. Would I be right in saying that just writing it with the square root form is right? So here's my equation: (3* sq. rt. of 3) divided by 2. Help? 3/2 sqrt 3 is the accepted way

39. ## Algebra

How do I solve this? The perimeter of a rectangular writing pad is 28 inches. The length is 1 inch less than twice the width. Find the width. Show all work! Translate your English into Math or L = 2W - 1 2L + 2W = 28 2(2W-1) + 2L = 28 I am sure you can

40. ## algebra

Solve the system by graphing. 3x+y=6 3x-y=0 I'm kind of unsure about how to do this. I'm thinking I just put any point in for x and then solve for y...is that right? you could let y=3x then substitute this value of y to the first equation...3x+3x=6 so,

41. ## DRWLS CAN YOU ANSWER

How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 THE ANSWERS ARE3,-2,1 HOW DID THEY GET THAT ANSWER. This can be solved a number of ways. 1) subsitition 2) determinants 3) matricies.

Please help me by checking the following answers for me(There are 3 problems that I need someone to check). 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work

43. ## math

When writing an equation in point-slope format, is it not proper to fully solve for y? For example, here is my problem: Find the point-slope equation for a line containing the point (-7, 2) and the slope m = 3. The answer was this: y – 2 = 3(x + 7) I was

44. ## Alg-Substitution (check plz)

k well i had to use substitution to find the point of intersection for these 2 equations x-y=10 3x+y=11 i chose to substitute y in the first equation my final answer was (-1/2 , 5) can someone clarify this, and if it's wrong, where'd i make a mistake? In

45. ## Physics

I'm stuck on this problem. "You mix 100 ml 60 degree C water with 100ml 20 degree C water. Find the final temperature" Changing 100 ml to .1kg, I set .1*4186*(60-final temp.) + .1*4186*(final temp-20)=0 but my t's cancel out. I know it would work if I set

46. ## Physics

4 kg of lead shot at 91.1o C are poured into 4 kg of water at 29.5o C. Find the final temperature (in oC) of the mixture. Use cwater = 4187 J/kg oC and clead = 128 J/kg oC. Please i need the answer and equation used to solve for the answer Thanks!

47. ## Math

At the mall, Leona bought a T-shirt and a book for a total of \$28. The book cost \$12. How much did the T-shirt cost? What is the unknown information? Let x represent the unknown information. Write an addition equation that models the problem Solve the

48. ## math

how do you write an equation and state what the variable n represnts. 54 -n- =24 If you're writing an equation where you need to state what the variable is, then you need to end up with an equation where n is the only thing on one side of the equal sign.

49. ## physics (elastic collision)

A ball of mass .44 kg and speed of 4.5 m/s collides head-on with a .22 kg ball at rest. Assuming perfect elasticity, what is the speed and direction of each ball afterwards? I know that the momentum is conserved here and since I am solving fo two

50. ## math

missed this in parade magazine, please answer for me man owns cows and chickens that total 30 when the son couned them his answer was 74 legs how many chicken did the farmer own x=cows y=chickens x+y=30 4x+2y =74 please finish for me Solve one equation for

51. ## algebra

1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic equation has roots 7 and -2/3? answer=A A.2x^2-11x-21=0 B.3x^2-19x-14=0 C.3x^2+23x+14=0 D.2x^2+11x-21=0 3)To solve 4x^2-28x+49=25 by using the square root property,you would first rewrite the

52. ## Algebra

I'm having trouble with these problems, I'm not asking for just the answers, I need to know how to solve them, its a practice for my upcoming final, So I need to know how to do them. Name the property of real numbers illustrated. (2√7)*√3=2(√7*√3)

53. ## math

write a real world problem that you can solve by writing an equation.the answer to the problem must be 6.

Write and then solve for y = f(x) the differential equation for the statement: "The rate of change of y with respect to x is inversely proportional to y^4" So dy/dx=k/y^4 (y^4)dy=(k)dx Integrate y^5/5=kx+C Is this the final answer or is there more?

55. ## math

Write a real-world problem that you solve by writing an equation.The answer to the problem must be 6. 4 divided by 24=6

56. ## Trig

Solve the equation on 0° ≤ θ < 360° and express in degrees to two decimal places. sin(2θ) = -0.7843 I've gotten 308.345° (QIV) and 231.655° (QIII). I'm unsure how to get the answer though? The final answer is: 115.83°, 295.83°, 154.17°,

57. ## math

I am helping my child with this. Can you show me how to Solve word problems by writing an equation with a variable to represent the given information and then solve the equatin.

58. ## Algebra

I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x-1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x-8/2x) +5= (x+6/x)

59. ## Chemistry

This is sort of like the one I last posted, only it asks for the final temp. instead of energy... What is the final temp. (in degrees C) after a 15.5 g piece of ice at 0 degrees C is placed into a styrofoam cup with 125.0 g of water initially at 72.0

60. ## Physics

What is the final speed of a car if it starts at 32 m/s and loses 1800J of energy? I think the equation should be: 0.5m(32)^2 - 1800J = 0.5mv^2 where m = mass of the car v = final speed. Since there is only one equation with 2 unknown, I can only solve it

61. ## ks maths

2x - 4y = 12 3x + 2y = 10 whats the answer Do you know how to solve simultaneous equations? Multiply equation (2) by 2, then add eqution 1 to eqution 2. That process gets rid of the y term. Then solve for x. Substitute the value of x into either equation

62. ## MATH

I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is the prob. x+y=5 x-2y=-4 equation 1 x+y=5 equation 2 x-2y=-4 Multiply equation 1 by -1. Add equation 1 to equation 2. The x term cancels. Solve for y. THEN, put the value of y into

63. ## Algebra 2

I had to solve this quadratic equation using the complete the square method. Did I do it correctly? The problem is 3x^2+18x+10= 0 (3x^2+18x+10)/3= 0/3 = x^2+6x+(10/3)=0 x^2+6x+(10/3)-(10/3)=0-(10/3) =x^2+6x= (-10/3( x^2+6x +(6/2)^2= -10/3+(6/2)^2

64. ## algebra 1

Solve the following problem: Kate bought a car for \$20,000. A study shows that a car will depreciate (go DOWN in value) by 15% each year. How much is Kate's car worth after 5 years? a) Formula used: ___________________________________ b) Substitute values:

65. ## math/phys

someone tell me why this answer is wrong...u are given final wavelength of 0.0022 nm, u want to solve for the intial wavelength using the compton scattering equation which is final wl -intial wl= 0.002426(1-cos(theta)) theta is 45 degrees. so initial w.l.

66. ## Algebra 2

Explain how you can tell what kind of conic section a quadratic equation describes without graphing the equation. Can you do this by writing the equation in standard form? (That's what my answer key says... but I don't know how/if it's actually right)

67. ## Chemistry

A 0.500 mol sample of Nitrogen gas has a recorded pressure of 1.22x101 atm while contained in a 1000. mL cylinder. Calculate the temperature, in K, while under these conditions. Solve for the temperature. Final answer shold be in SN while taking SF and

68. ## chemistry

I tried using the answer you provided but the online system I am using is not taking this as a correct answer. This is the answer you provided: AgCl(s) + H2O(l) ==> Ag^+(aq) + Cl^-(aq). PLEASE HELP!! Thanks My original question: Write the equation for the

69. ## Algebra

1. Evaluate. (8 – 3) (12 ÷ 2 • 2) – 20 Answer: I'm not sure if its -5 or 40 2. 6x – 7 = 5(x – 2) Answer: -3 3. Solve for y. 3x – 2y = 12 Answer: 3x-12/2 4. Solve. –3(x – 3) + 8(x – 3) = x – 9 Answer: 1 1/2 or 1.5 5. Find the slope of

70. ## college algebra

writing equation in quadratic form then solve 36/b-17=-24/b+1

71. ## math

Still having problems solving this... 2x(2x + 1)^2 = 312 I started with: 2x(2x+1)(2x+1)-312 = 0 2x(4x^2+4x+1)-312 = 0 8x^3+8x^2+2x -312 = 0 Now what? If you don't have to solve for x, then then you have the final answer! If you have to find x: then you

72. ## Chemistry AP

Calculate the pH of a 0.44 M aqueous solution of NH4Cl. Kb = 1.8 × 10−5 . I've tried used the Ka=Kw/Kb equation then used the resulting 5.5e-10 in Kw=([H+][Cl-])/[NH4Cl] , using that to get the [H+], but it isn't correct and I don't know what else to

73. ## Math

Hello again, today is my final day of the semester and I started late. So I have tons of work to quickly finish and this math test I am taking is 48 questions. Just a brief description why you might see my name a lot. 1. Which is a solution of the equation

74. ## To Kibito

I posted a response to your last two queries and now I can't find your original question nor my answers. Did you get everything taken care of on that H2S problem? My final answer was x = 0.00167 but also talked about how to solve the cubic equation using a

75. ## Chemistry

50.0 mL of a 0.20 mol/L HCl reacts with 60.0 mL of 0.15 mol/L NaOH. What is the pH of the final solution? I tried writing out the equation: HCl + NaOH = Cl + NaH2O Now, I am not sure of NaH2O is the right product or not.. However, I am still confused on

76. ## math

What is the height of the coaster when the velocity is 90 ft/sec? Show all work using the equation editor and label your final solution. Round your final answer to the nearest hundredth, but remember you should NOT round in the middle of the question.

77. ## Algebra

My instructions are to solve the problem by showing the steps and identify as a conditional equation, an inconsistent equation or an identity. 0.06q + 14 = 0.3q - 5.2 You can convert that to 0.24 x = 19.2 and solve it for x. The original equation is

78. ## comp170

write a final paragraph of about 150 words explaining how you can apply five of the writing elements you studied in this course to enhance your academic and professional writing.

79. ## math 12

i got the wrong answer from the back, and i know that imnot dooing it right. please try to help me on this hard question. THE ANSWER WAS:16 solve the equation: 3log(x-15)= (1/4)^x i don't know how to solve it algerbrically. the teacher doesn't want us to

80. ## Algebra

Suppose a market research company finds that at a price (y) of \$30, they would sell x =10 t-shirts. If they lower the price to y = \$20, then more people would purchase the t-shirts, and they can expect to sell x = 30 t-shirts. Find the equation of the line

81. ## Math

You invested \$1000 in a savings account in 6th grade. The account pays 5% annual interest. How much money will be in the account after 6 years? I understand how to set the equation up, but I'm not sure how to get the final answer. This is a question from

82. ## Math

You invested \$1000 in a savings account in 6th grade. The account pays 5% annual interest. How much money will be in the account after 6 years? I understand how to set the equation up, but I'm not sure how to get the final answer. This is a question from

83. ## physics

A 80 kg object slides at a 20 degree plane downward at 5m/s. An object 2 collides with object 1 by falling from 7 meter height and they stick together. Final speed of objects? I know the speeds would be the same. Would momentum equation work to solve this?

84. ## Precalculus

"Sketch the ellipse. Find the coordinates of its vertices and foci. 34. x^2 + 25y^2 - 6x - 100y + 84 = 0 (Hint: Complete the squares in x and y. Begin by writing the equation in this form: (x^2 - 6x + ___) + 25(y^2 - 4y + ___) = -84.)" ==> I used the hint

85. ## TRIGONOMETRY

Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 4.

86. ## math

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken.

87. ## ALGEBRA

Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms first so, 1x+2 = 14;

88. ## College Algebra

"Solve each equation. Round your answers to the nearest ten-thousandth." (These are my directions) Here is the equation: 3^n + 9 = 69 How do I solve this getting the answer asked for?

89. ## trigonometry

1) Solve the equation: 15(7x-6) = 3x-5 My answer is (-85/108) 2) Mary and her brother collect coins. Mary has 4 times the number of coins that her brother has. Together they have 175 coins. How many does Mary have? My answer is 140 3) Perform the indicated

91. ## ALGEBRA

Answer the questions below. Use Equation Editor when writing or solving mathematical expressions or equations. First, save this file to your hard drive by selecting SAVE AS from the File menu. Click the white space below each question to maintain proper

92. ## Algebra

I have a few more questions that I either need help with or just need checking. Is the algebraic expression a polynomial? if it is write the polynomial in standard form, 1. 6x-9+8x^2 I got Yes; 8x^2+6x-9 Perform the indicated operations. Write the

93. ## Algebra II

Please check the following: Solve log4(m-3)+ log4(m+3) =2 Answer: 1 Solve 6^3n=43^5n-4 Answer: 1.1202 Solve 5^2x+1>=50 Answer:x>=4.5000 Use common logarithms to approximate log9(207) to four decimal places. Answer: 2.4270 Ealuate: In e^-9x Answer: -9x

94. ## Algebra

I am trying to find out if my answer's are correct. Can someone please verify. What is the equation for the line that passes through the (-2,2) and has a slope of 5? Answer- Y=5x + 2 Y=5x +12 Y=5x -2 None of these ¨C I believe this is the answer Find the

95. ## Algebra

Please help! I need to factorise and solve this equation, x^2 +x -30 =0 I then need to explain how I would use the answer drom this to solve the equation 4x^2 +4x-120=0

96. ## Math

I have a question.. I have a 90.7% in math right now and I need to bring it up to a 93%. The only thing left is the final exam, which is worth 10% of your grade. Does anyone know a formula or a method that will allow me to calculate what I need on the

97. ## Calculus

With the following coordinates (16,46) (18,64) (20,60) create three formulas using Y+Ax^2+Bx+C then solve for A,B, and C to form the final equation.

98. ## algebra

2. The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite in millions of years? 2) You need to show how you use the

99. ## 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

100. ## Math

I need help with these three problems. They are on a Study Guide and I need some refreshing up of how to do them. 17. Solve the equation using the zero product property... -8n(5n+3) 19. Solve the equation by factoring 5z^2-2z-3=0 20. Solve the equation by