# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 83
1. ## Honors Chemistry

An aqueous solution of NaCl has a concentration of .500 M. 35.0 mL of this solution is allowed to evaporate to a volume of 20.0 mL. a) Is the solution more concentrated or more dilute afterwards? b) What is the new concentration of the solution?

asked by Lou on May 4, 2012
2. ## chemistry

the density of a certain aqueous solution is 1.17g/ml, and the solution is 3.57% by mass NaOH. how many mL of this solution would you need to use in order to prepare 100.0 mL of .150 M NaOH solution?

asked by zahra on September 6, 2010
3. ## Chem

An aqueous KNO3 solution is made using 82.7 grams of KNO3, diluted to a total solution volume of 1.50 L. The density of this solution is 1.05 g/mL. What is the molality of this solution?

asked by Ryan on May 2, 2011
4. ## chemistry

A 150.0-mL sample of Solution A is diluted to a total volume of 423 mL to form Solution B. If the concentration of Solution A was originally 20.0 mg/L, what is the concentration (in mg/L) of Solution B?

asked by alex on September 18, 2011
5. ## Intermediate Algebra

Combine like terms: -3x^2+2x-4x^2-9+6x-2x^2+8 Solve for x: 8x-11= -11x+18 Solve for x: -2(x-5)+7=z-8-5x Solve for x: (x-2)/5 - 3/2= (x+1)/10 Translate to an algebra statement; do not solve: Seven times the difference of six and a twice a number yields the

asked by Dawn on September 29, 2007
6. ## Physics

12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the wagon if it accelerates from rest to a speed of 2.2 m/s over a distance of 3.4 m? Is this question a typo? Am I supposed to solve for force or work? Physics -

asked by silverback - sorry Repost for Damon on January 12, 2016
7. ## English

Why does the author of "Always to Remember" discuss Maya Ying Lin's background? A. to show that she experienced hardships B. to show its influence on her design C. to appeal to Chinese-American readers D. to show her disinterest in architecture

asked by Anonymous on October 26, 2018
8. ## English

Why does the author of “Always to Remember” discuss Maya Ying Lin’s background? A. to show that she experienced hardships B. to appeal to Chinese-American readers C. to show its influence on her design D. to show her disinterest in architecture

asked by Anonymous on October 29, 2018
9. ## A Math Equation...Plz Help...

|2x + 4| is always larger than or equal to zero. This means that the left hand side of the equation is always 6 or less, so there are no solutions. 6 - 3|2x + 4| = 12 So I just put NO Soution? No solutions, or if you have to write down the solution in the

asked by Count Iblis on December 2, 2006
10. ## Computer Science

A public transport company provides three types of transports to its passengers to travel from city A to city B of different state. The three types of transports are train, bus and taxi. Each transport has different charges and maximum seats limit. The

asked by Tiffany on June 13, 2015
11. ## Chemistry

A pH = 7.6 buffer is needed in the lab. This buffer is made by first dissolving 17.42 g K2HPO4 in 600 mL of water. What is the pH of this salt solution? This solution of course will be too basic becuase we only have the base of the buffer present. What

asked by Carl on March 12, 2015
12. ## Geography and Society

What is the Geographic Coordinate System? a. a precise measure of where a location falls in terms of longitude and latitude using units such as minutes and seconds b. a system through which countries organize airline travel c. a system that uses degrees of

asked by Kaai97 on February 16, 2016
13. ## Algebra

The design team for a cloth manufacturer is sending a system of equations for another team to produce a cloth to make a diagonal print for a dress. Describe what type of system you think this might be. Give your answer as a system that is solved

asked by Payton on June 22, 2016
14. ## Math

Did I do this problem correctly? Solve the following system by first handling the equation of the two lines: x=(0, 2) y=(-2, 1) x=(0, -1) y=(-3, -2) Equation 1: y= -x1 Equation 2: y=4x/3+2T Is this the correct answer?

asked by B.B. on September 18, 2009
15. ## Physics

Two lumps of clay having equal masses and speeds, but traveling in opposite directions, collide and stick together. Which of the following statements about this system of lumps must be true? A. The momentum of the system is conserved during the collision.

asked by Joe on March 5, 2011
16. ## accounting

An organization that does not require precise measurements of the use of services probably would allocate its service center costs by: A. using some form of the step method. B. applying the direct method. C. each revenue center's ability to absorb the

asked by Mag on March 17, 2013
17. ## Agility training

Please check my answer thanks :) Why is time-plus-faults scoring used for a Steeplechase event? A. It's the only method that penalizes for mistakes. B. Both emphasize the speed of the dogs. C. The other two scoring methods are for Standard Classes only. D.

asked by Mallie on January 13, 2009
18. ## intro to business

No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution to handling a crisis of epic proportion?

asked by rose on May 21, 2010

No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution for handling a crisis of epic proportion?

asked by Anonymous on May 6, 2011
20. ## Math

I do not understand how to figure out my problem below and can not find an example in my book. Can someone give me a suggestion on how I can arrive at my answer. Problem: Write a system of inequalities whose solution set is the region shown. graph

asked by Jon on April 18, 2008
21. ## Chemistry

Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0012% Pb by mass. How much of the water in milliliters contains 145 mg of Pb? (Assume that the density of the solution is 1.0g/mL.)

asked by Kelsey G on November 30, 2010
22. ## business 115

No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution to handling a crisis of epic proportion?

asked by Clyde on July 12, 2010
23. ## entrepreneur

No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution to handling a crisis of epic proportion?

asked by bryson on September 4, 2011
24. ## Chemistry

In a chromatography experiment, a solution was prepared by mixing 12.98 mg of isopropanol plus 10.00 mL of an unknown containing some acetone, and diluting to 25.00 mL. Signal of 5.97 and 6.38 were observed for the acetone and isopropanol, respectively. In

asked by Ken on December 13, 2011
25. ## math

List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed

asked by melvin on January 25, 2011
26. ## biology

There is a beaker with 0.4% sucrose solution and the solute potential is -4. Inside the beaker, there is a dialysis bag with 01% sucrose solution, solute potential -1 and pressure potential 0. When the beaker is open to the atmosphere, what is the pressure

asked by izzy on March 8, 2009
27. ## math

I have two questions: The temperature changed from 7ºF at 6 P.M. to -5ºF at midnight. What was the difference between the high and low temperatures? What was the average change in temperature per hour? The difference between the temperatures is 12ºF

asked by anon on August 12, 2015
28. ## Quadratic Equations

I couldn't find the sets of factors that add up to -13 in this problem. Plz help, anything is greatly appreciated! x^2-13x+36 Thx for helping ppl! you could use the quad. eqn which is -b plus or munus sq root of b squared minus 4 ac all over 2 a That is a

asked by Emily on February 12, 2007
29. ## Language Arts

1)In all together now, Barbara Jordan's main purpose is to a)persuade readers that a tolerant society is best created by working on a small scale.*** b)inform readers of the civil rights movement in the United States. c)praise the work of the leaders of

asked by Carly Johanson Miller on December 20, 2015
30. ## chemistry help asap

Please check these thanks. 1. In a titration, 33.21 mL 0.3020M rubidium hydroxide solution is required to exactly neutralize 20.00 mL hydrofluroic acid solution. What is the molarity of the hydrofluroic acid solution? Answer: 0.502HF 2. A 35.00 mL-sample

asked by missy on February 6, 2012
31. ## chem

. (a) A solution was prepared by dissolving 1.4295 g of magnesium chloride (MgCl2) into water and made up to 25.0 mL, calculate the molar concentration of the solution. (3 marks) (b) A 250.0 mL of 0.50 M solution of sodium phosphate (Na3PO4) solution was

asked by lightning on October 13, 2016
32. ## Algebra

This will be a multiple post thing so please bear with me. If my answers are wrong then please explain I'll post my work as needed thanks. 1)Identify the y-intercept and the axis of symemetry for the graph of f(x)=-3x^2+6x+12. answer=12:x=1 2)Determine

asked by Marissa on August 12, 2007
33. ## MTH233/statistics UOP

Find one quantitative and one qualitative data set from a reliable source and determine the best way to present that data graphically. Show your graph and explain your reasoning for choosing this presentation method. When might the reported median of data

asked by sue on July 22, 2010
34. ## Math

Please show your work thanks for your help. Eric works in a factory where he earns \$9.24 an hour. He receives time and a half for over time and double time for work on Sunday. He worked 52 hours this week , with eight hours of overtime and four hours on

asked by Anonymous on November 9, 2007
35. ## Math

Hi! If someone can help me with these, that would be great! Thanks! Directions: Solve each equation. 1.) 2cosx+sqrt2=0 Location on Unit Circle: Period: General Solution: 2.) 3cot^2x-1=0 Location on Unit Circle: Period: General Solution:

asked by Tammi on January 23, 2015
36. ## Algebra 2

Jim's weekly pay is 2/3 of ALicia's. Together they earn \$600 per week. What is each person's pay? Can you leave me an equation on how to solve this? Let Alicia's pay be Y. Then Jim's pay is (2/3)Y. ======================================= Y + (2/3)Y = 600.

asked by Daniel on August 23, 2006
37. ## AP Chemistry

Hey guys! I have answers, but am confused. Please and thanks for any help! A) Which of the following is false? 1.A spontaneous change occurs by itself without assistance. 2.The greater the statistical probability of a state, the greater is its entropy. 3.A

asked by Allie on November 9, 2015
38. ## Calculus

Find the volume of the solid obtained by rotating the region bounded by y=x^2, y=sqrt(x), about y=1. I have to use either the disk or washer method and i believe i use washer. i set up the integral to be pi[(1-x^3)^2 -(1-sqrt(x))^2] from 0 to 1 for my

asked by Jedidiah on October 9, 2015
39. ## Chemistry

A .682 g sample of an unknown weak monoprotic acid, HA, was dissolved in sufficient water to make 50mL of solution and was titrated with a .135 M NaOH solution. After the addition of 10.6mL of base, a pH of 5.65 was recorded. The equivalence point was

asked by Sara on May 10, 2007
40. ## Statistics

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 624 babies were born, and 312 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born.

asked by Stephanie on February 12, 2014
41. ## Chemistry

An aqueous solution contains 2.0 % NaCl by mass. (1) Calculate the molality (NOT molarity!) of the solution. (2) Calculate the mole fraction of the solution. I know how to solve both but the problem is missing one other compound/element. I know that

asked by . on January 26, 2010
42. ## AP Algebra

A man's average speed is 4.86 miles per hour. Express this in cm/sec .*dimensional analysis* .. the teacher answer is "217.32 cm/sec" however mine came out to be "217.26" My work: (4.86m/hr)(5280ft/1m)(12in/1ft)(2.54cm/1in)(1hr/3600sec) = 217.26cm/sec Why

asked by Karen on September 1, 2015
43. ## problem solving

One small and one large animal puzzle kit cost \$16 altogether. If the large kit costs three times as much as the small kit, how much does each kit cost? 4 and 12 A= large animalpuzzle kit. a= small animal puzzle kit. A + a = 16 A = 3a =================

asked by Oshia on January 31, 2007
44. ## Math

The largest multi-story building built by the Anasazi Indians called the Pueblo Bonito. The shape of its foundation is nearly parabolic, with a base (at the top of the photo) of about 500 feet and a height of about 300 feet. 1. Sketch the multistory

asked by Mike on November 14, 2012
45. ## math

Nancy Tai has recently opened a revolving charge account with MasterCard. Her credit limit is \$1000, but she has not charged that much since opening the account. Nancy hasn't had the time to review her monthly statements as promptly as she should, but over

asked by sherry on October 24, 2006
46. ## pre-calculus

solve the the following inequality. write your solution in interval notation. x^3-49x

asked by ladybug on September 29, 2012
47. ## Math

Which of the following ordered pairs is a solution of the equation y = -4x². Can someone help me solve it. Could you guys also explain why that answer is. Here are the options/Answers: (-2,16) (1, -8) (0,-4) (2,-16

asked by -_- on March 26, 2019
48. ## algebra2

Plz Explain how to use a graphing calculator to solve the equation: x(x^2+2)=15. Then state the solution rounded to 2 decimal places.

asked by britteny on January 11, 2007
49. ## math

I need help finding x for this equation e^x (x^2 + 4x + 2)=0 thanks. e^x = 0 or x^2 + 4x + 2 = 0 the first has no real solution (actually x would have to an infinitely large negative number) The second is a quadratic, use the formula to solve it.

asked by eric c. on May 9, 2007
50. ## 12th grade - Math

Explain. 1.) To solve x(x-5)=0 either factor may be equal to zero. 2.) | 8-15i | = 17 3.) The solution for x^2 = -2 cannot be found graphically. [any help or explanation is greatly appreciated]

asked by Liz on August 26, 2010
51. ## Maths

Solve |a|-3/4=-5/8 a. 1/8 or -1/8 b. 7/8 or -7/8 c. 1 3/8 or -1 3/8 d. No solution could someone walk me through perhaps? I missed a ton of class and there's nothing about this stuff in the review notes my teacher gave me.

asked by Fae on October 9, 2015
52. ## Math

Hello! Can someone help me with this? Directions: Solve the equation sin^2x-sinx=2 Location on Unit Ciricle: Period: General Solution:

asked by Paige on January 26, 2015
53. ## Chemistry

What mass of Uranium (in mg) is contained in 1ml of 4.55M (UO2)3(PO4)3 solution? How do I solve this? *all numbers are subscripts

asked by Michelle on November 18, 2012
54. ## Algebra 1-HELP!

factor trinomial completely of the type ax^2+bx+c. -9+18x^2+21x I am not able to solve the solution since the steps are quite confusing any help is great

asked by Claritza on March 30, 2016
55. ## Algebra/very confused

Solve the equation by finding the exact solution. I don't know if I am putting this right 3 In e = check mark over 7 and x -3 In6 Thank you it is appreciated.

asked by Mary Ann on June 2, 2014
56. ## Algebra 1

factor trinomial completely of the type ax^2+bx+c. -9+18x^2+21x I am not able to solve the solution since the steps are quite confusing any help is great.

asked by Claritza on March 30, 2016
57. ## Please Check Other Half (Public Speaking)

6. (TCO9) If you wanted to show the way a university budget was distributed, which type of visual aid would work best? B a pie graph a chart a line graph a drawing 7. (TCO9) How does a speaker benefit from using a visual aid? C Visual aids distract

asked by Bryan on February 7, 2010
58. ## trig

it says solve for all real solutions, compute inverse functions to 4 sigfigs. cos^2x=3-5cosx Devon, what grade level are these questions from? I am having the same problems as with your 9:14 post. Please see my partial solution in the post to bobpursely at

asked by Devon on April 16, 2007
59. ## CHEMISTRY

A solution of H2SO4(aq) with a molal concentration of 1.94m has a density of 1.119g/mL. What is the molar concentration of this solution? I got an answer of 2.17 M and it is incorrect..please help. My work: So Molar concentration = molal concentration *

asked by Akle on February 18, 2012
60. ## chemistry

25.0 ml of 15% NH4NO3 solution is diluted to 300.0 ml. What is the concentration of the diluted solution? My Work: Total molar mass of NH4CO3 = 80.052 .15 x 80.052= 12.0078 25.0 ml (12.00 M) = 300.0 ml (c2) 300.19/300.0ml = The concentration is = 1.0M

asked by Anonymous on April 15, 2015
61. ## pre-algebra

can you please show me the steps for this word problem? in need to write the inequality and solve. how long will Kenzie drive if she averages 55mph and wants to complete at least 440 mi. of her trip?

asked by mikey on October 19, 2017
62. ## Physics

The total U.S. consumption of electricity in a particular year was 5.0 x 10^12 kilowatt-hours. What is the mass equivalence of this amount of energy? Show all calculations leading to an answer. How would I solve it?

asked by Alea on April 8, 2016
63. ## chemistry

(100g)(.473J/g°C)(x-62°C) =-(500g)(4.184J/g°C)(x-22°C) Q = mass•specific heat•change in temperature Can someone show me how to solve this so i can teach myself before my test on Monday ..thanks for your time

asked by don on February 3, 2012
64. ## math

How long (in years) will it take your money to triple at an annual percentage rate of 5% compounded annually? Use logarithms to solve. Round and show 2 decimal places.

asked by laurin on November 2, 2012
65. ## pre-algebra

Solve, show the algebraic you use. Tammy has the following scores on her business law tests 92, 99, 84, 91. What score must she earn on her fifth test in order to have an A average? An A for her university starts at 90.

asked by cody on June 24, 2011
66. ## physics

A rock is thrown straight upward with an initial velocity of 9.6 m/s in a location where the acceleration due to gravity has a magnitude of 9.81 m/s^2. To what height does it rise? i got 4.7 can you please show me how to solve for this last one

asked by y912f on February 17, 2009
67. ## Adding and Subtracting Rational Expressions

Can someone PLEASE show me how to solve these?I never could understand these types of equetions.(3x/10)+(9x/10) (n-2/n+4)+(8/[n+4]) (5m+8/[m-1]) - (m-3/[m-1]) (x^2/[x-1]) - (1/[x-1]) (4x+y/[2x+3y])-(2x -2y/[2x+3y]) (x^2+3x+2/[x^2-16] + (3x++6/[x^2-16])

asked by Mike on May 29, 2007
68. ## Algebra

Solve the system by graphing. 3x+y=6 3x-y=0 This is how far I got: (First line): y=-3x+6 (Second line): y=3x I'm not sure how to graph the second line. Is the y-intercept (0,0) and the two lines meet at (1,3)?

asked by Bee on August 24, 2007
69. ## Physics

Nicole is late for work. She jumps in her car and drives to work in 3.5 minutes. Her work place is 3.85 km away from her house. The speed limit between home and work is 50 km/hour. Is Nicole speeding?

asked by Tom on March 10, 2016
70. ## Math

I just don't understand this question: h(t)=A*b^x h(3)=4 h(5)=40 Solve for b Would you plug 3 into the x and set it equal to 4? (4=A*b^3) How would you solve for that because in the next question they go on to ask you to solve for A using the b you

asked by Nicole on August 30, 2006
71. ## Calculus

Find the volume of the solid obtained by revolving the region x=(y-2)^2, the x-axis, the y-axis, about the x-axis. So I understand that you're supposed to use disc method; however, idk where I evaluated wrong. My final answer is 136π/3, but according to

asked by Mike on December 17, 2018
72. ## Linear Algebra

Solve the following system using Gauss's algorithm (a) x1 + 2x2 + 4x3 + 6x4 = 3 2x1 + x2 + 3x3 = -6 -2x1 + x2 + 6x3 + 4x4 = -11 2x1 + x2 + x3 = 0 so the matrix will be: 1 2 4 6 3 2 1 3 0 -6 -2 1 6 4 -11 2 1 1 0 0

asked by Robert on September 21, 2012
73. ## chemistry

Find the molar masses of the following compounds: 1. LiI 2. PbCO4 3. Mg(OH)2 4. (NH4)3PO4 Find the percent composition (percent by mass) of the given element in the following compounds: 1. Fluorine in AgF 2. Hydrogen in glucose (C6H12O6) 3. Oxygen in

asked by Alex on March 2, 2015
74. ## Chemistry

As a technician in a large pharmaceutical research firm, you need to produce 100.mL of 1.00 M a phosphate buffer solution of pH = 7.45. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as

asked by Billy Bob Reynolds on March 31, 2014
75. ## Chemistry

As a technician in a large pharmaceutical research firm, you need to produce 400. mL of 1.00 M potassium phosphate solution of pH = 7.18. The pKa of H2PO4- is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as

asked by Anonymous on February 28, 2011
76. ## CHEMISTRY

A buffer was prepared by dissolving 0.40 mol of benzoic acid (Ka=6.3*10^-5) and 0.50 mol of sodium benzoate in sufficient pure water to form a 1.00 L solution. To this solution was added 30.00 mL of 2.00 M HCl solution. What was the pH of the new solution?

asked by Sally on April 3, 2018
77. ## CHEMISTRY

As a technician in a large pharmaceutical research firm, you need to produce 450. mL of 1.00 M a phosphate buffer solution of pH = 7.20. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as

asked by jess on September 18, 2016
78. ## chemistry

As a technician in a large pharmaceutical research firm, you need to produce 200 mL of 1.00 M a phosphate buffer solution of pH = 7.06. The pKa of H_2PO_4}^- is 7.21. You have 2.00 L of 1.00 M KH_2PO_4 solution and 1.50 L of 1.00 M K_2HPO_4 solution, as

asked by teja on May 11, 2012
79. ## chemistry

As a technician in a large pharmaceutical research firm, you need to produce 200.mL of 1.00 M a phosphate buffer solution of pH = 7.19. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as

asked by moses on September 14, 2013
80. ## Physics

Mission Impossible: Special agent Ethan Hunt tries to escape an assassin by jumping horizontally off a flat roof. His goal is to reach a window, two stories or 5.15 m down, on the building across the alley. Ignore air resistance. If the alley is 11.9 m

asked by Anonymous on February 18, 2014
81. ## Chemistry

What Occurs as a salt dissolves in water? the number of ions in the solution increases and the freezing point decrease the number of the ions in the solution increase and the freezing point increase the # of ions in the solution decrease and the freezing

asked by Kat on March 26, 2007

Please help. I have no idea how to do these 4 homework problems. 1- How many milliliters of 0.140 M HCl are needed to completely neutralize 42.0mL of 0.106 M Ba(OH)2 solution? 2-How many milliliters of 0.123 M H2SO4 are needed to neutralize 0.250 g of NaOH

asked by Robert on February 22, 2010
83. ## Physics

A scientist has devised a new method of isolating individual particles. He claims that his method enables him to detect simultaneously the position of a particle along an axis with a standard deviation of 0.12 nm and its momentum component along the axis

asked by Brian on August 16, 2010
84. ## Chemistry

Can someone please check my work? Calculate the mass of (NH4)2S2O8 needed to prepare 250mL of a 0.100M solution. I got 5.705 g. Calculate the volume of 2.00M KI needed to prepare 250mL of a 0.200M solution. I got 0.025L or 25mL. Calculate the volume of

asked by Rachel on January 22, 2011
85. ## Inter. Algebra

Another problem plz help Count Iblis. How do you solve 5/x+2 + 2x/x squared - 4= 3/x-2? 5/x+2 + 2x/x squared - 4= 3/x-2 You write the term: 2x/x squared as 2/x the equation becomes: 5/x+2 + 2/x - 4= 3/x-2 4/x = 0 This equation has no solutions. It is only

asked by Andrea on December 2, 2006
86. ## Math

Hi. Im trying to figure out how to solve an equation for x. The equation is y=2(x-3)^2. If I were to work this out, I would have come up with the answer x=sqrt y/2 +3 but the answer is actually x=sqrt 2y/2 +3. I can't work out where the extra 2 has come

asked by oscar on November 20, 2009
87. ## Math

Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x

asked by Winston on February 2, 2017
88. ## Math

Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x

asked by Winston on February 1, 2017
89. ## math

I don't know where to start.The questions says: Give an inequality that has the given solution: a) -2 < or = X < or = 7 Am I supposed to substitute something? Or just guess an equation that might work?

asked by Anonymous on March 8, 2017
90. ## Calculus

Find the solution of the logarithmic equation: ln(x+8)+ln(x–8)=0 Im not sure how to approach this one. I tried moving the ln(x-8) to the other side and solving for x and that did not work. I also tried putting everything as an exponent to e. please help!

asked by Adam on October 29, 2010
91. ## algebra

3x + 4 > 9, with x = 2 determine whether or not the solution provided is a solution to the inequality. If the value he or she provides is a solution, provide a value that is not a solution. If the value is not a solution, provide a value that is a

asked by Sam on February 14, 2011
92. ## Chem Help!

I really need help for my homework on balancing equations please show all the work including the coeffients if needed. I need help with 3 questions, 1) NaN3 -> Na + N2 2) NO2 + O2 -> NO + 03 3) LiOH + CO2 -> Li2CO3 + H2O

asked by Tania on March 15, 2008
93. ## physics

A hippo has a mass of 6000kg. When standing on 4 feet, how much pressure is exerted on the ground? Assume each foot has an area of 0.10 square meter. Show your work.

asked by Charlie on February 6, 2017
94. ## Physics

Use the Work-Energy Theorem to show that an object with initial velocity vo will travel a distance d across a rough horizontal surface before stopping, where d = vo2/(2mKg).

asked by Anonymous on October 19, 2016
95. ## Cell Biology

How many molecules of ATP will be synthesized by the complete oxidation of one molecule of fructose 1, 6-bisphosphate to carbon dioxide and water by a liver cell? Show your work.

asked by Teddy on November 19, 2012
96. ## Trig?Precalc

write the rectangular equation x^2+y^2=6 in polar form. I do not want people to just post the answer! Please, show your work so that I can understand how to do these kinds of problems myself! Thank you and God Bless!

asked by tabby on April 19, 2012
97. ## Pre calc

Please help me proof the identity. This isn't even math to me, I can not understand it so please show all work. God bless A)1-cos2x/sin2x=tanx B) sin4x/sinx=4cosxcos2x

asked by Rachel on April 13, 2017
98. ## physics

A hippo has a mass of 6000kg. When standing on 4 feet, how much pressure is exerted on the ground? Assume each foot has an area of 0.10 square meter. Show your work.

asked by Anonymous on February 6, 2017
99. ## College Math

Brent invested \$5607 in an account at 2% compounded weekly. Calculate the total investment after 7 years. Please show me the steps. I tried using this formula but it did not work. A=P(1+r/n)^6x1

asked by Pat on December 16, 2014
100. ## physics

A hippo has a mass of 6000kg. When standing on 4 feet, how much pressure is exerted on the ground? Assume each foot has an area of 0.10 square meter. Show your work.

asked by Brett on February 6, 2017