# 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 101

You have 33 dogs and 4 kennels. Divide the dogs up evenly so the same number of dogs is in each kennel. I was told to show work and that I could not count part of a dog. Please help. Thank you.

2. ## physics

A male cheerleader does 2.25 kJ of work in lifting a 57.5 kg cheerleader 1.25 m off the ground during the half time show. The energy gained by the lifted cheerleader is __________ kJ.

asked by HELP ASAP on July 31, 2014
3. ## Chemistery

If you have 1.8 moles of magnesium and 3.2 moles of chlorine, what is the product of the reaction. what is the limiting regent? what is the Theoretical yield in grams and moles? show work?

asked by Zahid on March 24, 2011
4. ## math

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

asked by logi on August 11, 2015
5. ## Math. 10 Points.

The diameter of a tire is 2ft A. Find The Circumference of the tire B.About How Mant Times Will The Tire Have To Rotate To Travel One Mile (SHOW YOUR WORK)

asked by Kolton on February 23, 2017
6. ## algebra

Solve and proof for the value of A. 0.3A+(0.2A-0.5)+0.2(A+2)=1.3 I have done this question over and over I keep getting answers like 2 or3.25 but when I sub in thoes answers for A It does not work.

asked by Kay. on September 12, 2009
7. ## Mathematics

I need to solve this problem in two diferent ways showing work. I have one way but I don't know what the other way could be the problem is 3 3/4 +5 1/3

asked by marcus on August 22, 2009
8. ## Math

Sorry! I don't get this one either.. limit of (f(x+Δx)-f(x)) / Δ x with Δ x -> 0 f(x)= 1/(x+3) My work so far before I got stuck... 1/((x+Δx)+3) = 1/(x+Δx+3) - 1/x+3 = 1(x+3)/(x+Δx+3)(x+3) - 1(x+Δx+3)/(x+3)(x+Δx+3) =Δx / (x+Δx+3)(x+3) I need to

asked by Darly on August 16, 2014
9. ## Calculus

How do I solve for lim h->0 (((a+h)^2 + 1)/(3(a+h)+7) - ((a^2 + 1)/3a + 7)) and then all divided by h? The question was use the limit definition to find the derivative of f(x)= (x^2 + 1)/(3x + 7). I tried solving what I did above, but had no luck. I used

asked by Blake on October 12, 2010
10. ## english

i had to write a paper on the details that show the impact of the problem (effects)on jack, ruth, and the company section 2 the steps needed to change the situation reason to implement each step, inc luding the benefits to your employees, your role in the

asked by ron on October 30, 2009
11. ## Physical Chemistry

Calculate the concentrations of each of the following solutions. (a) the molality of chloride ions in an aqueous solution of iron(III) chloride for which xFeCl3 is 0.0195 (b) the molality of hydroxide ions in a solution prepared from 9.16 g of barium

asked by Trixie on February 15, 2010
12. ## math

1. Find the length of the hypotenuse of a right triangle with legs of 9 cm and 12 cm. (1 point) 8 cm 21 cm 15 cm 225 cm 2. The length of the hypotenuse of a right triangle is 13 cm. The length of one leg is 5 cm. Find the length of the other leg. (1 point)

asked by Beya on October 31, 2018
13. ## Chemistry (Help)

For the chemical reaction, sodium hydroxide + copper (II) chloride = "robin's egg blue" precipitate, do the following: write the balanced molecular, balanced total ionic, and balanced net ionic equations; determine the Limiting Reactant (LR) for each

asked by Anonymous on November 2, 2015
14. ## hca 210

So in a couple weeks I have to do my final project it has to be about : Develop a unique proposal that describes a new health care system. Consider the current U.S. health care system’s strengths, weaknesses, and challenges. Was just wondering if someone

asked by you know me... on June 6, 2010
15. ## Chemistry

A horizontal piston contains 34kg of water that is saturated at 36ºC. Heat is transferred to the water until 80% of the water vaporizes If the piston moves very slowly, calculate the work done by surroundings on the system during this process.

asked by Anonymous on March 27, 2013
16. ## precalcalculus

use the information to solve the triangle. If two solutions exist, find both solutions. How do you work this out? 1.A=36°, B=98°, c=16 2.a=4,b=8,c=10 3.A=35°,b=8,c=12 4.A=25°,b=28,a=18 5.B=130°,c=10.1,b=5.2 6.A=150°,b=4.8,a=9.4

asked by Anonymous on November 27, 2016
17. ## geometry

Algebra BD bisects

asked by Jane on September 14, 2012
18. ## Math; Pre- Algebra

I neede help with how to solve equations with variabls on both sides. Can you give me some examples and work them out step by step?? Please!! :D

asked by Jessica on October 7, 2010
19. ## math

Solve the equation for n n!/(n-2)! = 90 I get n= 10 but when i plug 10 back into the equation i don't get 90 to check... My work: n!/(n-2)! =90 n(n-1)(n-2)/(n-2)! =90 i cancelled the n-2 and expanded the n(n-1) n^2 -1n -90 =0 (n-10)(n+9) = 0

asked by Rose on February 7, 2016

Solve the equation:(x+3)/-3=(x+3)(x-1) Divide both sides by (x+3), multipy both sides by -3. I Will be happy to critique your work. will it be x=-2? no. 1=-3(x-1) 1=-3x+3 -2=-3x x= 2/3 check that.

asked by Margie on June 29, 2007
21. ## SCIENCE 9 URGENT!!

i wrote these questions before but no one helped me so im writing them again 1. a.) name the structures of the male reproductive system that sperm do not travel through. b.) what is the name given to these structures? 2. Name the other body system that the

asked by Sarahh on November 7, 2012
22. ## criminal juctice 230

Prepare a 200- to 300-word response to the following questions: •What is the objective of punishment in the criminal justice system? •How does punishment apply to the overall criminal justice system? •How may punishment assist with achieving

asked by nikki on September 24, 2011
23. ## Physics

Two boys are pulling a box across a horizontal floor as shown in the figure below. vector F 1 = 50.0 N and vector F 2 = 100 N. (a) Find the resultant (or sum) force by the graphical method. (b) Find the resultant (or sum) force by the component method.

asked by Matthew on August 25, 2014
24. ## science

A horizontal spring-mass system has low friction, spring stiffness 210 N/m, and mass 0.6 kg. The system is released with an initial compression of the spring of 11 cm and an initial speed of the mass of 3 m/s. suppose that there is energy dissipation of

asked by hannah on July 16, 2014
25. ## Accounting Theory

Instructions: The Company has one asset. The asset has a three-year life and two possible payoffs each year: 1) \$750 with a probability of 40%, and 2) \$100 with a probability of 60%. The company depreciates assets using the straight-line method. Assume the

asked by Matt on June 30, 2013
26. ## chemistry

a chemist has a supply of cuso4 solution that contains 230 gram per litre of water. she wishes to make a copper sulphate solution that has a solution of 200.0 grams per litre gow ,uch of her copper sulphate solution should she use and how much water should

asked by Cassie on May 18, 2014
27. ## general chemistry II

a solution of a metal ion has a molar absorptivity (E) of 75M^-1 at 450 nm. a 10mL sample of this solution was withdrawn and diluted to 250mL. from this diluted solution, a 5 mL sample was withdrawn and diluted to 100 mL. the absorbance of the final

asked by libby on June 6, 2018
28. ## ALGEBRA

Jim paddles a canoe upstream at a rate o 3mi/hr. Traveling downstream, he travels at 8 mi/hr. What is his rate in still water and what is the rate of the current? PLEASE SHOW THE SOLUTION EQUATION

asked by chris on May 26, 2012
29. ## Physics

A child is hanging at the midpoint of a string and the string form an angle of 15 degrees with horizontal line. What's the force in the string? The answer is 850N. Who can show me the solution???

asked by Greta on September 24, 2012
30. ## math

Solve systems by substitution 5x - 2y = -5 y - 5x = 3 Substitute 5x + 3 for y in the first equation, and solve it for x. Once you have x, use either of the two equations you wrote to solve for y.

asked by Robin on August 8, 2007
31. ## english

1. "Similarly", "on the other hand", and "however" are signals that the author of a source is using which of the following text structures? (1 point) sequencing comparison and contrast cause and effect problem and solution check my work my answer is C

asked by kate on August 14, 2014
32. ## chem

What is the pH of a solution of 120 ml 0.15M acetic acid to which we add 30mL 0.2M NaOH? I have a bit of a hard time with this question. I tried to get mols of each one and then use it in an ice table but didn't work. Can someone help? Thanks

asked by Gulzaman on August 27, 2007
33. ## Pre-Calculus

Solve the equation 2x + 5y - 3z = -1. Write the general solution as a matrix equation. I did some guessing and ended up getting this much: [x]= [-1/2 _ _ ] X [1] [y]= [ 0 1 0 ] X [s] [z]= [ 0 0 1 ] X [t] however I still can't figure out the last two values

asked by Ann on December 6, 2013
34. ## CHEMISTRY

how many grams of glucose, C6H12O6 and water are in 600g of 5.5% by mass glucose solution? please indicate the general formula to use to solve this problem.

asked by Ej on October 11, 2014
35. ## Chemestry

How many grams of glucose would you need to make 500 ml of a 100 mM solution? the atomic weight of glucose is 180. I was not given a way to solve this my my teacher.

asked by Toddria A. Estes on March 15, 2016
36. ## ALGEBRA

Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) 4x2 = 19x + 5 x = x =

37. ## ALGEBRA

Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) 4x2 = 19x + 5 x = x =

38. ## maths

I am trying to understand what to do here.. need help asap!! Thanks! M Solve the following pair of simultaneous linear equations. 3x + 4y =5 2x + 2y =2 Select the option corresponds to the solution. Select one: x = 9 / 7, y = 2 / 7

asked by Marian on February 7, 2011
39. ## Math

asked by Ashley on June 14, 2013
40. ## match check

Solve the following equation. 3(2x-6)=(6(x-3) a)0 b)1 c)all real numbers d)no solution is it a) 0? Write the number without exponents 3.44X10^10 is it 344,000,000

asked by Anonymous on December 16, 2008
41. ## Chemistry

Find the amount of mole solute in solution of concentration 2.5moldm^-3 and volume of 500cm^3 Hint to solve Amount = C x V

asked by George on October 21, 2017
42. ## ATI TEAS 6 practice

Solve the equation below for x. What is the solution set? 5(x-2)^2=125 Answer : x=-3 or x=7 I know I need to do factoring, just forget how to set it up. I also can't figure out where this -20x+20 came from. Thanks for the assistance.

asked by Sunday on March 7, 2017
43. ## alg.

solve and graph 2x-y=4 2x-y=6 would this be x=2+0.5y x=3+0.5y and then graph as that??????? not really sure what i am doing here Put both equations in the form of y=mx +b Then observe that the slope is the same, the lines are parallel, and have no common

asked by clueless on May 20, 2007
44. ## statistic

Ten individuals went on a low–fat diet for 12 weeks to lower their cholesterol. Evaluate the data below. Do you think that their cholesterol levels were significantly lowered? (Show all your work i.e. Ho and Ha, p-value, conclusion in words)

asked by etoile on March 21, 2015

Find the values of the 30th and 90th percentiles of the data. Please show your work. 129, 113, 200, 100, 105, 132, 100, 176, 146, 152

asked by Ciaria on April 1, 2015
46. ## physics

A 15kg model plane flies horizontally at a constant speed of 12.5 m/s and the kinetic energy is 1171J and the potential energy is 3000J what is the new horizontal velocity? Please show work and explain.

asked by Kim on January 17, 2011
47. ## Chemistry

What mass, in grams, of sodium carbonate is required for complete reaction with 8.35g of nitric acid to produce sodium nitrate, carbon dioxide, and water? [Show work]

asked by Melissa on February 12, 2014
48. ## Physics

If you suspend a 90-N rock beneath the surface of ethanol, the tension required to support it is only 60 N. What volume of ethanol (density of 789.2kg/cubic meter) must therefore be displaced? Show your work.

asked by Lenny on February 7, 2017
49. ## Algebra 2

Find the values of the 30th and 90th percentiles of the data. Please show your work. 129, 113, 200, 100, 105, 132, 100, 176, 146, 152

asked by Ciaria on April 1, 2015
50. ## Physics

A fire hose held near the ground shoots water at a speed of 13m/s.At what angle should the nozzle point in order that the water land 16m away?Why are there two different angles? Please show the all the work thank you very much.

asked by Arman on September 13, 2016
51. ## math

obesity is defined as a body mass index of 30kg/m2 or more. A 95% confidence interval for the percentage of U.S. adults aged 20 years and over who were obesity was found to be 22.4 to 23.5%. What was the sample size???? Can you please show your work??

asked by rina on October 6, 2011
52. ## math

"A 12-pack of cinnamon scented pencils sells for \$3.00 at a school booster club sale. What is the sales tax rate if the total cost of the pencils is \$3.21?" what is the answer and how do you show the work?

asked by Unknown on January 9, 2012

A hoodlum throws a rock straight down from the roof of a building 109m high. If it takes 2.40s to hit the ground below, with what initial speed was the rock thrown? Please show all work

asked by Georgy on December 20, 2014
54. ## math

What is the length of the midsegment of the trapezoid made by the vertices A(0, 5), B(3, 3), C(5, -2) and D(-1, 2). Show equations and all work that leads to your answer. Answer Skip text editor options Collapse: Formatting Toolbar

asked by shianne on November 21, 2013
55. ## Physics

A 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days? Please show how to work this

asked by Darlene on March 20, 2014
56. ## Chemistry

Consider the decomposition of a metal oxide to its elements where m represents a generic metal. M2O(s)2M(s)+1/2O2(g) the delta G is 10.30 I need to find K and PressureO2 at 298K I know the equations but i keep getting the answer wrong could you please help

asked by Catherine on July 12, 2013
57. ## Math

Each side of a triangle ABC is 75 units long. Point D is the foot of the perpendicular drawn from A to side BC. Part E is the midpoint of line segment AD. Find BE. Show picture and work.

asked by Mary on February 8, 2009
58. ## Chemistry

In this balanced equation 4Al + 3O2 = 2Al2O3. When 0.54 mole aluminum is reacted in a closed container with 7.80 g oxygen, how many grams of aluminum oxide can form. Please show steps to work out. Thanks

asked by Pamela on July 16, 2011
59. ## math

A chemist has 80 pints of a 20% iodine solution. How many pints of iodine must be added to produce a solution that is 33.1/3% iodine? Please help me work this through Let X be the number of pints of iodine that must be added. You start out with a mix that

asked by :) on March 2, 2007
60. ## computer programming

Create the psuedocode for an application class named Monogram. Its main() method holds three variables that hold your first, middle, and last initials, respectively. Create a method to which you pass the three initials and that displays the initials

asked by tom on March 10, 2017
61. ## Computer Programming

Create the psuedocode for an application class named Monogram. Its main() method holds three variables that hold your first, middle, and last initials, respectively. Create a method to which you pass the three initials and that displays the initials

asked by James on October 21, 2017
62. ## chemistry step by step for me

100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density is 1.25g/ml. 50ml of 20.8% bacl2 and 100ml of 938% h2s04 solutions are mixed. Molarity of cl ions in

asked by Ken on November 16, 2014
63. ## chemistry Ben

50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. molarity of cl ions in the resulting solutions is At.wt of ba = 137 100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of

asked by Ken on November 16, 2014
64. ## Math

Determine the sum of the first 20 terms of the arithmetic sequence in which ... f) the 7th term is 43 and the 13th term is 109 I know you can make two equations : 43 = a + 6d and 109 = a + 12 d And subtract them to get d = 11 But I know there's another way

asked by Crystal on January 12, 2013
65. ## Math (matrices)

No one answered my matrix question. Let me rephrase: Let A, B, and 0 be 2x2 matrices. Assuming that A is invertible and 0 is all zeroes, what is the inverse of the matrix [A|0] [B|A] (that is a 4x4 matrix represented as 4 2x2 matrices) The answer is in the

asked by James on November 16, 2006
66. ## GEN MATH

Solve the ff. problems below. Show your complete solution: 1.) A number added to four times its reciprocal is equal to the sum of 3/2 and the quotient of two or more than three times the same number and four. 2.) A car travelled the first 240 kilometers at

asked by lab on July 31, 2016
67. ## math

solve each equation for 0=/

asked by sh on February 15, 2009
68. ## Language Arts

Based in the passage, why did the author write " The perfect house?" A. To show that women should be housewives and that Gabe was foolish. B. To show that Gabe was a strong woman and men were not equal to her. C. To show that women are more than house

asked by Anonymous on October 14, 2014
69. ## Computer Science

After reviewing an algorithm that allowed a user to enter 3 different numerical values, if statements were used to find the smallest value. Smallest of five: The assignment is to determine which method (either nested conditions, sequential compound

asked by Kimberly on August 24, 2012
70. ## Chemistry

Define a system and state the significant the enthalpy change for the system. Explain your reasoning? A) natural gas burning in a furnace B) melted wax solidifying

asked by Saarah on September 11, 2013
71. ## Gen Chem

Consider the following reaction, A B in a 1.00L container. At 1.77°C, the molar concentrations of A and B, respectively, 5.838M and 3.945M. Suddenly, 8.744 moles of A are added to the system. What is the change in DG of the system? Give the answer in kJ?

asked by Sarah H on March 28, 2008
72. ## heath economic

most major health insurance policies have a deductable and coinsurance features. What are the purposes of such system? Are they necessary? What are the expected effects and problems that could arise as a result of implementing such system?

asked by abd on May 17, 2011
73. ## Physics

a labourer raised a load of mass 200kg by a system of pulley he exert a force of 600n on the rope calculate (1)the velocity ratio (2) ma (3) the efficiency of the system

asked by JOEL HOPE on May 26, 2019
74. ## Chemistry (Check)

Completion 1)Transition Metals 2)Stock 3) Many of the ___1____ have more one common ionic charge. These ions are named using either the ___2____ system or the __3____ naming system. 3. IUPAC

asked by Bryan on January 2, 2007
75. ## Physics

Three equal masses are suspended from a frictionless, massless pulley system, as shown. Once the system has reached equilibrium, 1) what angles will the strings make with respect to the horizontal

asked by Anonymous on October 7, 2016
76. ## Gen Chem

Consider the following reaction, A B in a 1.00L container. At 1.77°C, the molar concentrations of A and B, respectively, 5.838M and 3.945M. Suddenly, 8.744 moles of A are added to the system. What is the change in DG of the system. Give the answer in kJ?

asked by Sarah H on March 28, 2008
77. ## Science

Which of these correctly describes how a system can store potential energy on the microscopic level?” A. The particles must have position with regards to a reference point if the system stores potential energy B. The particles must be in motion if the

asked by Emily on September 18, 2018
78. ## cild care

Which one of the following statements about childcare centers is correct? A. Childcare centers can't get a license unless they apply to enroll in a QRIS system. B. Childcare centers are automatically enrolled in a QRIS system when they apply to be

asked by Anonymous on July 23, 2012
79. ## Law and Ethics

Hi, I'm a incoming freshmen to a university. Over the summer I obtained the book that we would be using for a course. I have spent several hundred hours of self research and self teaching reading the whole entire book and solving every single problem in

asked by George on July 12, 2011
80. ## Algebra Help

I got 2 more intense problems like this. Can someone show me the way for each step so I can follow along with the other problems I have to do? ThankS! A gardener has 40 feet of fencing with which to enclose a garden adjacent to a long existing wall. The

asked by Katlyn on August 3, 2009
81. ## MATH

6. It takes Pam 45 minutes to drive to work and 60 minutes to drive home from work. Write the ratio of the time Pam spends driving home from work to the time she spends driving to work in three different ways. 7. Ben needs to buy orange juice. He can buy

asked by goldensparklegirl222 on November 23, 2015
82. ## Mechanics

Two bodies of masses 8 kg and 4 kg move along the x-axis in opposite directions with velocities of 11 m/s-positive x-direction and 7 m/s-negative x-direction, respectively. They collide and stick together. Find their center of mass. Show the solution and

asked by Aries on September 19, 2013
83. ## Math

Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all the real zeros of the function. x^3 - 28x - 48 = 0 x=2 I have no idea how to start this problem!!

asked by Kate on April 1, 2009
84. ## Dynamics

A boy running a foot race rounds a flat curve of 50 ft radius. If he runs at rate of 15 mph, at what angle with the vertical will be inclined his body? A.) 16.75° B.) 13.67° C.) 76° show solution step by step thanks

asked by Carl on July 14, 2018
85. ## calculus

find the solution of the differential equation dy/dt = ky, k a constant, that satisfies the given conditions: y(0)=50, y(5)=100 please show steps. INtegrate dy/dt I think the answer will be in the form of y=e^kt + C check that and see if it works. You

asked by ae on April 10, 2007
86. ## chemistry

Ethanethiol (CH3CH2SH, pKa=10.6) was named the smelliest substance in existence. Draw the equilibrium that forms when ethanethiol is added to a solution buffered at pH 9, and show the relative proportions of all organic species.

asked by Amy on September 12, 2012
87. ## physics

When 1180 J of heat are added to one mole of an ideal monatomic gas, its temperature increases from 272 to 292 K. Find the work done by the gas during this process. I know the specific heat is Q/delta T, so C = (1180 J)/(20K) = 59. This seems like any easy

asked by tmaria on June 22, 2007
88. ## Biology

The following chemicals have the indicated formula weight Surcose = 342.3g; Potassium dihydrogen=136.09; and Tris=121.14 Also the following solution already made: 20%SDS, 5M NaCl, 500mM EDTA. You have a 40% glycerol solution, and 10X TBE. List the step to

asked by Robert on August 27, 2008
89. ## Biology

Imagine that you have been asked to provide an explanation about the structure and function of this system to a specific segment of the general public, perhaps a group of senior citizens, pregnant women, or student athletes, who want to learn more about

asked by tyrane on September 18, 2008
90. ## Psychology Final Exam 2

Check my answers? 17. A _________ is the functional unit of the nervous system. (1 point) Neuron******* Dendrite Head Cell body 18. The Central Nervous System consists of the __________ and __________. (1 point) heart and blood vessels muscles and tendons

asked by Ava on December 6, 2016
91. ## computers

Scenario: You have been employed as the IT Director for the ABC Company. The company comprises 15 employees and it has not upgraded its computer system since 1996. Project: The President of the Company has asked you to replace the computers in every

asked by Jackie on August 22, 2010
92. ## Systems (maths)

Determine the system which is equivalent to the system: 3x+4y=12 x-2y=9 a) 3x+4y=12 3x-6y=27 b) 3x+4y=12 2x-4y=18 c) 10y=-15 5x=30 d) Any of A,B or C

asked by Nina on July 25, 2009
93. ## Chemistry

What is the correct way to write a chiral system or R and S system?

asked by Chris on April 26, 2011
94. ## biology

The SI system as a what kind of system and what multiples are they expressed in?

asked by ..... on August 16, 2008
95. ## software enge.

What are the task of system enginering and system analyst?

asked by lalit on February 6, 2009
96. ## human body

How is the integumentary system involved in the immune system?

asked by running.from.myself on February 7, 2012
97. ## science

in which way does the circulatory system rely on the skeletal system

asked by Xavion Midnight on November 1, 2018
98. ## Math

1) What is the value of y in the system x+3y-z=-3, 6x=2y-1 and x=z+3 IF x = 5/6 and z = 23/6? 2) Given the systems x+y+z=-14 and 2x+y+6z=16, how many number of solutions to the system are there?

asked by Annika Rae on January 5, 2014
99. ## Algerbra

how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will do the left side.. 21x + 29= Now, subtract sixteen x from both sides, and subtract 28 from both sides. I will be happy to check your work. 7(3x+4)=8(2x+5)+13 21x + 29 is 7 times 4 28? 21x+

asked by Tony on March 26, 2007
100. ## Chemistry

You have 20mL of a solution of concentration 0.015mg/mL of x in test tube #1. Prepare serial dilutions of your stock solution, and calculated the concentration of x as follows: Add 10mL of distilled water and 10mL of stock solution from test tube 1 to test

asked by Jon on November 3, 2010