# 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

91,330 questions, page 344
1. ## Chemistry

What is the pH of a solution in which [H30+] = 1.2 x 10^-3 M? A)1.20 B)2.92 C)11.08 D)12.80 E)8.33 x 10-12

asked by jim on April 28, 2010
2. ## algebra

What is the solution to the equation 1/x - 6/x^2 = -12 a. x= 3/4 or x= -2/3 b. x= 3/4 or x= 2/3 c. x= -3/4 or x= 2/3** d x= -3/4 or x= -2/3

asked by h on May 14, 2018
3. ## math

Solution of 2xyy' + 3x = -2 y^2

asked by fatimaaa on April 9, 2016
4. ## algebra

a=3b for b The solution for a = b=3a did I do this backwards?

asked by algebra on September 11, 2009
5. ## calculus

what is the solution of this inequality?: x+3/x^2-5x+4>_0?

asked by Destiny on January 31, 2012
6. ## chem

What is the pH of a 0.22 M solution of HClO4?

asked by val on December 6, 2012
7. ## ALGEBRA PLS

is (0, 3) a solution to the equation y = x + 3? -Yes -No I think Yes.

asked by anonydingdong on September 15, 2015
8. ## algebra

which value of X is the solution of the equation: 2X/3 + X/6 = 5 ?

asked by sejla on February 1, 2010
9. ## calculus

what is the solution of this inequality?: x+3/x^2-5x+4>_0?

asked by Destiny on January 31, 2012
10. ## algerbra

-x/7=1/26 the solution is x=___________

asked by Connie on November 17, 2011
11. ## Mathhhhhh helpppp plz

Which equation has (2,-1) as a solution? y=2x-1*** y=x+3 y=x-3 y=-2x+1

asked by Haley on November 16, 2017
12. ## Math

Name a solution for each inequality: 2x+y>4 y-2+3x y-x

asked by Branson on May 26, 2011
13. ## chemistry

what is the OH of a 0.025 M HF solution?

asked by Arnetia on November 26, 2013
14. ## maths2

|10x - 1| = x - 10 A. -1, 1 B. 1 C. -1 D. No solution

asked by mdan on October 6, 2013
15. ## algebra

please help me: consider f(x) = -6x-1 and g(x) = 4x^2 figure the solution for (fg)(x)

asked by Alaska Diamond on September 6, 2013
16. ## math please help

what is the solution of 3-8x = 141? -18 -12 1/18 18

asked by hunter on February 20, 2011
17. ## math

Which of the following is a solution to the equation y = 3x – 1?

asked by yeet on October 17, 2018
18. ## algebra

5/8x + 1/16x = 7/16 + x The solution is x=

asked by deb on March 31, 2011
19. ## math

is (-5,3) a solution for 8x+3y=-1 I say yes my husband says no

asked by Renee on February 20, 2010
20. ## algebra

what is the solution of this problem 0.6x+8

asked by peaches on October 21, 2010
21. ## algebra 1

what is the solution for this equation -9/16 - 7/16 =

asked by robbie on December 4, 2010
22. ## math

How do you know if a value is a solution for an inequality?

asked by scooby9132002 on May 21, 2009
23. ## Algebra

log(4)(3x + 4)^5 = 15 x = 20? And is this the only solution?

asked by Anonymous on December 16, 2014
24. ## algebra 116

the solution set for 9-24-64

asked by kisha on March 20, 2011
25. ## math

What is the solution of the equation |2-x | =3

asked by natalie on June 3, 2013
26. ## Physics

What is the displacement of 45° SE 13 km and 20° NE 14 km?? (With Solution)

asked by INeedThisToday(2/6/17) on February 6, 2017
27. ## algebra- please help

graph by solution y= 7/4x-4 y= -1/4x+4

asked by Anonymous on August 23, 2013
28. ## Algebra

x+1/6=-2/3 solution set?

asked by Tammy on April 13, 2011
29. ## Algebra HELP PLEASE

Which is a solution to the equation y = 2x 5?

asked by Sara on September 26, 2014
30. ## Chemistry

What is the pH of a solution of NaOH 10^-12 M?

asked by Erin on April 8, 2014
31. ## Chemistry

What is the pH of a solution whose [H3O+] is 9.2× 10^−9 M?

asked by Sara on March 11, 2014
32. ## Math

4 - t = (t - 1) -5 3 6 No solution *** Identity

asked by Babana on November 29, 2017
33. ## chemistry

WHAT PROPERTY OF SOLUTION IS DESCRIBED BY ITS pH?

asked by denis on November 8, 2011
34. ## math

solution of 24.15 divided by 15

asked by eliseo lacanaria on April 4, 2013
35. ## math

what is the solution to the proportion 4/12= 10/x

asked by makayla west on November 20, 2014
36. ## maths

determine if ( 5/6,-2) is a solution to -6x -7y - 9

asked by ngo on March 24, 2011
37. ## Chem

6.6×10−3 M Ba(OH)2 and 1.00×10−2 M BaCl2 what is [OH-] of solution?

asked by Lilly on June 21, 2011
38. ## Math

Simplfy the following (x^2-9x+9)-(-2x+4)+(6x^2-7x-5) solution: x^2-0 -x+2+ thats as far as I got

asked by nadine on October 7, 2008
39. ## algebra

Please help me figure this out: consider f(x) = -6x -1 and g (x) = 4x^2 solution for (f+g)(x)

asked by Alaska Diamond on September 6, 2013
40. ## science-chem

Four bottles, labeled A through D, each containing about 5 grams of finely powdered white substance are found in a lab. Near the bottles are four labels specifying high purity and indicating that substances are glucose (C6H12O6), sodium chloride (NaCl),

asked by jisun on January 27, 2007
41. ## Chemistry

I am having trouble getting the right answer for this question please help. Calculate Kc for the FeSCN2+ formation equilibrium [FeSCN2+] = 3.49x10^-5 M [Fe3+] = 4.39x10^-4 M [SCN-] = 1.93x10^-4 Kc = [FeSCN2+] / ([Fe3+]-[FeSCN2+]) * ([SCN-] - [FeSCN2+]) I

asked by Amanda on March 20, 2017
42. ## math

George has been hired to paint the smith's house. He needs to be sure his ladder will reach the highest part of the house, so he decides to use the shadow method. The measuring stick is 3 ft., and tits shadow is 5 feet. The shadow of the house is 45 feet.

asked by kat on July 10, 2014
43. ## science,

A set up is used in the preparation of ammonia gas in the laboratory.Draw the set up and label the parts.i. what is the function of calcium oxide.ii.state the method by which gas is collected.iii.how will you test for the gas.iv.write the chemical equation

asked by frances on October 16, 2018
44. ## Chemistry

Hydrogen sulfide is an impurity in natural gas that must be removed. One common removal method is called the Claus process, which relies on the reaction: 8 H2S(g) + 4 O2(g)--> S(l) + 8 H2O(g) Under optimal conditions the Claus process gives 98% yield of S8

asked by Jen on October 31, 2011
45. ## ALGEBRA - Proportional

The velocity ( v meters per second ) of a body is known to be proportional to the sqaure root of it's kinetic energy ( e ejoules). When the velocity of a body is 120m/s it's kinetic energy is 1600J. Write down the relationship between v , e using k as the

asked by AMY on November 5, 2007
46. ## science

compare table salt with glucose table salt is a strong electrolyte that will completely dissolve in a solution. whereas, glucose is a weak electrolyte and won't dissolve in a solution. ex. NaCl in water makes Na+ and Cl- ions glucose in water is basically

asked by 1234 on January 22, 2007
47. ## English

Phoenix Advertising Date: 12/5/2008 To: Entire Executive Team Cc: Mr. Forest From: Mrs. Goodridge VP Human Resource RE: Roanoke Branch Employee Concerns As the Vice President of Phoenix Advertising Human Resource Team, I would like to review with all of

asked by Sabrina Goodridge on December 7, 2008
48. ## Science Help! I have a deadline!!

Match the following. 1. Rocky Mountain spotted fever 2. information about plants 3. eroded material 4. sun, wind, thermal 5. yellow fever and malaria 6. receives radio waves 7. major problem of underdeveloped nations 8. method of mountain formation 9.

asked by Morgan S on January 7, 2013
49. ## Math

Day Number of Players Amount Collected Monday: 4 \$ 88 Tuesday: 7 \$154 Wednesday: 6 \$132 Thursday: 3 \$ 66 Friday: 2 ???? A.On Friday, the coach will collect fees from 2 more players. What is the total amount of money the coach will collect from the 2

asked by Frances on May 7, 2011
50. ## Visual Basics 2008

This is a from chapter 3 #82. the problem is: Write a program to calculate the amount of a server's tip given the amount of the bill and the percentage tip obtained via imput dialog boxes. The output should be a complete sentence that reiterates the inputs

asked by Lee on October 22, 2010
51. ## algebra math

(QUEESTION 1) In view of the soccer fever, the PE department bought x identical soccer balls for \$450.If the price of each ball was reduced by \$3, they would have bought 5 more balls. (a) write down the price of each ball (b) write down the price of each

asked by jackydrewls on May 21, 2012
52. ## Chemistry (Acids and Bases)

I just did a lab on Acids and Bases and I am having trouble with the lab questions I was given to complete. Concentration of NaOH: 0.09999 M Volume of NaOH: 3.25 mL # moles of NaOH: 0.325 moles Initial Concentration of Weak Acid: ? (How do we calculate

asked by Lalu on March 29, 2009
53. ## Chemistry

I just did a lab on Acids and Bases and I am having trouble with the lab questions I was given to complete. Concentration of NaOH: 0.09999 M Volume of NaOH: 3.25 mL # moles of NaOH: 0.325 moles Initial Concentration of Weak Acid: ? (How do we calculate

asked by Lalu on March 29, 2009
54. ## Physics

Air resistance acting on a falling body can be taken into account by the approximate relation for the acceleration. a= dv/dt= g-kv, where k is a constant. A) Derive a formula for the velocity of the body as a function of time assuming it starts from rest

asked by David S. on November 7, 2006
55. ## 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

asked by Armando on December 18, 2006
56. ## math

nick has a revolving department store credit card account with an annual percentage rate of 15% last month's balance on the account was \$423.78 during the current month he made purchases totaling \$123.42 and he made a payment of \$100.00 the store uses the

asked by Anonymous on November 8, 2007
57. ## biology

1. Some photosynthetic bacteria are able to harvest 900-nanometer light (4 points). A. What is the energy in kilocalories of a mole (an einstein) of 900-nanometer light? B. What is the minimum number of 900 nanometer photons needed to form one molecule of

asked by andy on April 13, 2010
58. ## Chemistry

The sodium sulfite-acid solution should be disposed of by ____________________. Answers Options: 1) washing down the drain with large amounts of water. 2) washing out with diluted sodium bicarbonate for sink disposal. 3) neutralizing the solution with

asked by Carley B. on February 8, 2017
59. ## Chem

The sodium sulfite-acid solution should be disposed of by ____________________. Question 5 options: 1) placing it in a designated waste container inside the fume hood. 2) reacting it with potassium permanganate before placing in a designated container

asked by Haley on February 8, 2017
60. ## chemistry

A domestic cleanser contains concentrated HCl as the active ingredient. A titration experiment was carried out to determine the concentration of HCl in the domestic cleanser. 20.0 ml of the cleanser were diluted to 250.0 ml with distilled water. 25.0 ml of

asked by henry39 on December 24, 2016
61. ## physics

Speakers A and B are vibrating in phase. They are directly facing each other, are 7.4 m apart, and are each playing a 72.0 Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interference

asked by Coreen on April 29, 2007
62. ## English

I forgot to add the following details. I really hope you can have a look at them. 1) In 1903 Emmeline and Christabel Pankhurst set up the Women’s Social and Political Union. They campaigned with other women for more rights and recognition for women’s

asked by Henry1 on May 23, 2011
63. ## inverse

find f^-1 (x). (this is asking me to find the inverse) f(x) = -(x-2)^2, x If f(x)=-(x-2)^2 x

asked by kristie on July 11, 2006
64. ## Science check my answers please

1. Convert 4.0 kilometers (km) to meters (m). (1 point) 0.04 m 40 m 400 m 4,000 m (my answer) 2. For his science project, Austin wants to determine if the pH of standing rainwater changes over time. He collects a jar of rainwater and places it indoors in a

asked by OCA student on October 2, 2017
65. ## CHEM

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse

asked by JSJFJF on February 19, 2012
66. ## chem

A sewage cleanser contains concentrated hydrochloric acid (HCl) as the active ingredient. A titration experiment was carried out to determine the concentration of hydrochloric acid in the domestic cleanser. 25.0 mL of the cleanser were diluted to 250.0 mL

asked by raiser on October 13, 2016
67. ## Social studies

I am lost .. Why did the great compromise establish a two-house legislature? A:to fairly represent all states B:to allow for population growth C: to provide checks and balances D: to prevent unconstitutional laws***? In what way did the structure of the

asked by Lexi on September 23, 2016
68. ## economy

Can you please help me solve the first problem of Working with the Data in Chapter 4 (page 136 #1) of Macroeconomics Fifth Edition by Stephen D. Williamson? I need all the steps of how to solve the problem 1. The employment-population ratio, from the

asked by boby on March 23, 2016
69. ## english

I have to identify the adverb, what is modifies, and identify if the modified word is an adverb, adjective, or verb. They work very carefully when they are up in the tops of trees. Adverb very describes adverb carefully? adverb carefully describes verb

asked by Kelley on January 28, 2016
70. ## math, functions

f(x) = 1/(1−x) is given. From this we produce two new functions: g(x) = f(f(x)) and h(x) = f(g(x)). (a) For which values of x is f(x) undeﬁned? (b) Find a formula for g(x), and simplify it. (c) For which values of x is g(x) undeﬁned? (d) Find a

asked by (A question about functions.) The function on May 4, 2016
71. ## math !

1)Jane Gutierrez earns \$8 an hour selling ice cream. If she earns \$48 (d) working 6 hours (h), what is the independent variable? What is the dependent variable? Explain your answers. 2)Abigail Nyu went to the mall with \$60; she wants to purchase several

asked by Q&J Wiiffeyy on May 19, 2016
72. ## biology

A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotypes. She interbred this F1 generation (cross B) and counted the offspring, which consisted

asked by Anonymous on January 22, 2008
73. ## biology, plz help!

A girl crossed a pure short, black haired animal with a pure long, brown haired individual (cross A). The F1 consisted of 10 individuals who had all the same phenotypes. She interbred this F1 generation (cross B) and counted the offspring, which consisted

asked by Anonymous on January 22, 2008
74. ## Physics

A geostationary satellite orbits the Earth in such a manner that it is always directly above the same point on the equator as the Earth rotates. Assuming that this orbit is circular, what is its radius? (The mass of the Earth is approximately 5.97 × 1024

asked by Joe on April 15, 2016
75. ## Stats

Among 15,378 Delta airline passengers randomly selected, 3 were bumped from a flight against there wishes (based on data from the us dept of transportation) find the probability that a random selected passenger is involuntarily bumped. Is such bumping

asked by Help please! on February 1, 2011
76. ## religion help!

I've gone to the websites that i've received but i'm still not understanding the religion on hinduism. I have to answer 3 questions only then write a paper. can anyone help me. where i can actually find these answers at least. Questions are: (1)

asked by jasmine20 on December 29, 2006
77. ## ATTN: DRWLS RE: PHYSICS

pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john?

asked by samir on January 23, 2010
78. ## statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

asked by Anonymous on September 21, 2012
79. ## statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

asked by LWatson on September 21, 2012
80. ## chemistry pls help me asap

100cm^3 of a sodium hydroxide,NaOH solution contains 4.0g of solid sodium hydroxide,NaOH.40 cm^3 of phosphoric acid,H3PO4 is needed to neutralise 40cm^3 of the alkali.(RAM:H,1;O,16;Na,23;P,31) (a)Calculate the molarity of the sodium hydroxide,NaOH

asked by mandy on May 7, 2014
81. ## algebra

how do i work 2x+3[4-(3x-7)]

asked by kyisha on May 2, 2011
82. ## Algebra

how would you work this out? C=3A + 3b

asked by Joshua on September 7, 2011
83. ## mat116

G(z)=4z+2 how to work this

asked by marty on July 25, 2010
84. ## math

how do i work out 10% of £6.80

asked by amanda on June 20, 2010
85. ## math

-4/5 + (-3/4) how do I work this

asked by barb on July 22, 2010
86. ## math

work out [3*4*9(

asked by chasmine on August 4, 2015
87. ## 8th grade

how do you work this out? 5x-6x and 6x+2x-3

asked by shay on October 20, 2009
88. ## math

how do you work out 5x-2y=4 3x+y=9

asked by tink on November 8, 2012
89. ## physics

WHAT IS WORK?

asked by Kenshin on July 5, 2016
90. ## algebra 1b

How do I work this out 3x/(x^2-16) can you help

asked by kay on March 22, 2012
91. ## 6th Grade Math

8w-11=45 Please work this out for me Thanks.

asked by Melea on January 27, 2010
92. ## math

y=4x - 3, work out the value of x when y =11

asked by beth on April 26, 2008
93. ## calculus

how do you work out what ||u||2 is when you are given u: and v:

asked by Anonymous on November 23, 2016
94. ## math

How do I work 2s^3-4r^2 if s=5 and r=1?

asked by julie on September 2, 2015
95. ## MATH

7 - 6 -- ----- y^2-49 y^2-2y-35 with work if possible please

asked by Amy on September 19, 2007
96. ## algebra

x^2-2x=35 Could work this for me.

asked by Angelia on May 17, 2010
97. ## math

How do you work out 7.00 x 4.78

asked by Anonymous on January 24, 2010
98. ## MATH

-4x+9-8x>-6-5 with work!(:

asked by Kristen! on February 6, 2013
99. ## math

how does this work?

asked by cailin on December 19, 2014
100. ## algebra

Work out the value of 4(x+1) 4(x+1) when x=3

asked by Holly on June 12, 2011