# 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 410
1. ## Language arts essay

Both forest fire and why leaves change color in the fall present factual information. write an essay of your own about one of these essays. in your essay, tell whether the author provided enough information for you to understand the topic fully. Then

asked by Julianna on October 8, 2018
2. ## Algebra 1 HELP!!!(Word Problems!)

Sunset rents an SUV at \$21.95 plus \$0.23 per mile. Sunrise rents the same vehicle for \$24.95 plus \$0.19 per mile. For what mileage is the cost the same? Hint: Using "m" for miles, write one equation for each rental company.

asked by Margie on November 6, 2006
3. ## Chemistry

A 100.0 ml sample of 0.300 M NaOH is mixed with a 100.0 ml sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions were initially at 35.0 degrees celcius; the temperature of the resulting solution was recorded at 37.0 degrees celcius. Determine

asked by Kristy on November 10, 2010
4. ## Math

Ricardo spends \$3.50 for lunch each day. Write and solve an equation to find how long it takes him to spend \$21.00 3.50x=21.00 3.50(6)=21.00 6. A spiral toy that can bounce down a flight of stairs is made from 80 feet of wire. Write and solve an equation

asked by Jerald on December 4, 2013
5. ## Math

Did I solve this problem right? Here is the question: Use least common multiple or greatest common factor to solve this problem. Mark has 153 hot dogs and 261 hot dog buns. He wants to put the same number of hot dogs and hot dog buns on each tray. What is

asked by B.B. on July 4, 2009
6. ## HSM210

Mrs Sue, Sorry to keep bothering you ! I have once more corrected the four answers . Do you mind checking them again. I so hate these assignments as I have such a hard time. Thank you so much for looking over my answers for me. 8. The victims’ rights

asked by david on January 19, 2010
7. ## payroll accounting

Julie Whiteweiler made \$930 this week. Only social security (fully taxable) and federal income taxes attach to her pay. Julie contributes \$100 each week to her company's 401(k) plan and has \$25 put into her health savings account (nonqualified) each week.

asked by Gary on March 7, 2012
8. ## chemistry

Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete

9. ## MicroEconomics!!!

Can you help me with these 16 Questions? I have shown my answers that i thought were correct for all but 2 of them. Do you mind letting me know what you think. Thank you so much. Anything will help!! I have placed an *****. By the ones i think are right!

asked by Danielle on August 15, 2010
10. ## calculus

I have to help teach this class tomorrow for my Senior Seminar Math class. The lesson is over Exponential and Logarithmic Functions and L'Hospital's Rule. I have all the problems needed to review this lesson, but i can not solve any of them. My teaching

asked by Primo on September 22, 2008
11. ## Media/News Accounts Question

Which one of the following would most likely describe David Broder's view of George Stephanopoulos,a former member of the Clinton Administration,hosting the Sunday morning television news show "This Week": A. George Stephanopoulos is an asset to "This

asked by Calinda on January 22, 2007
12. ## physics

Zephram is on roller blades on a hill. He starts from rest and skates for 5.5s accelerating uniformly at 3.5m/s2. Show that the distance traveled is 53m.

asked by Daisha on February 12, 2011
13. ## Statistics

An airline experiences a no-show rate 6%. What is the maximum number of reservations that it a capacity 160, if it wants the probability of accommodating all reservation holders to be at least 95?

asked by Anonymous on November 15, 2012
14. ## math

Robert feeds his dog 1lb.4oz ofdog food a day. How long will a 40 pound bag last? Please show steps

asked by beverly on February 22, 2011
15. ## Physics

W.K.T, Magnetic Force qvB=mv^2/r ... n we know how to prove it too.... But how to show that the radius of curvature of the circular path is proportional to the linear momentum of the charge ?

asked by Minho on January 27, 2016
16. ## science

Which of the following chemical reactions is written to show that mass is conserved? A H2O to H2+O2 B CH4+202 to CO2+2H2O C Mg+HCI to 3MgCI0+H2 D N2+H2 to NH

asked by Tiffany on October 26, 2010
17. ## Physics

Hello can some one show and exlpain to me the derivation of this formula? V = (Ft(mL^-1)^-1)^(2^-1) or simply V = sqrt (F/(m/L)) were V = the veloctiy of a piece of string Ft = the force of tension m = mass L = length Thank you!

asked by Physics on June 7, 2009
18. ## University of Papua New Guinea

Give equations with reaction conditions to show direct esterification methods for the production of A) isopropyl butanoate B) ethyl- 2-methylpropanoate

asked by Esther on October 12, 2015

Factor by Grouping. PLEASE SHOW ME THE STEPS! 1.) 6x2-21xy+8xz-28yz just to make it clear,the 2 infront of -21 is actualli an Exponent 2. 2.) x2+5x+7x+35

asked by Nini on April 6, 2009
20. ## Social Studies

Explain how capitalism has adapted (changed) from when it first began. Compare it with the modern Canadian mixed economy. Show how the two economic systems are different.

asked by Anonymous on September 30, 2008
21. ## Math

Express each fraction as the sum of two or three equal fractional parts. Rewrite each as a multiplication equation. Show part (a) on a number line. 6/11

asked by Anonymous on January 22, 2019
22. ## Biochemistry

Could someone please explain to me what Lineweaver Burk plot is trying to show? I know the definitions, and I know it represents the Michaelis-Menten equation, but I just need to know what it MEANS in simple English. Thanks!

asked by Chris on February 8, 2009
23. ## Ela

Proper phrasing is needed when reading aloud to....... A: show expression B:read all of the words correctly C:separate ideas like when speaking Can you help me please? I think its C am I right.

asked by Jasmine on August 26, 2016
24. ## cultural diversity

when middle-class mainstream teachers reprimand children for verbalizing spontaneously, they show a preference for facilitating language development through

asked by elisha on April 18, 2014
25. ## College Chemistry

H2C=C=CH2 molecule is linear, what are they hybridization states of the carbon atoms? draw diagrams to show sigma and pi bonds.

asked by George on May 8, 2011
26. ## electrical electronics

Find the value of the remaining components of a common emmitter amplifer circuit given Ic=3mA, Tr=ZTx300, hfe=80, F=40Hz, Ve=2.5 show workings

asked by john on March 20, 2016
27. ## Chemistry Help!!!!!!!!!!!!!!

for the following elements show the allocation of electrons to their orbitals on the basis of the Pauli exclusion principle and Hund's rule. a) Carbon b) Silicon Thanks!

asked by Kim on August 26, 2014
28. ## Pre-Calculus

Can someone please help me with this question? Show that x=a cos t+h, y=b sin t+k; 0

asked by Anonymous on June 13, 2015
29. ## ENGLISH

Show me how to do this.. On A4 sheet write comparitive of 15 adjectives(font size 20) and stick cut outs of related pictures on the margines.

asked by laly on August 22, 2013
30. ## Chemistry

The reaction: 2 HI==> H2 + I2, is second order and the rate constant at 800 K is 9.70 x 10-2 M-1 s-1. How long will it take for 8.00 x 10-2 mol/L of HI to decrease to one-fourth of its initial concentration? can someone please show me how to set this up?

asked by Bababab on March 3, 2010
31. ## Calc

function: f(x)=x^2-12x+35 Interval [6,6.5] How do you find the slope of the second line? Can you show this in the formula? and what would the answer be rounded to four decimal places as needed.

asked by Jules on May 26, 2018
32. ## math

What is the least common multiple of 864,624 and 819. Can you please show the steps. I know that they are both divisible by 3 but can't find the next lowest prime number to divide them by?

asked by Kelley on November 12, 2017
33. ## math evaluation

So how am I suppose to Evaluate the expression and put it in simplest form? It's 7th grade math. The question I need help on is: -8/3 + 1/4. If u comment and show me how u got an anwser THANKS!!!!!

asked by Allison Earnheart on October 4, 2014
34. ## Maths

Thnx Reiny & Steve 4 d help rendered in per the past questions. Plse help in this, If the line through the point y=2x+c touches the hyperbola 4(x)^2-6(y)^2=24. Show that c=+-2sqrt5.

asked by Joel on September 25, 2016
35. ## mathematics integration

Perform a change of variable and integrate the following elliptical integral I = Square root [(1-x^2)*(2-x)] limits lower,-1 and upper +1 could you show working

asked by Rikki on November 2, 2011
36. ## Calculus

Using 4 equal-width intervals, show that the trapezoidal rule is the average of the upper and lower sum estimates for the integral from 0 to 2 of x squared, dx .

asked by Ernie on May 7, 2018
37. ## CHEMISTRY

0.560g of potassium hydroxide is added to 25.0 cm^3 of 1.00 mol dm^-3 of hydrochloric acid.Find the limiting reagent & please show the working.THANKS IN ADVANCE.

asked by ALIYAH on May 8, 2011
38. ## algebra

I'm sorry about the carelessness of my first question. The correction should read: y=x^2-4x -32.Use this function to find the x-intercepts by factoring;then show how the value of the discriminant supports your conclusion(s). I'll try to be more careful

asked by Jack on January 10, 2017
39. ## Binomial expansion

The coefficient of x^2 in the expansion of (4-3x)^n as a series of ascending powers of x is -9/64. Show that n satisfies the equation 4^(n+1)=2/[n(1-n)] and hence verify that n=1/2. I can do the first part of the problem: 4^n*3^2*n(n-1)/2!*2^4=-3^2/2^6

asked by Helga on February 29, 2012
40. ## ALGEBRA

A right triangle’s hypotenuse is 20 cm long. What is the length of the side opposite a 60° angle? Give your answer to the nearest tenth of a centimeter. • 40 • 18.5 • 20 • 17.3 Please show how.

asked by Sandra on May 10, 2014
41. ## Algebra

The width of a rectangle is fixed at 4 cm. Determine (in terms of an inequality) those lengths for which the area will be less than 88cm^2. Can anybody show me how to do this problem with out giving me the answer, please?

asked by A.W. on March 19, 2009
42. ## Algebra

1. Tell whether x and y show direct variation. a. 5x - 3y = 0 b. x = y - 2 / 9 2. The variables x and y vary directly. Use the values to find the constant of proportionality and write an equation that relates x and y. a. y = 4; x = 6 b. y = 2; x = 10

asked by Dean on May 6, 2015
43. ## diffirential calculus

two points are moving horizontally in space at different heights above the earth. show that the angle of elevation of the line joining them is greater when the distance between them is least.

asked by kait on September 25, 2011
44. ## Maths

I understand that the answer to this is a+b-c, but I'm not sure how to show working out for this. Any help would be great. " O is any point in the plane of the square ABCD. The vectors OA, OB and OC are a, b and c respectively. Find the vector OD, in terms

asked by Vectors on November 25, 2014
45. ## Calculus urgent help

evaluate the limit as x approaches infinity for the absolute value of (the square root of xsquared+x) -x i think the answer is 1/2 from my calculator but I have to show how i got it algebricallly and have no clue what to do

asked by Zak on September 27, 2010
46. ## Chemistry

How much heat (in Joules) is needed to raise the temperature from -79oC to 57oC for 31.5g of water? I remember my teacher using different temperatures for each equation, can someone show me what that is? thanks.

asked by Denny on March 4, 2013
47. ## Math

Factor each expression. Please show me how to do it. Thanx 8x^2-10x+3 15X^2-x-2 8X^2-18X-5 2x^2-5x-88 3x^2+43x-30 3x^2+7x-2 10^2-89x+156 4x^2+11x+13 3x^2-42x+147 5x^2-20x+20

asked by Monte' on October 30, 2007
48. ## supply and demand

I'm looking for help on the third part of this question. I've included preceding questions/answers to show where I'm at. I don't know what to do next. Suppose that a market is described by the following supply and demand equations:

asked by shannon on February 17, 2007
49. ## Math help!

I am having trouble completing my homework on finding the amount when the percent and the base are given. I need help with this question: Find 10.7% of 485. can you show all the steps on how you got this answer?

asked by Lisa on November 15, 2008
50. ## Help needed for Chem!

How can I balance the equation and place coefficients where they are needed for this question: Na + Cl2 -> NaCl please show all the correct steps for this answer because I really need help in understanding it.

asked by Lisa on March 15, 2008
51. ## Maths

What is the area of the minor segment cut off a circle of radius 10 cm by a chord of length 12 cm? Could you please show me the working out for this question? The answer in the textbook is 16 sq cm. Thanks!!!

asked by Candice on December 9, 2011
52. ## Chemistry

Calculate the amount of heat required to raise the temperature of 3 moles of oxygen gas from 298 to 400K. Given that C, of O2 is 29.36 Jmole-'K-'. Please show how to do it.

asked by Dermot on January 18, 2013
53. ## Trigonometry

A=30 degrees, a=9 and b=8. Find the missing sides/angles. I did cos39=x/8 and reduced that to 8cos39=x. I got 6.92. But that's not a valid answer, so I can't go from there. What did I do wrong? Can you show me how to get the other answers as well, please?

asked by Janie on January 24, 2010
54. ## math

you want to pick a four-player tennis team there are eight players to choose from.how many different teams can you form? A)70 B)1,680 C)48 D)336 *plz jus help me or show me how to do it*

asked by help me plz! on June 5, 2014
55. ## chemistry

Given one of the starting materials and end product for each of the following reactions, show all reactants, reaction conditions in brackets (where known) and products. fluoroethane from ethanol

asked by Manny on April 29, 2008
56. ## language arts

I HAVE TO EXPLAIN IN DETAIL 3 SIMILARITIES AND 3 DIFFERENCES FROM THE GIVER AND THE TRUMAN SHOW. I KNOW THEY BOTH HAD STRICT COMMUNITY RULES AND THEY LEFT THEIR COMMUNITIES FOR A BETTER PLACE. PLEASE HELP

asked by sue on June 6, 2013
57. ## statistics

An airline experiences a no-show rate 6%. What is the maximum number of reservations that it a capacity 160, if it wants the probability of accommodating all reservation holders to be at least 95?

asked by Anonymous on November 15, 2012
58. ## pre-cal

Can someone please show me how to find an equation for the line with the given properties. Parellel to the lines 3x-y= -3; containing the point (0,0) y= (then type your answer in slope intercept form)

59. ## History

how could i show evidence that the War on the Homefront supported the soldiers by selling victory bonds and had a positive effect on economic stability?

asked by Rebecca on November 3, 2010
60. ## physics

using a sketchs, show the type of directions of forces acting on the following farm hand tools i) a hoe ii) a rake for land clearing 0

asked by callister on January 27, 2012
61. ## culyurally diverse

when middle-class mainstream teachers reprimand children for verbalizing spontaneouly, they show a preference for facilitaing language development through what?

asked by Anonymous on January 9, 2013
62. ## Grammar

Prepositions show a spacial, time, or logical relationship between the subject of the preposition and the rest of the sentence. A) True B) False AnswASer B

asked by Marie on November 14, 2012
63. ## Statistics

Find each uniform continuous probability and sketch a graph showing it as a shaded area.. If you please show me how you got the answer I would really appreciate. a. P(X < 10) for U (0, 50) b. P(X > 500) for U (0, 1,000) c. P(25< X < 45) for U(15, 65)

asked by Shon on September 8, 2010
64. ## algebra

multiply and simplify by factoring. Assume that all expressions under the radicals represent nonnegative numbers. ^4 sq. rt. (810x^8y10)= show steps if possible.

asked by Randy on June 10, 2012
65. ## Calculus (Derivatives)

Find the derivative of the function f by using the rules of differentiation. F(x) = x^3 – 4x^2 + 3 / x The sign “/” means divided by (OVER)…this problem looks like a big fraction. I am so lost though because I do not know why I keep getting 3x –

asked by B <3 on September 21, 2008
66. ## chemistry

using dots and crosses to represent outermost electron draw diagram to show bonding of carbon four oxide and hydrogen peroxide

asked by maxwell on May 14, 2018
67. ## psychology

I need articles that show how music improves memory? My school's database is not working, so if anyone has links to specific websites (not Google-I know how to do that) it would be appreciated

asked by Anonymous on November 3, 2011
68. ## correct , math

Directions: Facotor each of the following polynomials completely. 14x ^2 -20x + 6 the answer that i got was: 7x^2-10x+3= (7x-3)(x-1) not quite. You left out the two, you just cant throw it away. 2(7x-3)(x-1) can you show me please the steps I am getting

asked by jasmine20 on February 9, 2007
69. ## chemistry

Given one of the starting materials and end product for each of the following reactions, show all reactants, reaction conditions in brackets (where known) and products. fluoroethane from ethanol

asked by Manny on April 26, 2008
70. ## Trigonometry

Law of Sines sigma=27 deg 30' c= 52.8 a=28.1 Please show two solutions (beta1, beta2,...) due to acute and obtuse angles. Thank you so much for helping!

asked by Anonymous on January 24, 2015
71. ## General Chemistry 103

What is the maximum number of Cs+ ions that can be produced per joule of energy absorbed by a sample of gaseous Cs atoms? Please show me how to do this so i can do it for further questions similar to this

asked by Safat on May 2, 2013

Using 4 equal-width intervals, show that the trapezoidal rule is the average of the upper and lower sum estimates for the integral from 0 to 4 of x squared, dx.

asked by Dloc on May 9, 2017
73. ## math

what is a set of atleast twelve numbers that have the following landmarks: maximum:8 Range:6,mode:6,median:5 Show a bar graph of the data

asked by kaleb on October 19, 2012
74. ## math

what is a set of atleast twelve numbers that have the following landmarks: maximum:8 Range:6,mode:6,median:5 Show a bar graph of the data

asked by kaleb on October 19, 2012
75. ## chemistry

Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C? a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol

asked by jess on May 27, 2016
76. ## Math

The two triangle-shaped gardens are congruent. Find all of the missing side lengths and angle measures. Show any necessary work. (Triangle) • On the left, a triangle is shown with a lower horizontal side labeled 7.9 yards, a vertical right side labeled

asked by Agala on February 7, 2017
77. ## Human resources

Management literature generally assumes that supervisors should conduct job analyses because they are in the best position to know what their subordinates do. Does your supervisor really know what you do? What is it about his or her management style that

asked by Rolle on May 19, 2014
78. ## chem

The diameter of a neutral neon atom is about 1.4 multiplied by 102 pm. Suppose that we could line up neon atoms side by side in contact with one another. Approximately how many neon atoms would it take to make the distance from end to end 1 cm? I got

asked by hannah on February 8, 2009
79. ## Chemistry

Bacterial digestion is an economical method of sewage treatment. 5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq) bacterial tissue The above reaction is an intermediate step in the conversion of the

asked by Frances on November 5, 2012
80. ## Math

Ha! Mom said if I could find help online to go for it so here I am asking for your help. Here is one problem she gave me from a page called Superstars. Mr. Jackson is preparing bags of treats to give trick or treaters. He has 48 pieces of candy and 60

asked by Emily on September 13, 2007
81. ## math

Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2.

82. ## Algebra

Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2.

83. ## Math

Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2.

asked by jai on April 18, 2016
84. ## physics

A flight attendant pulls her 74.2 N flight bag a distance of 324 m along a level airport floor at a constant velocity. The force she exerts is 37.9 N at an angle of 55.2 above the horizon- tal. a) Find the work she does on the flight bag. Answer in units

asked by scott on November 22, 2012
85. ## Chemistry

Write a procedure to demonstrate the effect of higher concentrations of HCl on its rate of reaction with antacid tablets. I have HCl with a concentration of 1.0 mol/L. This is what I have so far. Are my concentrations correct for this procedure? E is my

asked by Carolyn on May 22, 2013
86. ## Math

Use inverse operations to solve each equation. Explain each step and identify the property to reach step 19 = h/3 - 8 Solve the equation. Explain each step and identify the property used to reach step. 0.6x + 0.8 = 1.4

asked by chap on October 31, 2017
87. ## History

Why did the British Parliament create the English Bill of Rights? to establish rights for woman to end the tyranny of the court system to approve a pay raise for representatives the strengthen the rights of citizens D?

asked by malia on October 30, 2017
88. ## Biology

What type of cell in the central nervous system play an important role in the uptake and processing of neurotransmitters from synaptic clefts? neuron oligodendrocyte microglia endothelial cell ependymal cell

asked by Anonym on April 10, 2013
89. ## Physical Science

If no friction acts on a diver during a dive, then which of the following statements is true? A. The total mechanical energy of the system increases. B. Potential energy can be converted into kinetic energy but not vice versa. C. (KE+ PE)beginning = (KE +

asked by Danny on September 3, 2013
90. ## chemistry

When setting up an electroplating system, how do you set up the terminals of the voltage source to the anode and cathode? Does oxidation or reduction happen at the cathode? What does this require? Based on your answer, to which terminal of the battery

asked by Anonymous on April 27, 2012
91. ## SAT math

1. x^2 + 4x + 1 = 0 has how many solutions? 2? 2. What is the greatest common factor of the polynomial 8y + 2x^3 y^2 - 2y^3? 2y? 3. The product of powers rule states that for any number a, and integers q and p, (a^q)(a^p)=a^q+p True 4. True or False: The

asked by mysterychicken on May 31, 2013
92. ## History

Why did the British Parliament create the English Bill of Rights? to end the tyranny of the court system to approve a pay raise for representatives to strengthen the rights of citizens to establish rights for women i think it is C

asked by Alexander on August 27, 2018
93. ## Physics

Block B in the figure weighs 739 N. The coefficient of static friction between block and table is 0.34; angle θ is 26°; assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

asked by Daisy on March 1, 2016
94. ## physics

Two stars with masses 2.75 x 10^30 kg and 5.92 x 10^30 kg form a binary system. If the two stars have an average separation of 7.28×10^8 km, compute the magnitude of the gravitational force in Newtons between the stars. Express your result in scientific

asked by lizbeth on March 22, 2016
95. ## Biology

1. Sponges a. are nonsymmetrical and have oscula b. lack organization into tissues and organs but have specialized cells c. possess cells that are capable of recognizing other sponge cells and have a simple digestive system d. both a and b I'm so confused

asked by mysterychicken on March 8, 2010
96. ## HARD CHEM QUESTION

A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) 2H2(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: the reaction quotient initially.

asked by scilover on April 21, 2013
97. ## chemistry

If a 0.10 M solution of silver fluoride, AgF, is mixed with a 0.10 M solution of barium acetate, Ba(C2H3O2)2, a pecipitate (ppt.) forms: AgF + Ba(C2H3O2)2--> ppt. In order to identify the precipitating ions, you conduct some experimental tests. a) what is

asked by Colby on December 2, 2011
98. ## Art

During which time period were artists keenly interested in using the golden ratio in their paintings? A.Baroque Period B.Oriental Period C.Futuristic Period D.Renaissance Period When the Greeks built the Parthenon its dimensions nearly matched the golden

asked by Anon on March 2, 2015