# 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 229
1. ## Calculus (Antiderivatives)

What is the antiderivative of the followring expression? x^(-1/2) sin(2x^(-3/2)) After trying to figure out this problem, I have the suspicion that the antiderivative cannot be found using substition method, would this assumption be correct?

asked by Mishaka on February 11, 2012
2. ## science

A hypothesis is made in which stage of the scientific method? a) evidence is gathered b) the problem is presented c) a conclusion is made d) an explanation is thought of D

asked by pam on September 5, 2010
3. ## Cal 2

Use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the curves y=3/(1+x^2), y=0, x=0, and x=2 about the line x=4. Volume =

asked by Anonymous on February 12, 2016
4. ## calulus

The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

asked by cjones on May 4, 2012
5. ## Calculus

Consider the region bounded by the curves y=e^x, y=-e^x, and x=1. Use the method of cylindrical shells to find the volume of the solid obtained by rotating this region about the y-axis.

asked by John on October 11, 2010
6. ## algebra

method of substitution the perimeter of some traffic sigh must be 126 inches. Also its length is 11 inches longer than its width. Find the dimensions

asked by scott on March 29, 2012

Soi had to find out what inventory valuation method Cineplex uses for an assignment, but I searched their annual reports continuously and I cannot find an answer, does anyone know?

8. ## calculus

The volume of the solid obtained by rotating the region enclosed by y=1/x^4 y=0 x=2 x=4 about the line x=−5 can be computed the method of cylindrical shells via an integral The volume is V

asked by ayee on May 4, 2012
9. ## Chem

Is there any methods which could help me identify what ion is present in water? And also what is a filtration method that could remove the ion, i am aware of coffee and britta filter already

asked by Holfbrincl on January 16, 2017
10. ## calculus

The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

asked by ayee on May 4, 2012
11. ## SCIENCE

DESCRIBE THE METHOD pARAMECIUM USES TO ACQUIRE NUTRIENTS SUCH AS YEAST http://ebiomedia.com/gall/classics/Paramecium/paramecium2.html

asked by MATT on September 25, 2006
12. ## Social Studies

Why did the Pilgrims' government come about and why was its existence important. I know this has to do with the Mayflower Compact and was a formal method to establish systematic order among the Pilgrims but not sure why it came about and the importance.

asked by Tiffany on September 8, 2016
13. ## calculus

The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

asked by ayee on May 4, 2012
14. ## math

Below is a sequence an, for n = 0, 1, 2, ... n 0 1 2 3 4 5 6 7 8 9 an 25 25 19 25 61 145 295 529 865 1321 Use the method of finite differences to find a closed formula for this sequence.

asked by Ralph on February 8, 2015
15. ## Cal 1

Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equation. (Round your answer to four decimal places.) 1/3x^3 + 1/2x^2 + 1 = 0, x_1 = −3

asked by Dee on March 7, 2013
16. ## Physical Science

What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter? 1. filtration 2. distillation 3. straining 4. screening

asked by Austin on January 26, 2008
17. ## computer science

Create a method called countZeros, which takes an integer array as an input parameter and returns the number of zero entries in the array

asked by Brooke on March 21, 2011
18. ## math

Find the GCF of the numbers using an appropriate method. 84 and 126 Find the prime factorization of the number, and write it in exponent form. 198

asked by Anonymous on February 23, 2011
19. ## Chemistry

23.55 ml of the NaOH were added to partially neutralize a new 25.00 ml sample of the acid. The pH of the mixture was measured as 5.33. Calculate Ka for the acid, HA, using the partial neutralization method

asked by GeeGee on April 29, 2013
20. ## Math

Use the simplex method to find the maximum value of P = 3x + 3y subject to these constraints: 3x + 2y ≤ 360 x - y ≤ 60 y ≤ 120 x ≥ 0, y ≥ 0 What is the maximum value of P? What is the corner point which maximizes the profit? x = ? y = ?

asked by John on September 20, 2010
21. ## pre algebra 8

Michael wants to rent a car on his vacation. The rental fee is 60 dollars per day plus a refueling charge of \$40. He has at most 400.00 to spend. The inequality 60d +40

asked by mark on November 4, 2017
22. ## Math-Fractions

Solve the proportion. 5/x=9/x+8 Solve for x

asked by Anonymous on October 17, 2009
23. ## 11th grade

Use the following functions to solve. f(x) = x2 + x + 1; g(x) = 5 - 2x; h(x) = -x2 Solve f(g(-1))

asked by greg on October 20, 2010
24. ## Alegbra

15000 = (4/3)(pi)R^3 Solve for R. How do I solve for R

asked by Alazia on December 5, 2016
25. ## algebra

1. Solve (x+19)(x-11)(x+18)>0 2. Solve the equation 2x^2-x=-7

asked by Pinky P on December 31, 2011
26. ## college algebra

Solve equation |x+3|=|2-x| Not sure which way to go to solve. Thanks

asked by Anonymous on February 13, 2013
27. ## precalc

i also need help with these two questions: 1/r=1/r1 +1/r2 solve for r1 and: f= G(mM/r^2); solve for m

asked by rebecca on September 27, 2015
28. ## Math

solve: 4x^2 + 14x = 0 help me solve

asked by Allison on November 17, 2011
29. ## Math

Solve: -8x = 64 x = 512 x = 8 x = (-8) x = -56 Please help me solve this. Thank you!

asked by Sliverstream on April 19, 2019
30. ## solving for x

solve for x: ln(5-2x)=-3 e^[ln(5-2x))=e^-3 5-2x={1/(e^3)}----> Is this part right? Then I solve for x, right?

asked by apoorva on January 28, 2008
31. ## math

Solve for Matrix D 3 2 -5] [7 0 1 [2 0 8 + D = -4 3 -2] How to solve this?

asked by Joey on June 6, 2011
32. ## Algebra

Solve 3^2x+1 = 5(3^x) + 2 I would know how to solve it if it was only 3^2x+1, but now it seems more complicated.

asked by John on June 11, 2017
33. ## Albegra

How can I solve this problem: Solve for h B=hn

asked by PJ on October 10, 2008
34. ## algebra

Solve 8/y+4 = 7/y-7 y=84 did I solve this correctly?

asked by C on June 30, 2008
35. ## algebra

How would u solve D\d+2 - 2\2-d = d+6\ d^2-4 I got to D(d-2)(2-d) -2 (d+2)(d-2)=2d-d^2+12-6d How would you solve? Im confused

asked by michelle on March 21, 2010
36. ## algebra

1. Solve (x+19)(x-11)(x+18)>0 2. Solve the equation 2x^2-x=-7

asked by Pinky P on December 31, 2011
37. ## Math

how would i solve this? 2x+2y=12 would i solve for x or y? Im stuck!!

asked by Kayla on January 24, 2008
38. ## math

solve for the indicated varialbe a=1/2h(B+b) solve for b

asked by keauanna on December 8, 2007
39. ## algebra

Solve 8/y+4 = 7/y-7 y=84 did I solve this correctly?

asked by C on June 30, 2008
40. ## algebra

1. Solve (x+19)(x-11)(x+18)>0 2. Solve the equation 2x^2-x=-7

asked by Pinky P on December 31, 2011
41. ## Algebra

How do you solve for x in (3/4)x^2-12? I'm not sure how to factor this, unless there's another way to solve.

asked by Leyla on November 23, 2009
42. ## algebra2

solve the equation a-12/ac=2b solve for a

asked by hannah on September 20, 2013
43. ## Algebra

Solve q+12-2(q-22) > 0 Can I get help on how to solve this? I'm really stuck on it

asked by Lolli on October 29, 2018
44. ## algebra

how do i solve if h=(2f)/(m+1) and solve the equation for f

asked by Aline on May 22, 2014
45. ## college

can someone please help me solve the following problems Solve the following: 1. 2/7 - 1/3 = ? 2. 4/5 x 15/2 = ? 3. 2 1/2 ÷ 3/4 = ?

asked by sandra on January 7, 2009
46. ## Algebra

M = gw/g+w ... solve for w .... what's the steps I need to solve for w

asked by MARIAH on November 6, 2010
47. ## Advanced Algebra

How do I solve: how to solve 3x=4(4-2x)=11 and x-2y+4z=9 x=2z+2 y=-4z ? Thanks Need ASAP

asked by Theresa on November 11, 2014
48. ## Math 222

Please help me solve for m? F equal mv^2/r solve for m.

asked by Tika on April 26, 2015
49. ## Please Ms Sue Help me! Alhorithm

Solve for the value of x: 6log(x^2+1)-x=0. I can't even solve it.

asked by Jeconiah on April 13, 2013
50. ## Algebra

Solve the proportions. (Solve for x) 1. 3x/7 = 8/21 2. 20/10 = x+2/5

asked by Marnie on April 28, 2015
51. ## Math

Hi! Can someone solve these for me pls? Y=10/x y=1/2x+4 solve for x and y thanks

asked by Me on April 15, 2010
52. ## math

how do you solve for n? for example... 14=(1.4)^n how do you solve exp. ?

asked by anonymous on February 26, 2008
53. ## Algebra 1

Solve x + 4.5 = 7.3 How do I solve the equation?

asked by BJ on October 14, 2009
54. ## Math - Algebra

How to solve ;; x-y

asked by RIMA on September 21, 2010
55. ## Algebra

Help me with these two equations Solve for v 2v^2+4v-14=(v+1)^2 solve for y y^2+6y+8=0

asked by Mari on August 11, 2014
56. ## algebra

how would I solve for this L = 2πrh; solve for r.

asked by jennifer on October 11, 2016
57. ## Math

Solve this equation for x. ab+c/xy = 3d/4 How do you solve this? Please help.

asked by Lynn on November 3, 2016
58. ## Math

x/(x+1) - 2/(x-1)= 1 I have been trying to solve it but I do not know the steps to solve it.

asked by Jose on September 27, 2015
59. ## 3rd grade

Dean works with baby animals at a Zoo. This week he measured a giraffe, an ape and a tiger. The tiger had grown 4 inches less than the giraffe. The giraffe had grown twice as much as the ape. The baby ape had grown 6 inches since it was measured the last

asked by jay on October 24, 2009
60. ## schwann cells

are they found in central nervous system are they found in peripheral nervous system do they form a myelin sheath do they increase the speed of propagation of nervous impulses Thank you for using the Jiskha Homework Help Forum. Here is a site with the

asked by cynthia rygalski on November 26, 2006
61. ## Maths plz help

X^x+y^y=31 x+y=5 plz help i was told to use newton litrate method plz help

asked by Collins on December 18, 2015
62. ## math

underoot 2x square +3x + underoot 2 by alpha into beta method.

asked by rohit on May 3, 2012
63. ## algebra

how do u graph equations?? it says use the ggraphing method but i don't know how to graph them

asked by mee on January 30, 2011
64. ## calculus

how do you evauste the intergral intergral (2x^4-2x^3+6x^2-5x+1)/(x^3-x^2+x-1)dx using partial fractions method?

asked by Ann on August 6, 2008
65. ## Calculus

What is the antiderivative of this? What is the antiderivative of x/((16+x^2)^(1/2))? (x / the square root of (16 + x^2))? What method did you use? Substitution, etc..? Thanks!

asked by Michelle on March 4, 2009
66. ## math

is this right Find the LCM for the given numbers by an appropriate method. 24, 54, and 27 the lcm=216

asked by chandice on July 20, 2009
67. ## world history

what method of warfair did the french use during the french and indian war

asked by makaela on February 1, 2010
68. ## science

Is the scientific inquiry steps the same as the scienific method steps?

asked by patiance on January 21, 2012
69. ## Health

What is the water testing method like in Canada? Plus, I'd like to know the water standards.

asked by AL 92 on June 1, 2010
70. ## Algebra

in that equation I have to solve for x. 5. x^3 + 2x^2 - 9x = 18 in this word problem i have to solve my factoring. 8. Suppose the altitude of a rising hot-air balloon is given by h = 0.04 t2 + 2t, where “t” is the time in seconds after the balloon

asked by Jordan on March 9, 2009
71. ## algebra

The shorter side of a triangle is 5 inches less than the medium size side. The larger side is 12 inches more than the medium size side. If the perimeter of the triangle is 40 inches, find the size of each side of the triangle. Show your work

asked by Agnes on December 16, 2009
72. ## improving your writing

Please let me know what you think. It's for an exam. Thank you For the past three months, work-related problems have occurred in the office and need to be addressed. Before Jessica Hilo’s medical leave, the workload was equally divided. There were no

asked by jacqui on April 6, 2011
73. ## college phsyics

You push your physics book 1.50 m along a horizontal tabletop with a horizontal force of 2.40N. The opposing force of friction is 0.60N. a) how much work does your 2.40N force do on the book? b) what is the work done on the book by the friction force? c)

asked by frances on February 12, 2010
74. ## Honors Chemistry

If 20 mL of 0.01 M aqueous HCl is required to neutralize 30 mL of an aqueous solution of NaOH, determine the molarity of the NaOH solution. ==> I got 0.01 M NaOH as my answer. Is this correct?

asked by Emily on February 23, 2010
75. ## Science

0.02 mole of urea is dissolved in 250ml of solution. if density of solution is 1.10 g/ml . calculate percentage weight by weight and percentage weight by volume ?

asked by Awadhesh kumar on June 28, 2015
76. ## chemistry

A 0.1 M solution of acetic acid is titrated with 0.05M solution of NaOH. What is the pH when 60% of the acid has been neutralized? The equilibrium constant (Ka) for acetic acid is 1.8x10^-5

asked by eric on July 24, 2010
77. ## chemistry

A saturated solution is prepared by dissolving 3.2 g of a salt in 9.10 g of water to yield a saturated solution. What is the solubility of the salt (in g salt/100g of H2O)?

asked by Riley on March 18, 2012
78. ## Chemistry

You start with 2.5L of a KNO3 stock solution and wish to prepare 10.0 L of 1.5 M KNO3. What percentage (m/v) would the potassium nitrate stock solution need to be if you were to use it all? (MW of KNO3: 101g/mole)

asked by sarah on February 9, 2017
79. ## math (?)

5x-4y=24 4y-5x=-24 what is the solution of the systme of equations? ( i guess no solution) is the sytem consistant or inconsistant? (i guess consistant) is it dependent or independent (i guess dependen)

asked by scooby9132002 on July 1, 2009
80. ## Psychology/Science

Ms.Sue you helped me with the pictures of neurons yesterday. Thank you, I finally found some really good ones for my power point presentation. My assignment is to create a lesson plan for a sixth grade science class explaining what a neuron is and how it

asked by Christian on October 18, 2007
81. ## chemistry

Indicate whether each solution is acidic, basic, or neutral. a. [H3O+] = 6.9 x 10-1 M This solution is acidic. b. [H3O+] = 8.2 x 10-13 M This solution is basic. c. [H3O+] = 3.2 x 10-1 M This solution is acidic.

asked by krystal on February 27, 2012
82. ## Chemistry - van't Hoff factor

The freezing point of a salt and water mixture is -0.58 C. The freezing point of an unknown ionic solution (0.100 m) is -1.04 C. 1. Determine the freezing point depression for the ionic solution. 2. How do you determine the van't Hoff factor for the ionic

asked by Ally on September 13, 2017
83. ## math

Suppose you are managing 16 employees, and you need to form three teams to work on different projects. Assume that all employees will work on a team, and that each employee has the same qualifications/skills so that everyone has the same probability of

asked by bballer on September 26, 2012
84. ## PHYSICS HELP ASAP

a 3 kg block slides down a frictionless plane inclined 20 degrees to the horizontal. If the length of the plane's surface is 1.50m, how much work is done, and by what force? suppose the coefficient of kinetic friction between the block and the plane. What

asked by mandy on January 10, 2011
85. ## physics

A 1.5 kg book is lying on a 0.70 m -high table. You pick it up and place it on a bookshelf 2.0 m above the floor. During this process, how much work does gravity do on the book? -> 1.5 * -9.8 * 1.3 = -19.1 J During this process, how much work does your

asked by Anonymous on March 1, 2016
86. ## Algebra

A dog trainer has 64 ft of fencing that will be used to create a rectangular work area for dogs. If the trainer wants to enclose an area of 192 ft2, what will be the dimensions of the work area?

asked by Kara on November 12, 2012
87. ## finance

a financial mgr is considering operating a lock box. she forecast that 400 payments a day will be made to the lockbox with the average payment being \$2,000. the banks charge for operating the lockbox is .40 cents per check. the interest rate is .025 per

asked by John on October 13, 2006
88. ## accounting

Your client is preparing financial statements to show the bank. You know that he has incurred a computer repair expense during the month, but you see no such expense on the books. When you question the client, he tells you that he has not received the

asked by desparate on August 15, 2007
89. ## Math

The perimeter os a tennis court is 228 feet and the lenght is 42 feet longer than the width. Write a linear system. Let w be the width of the tennis court and let l be the lenght of the tennis court. Graph the linear system.

asked by Mary on March 1, 2011
90. ## physics

A system has three masses, a 10kg mass is lying on a level surface and is connected on the left to a 6kg mass by a cord passing over a massless,frictionless pulley.And on the right, it is connected to a 9kg mass by a cord also passing over a

asked by christonne on August 18, 2014
91. ## modern algebra

I have two questions... I would really appreciate some help... 1) Suppose phi is a homomorphism from G to G' and that G' has an element of order 8. Prove that G has an element of order 8. (I can show that G has an element g^8 that maps to the identity in

asked by daniel on February 27, 2008
92. ## Physics

A shot putter puts a shot (weight=70.3N) that leaveshis hand at distance of 1.51m above the ground. (a) Find the work done by the gravitatiob force when the shot has risen to a height of 2.10m above the ground. include the correct sign for work. (b)

asked by Cavin on February 26, 2007
93. ## Chemsitry

Hello. I'm not n=sure about these answers so i was wondering if someone could check them out? 27, A: Which is a stronger acid - sulfuric or carbonic acid? (Answer: Sulfuric acid.) 27, B: Imagine you have two glasses. One contains a solution of carbonic

asked by CRCAWF on May 11, 2009

Distruive interference? Unless you put C in the line between A and B, this the asnwer is at infinity. Now on the line between A and B, the distance from A to C has to be an odd multiple of halfwavelength greater than C to B. Now, the distance between the

asked by Papito on May 4, 2007
95. ## Math

If you could check these I would be very greatful. Thank you! which of the following could be represented by -8? A. a drop of 8 meters *** B. 8 T-shirts C. sea level in 8 places of the world D. 8 degrees C above zero compare, use . 5+(-4) ____ 14+(-7) A. =

asked by erinnn on May 23, 2019
96. ## physics

A 85 kg rock climber first climbs 50 m up to the top of a quarry, then descends 75 m from the top to the bottom of the quarry. If the initial height is the reference level, find the potential energy of the system (the climber plus Earth) when the climber

asked by Merlin on May 11, 2011
97. ## Chemistry

Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or

asked by Alex on September 9, 2015
98. ## chemistry

The material Magnesium Sulfate What mass of dry material would be needed to make an aqueous solution with a molality of 4 moles/kg solution ? What mass of water is needed? 4 (24.305+ 32.065+ (4 x 15.999)) =481.5 ?Not sure where to go from here or if the

asked by Naomi on January 17, 2018
99. ## AP Chemistry

The Ksp of Ni(CN)2 is 3.0 × 10−23. What is the molar solubility of Ni(CN)2 in a 0.065 M KCN solution? Answer in units of mol/L. I found that the normal molar solubility is 1.957x10^-8, but I don't know how the KCN solution affects it. Sig figs aren't

asked by Q on January 20, 2015
100. ## Chem

Use a chemical equation to help explain why the pH of an aqueous solution changes after HCl solution has been added This is what I got HCL + H2O = H30+ plus CL- Hope that makes since (those are a positive and negative signs at the right side of the

asked by meghan on April 5, 2013