# 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 370
1. ## Ggss

in a single throw fair die what is probability that an odd number or perfect square greater then one show up

asked by sadiya umar on December 14, 2015
2. ## calculus

An automobile travels 4 miles road in 5 minutes. Use the Mean Value theorem to show that the speedometer reads exactly 48 mph at least once during the trip.

asked by smith lionel on January 13, 2012
3. ## chem

what is the net ionic equation of tin and potassium carbonate: Sn(s) + K2CO3(aq) --> K(s) + SnCO3(aq) show the steps plss

asked by emma on May 21, 2015
4. ## Physics

if light touching a surface has an intensity of about 1000W/m^2, how many numbers of photons per m^2 per sec does this show? wavelength of P=600nm

asked by Emma on May 28, 2009
5. ## science

Describe how you would investigate effect of ph on enzymes rate. Draw a labelled diagram to show how you carried out the experiment

asked by donald on January 1, 2017
6. ## microbiology

Show and explain the vertical displacement of a particle, a distance from the origin for a wave travelling from negative direction.

asked by tera on January 16, 2014
7. ## math

in a single throw fair die what is probability that an odd number or perfect square greater then one show up

asked by hussaini gumel on December 14, 2015
8. ## calculus

Let f(x) = [(2x2+4 x −70)/(x−5)] Show that f(x) has a removable discontinuity at x=5 and determine what value for f(5) would make f(x) continuous at x=5 Must define f(5)= I've been stuck on this problem for some time how would i do this one? Ty!

asked by Aric on February 7, 2011
9. ## English

in what way does Tom buchanan from chapter 1 and 2 of "the great gatsby" show moral and spiritual decline of the upper class??

asked by Sabrina on October 10, 2010
10. ## English

In the Tale of Two Cities question. Besides the foreshadowing of the blood bath to come, what does the people's response to the spilled wine show us?

asked by kayla on September 14, 2012
11. ## Chemistry-Help

The pressure of gas is measured at 550 mm Hg. How do you calculate this to Torr, lb/in2, atm, and in Hg? Please show conversions so that I can understand? Thank you!

asked by AL on May 8, 2012
12. ## Health

What reason do studies show why more people with high blood pressure and diabetes live in the suburbs then in the city

asked by Besty jadper on February 16, 2019
13. ## maths

find equations for the tangent and the normal at P (1n2, 2k) on the curve with equation y=ke^x, where k is a constant. (b) given that y=sin^-1x, show that (1-x^2)d^2y/dx^2-xdy/dx=0

asked by skangele on October 3, 2013
14. ## Calculus Help

Let c and dd be positive real numbers. Show that regardless of c,d, the parabolas r=c/(1+cos(theta)) and r=d/{(1-costheta) intersect at rights angles

asked by Sarah on December 3, 2010
15. ## Chemistry

Write out a balanced chemical equation to show the dissociation reaction of magnesium carbonate in distilled water

asked by Lisa on September 12, 2017
16. ## math

x/3+2=x/6 In solving this problem do I divide 3 from both sides are what. I am a bit lost. please show me the steps so I can see if I am right or wrong in my calculations. Thanks you in advance.

asked by jessica on August 27, 2010
17. ## Math

Suppose A and B are events with P(A)=1/6, P(B)=5/6 and P(A and B)=1/12. Find each of the following a. P(AorB)= Formula: P(A)+P(B)-P(A&B) 1/6+5/6-1/12=11/12 b. P(not A) 1-1/6=5/6 c.P(not B)= 1-1/12=11/12 I am lost here can please correct any mistakes I did

asked by Keonn'a on October 9, 2018
18. ## chemistry

0.5mols of a mono alkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

asked by EMMANUEL on October 12, 2016
19. ## college physics

Show that 480W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2m in a time interval of 1.5s.

asked by bbragg on October 17, 2013
20. ## calculus

Find the domain and range of the given functions. 1. h(x)= (squareroot4x+1)+3x-5 2. f(x)=3cos(x/3)-1 3. g(x)= log (x+2) Can someone show me the steps to figure the above problems?

asked by Janet on February 12, 2011
21. ## Advanced Biology

Describe how the Principle of Segregation is show in th dihybrid cross of rabbits. I think it would be that each character separates into a different sex cell.

asked by Jennifer on December 2, 2009
22. ## English

Show apostrophes The moons rays shone feebly on the path, and I heard the insects chirpings and whistlings.

asked by Jared taylor on December 1, 2015
23. ## aacolsn

in a single throw fair die what is probability that an odd number or perfect square greater then one show up?

asked by hussaini gumel on December 14, 2015
24. ## CHEM

H2Te CH3CHO CH3CN H2Se polar or nonpolar? Also, anyone know any sites that show pics of the shape of molecules?

asked by RICHY on September 20, 2010
25. ## 0.5mols of a monoalkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

0.5mols of a mono alkanoicacid weighs 44 grams, determine the molecular formula and name the acid. (show the workings)

asked by EMMANUEL on October 12, 2016
26. ## Marya

Ali has a smooth convex utility function. He is optimizing. The price of x changes, and it has no effect on his consumption of y. Is this possible? Show in diagram why or why not.

asked by Daniel on October 9, 2016
27. ## organic chemistry

Show the reaction equation and mechanisms of a mixture of napthalene,p-nitroaniline and benzoic acid dissolved in dichloromethane?

asked by Agnes on December 2, 2010
28. ## physics

Give two examples to show how physics help in understanding the concept of evolution, biological systems of living organisms.

asked by simran on June 10, 2016
29. ## Math, Intergration

C(T)=0.78125-0.5e^(-0.64T) (T+1.5625) Using this equation, I don't understand 'Intergration by parts' to show this and what it means Any help is appreciated!

asked by Amy L on March 21, 2015
30. ## physics

How do the laws of physics apply to others sciences such as biology chemistry and earth science? And give an example to show the connection.

asked by nulloa on September 6, 2016
31. ## chemistry

Please show me how to calculate the number of moles in 8.45 x10 to 21st power formula units of calcium chloride?

asked by Bev on January 30, 2011
32. ## English

Absurdism is the attempt to show the ________ of the human condition. silliness seriousness uniqueness hopelessness my answer is the last one

asked by Steve on March 19, 2017
33. ## math

Write the slope-intercept (y = mx + b) form of the equation from the information given. The line goes through the points (1/2, 3/2) and (-1/4, 5/4) I really don't know how to do this problem, can someone please show me how?

asked by Abby on October 26, 2015
34. ## organic chemistry

Show the reaction equation and mechanisms of a mixture of napthalene,p-nitroaniline and benzoic acid dissolved in dichloromethane?

asked by Agnes on December 2, 2010
35. ## maths curve need help

If the area between the curves y=√x and y=x^3 is rotated completely about the x-axis,find the volum of the solid made? Please show step

asked by putayoto on March 6, 2017
36. ## chemistry

How many grams of Mg(OH)2 are needed to neutralize 55 ml of 0.25 M HCl . according to the following reaction. (show all calculations for credit) Mg(OH)2 (aq) + 2HCl(aq) --- MgCl2 (aq) + 2H2O(l)

asked by Cory on March 20, 2013
37. ## phy

. Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by merle on February 17, 2013
38. ## series

find the nth term awmd partail sum of the harmonic series below 1/3+1/8+1/15+1/12+..........show working plz

asked by help on March 19, 2016
39. ## chemistry

show by calculation of z the behavior of (.25 mole) gas sample at the following conditions (ideal or real)at temperature 100c 1-p=0.25 v=12

asked by kamal on June 3, 2016
40. ## Math

A general point on a curve is P(3+4costheta,2+4sintheta). Show that the locus of P is a circle and find the centre and radius

asked by Jennifer on April 25, 2017
41. ## Math

We spin a roulette wheel 720 times. Find the following expectations: # of greens # of reds # of spins that show 7, 14, 21, or 28

asked by William Marand on March 28, 2019
42. ## math

a c-shaped tile (2 in the top row, 1 on the second, 2 on the bottom) can be placed on a number chart so that the sum of the numbers covered is 29. show how this can be done

asked by nour on June 12, 2012
43. ## Economic

suppose now the inputs of mangoes are taxed. draw the graph to show the economic effects if demand is elastic

asked by lavinia on May 3, 2011
44. ## Chemistry

. Show a chemical reaction by which hardness is added to water that also explains the formation of caves in limestone formations?

asked by Lee on October 6, 2015
45. ## analytic geometry

for all parabolas, show that the angle between the line segment joining endpoints of the latus rectum to the vertex is 2 arctan 2

asked by judith on September 26, 2015
46. ## Calculus

Let f(t) be an odd function Using properties of the deﬁnite integral plus simple substitution show that if f is continuous on [−a, a] for a positive number a, then Z a −a f(t) dt = 0

asked by Rory on December 4, 2011
47. ## Physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

asked by Chantrell on August 4, 2013
48. ## Language Arts

To help establish coherence is a compare and contrast essay, which of the following transitions would best show a comparison between ideas? A. however B. likewise C. further D. for example Is the answer D?

asked by Callie on November 11, 2014
49. ## Calculus I

Show that the equation x^4 + 4x + c = 0 has at most two real roots. I believe we're supposed to prove this by proof of contradiction using Rolle's Theorem, but I'm not quite sure how to do this problem.

asked by Emily on March 5, 2012
50. ## math

Hello, Is log_3 (5) equal to log_5 (3)? Explain your answer. Do not evaluate the logarithms. is my question. What is a surefire way to show this is false.

asked by Adam on March 20, 2013
51. ## math

find the length of the longest diagonal through a cuboid of sides 4cm by 13cm by 16cm. please show working

asked by Anonymous on December 9, 2016
52. ## Chemistry

Why will a reaction that forms a very weak electrolyte not form an equilibrium reaction? Your preface is questionable. Do you have an example of one? All the weak electrolytes I can think of form in solution an equilibrium reaction. No the question did not

asked by Chrissy on April 12, 2007
53. ## Physics

A heat engine has the three step cycle shown above. Starting from point A, 1 L (liter) of ideal gas expands in the isobaric (constant pressure) process A to B at P = 2 atm. B to C is isovolumetric process at V = 5 L, and C to A is an isothermal (constant

asked by Jason on May 7, 2010
54. ## chemistry

I have solved the following question but i am not sure whether it is right or wrong.. Calculate the molar heat of reaction for the NaOH(aq) using the data obtained from this experiment. (this is a neutralization question) H2so4 Volume= 30ml

asked by Marium on June 3, 2010
55. ## physics

Mere and Ruth investigated the relationship between the applied force, F, and the extension, x of a spring. The results they obtained are shown in the table below. Force, F (N) Extension, x (m) 0.0 0.0 2.0 0.033 4.0 0.066 6.0 0.099 8.0 0.132 10.0 0.165

asked by Kate on October 17, 2007
56. ## dt, textiles (sewing machine)

Question 1. what is the stitch length and width for the following stitches? straight stitch length:....? width:....? zig zag stitch length:....? width:....? question 2. tension what will happen to my work if the sewing machine stitch is too loose? what

asked by me on October 9, 2007
57. ## Programming

I need to write a code in java based on an alrgorithm, the alrgorithm and it’s problem are below: The Sieve of Eratosthenes is “a simple, ancient algorithm for finding all prime numbers up to any given limit,” which you can read about at: (Wikipedia:

asked by Mr. Anonymous on March 10, 2019
58. ## chemistry

Suppose 70.00 mL of a lithium hydroxide, LiOH, solution requires 55.42 mL of a 0.1050 M solution of propanoic acid, C2H5COOH, for neutralization. LiOH + C2H5COOH ® C2H5COOLi + H2O What is the concentration of the base solution? 0.08313 M 0.1663 M 0.3325 M

asked by hope on October 9, 2010
59. ## chemistry

use the following data, as appropriate, to estimate the molarity of a saturated aqueous solution of Sr(IO3)2. Molarity of a saturated aqueous solution of Sr(IO3)2 Sr(IO3)2(s) delt h kJ/mol=-1019.2 delta G kJ/mol=-855.1 delta S= 234 J mol-1K-1 Sr^2+(aq)

asked by Allyx3 on December 2, 2012
60. ## chemistry

use the following data, as appropriate, to estimate the molarity of a saturated aqueous solution of Sr(IO3)2. Molarity of a saturated aqueous solution of Sr(IO3)2 Sr(IO3)2(s) delt h kJ/mol=-1019.2 delta G kJ/mol=-855.1 delta S= 234 J mol-1K-1 Sr^2+(aq)

asked by Allyx3 on December 2, 2012
61. ## Pharmacy math

calculate the ordered medication for each of the following IV bags to achieve the ordered concentration Ordered: Add 30 mEq KCl per L of IV fluid. On hand: 360 mL IV solution. On hand is KCl 2 mEq / mL Add: ______mEq; ___ mL Ordered: Add 20 mEq KCl per L

asked by Grace on July 11, 2010
62. ## language help !

DAD: Where’s the water now? MOM: As high as the car’s wheels. DAD: We’d better go. MOM: We can’t. The car’s dead. DAD: What? MOM: The water is up to the engine; it won’t start. TINA: Oh, no! MARK: What can we do? DAD: I don’t know. (He looks

asked by kelsey on May 20, 2014
63. ## Re: Physics/Math

A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to

asked by Technoboi11 on March 2, 2007
64. ## Pre-Algebra

Here's the instructions for my portfolio: 1. Choose two animals with different speeds. You can choose fro m the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in which the two animals have an equal

asked by TotallyLost on May 3, 2017
65. ## Advanced Economics

Advanced economics question(Keynes),HELP PLEASE? 1. except for the discovery of the changes in price level, what causes the equilibrium in Long run labour market,compared with the less sensitive adjustment of demand and supply in shortd in LR? run labour

asked by John on February 1, 2009
66. ## statistics

Suppose we want to estimate the average number of purchases in a given hour in a local convenience store. Using this example describe in your own words how you would go about determining this average through: A.) Drawing a random sample: Drawing a random

asked by slomo on February 8, 2015
67. ## AP Chemistry

This is the question I am having trouble with: A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode.

asked by Sarah on April 20, 2015
68. ## Math

Use the Hamilton method of Apportionment to make the assignment. In a recent census, Iowa's population in thousands was 4,503, Illinois' was 8,220, and Indiana's was 5,300. Allocate 31 members of the U.S. House of representatives to these three states.

asked by Catherine on March 27, 2017
69. ## Math

Use the Hamilton method of Apportionment to make the assignment. In a recent census, Iowa's population in thousands was 4,503, Illinois' was 8,220, and Indiana's was 5,300. Allocate 31 members of the U.S. House of representatives to these three states.

asked by Catherine on March 26, 2017
70. ## Physics

A 2.5-kg block is sliding along a rough horizontal surface and collides with a horizontal spring whose spring constant is 320 N/m. Unstretched, the spring is 20.0 cm long. The block causes the spring to compress to a length of 12.5 cm as the block

asked by Drew on May 30, 2014
71. ## maths

A two digit number is k times the sum of the digit. By interchanging the digits, Find the number is how many times its sum of the digits. Explain method

asked by sanjay on February 28, 2017
72. ## math

Information related to Hermesch Company for 2011 is summarized below. Total credit sales \$2,200,000 Accounts receivable at December 31 825,000 Bad debts written off 33,000 What amount of bad debts expense will Hermesch Company report if it uses the direct

asked by vivian on November 1, 2010
73. ## Melting point

Do you have any idea what the melting points and range might be for a 50/50 mixture of: 1. Benzoin (M.P.: 135-136) and succinimide M.P.: 121-123 and 2. Benzoic acid M.P.: 121-122 and succinimide M.P.: 122-124 I'm doing a lab with really laughable melting

asked by Sheryl on October 1, 2006
74. ## Chemistry (organic)

You have a solution that contains 5.0 g of oxalic acid dissolved in 150 mL of water. This solution is placed in a separatory funnel, and then 100 mL of diethyl either is added to the separatory funnel and an extraction is performed (diethyl ether and water

asked by Brendon on March 3, 2015
75. ## Chemistry

A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3-mg sample of the compound was analyzed for nitrogen by the Dumas method, giving

asked by Darrel on November 20, 2012
76. ## Precalc/Trig

Sorry there are quite a few problems, but I just need to know if these are correct (and if they aren't, where I went wrong): 1. Solve these equations. tanθ = -√3 θ = 2π/3 + kπ θ = 5π/3 + kπ 2. secθ = √2 θ = π/4 + 2kπ θ = 7π/4 + 2kπ 3.

asked by Heather on November 11, 2014
77. ## physics

Question 01: 2.0g of Nitrogen gas is at 270C in a fixed volume. If 20% of its total internal energy is due to rotation what is the average velocity of nitrogen molecules? What will be the temperature 2.0 g of Helium gas in a fixed volume if the average

asked by hash on February 12, 2017
78. ## Physics

A man stands on the roof of a 15m tall building and throws a rock with a velocity of magnitude 30m/s at an angle of 33deg above the horizontal. Ignore air resistance. Calculate: a) the maximum heigh above the roof reached by the rock b) the magnitude of

asked by Kyle on September 27, 2011
79. ## math

: Cost of machine \$ 90,400 Residual value \$ 3,400 Useful life 5 years Estimated units machine will produce 100,000 Actual production: Year 1 Year 2 54,000 11,500 Use MACRS table. Depreciation Expense Method Year 1 Year 2 what is the Units of production

asked by Anonymous on January 29, 2014
80. ## Writing

Please help! 1) Using a single formatting _____ helps to make reading researched information easier;it lets the reader know what to expect. A. Citation B. Text C. Style D. Website My answer was B I got it wrong 2) when creating a writing plan,which of the

81. ## math

can someone write out the equations so i can solve it. Please... #1 A biologist recorded 9 snakes on 21 acres in one area and 13 snakes on 47 acres in another area. Let y be the number of snakes in x acres. Write this one in a linear equation for the

asked by jas on June 3, 2007
82. ## Thermodynamics

Hi, I am trying to do a prelab and I am really stuck... I have no idea how to go about this, I don't knwo if its worded funny or waht, so any help would be greatly apprecaited. The question is: (This is for a bomb calorimeter of constant volume) Benzoic

asked by Tracy on October 3, 2007
83. ## French #2

Can someone please check my work? Last Saturday different people did different things. Explain what each one did by completing the sentences with the appropriate "passé composé" forms of the verbs in the list. Be logical. acheter assister ranger laver

asked by Larry on May 12, 2009
84. ## STATISTICS

A manufacturer has received complaints that aging production equipment is forcing workers to work overtime in order to meet production quotas. Historically, the average hours worked per week at the company is normally distributed, with a mean of 40 hours

asked by KENYAN on May 6, 2012
85. ## mathamatics

can i have a list of times tables And your question is? 1> Googal stands for how many zeros after one? 2> Who invented logarithm for fast calculation? what is the product of 9 & 6? How could I work a problem that is: I have a bacteria that replicates every

asked by jake on August 31, 2005
86. ## Math confused

Amy is the owner of The Candle Shop she uses the FIFO method for inventory pricing, what is the dollar value of the ending inventory if there were 17,000 units on hand Dec 31 ok this is what I have so Jan 1 5,000 @ \$0.89 Feb15 10,000 @ \$0 69 April 15 2,000

asked by really stuck on May 22, 2008
87. ## Calculus

Suppose that 5 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 36 cm. (a) How much work is needed to stretch the spring from 32 cm to 34 cm? (Round your answer to two decimal places.) (b) How far beyond its natural

asked by Kaitlyn on January 23, 2016
88. ## Physics Urgent!!!!! I really need help with this

Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be

asked by Abi on May 2, 2011
89. ## Math

how to solve this po? 4(4x)^2 + 2(4x) + 5 I hope you can answer this for me. and thank you very much. :)

asked by Michelle on July 29, 2016
90. ## ALG 2

|X-8|is greater than but equal to 3...solve

asked by tyneisha on September 26, 2012
91. ## Math

Solve 24,000X0.04X30years=

asked by Judy on April 23, 2017
92. ## college calculus

how do i solve sin(x)+2cos(2x)=0

asked by Anonymous on February 29, 2012
93. ## Algebra II

Solve for X to three significant digits. 9^(2x)=11^(3x-2)

asked by Arielle on November 8, 2011
94. ## Math

4x+3y=5 x-3y=5 solve by linear equations

asked by LaSalle on March 17, 2009
95. ## algebra

solve the following systems of equations , x+2y=9,x=5-2y

asked by Anonymous on June 9, 2010
96. ## Math

Solve using metal math. a) 4y+3=19 b) 2+3m=17

asked by Jack on October 26, 2017
97. ## Algebra 2

Solve each inequality. 0.75b < 3

asked by Michaela on August 18, 2012

how can I solve the equation t=13 x 1 fifth? what would the total be?

asked by Mathilde on September 27, 2007
99. ## Math

solve equation: 2/3x + 1/2 = 3/5x - 5/6 explaine how you get 20

asked by jeannie on September 27, 2007
100. ## geometry

3x + y + 7 + 90 = 180 deg. how to solve?

asked by john on February 13, 2012