# 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 207
1. ## military , math

the emergency water storage capability your squad set up now holds 7,000 cubic feet of water. YOur commander has asked to fill it up. You estimate that a facility will hold 8,478 cubic feet. HOw many gallons are required to fill the facility? 11,055 74,470

asked by jake123 on April 5, 2007
2. ## maths

five bales of hay are weighted two at a time in all possible combinations. the weights, in kilogrames, are: 110,12,113,114,115,116,117,118,120 and 121 what is the weight, in kilograms, of the heaviest bale? can someone please show me how to do this

asked by Emma on July 6, 2007
3. ## Algebra

Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certificates are given to students whose scores are in the top 2% of those who took the test. This means that they scored better than

asked by Sally on June 9, 2016
4. ## Maths

Test the solution of an equation: Prove that x=5 is a solution of the equation: 3x-3=2x+2 LHS= RHS= LHS=RHS,ie x=5 is the solution.

asked by Dian on November 2, 2016
5. ## Chemistry

In a laboratory, a student studies the absorption and transmission of light in order to analyze copper in brass and determine its percentage within the brass sample. He determines the amount of light absorbed by a sample by measuring the amount of light

asked by Jessica on April 1, 2009

A 0.21g sample of sulfuric acid is dissolved completely in sufficient water to make 0.25 litre of final solution. Calculate the hydrogen ion concentration in mol1-1 in this solution and show successive steps in the calculation: If 0.21g in 0.25l then 0.84g

asked by Hol on March 9, 2007
7. ## Physics

Ok, my Physics professor gave us this to do uncertainty propagation with these equations. Can some please show me some examples on each of these so I know I'm doing them right? Uncertainty Propagation Since raw data includes uncertainty, all calculations

asked by Michele on August 1, 2017
8. ## health care

can anyone tellme how Collegial Model management structures affect day to day work in a organization? Well, tyrants don't exist, and if they come in and start bossing, they are in for a surprise: The collegial model depends on all the employees accepting

asked by jean on June 24, 2007

A gas, while expanding under isobaric conditions, does 660 J of work. The pressure of the gas is 1.40 x 105 Pa, and its initial volume is 1.70 x 10-3 m3. What is the final volume of the gas? Would I multiply the two values? W = p*dV = p(Vf - Vi)--for

asked by Hannah on June 22, 2012
10. ## chemistry (continued)

i kinda understand waht you're saying. to be a bit more clear this is from a lab, and here are the volumes we retrieved: Volume of Concentrated NaOH soultion (mL) = 9.00 mL Concentration of Concentrated NaOH soultuon (M) = 6.00 M Volume of Stock Solution

asked by Vanessa on October 31, 2008
11. ## physics, mit 2.01x, mechanical engineering

MITx 2.091x Can anyone help me on this question: HW9_3: Design against buckling in a SD truss We are considering again the truss in the figure, from homework problem HW4_2. The truss is loaded at joint C as indicated, and we had determined the axial forces

asked by yo yo on August 15, 2014

13. A baseball bat and 8 baseballs cost \$163.25. The bat costs \$106.45. What is the cost c of one baseball? (1 point) 163.25 – 8c = 106.45; \$33.71 8c + 106.45 = 163.25; \$7.10 8c + 163.25 = 106.45; \$7.10 8c – 106.45 = 163.25; \$33.71 14. Mark weighs 74

asked by Delilah on January 2, 2013
13. ## Physics

You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 770 N and that of your belongings is 1040 N. Determine the work done by the elevator in lifting you and your belongings up to the 6th floor (15.2 m) at a

asked by BrookeNeed on October 11, 2016
14. ## chemistry

A student tipped the watch glass and spilled the solution containing organic component X. Use the data given below to estimate the percent of organic solid X in the sample. Mass of sample 0.6084g Mass of water soluble component, Y 0.1565g Mass of insoluble

asked by Vanilla on April 9, 2012
15. ## Chemistry

What mass of calcium citrate, Ca3(C6 H5 O7)2, would a tablet manufacturer need to use to provide the same amount of Ca that you found in your tablet? (show calculations) The mass of Calcium for the experiment was .7374g We assumed that any solid that

asked by Chris on October 17, 2016
16. ## Chemistry

Determine if the solubility would increase, decrease, or stay the same: 1) A saturated solution of sugar water is cooled from room temp to 0 degrees Celsius. 2) A solution of ocean water with dissolved oxygen is heated from 10 degrees Celsius to 15 degrees

asked by Margaret on February 19, 2013
17. ## Statstics

Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week (round

asked by Chris on September 9, 2014
18. ## Statistics

Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week (round

asked by Chris on September 8, 2014
19. ## Algebra

How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will

asked by Anonymous on May 26, 2008
20. ## algebra

How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will

asked by Anonymous on May 21, 2008
21. ## algebra

making linear equation from word problem At low altitudes, the altitude of a parachute and time in the air are linearly related. A jump at 2,880 ft use the US army T-10 parachute system last 120 sec. (A) find a linear model relating altitude a (in feet)

asked by mary on September 26, 2012
22. ## Chemistry

If your solution’s final volume of 32.55 mL yields 3.6 grams of AgCl, determine the Molarity of the final solution. Also, how many milliliters of a 1.85 M solution of AgNO3 did you add to an excess of aqueous NaCl to provide the 3.6 grams of AgCl?

asked by Shoba on March 26, 2013
23. ## Math

the green bay packers ordered roast beef subs and turkey subs for lunch. a total of 53 subs were ordered. the number of roast beef subs ordered is 2 more than twice the number of turkey subs. write and solve a system of linear equations to determine how

asked by Chris on February 16, 2012
24. ## physics

A 60 kg student does 60 push ups in 40s . With each push up , the student must lift 70% of the body mass a height of 40cm off the floor. Assuming two significant digits, calculate the following The work the student does against a force of gravity for each

asked by Melissa on April 25, 2012
25. ## Algebra 2

Approximate to the nearest tenth the positive real zeroes of f(x)=x^2+1. I got .6 Solve over the set of complex numbers. x^4-13x^2+36=0 i got -3,-2,2,3 but i don't know if i even did it right. Solve x^2+4x9=0 by completing the square. I don't even know

asked by Amanda on February 4, 2008
26. ## ap

For an electrochemical reduction process, electrons are 1. taken from solution species at the surface of the cathode. 2. added to solution species at the surface of the anode. 3. added to solution species at the surface of the cathode.

asked by cheri on October 5, 2012
27. ## MATH

1.) solve the equation 2 x - 3 = 15 A. x=6 B. x=9 C. x=24 D. x = 36 2.) Solve the equation r - 4 = 11 --- 3 r = 45 r = 35 r= 33 r = 28 3.) solve the equation 7+ 3 m = 28 m = 18 m = 11 2 divide by 3 m = 9 m = 7 PLEASE HELP MS. SUE

asked by Priscilla on April 30, 2015
28. ## Math

I need a step by step solution to this problem. I'm preparing for the GKT and I can't remember how to solve these problems. This is just a sample question from the gkt practice packet. A building 51 feet tall casts a shadow 48 feet long. Simultaneously, a

asked by Amanda on August 19, 2015
29. ## maths

Please help me on these problem solving sums. Also show the rough work and answer. First question: If 15% of the children walk to school, 7% cycle to school and 30% come by bus, what percentage come by car ? 2. How much for forty steel nails at €2.50 per

asked by liam on November 10, 2015
30. ## math

One canned juice drink is 25% orange juice another is 5% orange juice. How many liters of each should be mixed together in order to get 20L that is 24% orange juice? How many liters of the 25% orange juice should be in mixture? How many liters of the 5%

asked by Anna on November 5, 2009
31. ## math

One canned juice drink is 25% orange juice another is 5% orange juice. How many liters of each should be mixed together in order to get 20L that is 24% orange juice? How many liters of the 25% orange juice should be in mixture? How many liters of the 5%

asked by Anna on November 5, 2009
32. ## chemistry

1. (Answer c)The hydroxide ion concentration in a 1.0 mol/L solution of acetic acid at 25°C is a.4.2 x 10^-3M b.2.4 x 10^-11M c.2.4 x 10^12M d.2.4 x 10^-3M e.1.8 x 10^-5M I did [OH-]=root(Kw/Ka) x [salt] [OH-]=root(1.00 x 10^-14/1.8 x 10^-5) x [1] I don't

asked by Anonymous on January 11, 2018
33. ## Algebra

how to solve this: what is the largest rectangular area that can be enclosed with 400 ft of fencing? What are the dimensions of the rectangle? Could someone write the equation. I know how to solve it without an equation but I want to know the equation.

asked by Amy on November 7, 2010
34. ## Precalc

1. Solve log (4x) = log (2) + log (x-1) the fact that this is x-1 and not + is really messing me up because i keep getting a negative number and that isnt possible 2. Solve: absolut value of(x^2 -4x-4) = 8 thanks so much!!! I have been studying and my

asked by Rebekah on December 20, 2012
35. ## algebra

Solve the equation using the zero-product property. -9n(5n-5) a. -1/9, 1 b. 0,1***** c. -1/9,-1 d. 0,-1 Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2-6=x a. x=2,3 b. x=-2,3 ***** c. x=2,-3 d. x=-2,-3 How

asked by frank on May 14, 2018
36. ## algebra 1

I'm stuck on this problem. Can you help? -4x-9y=1 -x + 2y =-4 WHat is x and y? Two equations in two unknowns. Here is a quick way to solve them -4x - 9y = 1 4x - 8y = 16 (I got that my multiplying both side so the secind equation that you provided by -4)

asked by kyle on December 5, 2006
37. ## algebra

could someone check these answer please? solve the following proportion for x. x/8=5/3=0 rueben drove 300 miles using 14 gallons of gas, at this rate, how many gallons would he need to drive 210?= 40.3 gallons solve for v; v^2+v-30=0=v=-6,5 thanks

asked by lee on October 31, 2010
38. ## MATHS

i need a lil help with this If x=2 is a root of the equation 6x^3 - px^2 - 14x + 24=0, find p,hence, solve the equation i got p to be 11 how do i solve the equation? You did it. http://www.jiskha.com/display.cgi?id=1165710846.1165713920

asked by KIM on December 9, 2006
39. ## chemistry (Organic)

According to the two reactions below; 1-chloro-2,2-dimethylbatune + (warm NaOH 3)) 1-chloro-2-methylpropane + (cold dil.NaOH) 1) identify whether the reactions are Nucleophilic Substitutions (SN) or Elimination (E) reaction. 2) Complete the reaction

asked by johnny on October 8, 2015
40. ## World History

Which most accurately describes the impact that China can have on global economics? Lack of export tariffs has shifted interest in Chinese manufactured goods, which has allowed for rapid economic growth. Shifts in Chinese imports can significantly affect

asked by mgoguen on November 30, 2018
41. ## Math

A glass box shaped like a rectangular prism has width of 7 in., length 9 in., and height 12 in. . It is being shipped in a bigger box with width 10 inches, length 10 inches, and height 15 inches. The space between the box and the shipping box will be

asked by A girl with problems. on March 18, 2016
42. ## cal

find the equation of a quadratic function whose graph is tangent at x=1 to the line whose slope8, tangent at x=-2 to solve the line with slope-4 and tangent to the line y=-8 find the equation of the tangent lines at x=1 and x=-2 graph the quadratic

asked by erika on February 28, 2011
43. ## Math

The public transportation department measures the distance from a location using displacement vectors. To ride the bus to work for a discounted amount, you have to travel displacement vectors. To ride the bus to work for a discounted amount, you have to

asked by girly girl on May 9, 2018
44. ## Chemistry

a piece of Aluminium weighing 2.7g is titrated with 75 mL of H2SO4(specific gravity 1.18 and 24.7% H2SO4 by weight). after the metal is completely dissolved the solution is diluted to 400 mL . calculate the molarity of free H2SO4 in the solution.

asked by glorious on March 26, 2019
45. ## Web servers

You work for a small business that sells local artist paintings. You are the Web developer, and system administrator, for the six-person office. The owner would like to begin selling paintings over the Internet. She would like to have: 1. A listing of

asked by Mike on August 14, 2009
46. ## math

On Rhonda's family farm, the workers picked 5/12 of the strawberries in the first week. These strawberries were put in 10 crates, and 20kg were left over. The crates were sent off to the supermarket and the other 20kg were sold at the family fruit stand.

asked by LInda on February 5, 2015
47. ## Calculus

1. Find the area of the region bounded by the curves and lines y=e^x sin e^x, x=0, y=0, and the curve's first positive intersection with the x-axis. 2. The area under the curve of y=1/x from x=a to x=5 is approximately 0.916 where 1

asked by Jessy152 on February 27, 2013
48. ## Biology

I'm doing a lab for gel electrophoresis and we added the digests in the wells of the agarose gel Lane 2 – λ Hind III (a standard) Lane 4 – Tube 1 Lane 5 – Tube 2 Lane 6 – Tube 3 Lane 7 – Tube 4 Now will DNA in tube 1 which only has dh20, 10x

asked by Michelle on April 2, 2013
49. ## algebra

x+9>2 how do I solve and graph this? The graphing part would be hard to explain. The equation, you solve the same as if the greater than sign (>) was an equal sign. (But don't change it to an equal sign) a+b>c To solve for a: a>b-c Matt I'm stupid

asked by jean on May 30, 2007
50. ## physics

I need help solving these problems. I tried but my teacher did not teach it to us so it is very difficult for me. Thanks. "Projectiles launched at an angle" 1. A golfer can hit a golf ball a horizontal distance of over 300 m on a good drive. What maximum

asked by anonymous on October 24, 2006
51. ## physics

A small ball rolls horizontally off the edge of a tabletop that is 1.2 m high. It strikes the floor at a point 1.52m horizontally away from the edge of the table. a) How long is the ball in the air? b) What is the speed at the instant it leaves the table?

asked by jenny on October 24, 2006

What is satire's underlying goal? to sell newspapers to shock people to get people to think c Many young people today get their news from which of the following unlikely sources? comedy shows such as "The Daily Show" their friends video games B Which of

asked by jimm on March 18, 2015
53. ## science i neeeddd help

How did the sun wind up in the middle of the solar system? Did the materials, gas and dust that eventually formed the planets come from the sun? I think this is the answer is it correct- Since our solar system is already formed, we must try to reconstruct

asked by Hot Stuff on April 19, 2007
54. ## english

wirte a review with at least five adjectives, five adverbs Grey’s Anatomy is a funny, witty, romantic, medical drama. It stars Ellen Pompeo as Meredith grey, a first year surgical intern at Seattle Grace Hospital, which she is guided by a skillful team

asked by jub on January 30, 2011
55. ## chem

At what temperature will a molecule of UF6 have the same average speed as a molecule of hydrogen gas at 37 degrees C? I was planning on using this set up: ((3RT)/MM UF6)^1/2 = ((3RT)/MM H)^1/2 filling in the known information so you will solve for T of

asked by Cuzzy on January 4, 2007
56. ## math

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ----------- > or = to 85 4 x is her last

asked by Jennifer on November 29, 2011
57. ## Physics

A meter stick is positioned on a horizontal table top such that the 100cm end extends over the edge of the table. A 200 g mass is produced on the 85 cm mark of the meter stick. When the 70 cm mark of the meter stick is on the edge of the table, the meter

asked by Stella on December 9, 2018
58. ## Physics

A point mass block slides without friction on the loop-de-loop track of radius R as shown. From what height h must it be released from rest in order to make it around the loop without leaving the track? Show the equation and then plug the numbers into that

asked by Anonymous on October 26, 2016
59. ## science

What are the consequences of avoiding stress management? Consider all six dimensions of wellness. Here are some results I have come up with? Is there more? Science and medical studies have substantiated that we can avoid the detrimental outcomes of

asked by Tommy Boy on July 25, 2009
60. ## physics

A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work

asked by jay on February 5, 2018
61. ## physics

A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work

asked by jay on February 4, 2018
62. ## chemistry

Aqueous silver nitrate reacts with aqeous potassium iodide in a double-replacement reaction to produce a precipitate of silver iodide. If 34.6 ml of 0.563 M silver nitrate are used with 148.4 ml of potassium iodide: a) What molarity of potassium iodide

asked by Rachel on December 6, 2011
63. ## math

On Rhonda's family farm, the workers picked 5/12 of the strawberries in the first week. These strawberries were put in 10 crates, and 20kg were left over. The crates were sent off to the supermarket and the other 20kg were sold at the family fruit stand.

asked by LInda on February 5, 2015
64. ## Math

On Rhonda's family farm, the workers picked 5/12 of the strawberries in the first week. These strawberries were put in 10 crates, and 20kg were left over. The crates were sent off to the supermarket and the other 20kg were sold at the family fruit stand.

asked by LInda on February 5, 2015
65. ## math(LP)

sorry here again.. never mind the table i said...sorry The cheesy company produces two types of cheese with extra sharp cheddar cheese. The cheese spreads are packaged in 120 ounce containers, which are then sold to distributors throughout northeast. The

asked by cocobunniesfromhell on June 23, 2009
66. ## math(LP)

sorry here again.. never mind the table i said...sorry The cheesy company produces two types of cheese with extra sharp cheddar cheese. The cheese spreads are packaged in 120 ounce containers, which are then sold to distributors throughout northeast. The

asked by cocobunniesfromhell on June 23, 2009
67. ## Physics

A man with mass m1 = 59 kg stands at the left end of a uniform boat with mass m2 = 163 kg and a length L = 3.5 m. Let the origin of our coordinate system be the man’s original location as shown in the drawing. Assume there is no friction or drag between

68. ## Genetics

I'm having trouble with this problem, because I keep getting the same answer for two of the questions, which doesn't help me with part d. If someone could give me some hints as to how to solve this correctly. Also do how does the anothocyanin factor in? Do

asked by chamel413 on November 27, 2007
69. ## math

Part 1 : Store equipment is purchased on January 1, 2002 at a cost of \$14,000 and \$1,000 was spent on its installation. The depreciation is written-off at 10% on the original cost every year. The books are closed on December 31, every year. Instructions:

asked by elle on March 28, 2013
70. ## Marketing

A) The total market for high density TV’s is estimated to be 600,000 units. Product development and marketing costs for market entry are \$30,000,000. The marketing department anticipates a selling price of \$2,000 and a variable cost of \$1,500. What

asked by Charles on December 9, 2009
71. ## circle inscribed

--------------- QUESTION FOLLOWS -------------------------- Can someone Please help I definitely do not know how to do this. A)Find x, to find x you need to add the arc measures together and set the expression equal to the total degrees of circle then

asked by lilman on May 22, 2012
72. ## physics

Find the threshold energy that the incident neutron must have to produce the reaction 1 n 0 + 4 He 2---> 2 H 1 + 3 H 1 For this, like the 1 n 0

asked by jaimie on February 16, 2007
73. ## Writing

Would you please proof read and give any suggestions on making this a polished piece? For the past three months work-related problems have occurred, causing conflicts among co-workers. The ongoing problems require attention in order to better assist our

asked by Mandy on March 21, 2009
74. ## Chemistry UGH

Help please! I can't solve any of these, would someone be as kind as to show me the answers? How many moles of NaHCO3 are in a 125.0 g sample of the compound? 3. How many moles are in 6.73 x 1024 water molecules? 4-5. AgBr, a chemical used in photography

asked by Daniel on May 28, 2009
75. ## algebra

Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s). The difference between two numbers is 3, and the sum of those two numbers is 21. What are the two

asked by Cory on July 7, 2012
76. ## physics

A skier of mass m kis down a 30 degree slope. By measuring her acceleration a, the coefficient of kinetic friction mk between the skis and the snow can be calculated. Show that mk=(g sin 30-a)/(g cos 30) SO I know that sin 30 = opp/hyp and cos 30 =

asked by Anonymous on October 7, 2007
77. ## Chemistry

A certain classification test calls for 5 mL of 1.2 M NaOH. The only concentration of NaOH solution available is 3.0 M. Describe how you would make the quantity that you need of the 1.2 M NaOH solution.

asked by Wanda on November 8, 2011
78. ## chemistry

a saturated solution of a salt X contains 0.28g of the salt in 100cm3 of solution at 25degree centigrate, what is the solubility of the salt X at this temperature (R.m.m of X=56)

asked by emma gegeluv on March 14, 2012
79. ## medicine

50 ml of a solution of 50% dextrose is added to a liter of 0.45% NaCl with 2.5% dextrose to yield a solution with a final dextrose concentration of what percent

asked by Jessica on September 23, 2010
80. ## Chemistry 314

What NaCl concentration results when 254 mL of an 0.880 M NaCl solution is mixed with 412 mL of a 0.450 M NaCl solution?

asked by Amanda on August 26, 2012
81. ## chemistry

An aqueous solution of ethanol is 3.05 M in ethanol, CH3CH2OH. Calculate the mole fraction of ethanol if the density of the solution is 0.964 g mL-1.

asked by mark on November 12, 2007
82. ## chemistry

What NaCl concentration results when 279 mL of a 0.640 M NaCl solution is mixed with 427 mL of a 0.490 M NaCl solution?

asked by lee on April 17, 2013
83. ## Chemistry

1. You will need 600mL of a 0.5M NaOH solution. 3M NaOH is provided. Determine how much of the 3M NaOH you will need and write a procedure in your notebook for making the solution.

asked by Lucinda on June 16, 2010
84. ## algebra HELP

mary has a solution that is 60% alcohol and another that is 20% alcohol. how much of each should she use to make 100 milliliters of a solution that is 52% alcohol? please help, I don't understand how to do this problem!

asked by hannah on May 31, 2009
85. ## chemistry

a saturated solution of salt X contains 0.28g of the salt in 100cm3 of solution at 25degree centigrate, what is the solubility of the salt X at this temperature (R.m.m of X=56)

asked by emma gegeluv on March 14, 2012
86. ## chem

If 50.0 mL of a 0.10M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium chloride, what is the molar concentration of chloride in the resulting solution?

asked by Amanda on October 6, 2009
87. ## chemistry

what volume of a concentrated HCl solution which is 36% HCl by mass and has a density of 1.179g/ml should be used to make 5.30L of an HCl solution with a pH of 1.8?

asked by Anonymous on February 11, 2013
88. ## Chemistry

A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 5.0 mL of a 5.0 % (m/v) CaCl2 solution, how many grams of CaCl2 were given?

asked by Ava on July 17, 2016
89. ## Algebra

How many liters of a 25% antifreeze solution must be mixed with 4liters of a 60%antifreeze solution to make a mixture that is 45%antifreeze? I'm not sure of the correct formula to use.

asked by Terri on December 6, 2016
90. ## chemistry

H3PO4 reagent solution in a lab is 85%pure.specific gravity of H3PO4 solution is 1.69.find out the normality of H3PO4.

asked by mona dutta on July 23, 2012
91. ## Physics

A system consists of two particles. Particle 1 with mass 2.0 kg is located at (2.0 m, 6.0 m) and has a velocity of (3.1 m/s, 2.6 m/s). Particle 2 with mass 4.5 kg is located at (4.0 m, 1.0 m) and has a velocity of (1.1 m/s, 0.6 m/s). Determine the position

asked by Tim on June 11, 2012
92. ## Physics

Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.80 x 10^11 m apart. The larger of the two stars has a mass of 3.50 x 10^30 kg, and its center is 3.00 x 10^11 m from the system's center of mass. What is the

asked by Anne on October 24, 2011

This is the second reaction: HCl(aq)+NaOH(aq)-->NaCl(aq)+H2O(l) (Heat of neutralization) This reaction involves mixing two solutions: 1.00 mol/L NaOH and 1.00 mol/L HCl. Trial 1: 48.0 mL of the NaOH solution is mixed with 47.5 mL of the HCl. The

asked by tessa on January 1, 2012
94. ## math

You and your friend are saving for college. You have \$50 and are added \$10 each week to your savings. Your friend has \$20 and he is adding \$20 each week to his savings. a. what system of equations would be a good model for this situation? Let x be number

asked by Lisa on October 18, 2013
95. ## Calculus

solve (Z^2)+5=-4/Z^2 how do i solve it?? the answer is +2or-2, or, +or -i. but i really don't know how to get this answer.i tried to multiply both side by Z^2, but i think it just made it more comlicated and i didn't get the right answer at the end...can

asked by Anne on March 12, 2008
96. ## calculus

two curves are orthogonal at a point of intersection of their tangents at that point cross at right angles. Show that the curves 2x^2+3y^2=5 and y^2=x^3 are orthogonal at (1,1) and (1,-1). Use parametric mode to draw the curves and to show the tangent

asked by Anonymous on November 15, 2011
97. ## calculus help.Pleaseee(thankyou guys for helping

Your Open QuestionShow me another » Calculuss homeworrk heelp? A rocket is being tracked from a radar post that is 10 km from the launch pad.the rocket arises vertically at a height of 17.32 km and then turns at an angle of 30 degrees fron the vertical

asked by tara on March 17, 2011
98. ## calculussCalculuss ( pleassee heelp )

Your Open QuestionShow me another » Calculuss homeworrk heelp? A rocket is being tracked from a radar post that is 10 km from the launch pad.the rocket arises vertically at a height of 17.32 km and then turns at an angle of 30 degrees fron the vertical

asked by Alisha on March 18, 2011
99. ## Chemistry (Check)

Completion Percent error is calculated by dividing the ___1____ of the error by the accepted value and then multiplying by ____2___. 1)ablsoute vale 2)100% right on both. thanks when 2.0 g of NaOH were dissolved in 53.0 g water in a calorimeter at 24C, the

asked by Bryan on January 15, 2007
100. ## Chemistry

H2C2O4.2H2O(s) is primary standard substance. 2.3688g of oxalic acid hydrate were completely neutralized by 42.56ml of NaOH solution. Calculate the molar concentration of the NaOH solution. Write the balanced equation for the reaction.

asked by Sean on April 1, 2013