# why does the equation x^2=-9 has no real solution why does the equation x^2 = 9 has two solutions

56,329 questions, page 410
1. ## math

the annual household cost of telephone service in the US increased at a relatively constant rate of \$27.80 per year from 1981 to 2001. IN 2001 the annual household cost of telephone service was \$914. a:What was the annual household cost of telephone

asked by Taylor on November 14, 2013
2. ## Math

The nominal rate of interest is 8% and the rate of inflation is 5%. A single deposit is invested for 10 years. Let: A= value of the investment at the end of 10 years measured in "constant dollars," i.e. in dollars valued at time 0. B= value of the

asked by Katie on May 11, 2011
3. ## Macroeconomics

Wondering if I am doing this correctly?? If net taxes are increased by 3 billion dollars by how much would we expect real GDP to change? My answer is: d) If the government increases taxes by 3 billion dollars we would use the tax multiplier to determine

asked by Isis on November 4, 2012
4. ## chemistry

Is this balanced properly 2H2O2----> 2H2O +O2 Thank you for the reactions of zinc and acetic acid. REAL QUESTION, if I was to rub all the copper off of a new penny down to the zinc, what would be the appearance of the zinc if I left it in vinegar (acetic

asked by lulu on November 13, 2016
5. ## English

For english class, I have to read a biography/autobiography of an author and then read two of the author's books that have been influenced by their real life. I chose F. Scott Fitzgerald as my author. I want to read The Great Gatsby as one of the books,

asked by Ceci on December 4, 2012
6. ## Marketing

What are key sales promotion techniques examples that marketing firms direct toward trade and consumers. Include real-world examples to describe the following classifications of sales promotion techniques: *Discounts and deals *Increasing industry

asked by Sales Promotion Techniques on November 16, 2009
7. ## Math

The International Space Agency is preparing an experiment to determine the acceleration of gravity on a planet. We know the height of a falling object (s) can be modeled by the equation s=1/2 at^2+v_o t+s_o, where a is the acceleration of gravity, vo is

asked by nonymous on March 20, 2019
8. ## Physics

Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in the figure to pull it out. T = 11000 N A. What force would you have to exert perpendicular to the center of the rope to produce a force of 11000 N on the car if

asked by Stephanie on October 9, 2014
9. ## HHEELLPP!!!!!!!!!!!!!!!!!

can anyone write a real world situation that can be represented by the given expression n + 7 5n 1/4n 2n- 12 n/10 + 23 mis-identified on subject line like write a situation using these numbers Here is one as an example: The amount of illuminated tracer

asked by Anais on February 14, 2007
10. ## math

A town planner is using a map of a town centre with a scale of 1: 1250 A new section of road will be 180 cm. How long will it be on the map? Give your answers in centimetres. how do i work this ouit? Please check your figures and the wording of your

asked by sarah on May 11, 2007
11. ## Chem.....

Methanol, CH3OH, is produced on an industrial scale from carbon monoxide and hydrogen. At the temperatures used, gaseous methanol is formed according to the following thermochemical equation: CO(g)+ 2H2(g) CH3OH(g) H = -90Kj 1. State Le Chateliers

asked by Jon on March 4, 2007
12. ## social studies

Fran's little girl, Fifi, is a real tomboy. Fran asks you to explain why Fifi prefers rough play, boys' clothing and toys, and the company of boys to the company of girls. You believe in the biological explanation of gender development, so you will tell

asked by clara on October 8, 2012
13. ## math

How sensitive to changes in water temperature are coral reefs? To find out, scientists examined data on sea surface temperatures and coral growth per year at locations in the Red Sea. Here are the data: Sea surface temperature 29.71 29.84 30.31 29.66 30.47

asked by Mike on February 9, 2018

1. Write a function rule for finding the amount of daily pay, p, in the following situation: A bus driver gets paid \$100 each day plus \$0.20 per kilometer, k. (1 point) 100 = 0.20 × k p = 0.20 × 100 × k p = 0.20k + 100 0.20k = 100 + p 4. Write a

asked by Delilah on April 19, 2013
15. ## Math word problem

Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What is the speed of the wind? I don't understand any of the responses. You have to assume in this case the wind retards and assists

asked by Erica on October 12, 2008
16. ## problem solving

in 1979, the death rate,D, from acute myocardial infarction for people between the ages of 65 and 74 years was 577 per 100,000 people. In 1996, the rate was 262 deaths per 100,000 people. Round to one decimal place in part a. write sentences for your

asked by britteny on January 10, 2007
17. ## Sequences

For any sequence of real numbers A = {A_1, A_2, A_3, ... }, define *A to be the sequence {A_2 - A_1, A_3 - A_2, A_4 - A_3,..}. Suppose that all of the terms of the sequence *(*A) are 1, and that A_19 = A_92 = 0. Find A_1. Help me, please. Thanks

asked by Joebelle on January 25, 2015
18. ## Computers

Which of the following operating system types is used in medical equipment or a cash register? A. Multi-user/multi-tasking B. Real-time C. Single-user/multi-tasking D. Single-user/single-tasking

asked by Carolyn on May 22, 2013
19. ## physics E&M

I posted a question on here earlier but I wasn't able to solve from what the person had told me. An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point charge of 3.5 micro

asked by aaron b. (again sorry) on January 27, 2012
20. ## AP Physics

I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the definition of average velocity to derive a formula for x use the formula for average velocity when constant acceleration is

asked by AP Physics on June 18, 2009
21. ## Algebra (new one since I put "match" (bad speller)

I have a few match problems that I can't figure out. 1.solve: 3x+5=x√7 (that's a radical sign) 2.factor: (2k+3)2-(2x+3)(y-2)-20(y-2)2 (the "2" after (2k+3) ans (y-2) is suppose to be a square sign. thanks if you can help, or even if you can't For number

asked by Sarah on January 21, 2007
22. ## Chemistry

Use the following answers for questions 1 - 3. (A) F (B) S (C) Mg (D) Ar (E) Mn 3. Forms oxides that are common air pollutants and that yield acidic solution in water I think the answer to this one is B, but why is it B? I see how it would yield an acidic

asked by Rachel on April 12, 2007
23. ## Econ

(Year 2000, Year 2001) QUANTITY ...Popcorn: (200,250) ....Novels: (50,30) .....Shoes: (8,10) PRICE ...Popcorn: (\$1,\$2) ....Novels: (\$20,\$25) .....Shoes: (\$100,\$80) If 2000 is the base year, what is the real GDP in 2001?

asked by Ed on June 30, 2009
24. ## algebra 2

evaluate if possible 1. square root -121 A not a real number 2. 3cube-8/27 would this be 3cube -2/3 number 1 is correct i've had that one in my homeworks previously. number two i am not sure how it would actually look 3^3+ (-8)/(27)= If so to reduce it I

asked by Ray on June 5, 2007
25. ## physics

For a particular type of wave in a particular medium why must f and lambda be inversely proportional. Frequency deals with the number of waves per second, while wavelength deals with the distance from peak to peak. It would be inversely proportional

asked by susan on February 18, 2007
26. ## Physics

Q: From the Bohr model of the Hydrogen atom, calculate the minimum amount of energy (in eV) an electron in the lowest orbital would need to free it from its proton (i.e., to ionize the atom). A: would I use the equation: En = - 13.6 / (n^2) ? If so, an an

asked by Tracey on May 26, 2009
27. ## Chemistry

50mL of 0.1M HCl is mixed with 50mL of 0.1NaOH. delta T = 3^oC. Calculate the enthalpy of neutralization per mole of HCl. assume the specific heat capcity of the solution is 4.18J/g/C and density=1.0g/mL. I tried it but got the wrong answer. What I did was

asked by Vic on August 10, 2007
28. ## Statistics

Tennis Ball Manufacturing: A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height of a ball’s bounce upward to be 55.5 inches. This average is

asked by Rose on May 26, 2015
29. ## Math for Trish To Help Me With

Factor the following. You will earn 5 points for each polynomial that is factored correctly. Please label your individual answers with a – f. a.) 4x2 - 25 b.) 3x2 + 6y c.) x^2 - 7x + 10 d.) 2x^2 - 9x – 18 e.) 2ax + 6bx + ay + 3by f.) 6x^2 + 12x – 48

asked by Margie on February 6, 2007
30. ## Managerial Economics

When developing short-run cost curves, it is assumed that all firms in perfect competition have the same cost curves and they all make identical short-run profits or losses. Contrast this to the real world and why individual firms might experience

asked by Cindy on November 14, 2011
31. ## Math

5).Hat size are determined by the measuring the circumference of the head in either inches or centimeters. Use ratio and proportion to complete the following table. Hat size Head circumference Head Circumference 7 ½ to nearest 1/5 inch to the nearest

asked by Mickey on May 28, 2010
32. ## english II

Errors in the use of punctuation marks - Semicolons and Colons A.Many of the "lite" products on the market bear little resemblance to their progenitors; non-fat cream cheese, for example, tastes completely different from the real thing. B.Registered mail

asked by Shaquitta on November 24, 2009
33. ## english II

Errors in the use of punctuation marks - Semicolons and Colons A.Many of the "lite" products on the market bear little resemblance to their progenitors; non-fat cream cheese, for example, tastes completely different from the real thing. B.Registered mail

asked by Shaquitta on November 24, 2009
34. ## Calculus

A cylindrical drum is made to hold exactly 1m^3 in its interior. Assume that the material for the top and the bottom costs \$20 per m^2, while that for the side costs \$10 per m^2. Determine the radius of the drum that minimizes the cost of the material

asked by Frederique on December 10, 2006
35. ## Chemistry

1. A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. Which reactant is the limiting reactant? 2. A solution containing 0.100 mol of Na2CO3 and 0.100 mol of NiCl2 is allowed to react. How many moles of precipitate form in

asked by Eagertolearn on February 23, 2013
36. ## Chemistry

A certain mine produces 2.5 108 kg of copper from chalcopyrite (CuFeS2) each year. The ore contains only 0.80% Cu by mass. (a) If the density of the ore is 2.0 g/cm3, calculate the volume of ore removed each year. (b) Calculate the mass of SO2 produced by

asked by Chemistry on April 13, 2007

The diameter of a valve for the space shuttle must be within 0.001 mm of 5 mm. Write and solve an absolute-value equation to find the boundary values for the acceptable diameters of the valve. | d - 5.000| = 0.001 d - 5 = 0.001 d * 1000 - 5 * 1000 = 0.001

asked by buttercup on August 30, 2016
38. ## algebra 1

A bottle and a cork together cost \$1.00. The bottle cost 90 cents more than the cork. How much does the cork cost? Bottle - 95 cents Cork - 5 cents How would you write an equation for this?

asked by need help!! on April 15, 2008
39. ## Math: Direct Variation

I really don't get direct variation and I took a test on it and bombed it but now I can correct it so if anyone can just explain it to me I'd be really grateful. :) Generally, direct variation means that as one of the variables assumes increasing positive

asked by Somebody on September 21, 2006
40. ## chemistry

In a laboratory experiment, the density of a concentrated sugar solution was determined by measuring the volume of the solution and corresponding mass. Three students each made a set of measurements using a different balance and used the results to

asked by helpp on August 30, 2008

Key: ☺ = My Answer! 2. Write a word phrase for the algebraic expression. 3x - 7 A. The difference of three times a number x and seven. B. The difference of seven and three times a number x. C. Three times a number x fewer than seven. ☺ D. The quotient

asked by Jack on August 14, 2013
42. ## Chemistry

Can hypochlorite ions oxidize bromide to bromine? In acid solutions, yes. That's the old qual test for bromide. Shake a solution of the unknown with NaOCl, this oxidizes bromide to bromine, and the bromine colors the carbon tetrachloride layer (added

asked by Raj on March 20, 2007
43. ## Accounting

Show the effect of each transaction on the individual accounts of the expanded accounting equation: Assets=Liabilities +Owner's Equity (Capital-Drawing+Revenues-Expenses). After each transaction, show the new account total. Prepare Income Statement,

asked by Crystal on July 10, 2008
44. ## 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
45. ## Algebra II

I think I need to go backward for my answers. starting with c. As I am no good at math I have to guess I am wrong. Can I get some guidence on how to set up the problem? To estimate animal populations, biologists count the total number of animals in a small

asked by Marysvoice on January 21, 2008
46. ## 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
47. ## Physics

In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball moves at 3.50 m/s along a line making an angle of 22 degrees with its original direction of motion. and the second ball had a speed

asked by Nat on March 6, 2007
48. ## Astrophysics

(a) From the absorption lines, we were able to determine that the star (phi)-Fictus has spectral classification F7V and color index B-V=0/48. What is the mass M(phi) of the star in solar masses? (b) Spectroscopic parallax, when corrected for reddening,

asked by O_o Rion on February 2, 2010
49. ## 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
50. ## 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
51. ## 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
52. ## History WWI

What was the day of surrender know as for WWI? I know a lot about WWII but not a lot about WWI. The real question was "When was the surrender of WWI? What do you know the day as?" I know the surrender was on november 11, 1918.

asked by Morgan on November 20, 2014
53. ## chem 12

This is my question Into a 500mL container a chemist introduces 2.0 x 10^-2 mol of N2(g) and 2.0 x10^-2 mol of O2(g). The container is heated to 900degrees celcius and the following equilibrium is achieved. N2(g) + 2O2----N2O4(g) calculate the intial

asked by George on February 3, 2016
54. ## criminology

Can someone tell me a policy that is in effect that relates to trait theories? Determine how far sound travels in 55 minutes. Express your answer in feet. You may use 760 mph as the speed of sound.Do I divide,add,subtract or multiply. Check out this site:

asked by Kg on May 18, 2007
55. ## physics

The mars rover opportunity approached Mars on January 24th, 2004 and was moving with a velocity of 5.4km/s when it hit the atmosphere on its way to the surface at Miridani Planum. i)convert this speed to miles/hr. ii) If it took the lander 6 minutes to hit

asked by Kevin on September 23, 2017
56. ## algebra

In a real-life situation, to model the distance x and the height of hitting a baseball y as in: y = ax^2 + bx + c 1. When dealing with the initial height of the ball, what is happening when x = 0? Is it that the ball has not yet traveled any distance? 2.

asked by Anil on October 8, 2011
57. ## MATH

HELP !!! Which statistics concept is described? Choose from these answers: [(A):statistical test] [(B):Null Hypothesis] [(C):alpha] [(D):one-tailed test] [(E):two-tailed test] [(F):Type I error] [(G):Type II error] [(H):the statistic Z] 1)When a hypothesis

asked by Anonymous on April 24, 2015
58. ## Physics

A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.20×10^4 Pa, while in the region of blockage it is

asked by Andrea on November 12, 2008
59. ## Discipline and Guidance

Two children are fightining over the blue marker. According to constructivist discipline, what is the best approach for the caregiver in this situation? A. Take the blue marker from both children and tell them to clean up their work,since they cannot get

asked by Melody on January 11, 2007
60. ## Stats

The data below were gathered on a random sample of 5 basking sharks, swimming through the water and filter-feeding, i.e. letting the water bring food into their mouths. Body Length (meters) Mean Speed (meters/seconds) 4 0.89 4.5 0.83 4 0.76 6.5 0.94 5.5

asked by leah on September 30, 2016
61. ## Math

My 10th grade teacher gave us geometry homework and this problem has me stumped for sure. This rhombus has three interior angles: (5x-2)°, (8y+2)°, and (3x+22)° . We are supposed to find the value of x and y. I tried to use an equation by assigning the

asked by Luis on March 12, 2015
62. ## 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
63. ## Chemistry

Hello, So I have recently done a lab with cobalt(II) nitrate and NaOCl (bleach) and our objective was to determine if colbalt or the bleach is part of the rate determining step. With the lab we have done trials by diluting the colbalt and leaving the

asked by Sherlique on September 26, 2017
64. ## algebra

The number of students attending the fall play was 150 more than the number of adults attending. Students tickets cost \$3, and adult tickets cost 45 . A total of \$4730 was collected. How many students attended the play? this is what i have, but i need help

asked by jeremy on October 13, 2008
65. ## Math

Simlifying Rational Expressions Reduce to lowest terms, stating the restrictions on the variable. I really don't understand the whole cancelling out the factor thing, and not cancelling out the terms. As I was having lots of trouble with this stuff this is

asked by -Untamed- on December 10, 2011
66. ## algebra

You are planning an ornamental garden that has a total area of 200 square feet. There are two sizes of ornamental plants you have chosen for your garden. Each small plant requires 2.5 square feet of space and each large plant requires 8 square feet of

asked by eve on November 26, 2012
67. ## MATH PLZ HELP

1 Fast Rental Services and Red Rent Services provide rental cars. Fast Rental Services charges a flat fee of \$4.50, plus \$0.75 for every mile traveled. On the other hand, Red Rent Services charges a flat fee of \$7.50, plus \$0.65 for every mile traveled.

asked by PLZ HALP on November 7, 2017
68. ## Chemistry

A solution containing a mixture of 0.0381 M potassium chromate (K2CrO4) and 0.0769 M sodium oxalate (Na2C2O4) was titrated with a solution of barium chloride (BaCl2) for the purpose of separating CrO42– and C2O42– by precipitation with the Ba2 cation.

asked by Anne on October 15, 2015
69. ## chem experiment:

You are required to design an experiment to test Hess's law using the combustion of ethanol. Write a brief design for this experiment. What I wrote as my answer: Hess’ Law: is the algebraic addition of chemical equations yields a net equation whose

asked by rob on May 17, 2007
70. ## Physics HELP!!!!!!!!

Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.06 10-2 m2, and the pressure outside the cylinder is 1.02 105 Pa.

asked by Mary on April 21, 2007
71. ## Chemistry

I am learning the different types of chemical reactions synthesis, decomposition, single displacement, and double displacement I am also learning skeletal equations word equations and balancing the equations I know how to balance equations if I am given

asked by Sam on March 3, 2014
72. ## Physics

Use the position equation given below, where s represents the height of the object (in feet), v0 represents the initial velocity of the object (in feet per second), s0 represents the initial height of the object (in feet), and t represents the time (in

asked by Kristi on September 3, 2012
73. ## Algebra

Did I do thes right? 1. Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: a) What does the number 3.03 represent? The cost for one gallon of

asked by A.W. on February 28, 2009
74. ## math

asked by John on May 23, 2007
75. ## algebra

college football coach wants to know if the is a correlation between his players' leg strength and the time it takes for them to sprint 40 yards. he sets up the following test and records the data: Every day for a week, he counts how many times each player

asked by ....... on December 3, 2015

A college football coach wants to know if the is a correlation between his players' leg strength and the time it takes for them to sprint 40 yards. he sets up the following test and records the data: Every day for a week, he counts how many times each

77. ## Algebra

A college football coach wants to know if the is a correlation between his players' leg strength and the time it takes for them to sprint 40 yards. he sets up the following test and records the data: Every day for a week, he counts how many times each

asked by Anonymous on November 17, 2015
78. ## Algebra

A college football coach wants to know if the is a correlation between his players' leg strength and the time it takes for them to sprint 40 yards. he sets up the following test and records the data: Every day for a week, he counts how many times each

asked by Anonymous on November 23, 2015
79. ## LA - 2 questions

Which of the following is the most useful question to ask when analyzing causes and effects in a literary work? How are these two events related? What is the central theme of the work? What happens to the main characters? How will the readers most likely

asked by SkatingDJ on May 27, 2015
80. ## math problem/break even point

Hondas rent for \$25 per day and \$.24 (24 cents) per mile. Toyotas rent for \$31 per day and \$.19 (19 cents) per mile. Write a cost equation for each rental car The distance from Monterey, Ca to San Francisco, Ca is about 110 miles. Which car would be the

asked by Michelle W. on August 20, 2007
81. ## Decartes Rule

Can you please check my work? Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There

asked by Ash on October 12, 2007
82. ## Chemistry

If a solution is made by adding 0.100 mole of ethyl ether to 0.841 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20oC are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20oC ..is how many

asked by EGM on September 23, 2011
83. ## chemistry

Hello, ((((((I need the answer in a hour from my posting))))) I have been posting this problme for four days ago, so please show Sympathy. I solved it but I want to be 100% su ...there is moreshow problem Hello, ((((((I need the answer in a hour from my

asked by Cheimie on November 5, 2009
84. ## algebra

The following graph shows how a 4-color web printing press depreciates from the year 2006 to the year 2010. It was purchased new in the year 2006; therefore x = 0 represents the year 2006. X – axis (horizontal) = years starting from 0 = 2006 and

asked by jim on February 11, 2012
85. ## pre-algebra

your family is driving to houston,texas.A sign indicates that you are 700 miles from houston.Your car's trip odometer indicates you are 400 miles from home.YOu are traveling at an average speed of 60 miles per hour. A. write an expression for the

asked by Martin on December 9, 2008
86. ## math

A hot dog vendor at the zoo recorded the average temperature and the average number of hot dogs she sold. The equation for the line of best fit for this situation is shown below. Based on the line of best fit, complete the following statements. The

asked by debby on February 28, 2014
87. ## Finance

Following are selected balance sheet accounts for Third State Bank: vault cash  \$2 million; U.S. government securities  \$5 million; demand deposits  \$13 million; nontransactional accounts  \$20 million; cash items in process of collection \$4 million;

asked by Phoebe on October 22, 2013
88. ## Science

A Sample of seaweed contains 1 Liter of water and has 50 grams of salt dissolved in its cells. The seaweed is placed in a solution made of 2 Liters of water and 150 grams of dissolved salt. What will occur when the system reaches equilibrium? A. The

asked by Failing on September 28, 2018
89. ## PHYSICS - urgent

assuming there's no friction of, if two balls (one heavier than the other) are held up the same distance from the ground; the heavier ball will have more G.P.E than the lighter one, n when both are dropped, all the G.P.E can only change to K.E, as there's

asked by Shahrukh on August 12, 2005
90. ## chemistry

An insulated beaker contains 250.0 grams of water at 25oC. Exactly 41.6 g of a metal at 100.0oC was dropped in the beaker. The final temperature of the water was 26.4oC. Assuming that no heat is lost in any other way, calculate the specific heat of the

asked by utna on January 23, 2012
91. ## Math

A toy manufacturer produces action figures and packages them into small boxes. The distribution center then puts them in larger boxes to ship them to stores. 1.) Decide which box can ship the most action figures. 2.) How many action figures fit in the box?

asked by Abby on April 17, 2015
92. ## Math

Solve the system using substitution. 6x + y = 12 4x + 6y = −8 A. (2 1/2,3) B. (−2 1/2,−3) C. (2 1/2,−3) D. no solution I GOT B!

asked by Albert on January 5, 2016
93. ## chemistry

Calculate the concentration of all species in a 0.20 M KF solution.

asked by karen on March 7, 2017
94. ## math

Solve the system x+4y=1,-x+y=4.What is the -coordinate of this solution x.

asked by may on January 9, 2016
95. ## Math

which ordered pair is a solution of the inequality y≥4x - 5 A. (3,4) B. (2,1) C. (3,0) D. (1,1)

asked by I need helppppp on April 19, 2018
96. ## science

What can particles in solution NOT do because ther are so small

asked by Katherine on November 17, 2009
97. ## Algebra

For system of equations, how do you know if you have the correct solution?

asked by !! on February 24, 2019
98. ## Chemistry

what is the PH of a solution of .1 M NAN3 that disassociates into HN3

asked by Molly on March 4, 2015
99. ## Chemistry

Calculate the pOH of a 0.410 M Ba(OH) solution.

asked by Anonymous on March 4, 2015
100. ## Math

What's the difference between one solution and infinitely many solutions?

asked by Humanoid on January 29, 2015