Show that the equation 3x^2 - x^3 + 3 = 0 can be rearranged to give: x = 3 + 3 ---- x^2 x^3 = Divide by ? = x = 3 + 3 ---- x^2 Using Xn+1 = 3

62,835 questions, page 518

Tony and Alice are trying to reduce the amount of television they watch. For every hour they watch television, they have to put \$2.50 into savings. The table shows how many hours of television Tony and Alice have watched in the past two months. Tony watch

asked by STEPHON on October 2, 2014
2. chemistry

A hydrate of strontium choloride contains 40.54% water. What is the formula of the hydrate ? SrCl2*xH2O. H2O = 40.54% SrCl2 = 100 - 40.54 = 59.46% Take 100 g sample. This gives us 59.46g SrCl2 and 40.54g H2O. Convert to mols. mols SrCl2 = 59.46/158.5 =

asked by Harry on November 26, 2006
3. Art

Could you please check if everything is correct? Thank you. 1) In 1986, Eric Drexler published “Engines of Creation”, a scientific dissemination in which shows not only the theoretical bases of nanotechnology, but also a series of speculation about the

asked by John on June 11, 2012
4. Chemistry

Sorry for postiong twice. But I really need to know if the answers I am getting are correct; Nitrogen and oxygen react to produce nitric oxide according to the following equation: N2 (g) + O2 (g) → 2 NO (g) The equilibrium constant for this reaction is

asked by John on March 10, 2018
5. Dynamics

The 25-lbf block has an initial speed for v0 = 10 ft/s when it is midway between springs A and B. The coefficient of static and kinetic friction between the plane and the block are μs = 0.45 and μk = 0.4, respectively. After striking spring B, the block

asked by James on February 19, 2015
6. Trigonometry

The Leaning Tower of Pisa in Italy leans because it was built on unstable soil—a mixture of clay, sand, and water. The tower is approximately 58.36 meters tall from its foundation (see figure). The top of the tower leans about 5.45 meters off center. Use

asked by Kasia on April 23, 2014
7. chemistry

The reaction of calcium bicarbonate, Ca(HCO3)2 with hydrochloric acid, HCl, produces a solution of CaCl2, gaseous carbon dioxide, CO2, and water, H2O. Write a balanced chemical equation for this reaction and determine the volume of CO2, in mL, that forms

asked by terria on July 20, 2011
8. Math (calculus) (mean values)

A company introduces a new product for which the number of units sold Ss given by the equation below, where t is the time in months. s(t) = 155(7-(9/(2+t))) a) Find he average rate of change of s(t) during the first year. I got the answer to be 1395/28 b)

asked by Ray on December 10, 2016
9. science

A 0.972g sample of a CaCl2*2H2O/K2C2O4*H2O solid salt mixture is dissolved in ~ 150ml of deionized water, previously adjusted to a pH that is basic. The precipitate, after having been filtered and air-dried, has a mass of 0.375 g. The limiting reactant in

asked by thabiso on November 30, 2015
10. chemistry HELP!!

Reaction Rate = -(1/2) [d(H2O2)/dt] = [d(O2)/ dt] Using 25 mL of a 0.2 M hydrogen peroxide solution, the following results are obtained from the equation above: 8.62 mL of gas is collected in 120 seconds. (Assume 760 Torr = 1 atm) Room temperature is 25

asked by Aaron on September 21, 2015
11. chemistry

This equation decribes oxidation of acidified solution of sodium oxalate(Na2C2O4) by potassium permanganate(KMnO4): 5 C2O4^2- + 2Mn04^- + 16H2SO4 to produce 10Co2 + 2Mn^2- + 16HSO4^- + 8H2O. what volume of 0.127M sodium oxalate in sulphuric acid will react

asked by Temmick on February 6, 2014
12. Physics

An electromagnetic wave in a vacuum traveling in the +x direction generated by a variable source initially has a wavelength of 2.65 x 10^-4 m and a maximum electric field Emax in the +y direction of 8.20×10^−3 V/m. What are the coefficients in the

asked by Faith on November 18, 2013
13. economics

Suppose the USA and Canada are considering to trade. Assume there are only two goods in the economy: wheat and corn. The table below illustrates what each country can produce in a given year. Wheat Corn USA 4 2 Canada 5 8 In this case, which country should

asked by roxanne on November 21, 2010
14. Physics

It takes a force of 53kN on the lead car of a 16-car passenger train with mass 9.1x 10^5 kg to pull it atconstant 45 m/s on level tracks. (a) What power must the locomotive provide to the lead car? (b) How much more power to the lead car than calculated in

asked by Ben on March 23, 2015
15. College Physics

Suppose a 10.0 kg fireworks shell is shot into the air with an initial velocity of 62.0 m/s at an angle of 80.0 degrees above the horizontal. At the highest point of its trajectory, a small explosive charge separates it into two pieces, neither of which

asked by Marqueta on December 3, 2014
16. chemistry

1) 4.20 x10^6 ml + 12.3 x 10^2 L= My answer is 4.21 x 10^9 2) Change 17.7 L to cubic meters? My answer 1.77 x 10^3 3) Draw an electron dot diagram for K3PO3 My answer K O P O O I couldn't do the dots but there should be 26 dots right? 4) A 35.0 g sample of

asked by Lauren on March 4, 2009
17. physics

An LED is a device that emits light of a particular frequency when the voltage applied across the LED reaches a certain value. This effect can be used to measure Planck’s constant. In the circuit shown below the switch is closed and the potentiometer is

asked by Desmond on August 14, 2015
18. English

I am going to write an article about a semi-famous person. I won't be able to personally interview this person, so all of the information for my article will have to come from other sources. I realize that I will have to give credit to these sources with

asked by Suzette on February 5, 2010
19. math

Part 1:Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime factors? Why? I think it is possible for a composite to have more then one prime factorization Part 2: Give an example of

asked by Luna on September 11, 2017
20. chemistry

A crucible containing potassium chlorate has a mass is 24.426 g. The crucible is heated according to the lab procedure for this week's experiment and is found to weigh 23.642 g. Write an equation for the reaction and, assuming that all the chlorate

asked by Mohammed on October 3, 2011
21. calc-related rates

"The volume of a cone of radius r and height h is given by V=1/2(pi)(r^2)(h)If the radius and the height both increase at a constant rate of .5 cm per second at WHAT RATE in cubic cm per second, is the volume increasing when the height is 9 cm and the

asked by James on March 30, 2010
22. Math (Trig)

a ferris wheel has a radius of 10m and is one meter above the ground. If the ferris wheel makes 1 revolution every 20 seconds, write an equation that gives the height above the ground of a person on the ferris wheel as a function of time if that person

asked by Meg on February 27, 2011
23. physics

9-Volt battery is used to charge a 375 mF capacitor over a 147 Ù resistance. How many seconds will it take for the capacitor to reach 75% of its maximum charge? Hint: The equation below represents the charge of a charging capacitor as a function of time Q

asked by crystal on March 10, 2011
24. chemistry

I need assistance with this question please. "The equation of the line for a graph of voltage (Ecell) versus log[Cu2+] was y= -0.0166x - 0.0082. The voltage of a solution with an unknown [Cu2+] was measured against the same reference cell, under the same

asked by upthecreek on March 15, 2011
25. chemistry

A crucible containing potassium chlorate has a mass is 24.426 g. The crucible is heated according to the lab procedure for this week's experiment and is found to weigh 23.202 g. Write an equation for the reaction and, assuming that all the chlorate

asked by memo on February 13, 2013
26. math

aksed find the equation oft he parabola y=ax^2 + bx +c. there are four given clues 1) the y-intercept is (0,6) 2) the curve goes throuth (4,5) 3) the curve has aturning point at (2,3) 4) the line of symmetry is x=1 a)is it not possible for all four clues

asked by Anonymous on March 5, 2010
27. Algebra

1)An ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has 1 flavor of ice cream, 1 topping, and comes with or without whipped cream. How many different ice cream sundaes can be ordered? A)310 B)372 C)620 D)82 I chose C 2)How

asked by Jon on February 7, 2008
28. physics

A 20. kg block is placed at the top of a 10. meter-long inclined plane. The block starts from rest and slides without friction down the length of the incline. (A diagram shows a height of 5.0 m, the 10. m length of incline/hypotenuse and the 20. kg block

asked by Sejul on March 20, 2011
29. Writing

Please grade my ACT writing test on a scale of 1-Please make corrections and give me feedback. By the way, I wrote this essay in 30 minutes. ACT Test Prompt: Schools in some states have changed their school calendars so that they are now year-round

asked by Anonymous on July 31, 2013
30. ^^Brand Extension^^

wat does brand extension mean? cud u give me an example? Brand extension or brand stretching is a marketing strategy in which a firm marketing a product with a well-developed image uses the same brand name in a different product category. The new product

asked by cassandra on May 19, 2011
31. math

A different eight grader has been asked to work at the face painting booth every half hour. Use division to find how many eighth-graders are needed to work at the face painting booth during the fair. Show your work. I don't understand the division part,

asked by Aswan on March 28, 2015
32. chemistry

If it requires 30.0 milliliters of 1.2 molar HCl to neutralize 20.0 milliliters of NaOH, what is the concentration of the NaOH solution? Balanced equation: NaOH + HCl NaCl + H2O 0.60 M NaOH 0.80 M NaOH 1.3 M NaOH 1.8 M NaOH

asked by Magan on June 22, 2011
33. Science (Biology)

In a species of rodent, fur colour may be black or brown and their tail length either long or short. A pair of rodents were crossed, and their progeny then allowed to interbreed. The result in the F2 were as follows: 29 with brown fur with long tails; 9

asked by Khalid on July 30, 2016
34. Finance

Your firm purchased machinery for \$10 million. The machinery falls into asset class 38, which has a CCA rate of 25 percent. The project will end after 5 years. If the equipment can be sold for \$4 million at the completion of the project and your firm's tax

asked by A on November 23, 2007
35. science-college physics

2. A certain wire of length L, cross-sectional area A is extended by an amount ‘e’ by a force F. Given that the young’s modulus of the material of the wire is E, Show that the; a. Energy stored in the wire is given by the expression (5) b. Energy per

asked by hamunyela morga on April 19, 2016
36. Gr 11 - math linear systems

Word problem: School is raising money for scholarships, with the goal of \$16,000. The plan is to sell event tickets for \$10, and give each person in attendance a ball cap. The cost of the caps is \$2 each. Other expenses add up to \$2,000. The organizing

asked by iza on March 11, 2014
37. math

The value of a new car decreases exponentially.Suppose your mother buys a new car for 22,000. The value of the car decreases by 20% each year. a.what is the initial price of the car. The decay factor. b. write an equation to model the value of the cars

asked by john on October 14, 2012
38. chemistry

QUESTION 11 Ammonia gas is formed from nitrogen gas and hydrogen gas, according to the following equation: N2 (g) + 3H2 (g) Imported Asset 2NH3 (g). If 84.0 g of nitrogen gas is allowed to react with an excess of hydrogen gas to produce 85.0 g of ammonia,

asked by Anonymous on July 11, 2016

the population of a town is decreasing at a rate of 1.8% per year. The current population of the own in 12000. a)write and equation that models the population of the town b)how long will it take for the population to decline to one quarter of its current

asked by james on December 10, 2008
40. physics

A uniform plank of length 5.6 m and weight 203 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before

asked by meredith on June 1, 2007
41. Physics

In a novel from 1866 the author describes a spaceship that is blasted out of a cannon with a speed of about 11.000 m/s. The spaceship is approximately 274 m long but part of it is packed with gunpowder, so it accelerates over a distance of only 213 m. What

asked by Geoff on August 26, 2016
42. chemistry

You are conducting experiments with your x-ray diffractometer. (a) A specimen of molybdenum is exposed to a beam of monochromatic x-rays of wavelength set by the Kα line of silver. Calculate the value of the smallest Bragg angle, θhkl, at which you can

asked by vanesa on December 14, 2012
43. Fundamentals of Law

Assignment Type: Individual Project Deliverable Length: 1-2 pages Points Possible: 130 Due Date: 8/1/2010 11:59:59 PM CT Your sister has come up with what she thinks is a brilliant idea for a home-based business - a website which helps lonely people find

asked by Jennifer on July 28, 2010
44. Calculus

Two particles move along the x -axis. For 0 is less than or equal to t is less than or equal to 6, the position of particle P at time t is given by p(t)=2cos((pi/4)t), while the position of particle R at time t is given by r(t)=t^3 -6t^2 +9t+3. 1. For 0 is

45. Calculus

Two particles move along the x -axis. For 0 is less than or equal to t is less than or equal to 6, the position of particle P at time t is given by p(t)=2cos((pi/4)t), while the position of particle R at time t is given by r(t)=t^3 -6t^2 +9t+3. 1. For 0 is

A diver is on the 10 m platform, preparing to perform a dive. The diver’s height above the water, in metres, at time t can be modelled using the equation h(t)= 10+ 2t - 4.9t^2. a) Determine when the diver will enter the water. b) Estimate the rate at

asked by Ryrin on September 26, 2017
47. chem

Zinc dissolves in acid according to the balanced equation. Zn(s)+ 2H(aq)-> Zn(aq) + H2(g) a sample of zinc is placed in a ice calorimeter. If 0.0657g of zinc causes a decrease of 0.109ml in the ice/water volume of the calorimeter, what is the enthalpy

asked by tomi on October 18, 2008
48. Algebra

Here's another problem I'm having a little trouble with: A piece of string is 40 cm long. It is cut into three pieces. The longest piece is 3 times as long as the middle-sized piece, and the shortest piece is 23 cm shorter than the longest piece. Find the

asked by Celina on November 14, 2008
49. algebra

It's a monomial and we are told to simplify and assume no denominator is equal to zero. its a -10m-1y0r means -10m to the neg. 1 power and y to the 0 power and r. I don't know how to write the powers. that equation is divided by -14m-7y-3r-4.which means

asked by trista on January 21, 2010
50. Algebra

There are three times as many people in the psychology class as in the art history class. there are 16 more people in the algebra class then the art history class The total enrollment of the three classes is 86. How many students are enrolled in each

asked by Christopher on May 7, 2014
51. chemistry

Zinc dissolves in acid according to the balanced equation. Zn(s)+ 2H(aq)-> Zn(aq) + H2(g) a sample of zinc is placed in a ice calorimeter. If 0.0657g of zinc causes a decrease of 0.109ml in the ice/water volume of the calorimeter, what is the enthalpy

asked by tomi on October 22, 2008
52. calculus

A convex lens of a focal length f can be defined by the lens equation 1/f=1/p + 1/q if an object is a distance p from the lens, then the distance q from the lens to the images. For a particular lens, f=2cm and p is increasing find 1. a general formula for

asked by donnie on February 20, 2017
53. chem

Zinc dissolves in acid according to the balanced equation. Zn(s)+ 2H(aq)-> Zn(aq) + H2(g) a sample of zinc is placed in a ice calorimeter. If 0.0657g of zinc causes a decrease of 0.109ml in the ice/water volume of the calorimeter, what is the enthalpy

asked by tomi on October 20, 2008
54. Algebra

Here's the question: Jose needs to enclose a rectangular section of his yard. The area is 35 sq. ft. and the perimeter is 27 sq.ft. Find the length and width of the section. The issue I'm having is that I think I need to find the common fators of 35 and 27

asked by cbarnett on December 19, 2006
55. College Chemistry

The rate constant for decomposition of compound X was determined to be 1.0x10^-4 s-1 at 298 K and 1.0x10^-2 at 365 K. The activation energy for reaction is: I don't know if this is correct 8.314 x 10^-3 x 298x365 divided by 365 - 298 x In 1.0 x10^-2

asked by Elleni on October 27, 2010
56. Math

1. Graph the points A ( -5,0) B ( -4, 3) and C ( 0, -4) A B C D 2. Identify the quadrant in which (3, -6) lies A II B IV C I D III 3. Determine which ordered pair is a solution of y = 2x - 3 A ( -2, 7) B ( 0, 3) C ( -4, -11 D ( 5, -7 5. Graph the linear

asked by Justin on March 23, 2017
57. calculus

the management of a company has decided that the level of its investment should not exceed C dollars. Furthermore, managament has decided that the rate of net investment (the rate of change of the total capital invested) should be proportional to the

asked by mari on April 10, 2012
58. Chemistry

A sample of gas occupies a volume of 63.1 mL. As it expands, it does 130.4 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas? I know that P= 1.03 ATM when converted. I think I'm supposed to use the

asked by Anonymous on January 31, 2013
59. physics

problem says that a cannon ball is fired at a 30 degree angle off a 10 meter high wall at 80 m/s. Use work and energy to find it's impact speed. I worked out this out with the equation: (1/2)(mass)(initial velocity)^2 + mgy = (1/2)(mass) (final velocity)^2

asked by Taylor on November 9, 2010
60. pre algerbra

susan bought a 6 month \$1,700 certificate of deposit.At the end of six months she received \$63 simple interest. what annual rate of interest did the certificate pay? In a year then it would be 2 times \$63 So \$1700 times the rate of interest (we will call

asked by Kemmaris on May 21, 2007
61. algebra 1

Delilah buys an \$18,000 car for her catering business. The equation below shows her earnings after each catering event, where x represents the number of hours worked. y=18x 150 If each event is approximately 5 hours long, about how many events must Delilah

asked by Lalt on February 10, 2012
62. chemistry

If the initial pressure of SO3(g) is 4.775 atm, calculate the % of SO3(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kp at 1000 K is 24.40. The initial pressure of the reaction products is 0 atm.

asked by bme1 on April 7, 2010
63. Math

So this is a math quiz I took a few months ago and they said I can redo it, but I have to explain why the correct answer is correct... And idk. Which equation represents 15 more than r is 61? The answer is r + 15 = 61 but idk why? What is the value of 4^2

asked by Megan on December 16, 2015
64. Chemistry

In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write the balanced chemical equation for the reaction. 2 SO2 + 1 O2 + 2 H2O --> 2 H2SO4 If 5.45 g SO2 react with excess oxygen and water, how many

asked by ChaCha on February 3, 2008
65. chemistry (Bohr model)

The second ionization energy of He is almost exactly four times the ionization energy of H, and the third ionization energy of Li is almost exactly nine times the ionization energy of H: IE (MJ mol-1) H(g) --> H +(g) + e- (1.3120) He+(g) --> He2+(g) + e-

asked by Dylan on February 9, 2015
66. Physics

A 2.0kg wood block is launched up a wooden ramp that is inclined at a 26 angle. The block's initial speed is 8.0 m/s. The coefficient of kinetic friction of wood on wood is 0.200. a) What vertical height does the block reach above its starting point?

asked by senko on October 10, 2012
67. Chemistry

Even when a mechanism is consistent with the rate law , later experimentation may it to be incorrect or only one of several alternative. As an example, the reaction between hydrogen and iodine has the following rate law: rate=k[H]^3[I]2. The long accepted

asked by Munavvar on February 28, 2015
68. English

Thank you very much. I have a few other doubts concerning a paraphrase. Could you please check it? 1) He thinks that even the clear water of the ocean (from Neptune’s ocean?) will not be able to clean his hands and that the blood he has on them will

asked by Henry2 on November 9, 2011
69. Physics

A 580-g squirrel with a surface area of 855 cm2 falls from a 5.2-m tree to the ground. Estimate its terminal velocity. (Use the drag coefficient for a horizontal skydiver. Assume that the cross-sectional area of the squirrel can be approximated as a

asked by Anonymous on June 1, 2016
70. Physics

A 580-g squirrel with a surface area of 855 cm2 falls from a 5.2-m tree to the ground. Estimate its terminal velocity. (Use the drag coefficient for a horizontal skydiver. Assume that the cross-sectional area of the squirrel can be approximated as a

asked by Anonymous on June 1, 2016
71. Cirriculum Development

When Amy's grandmother did die it would be appropriate for her mother to: A. say,"Grandma was very sick but now she's gone. We aren't going to cry about it anymore." B. say,"I know you are sad. So am I. We will miss Grandma,but I am glad she isn't sick

asked by Sierra on December 30, 2006
72. English

1.The hikers are ready for a break. 2.Yesterday we rode our bikes through the park. 3.That store has something for everyone. 4.Students from both South America and North America attended the meeting. 5.According to the map, Tony's farm is just ahead.

asked by Chris on November 8, 2010
73. math

Given A = {1, 2, 3, 4} B = {2, 5, 10, 17}, a E A and b E B The mapping rule for f maps 1 to 2, 2 to 5, 3 to 10 and 4 to 17 (b) Write the mapping rule in the format of the listing method. Display the mapping using the listing format. (c) Write the mapping

asked by simon on October 9, 2007
74. math

Given A = {1, 2, 3, 4} B = {2, 5, 10, 17}, a E A and b E B The mapping rule for f maps 1 to 2, 2 to 5, 3 to 10 and 4 to 17. (A) Write the mapping rule in the format of the listing method. Display the mapping using the listing format. (B) Write the mapping

asked by simon on October 9, 2007
75. chemistry

(a) (i) Draw the abbreviated structural formula, in truncated form, of the compound that would be produced from the reaction of one molecule of glycerol with one molecule each of A, B and C .Circle and name the new functional group(s) produced. What type

asked by mj on September 15, 2011
76. Differential Calculus

Hi pls help me i dunno what to do show me complete solution please please Thank you. a piece of wire 10ft. long is cut into two pieces , one piece is bent into the shape of a circle and the other into the shape of a square. How should the wire be cut so

asked by Ella on March 29, 2015
77. Geography

How natural resources effect the econmy These articles will give you some interesting ideas: http://scholar.google.com/scholar?hl=en&ie=UTF-8&q=Natural+resources+effect+on+economy&spell=1 http://en.wikipedia.org/wiki/Resource_curse

asked by candice sizemore on March 31, 2007
78. History

What was the significance of the Boston Massacre? A. It marked the start of the American Revolution. B. It increased tensions between American colonists and England. C. It brought a temporary end to colonial protests. D. It led England to close the port of

asked by Jimin-Mochi on October 17, 2018
79. Science

I would like to know does this statement makes a good hypothesis for my paper(or)can someone give me some type of insight on how to word it correctly. "My paper will prove that homosexuality is a phenomenon that maybe due to biological factors,

asked by GIGI on March 22, 2007
80. History

In sowing seeds of peace the purpose of the camp on maine can best be decribed as A. to educate Arab and Israeli teens B. to give orphans of families destroyed by conflict a place to meet C. for arab and israeli teens to get to know each other as people

asked by sarah on January 6, 2012
81. math

Explain Sean biked 43 miles on Monday, 23 miles on Tuesday, and 62 miles on Wednesday. How many more miles did he bike on Wednesday than on Monday? Draw a picture and write an equation to solve. Then solve

asked by Emma on October 9, 2014
82. Pre-Cal

Find all the soultions of the equation in the interval (0,2pi) sin 2x = -sqrt3 /2 sin -sqrt3 /2 is 4pi/3 and 5pi/3 in the unit circle 2x= 4pi/3 + 2npi 2x=5pi/3 + 2npi I do not know what to do at this point.

asked by Hannah on February 17, 2010
83. algebra

Solve the exponential equation. Express the solution in terms of natural logarithms. Then, use a calculator to obtain a decimal approximation for the solution. e^x = 20.9 What is the solution in terms of natural logarithms? The solution set is { }.

asked by edward on February 3, 2016
84. algebra 2

suppose a house that costs \$270,000 appreciates by 5% each year. in about how many years will the house be worth \$350,000? use the equation 350 = (270) (1.05)^x and round the value of x to the nearest year.

asked by t on February 7, 2011
85. physics

How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1%? The bulk modulus of water is 2 ~ 10^9 N/m^2 and 1 ATM = 10^5 N/m^2 I think that it is P = bulk modulus * 0.01 because 1/100 = 0.01, which is 1% of

asked by Charlie on December 10, 2008
86. calculus

Find the solution to the differential equation dy/dx = (x^3)/(y^2), where y(2) = 3 I have: The integral of: dy(y^2) = the integral of: dx(x^3) (y^3)/3 = (x^4)/4 The answer is supposed to come out to be y= the cube root of: ( 3/4x + 15 ) Thanks The general

asked by Suzie on May 6, 2007
87. physics

A particle has a constant acceleration of = (5.5 m/s2) + (3.7 m/s2) . At time t = 0, the velocity is zero and the position vector is 0 = (9.8 m). (a) Find the velocity and position vectors as functions of time t. (b) Find the equation of the particle's

asked by emily on August 30, 2011
88. MATH

A biologist is recording the loss of fish in a pond. She notes the number of fish, f, in the pond on June 1. On July 1 there were 63 fish in the pond, which is 52 fewer fish that were in the pond on June 1. Which equation represents this situation?

asked by AMY on November 6, 2014
89. math

a. The sales representative informs you that there is a total of 96 houses for sale. Of these 96, some have one floor plan while the others have a different floor plan. Use x to represent floor plan one and y to represent floor plan two. Write an equation

asked by valerie on March 29, 2011
90. Algebra

1. What is the equation for the line that passes through the point (-5,2) and has a slope of 0? Answer-2 2. What is the slope of the line that passes through the points (-2, 4, 15) and (1, 1.24)? Answer- -2.91 3. Write a funciton rule for the table shown x

asked by lizzie on August 7, 2011
91. math

kyle spent 3 hours each day for 4 days making a song. Write and solve an equation to find the number of total hours Kyle spent making his song

asked by Anonymous on February 16, 2012
92. math

an average person's heart beats about 103, 680 times a day. write and solve an equation to find about how many times the average person's heart beats in a minute

asked by poop on February 3, 2015

1. Graph y =sec(1/2O-2pi)– 3. the O after the 2 has a slash through it 2. Write an equation for tangent given the period, phase shift, and vertical shift. period = 1/3pi , phase shift = –1/4pi, vertical shift = –5

asked by heather on April 24, 2012
94. Physics

A certain resistor has a resistance of 1.484 omega at 20 degrees celsius and a resistance of 1.512 omega at 34.0 degrees celsius. What is its temperature coefficient of resistivity? ok..I used a temperature equation but I can't get the right answer. so

asked by J on February 4, 2008
95. physics

A particle has a constant acceleration of a = (5.5 m/s2)i + (3.7 m/s2)j . At time t = 0, the velocity is zero and the position vector is r0 = (9.8 m)i. (a) Find the velocity and position vectors as functions of time t. (b) Find the equation of the

asked by emily on August 30, 2011
96. Math

The word problem is: Nancy's quiz average is a 74. Her quiz average is 1/4 of her grade. The test average is 3/4 of the total grade. What test average does she need to get at least an 88? Would you be able to set up an equation, and explain how the answer

asked by Coralia on October 1, 2008
97. chem

What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate? (: Begin by writing a balanced equation for the reaction between aqueous sodium bicarbonate and aqueous hydrochloric acid.)

asked by stephen on April 5, 2011

Find all the soultions of the equation in the interval (0,2pi) sin 2x = -sqrt3 /2 sin -sqrt3 /2 is 4pi/3 and 5pi/3 in the unit circle 2x= 4pi/3 + 2npi 2x=5pi/3 + 2npi I do not know what to do at this point

asked by Hannah on February 17, 2010
99. pre-calculus-check over work

1). change to exponential form: log2^256=8; 2^8=256 log0.0001=-4; 10^-4=0.0001 2). change to logarithmic form: 5^3=125; log5^125=3 4^-3=1/64; log4^1/64=-3 3). solve the equation: 3^(x-2)=27^(x+1) 3^(x-2)=(3^3)^(x+1) 3^(x-2)=3^(3x+3) x-2=3x+3 -5=2x -5/2=x

asked by riya on April 21, 2008
100. Organic Chemistry

How do I write a balanced equation for the synthesis of benzoic acid using the grignard reagent. To make the grignard reagent I used 0.5g of Mg, 2 ml of ether, and 3.9g of bromobenze. then to make the benzoic acid I used CO2 and H3O+. I will really

asked by lidia on February 10, 2012