# Questions Asked onJanuary 8, 2012

1. ## math

Pizzaz pg.103 Did you hear about...

2. ## Geometry PARALLELOGRAM question?

If ON=8x-8, LM=7x+4, NM=x-5, and OL=3y-6, find the values of x and y for which LMNO must be a parallelogram. {O is on the left, N is on top right, L is on bottom left and M is on bottom right} Thank You :)

If m

4. ## Physics

a 2.0 x 10^3 -kilogram car collides with a tree and is brought to rest in 0.50 seconds by an average force of 6.0 x 10^4 newtons. What is the magnitude on the impulse of the car durning this 0.50 -second interval?

5. ## AP Chem

At a particular temperature, Kp = 0.25 for the following reaction. N2O4(g) 2 NO2(g) (a) A flask containing only N2O4 at an initial pressure of 5.3 atm is allowed to reach equilibrium. Calculate the equilibrium partial pressures of the gases. (b) A flask

6. ## AP Chem

At a particular temperature, K = 1.00 102 for the following reaction. H2(g) + I2(g) 2 HI(g) In an experiment, 1.23 mol H2, 1.23 mol I2, and 1.23 mol HI are introduced into a 1.00 L container. Calculate the concentrations of all species when equilibrium is

7. ## ukm

The equilibrium constant (Kc) for the gas phase reaction 2 NH3 --> N2 + 3 H2 is 3 x 10-3 at some temperature. The reaction is started by placing a sample of ammonia in an empty one liter flask. When equilibrium is established there is 0.010 mole of N2

If ON=8x-8, LM=7x+4, NM=x-5, and OL=3y-6, find the values of x and y for which LMNO must be a parallelogram. {O is on the left, N is on top right, L is on bottom left and M is on bottom right} Thank You :)

9. ## Parallelogram Question Writing a Proof

given: segment SV is parallel to segment TU and triangle SVX is congruent to triangle UTX [the figure has a V on the top left corner, U on the top right corner, X in the middle of four triangles inside and S on the bottom left and T on the bottom right]

10. ## AP Chem

At a certain temperature, 4.0 mol NH3 is introduced into a 2.0 L container, and the NH3 partially dissociates by the reaction. 2 NH3(g) N2(g) + 3 H2(g) At equilibrium, 2.0 mol NH3 remains. What is the value of K for this reaction?

11. ## geometry

Two sides of a triangle have lengths 8 and 17. Which inequalities represent the possible lengths for the third side, x? a) 9 < x < 25 b) 9 < x < 17 c) 9 < x < 8 d) 8 < x < 17

12. ## pre-calc

Two nonvertical lines have slopes m1 and m2, respectively. The lines are parallel if ___ and the ___ are unequal; the lines are perpendicular if ___.

13. ## Calc

Consider the cubic polynomial y=Ax^3 +6x^2 -Bx, where A and B are unknown constants. If possible determine the values of A and B so that the graph of y has a maximum value at x=-1 and an inflection point at 1.

14. ## trigonometry

A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will

15. ## math-calculus

a plane flew from red deer to winnipeg, flying distance of 1260 km. on the return journey, due to a strong head wind, the plane travelled 1200 km in the same time it took to complete the outward journey. on the outward journey, the plane be able to

16. ## History

What was the basis for Joseph McCarthy’s accusations and investigations?

17. ## AP Chem

The following reaction has Kp = 109 at 25°C. 2 NO(g) + Br2(g) 2 NOBr(g) If the equilibrium partial pressure of Br2 is 0.0159 atm and the equilibrium partial pressure of NOBr is 0.0768 atm, calculate the partial pressure of NO at equilibrium.

18. ## math-calculus

two numbers differ by three and their quotient is 3/4. the larger number is? i not get how to do this.

19. ## physics

1.4 mol of gas at a temperature of -170 degreed celcius fills a 2.9 L container. what is the gas pressure?

20. ## math

Bob sets two alarm clocks (battery-powered) to be sure he arises for his Monday 8:00 A.M. accounting exam. There is a 75 percent chance that either clock will wake Bob. (a) What is the probability that Bob will oversleep? (b) If Bob had three clocks, would

21. ## Physics

Two point charges Q1 and Q2 are 4C. They are 10cm apart. At what distance betwen the charges the net electric field will be zero?

22. ## Trigonometry

Steve and Peggy want to rent a 40 ft x 20 ft tent for their backyard to host a barbecue. The base of the tent is supported 7 ft above the ground by poles and the roped stakes are used for support. The ropes make a 60 degree angle with the ground. What are

23. ## trig

how do you work find sin (a-B)beta sign. sin a = 12/13,a lies in quadrant II,and cos B = 15/17, B lies in quadrant I.

24. ## Physics

A 70.50 kg man rides a Ferris wheel with a radius of 10.3 m at a velocity of 5.00 m/s. What is the centripetal force that she experiences expressed with the correct number of significant figures?

25. ## PARALLELOGRAM WRITING A PROOF

given: segment SV is parallel to segment TU and triangle SVX is congruent to triangle UTX [the figure has a V on the top left corner, U on the top right corner, X in the middle of four triangles inside and S on the bottom left and T on the bottom right]

26. ## Chemistry

The following reaction has Kp = 109 at 25°C. 2 NO(g) + Br2(g) 2 NOBr(g) If the equilibrium partial pressure of Br2 is 0.0159 atm and the equilibrium partial pressure of NOBr is 0.0768 atm, calculate the partial pressure of NO at equilibrium.

27. ## chemistry

At a certain temperature, 4.0 mol NH3 is introduced into a 2.0 L container, and the NH3 partially dissociates by the reaction. 2 NH3(g) N2(g) + 3 H2(g) At equilibrium, 2.0 mol NH3 remains. What is the value of K for this reaction?

28. ## auditing

Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence (Points : 1)

29. ## chemistry

What is the difference in mass between a nickel that weighs 4.8 and a nickel that weighs 4.868 ?

30. ## math

Today only a table is sold at a 28% discount. the sale price is now 666. what was the price yesterday?

31. ## physics

a hydraulic lift is designed for a gain of 100, so that a 10 N force applied at theinput piston will produce a force of 1,000 N at the output piston. If the radius of the input piston is 2 cm, the radius of the output is a) 200 cm, b) .02 cm c) 400 d) 20

32. ## chemistry

Calculate the enthalpy of change, Delta H of rxn, for each of the reactions. record the values in the data table part 2 I calculated the heat of rxn of the HCl +NaOH------NaCl + H2O. How do i go from here to enthalpy of change

33. ## math

classify the triangle with angles measuring 37 degrees, fifty three degrees and 90 degrees

34. ## math

In division, what does it mean to decide to drop, include or use the remainder? Ex: You decide to hang shelves. Each shelf needs 4 brackets. You have 23 brackets. How many shelves can you hang/ What do you do with the remainder, drop, include or use and

35. ## apply skills and rules improving your writing

Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides secretarial

36. ## Algebra 2

For 1985 through 1996, the number, C (in thousands), of videos rented each year in Moose Jaw can be modeled by C= 0.069(t^3+4t^2+37t+600) where t=0 represents 1990. During which year are 60.4 thousand movies projected to be rented? Could someone please

37. ## Chemistry

For the reaction below, an analysis of an equilibrium mixture is performed at a certain temperature. N2(g) + 3 Cl2(g) 2 NCl3(g) It is found that [NCl3(g)] = 1.9 10-1 M, [N2(g)] = 1.4 10-3 M, and [Cl2(g)] = 4.3 10-4 M. Calculate K for the reaction at this

38. ## statistics

A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week. The responses are: 5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6 Compute the three statistics that measure central location

39. ## Chemistry

The LD (subscript 50) for a drug dose that would be fatal for 50% of the population. The LD (subscript 50)for aspirin in rats is 1.75 grams/kilogram of body weight. Calculate how many aspirin tablets a human weighing 155 pounds would have to take to reach

40. ## physics

A typical photovoltaic cell delivers 3.8×10−3 {\rm W} of electric energy when illuminated with 0.14 {\rm W} of light energy. what is the energy efficiency of the cell?

41. ## case management

what are some similarities and differnces of case management in the community setting and in the managed care environment. As i see it, Case management has become a critical element in a community focused mental health system. Case management in the

42. ## math

can u please help me with this math problem. i don't get how to do this question. Mrs. Mabie has a rectangle swimming pool that measures 25 feet by 14 feet. She wants to have a cement walkway installed around the perimeter of the pool. The combined area of

43. ## Precalc

1) expand (1+3x)^4 using the Binomial Theorem. 2) Use Pascal's Triangle to expand(x+2)^5 3)What is the third term of (a+b)^11?

44. ## math gre question

in an infinite series of circles the radius of the second circle is one half the radius of the first circle and the radius of the third circle is one half the radius of the second circle. if the first circle has a radius of one inch which of the following

45. ## chemisstry

1. Show the e- dot structure for CuCl2, I2 and H2O. State the bond type and name. Show charges where necessary.

46. ## MATH

natasha is painting her bedroom, which measures 15 feet by 12 feet and has an 8-foot ceiling. not accounting fo windows and doors, how many square feet will she be painting?

47. ## Maths

The radii of three concentric circles are 2cm, 3cm and 4cm Find the ratio of the shaded areas A (the second circle from the inside) and B(the outer circle) (Hint: don't substitute for pi)

48. ## pre-calc

True or false: Perpendicular lines have slopes that are reciprocals of one another.

49. ## Statistics

Daily output of Marathon’s Garyville, Lousiana, refinery is normally distributed with a mean of 232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels. (a) What is the probability of producing at least 232,000 barrels? (b)

50. ## chemistry

1. Show the e- dot structure for CuCl2, I2 and H2O. State the bond type and name. Show charges where necessary.

51. ## Geometry

A streetlight is mounted on top of a 15 ft. pole. A 6-ft tal man walks away from the pole along straight path. How long is his shadow when he is 40 ft from the pole?

52. ## algebra 101

If The sum of the measures of two complementary angles is 90° and If one angle measures 15° more than twice the measure of its complement, find the measure of each angle. What is The measure of one angle is 1 times the measure of the other. Find the

53. ## physics

The image behind a convex mirror (radius of curvature = 71 cm) is located 24 cm from the mirror. (a) Where is the object located?

54. ## English

• Facts and figures that define the problem (the cause)? • Facts and figures that define the problem (the cause)? Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director,

55. ## calculus ab

The velocity of a particle tralling along the x-axis is given by v(t)=(e^-t)(sin(t)). Find the following a. Compute the net change in distance from time t=1 to time t=3 (this is equivalent to s(3)-s(1) b. compute the total distance traveeled from time t=0

56. ## Trig

The question is: Set up a 2 column proof to show that each of the equations is an identity. Transform the left side to become the right side. a. (tan + cot)^2 = sec^2 + csc^2 I'm having trouble with this. b. (cos + sin)/cos + (cos - sin)/sin = csc sec I'm

57. ## algebra

does any body hav the fith grade math note book if so can u give me a web site at the backof the book to go to if i need to go online and getthe pge and print it of something

58. ## physics

a cube of side L is made of a substance that is 1/4 as dense as water. WHen placed in a calm water bath the cube will a) float with 1/2 L abovethe surface b)sink to the bottom, c) float with 1/4 L above the surface d) float with 1/4 L below the surface e)

59. ## Cubic Equations

I have three that I need help with if possible. 1. Solve 2x^3 - 3x^2 = 6x - 9 2. Find all real and imaginary roots of the polynomial equation 3x^4 - x^3 + 4x^2 - 2x - 4=0 3. Find a cubic equation with integral coefficients and roots 3i and -5.

60. ## algebra

suppose a market research company finds that a price of p=$22, they would sell x=42 tiles each month. If they lower the price to p=$12, then they would purchase the tile and they can expect to sell x=52 tiles in a month. Find the equation of the line for

61. ## Algebra

I am preparing for a quiz and received a small guide (mini guide) over the weekend. So I have all the answers to the questions but I want to learn how to solve this specific problem: 2^(5/2)- 2^(3/2) and the answer is 2^(3/2). To clarify the numbers in the

62. ## history

a.Dollar Diplomacy b.Moral Diplomacy c.Big Stick Diplomacy 1. This policy protected U.S. business interests in the Carribean and Central America by deploying military force to keep order and defend markets. 2. This policy encouraged U.S. businesses to

63. ## 4th grade Math Help

hello, can someone please help with the below math question Mr. brooks brought a box of 66 acorns to class. Can he give 3 acorns to each of the 23 students in his class? Why or Why not? Thanks!

64. ## CHEM

At 1100 K, Kp = 0.25 for the following reaction. 2 SO2(g) + O2(g) 2 SO3(g) What is the value of K at this temperature?

65. ## CHEM

At 1100 K, Kp = 0.25 for the following reaction. 2 SO2(g) + O2(g) 2 SO3(g) What is the value of K at this temperature?

66. ## math-calculus

the formula 1/R = 1/R1 + 1/R2, concerning resistance in an electrical circuit is used in physics. if R = 3 ohms and R1 is 8 ohms more than R2, the value of R1 be? this also not make any sense to me

67. ## English

Thank you very much for your corrections. Here are some more sentences I'd like you to check. 1) An example of a desolate place is Frankenstein’s laboratory, where the scientist is confined in order to create the monster. 2) Frankenstein is not set in a

68. ## Calculus

Integrate tan^6(x)

69. ## History

Describe and evaluate President Eisenhower’s policy regarding Joseph McCarthy.

70. ## math

Paula has been told that the product of the length and width of her house is 900 square feet. Her house is in the shape of a rectangle. Name three possible dimensions of her house.

71. ## math

2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid.

72. ## math gre ques

A sudent is analyzing data from an experiment using a linear model. when the student entered the data into his calculator and ran a least squares linear regression the calculator gave a correlation coefficient of 0.01. what can the student infer from this

73. ## Math

Given P(A) = .70, P(B) = .30, and P(A ∩ B) = .00, find (a) P(A ∪ B) and (b) P(A | B). (c) Sketch a Venn diagram and describe it in words

74. ## trig

solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x = 1 3) cos(arccos x) = 1/3

75. ## writing sentences and paragraphs

Revised Paragraph 2 Let me know if this is better: Anna, I am so happy you’ve moved back to Burlington from Bay view, Ohio! Especially since there are many more job oppurtunities here for you to discover. In fact just yesterday I was talking with my boss

77. ## math-calculus

x^2+9xy+20y^2/x^2+5xy (x+4y)(x+5y)/(x))x+5y) i cancel off x+5y's (x+4y)/(x) that be the anser?

78. ## Algebra

Solve for x and y y=1/3x - 1 x-y=-1

79. ## physics

the force acts on a 50g ball varies with time.if the initial velocity of the particles is 20m/s.what is the average acceleration of ball during this time?

80. ## Math

Incidence rate: Women 125 per 100,000 Men 1.2 per 100,000 This statistic says that for every 100,000 women in the U.S., 125 developed breast cancer. For every 100,000 men, fewer than two developed breast cancer. From these numbers, we can see that breast

81. ## Math

Incidence rate: Women 125 per 100,000 Men 1.2 per 100,000 This statistic says that for every 100,000 women in the U.S., 125 developed breast cancer. For every 100,000 men, fewer than two developed breast cancer. From these numbers, we can see that breast

82. ## AP Chem

At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.580 M, calculate the equilibrium concentrations of the gases.

83. ## writing

whats a memoir

84. ## math

Incidence rate: Women 125 per 100,000 Men 1.2 per 100,000 This statistic says that for every 100,000 women in the U.S., 125 developed breast cancer. For every 100,000 men, fewer than two developed breast cancer. From these numbers, we can see that breast

85. ## science

WHEN A PERSON TRAVELLING ON MOON HIS/HER WEIGHT IS 30KG SO HOW WILL HE OR SHE WILL FEEL ND WHY?

86. ## Trig

Proving Identities: 2 columns (tan + cot)^2 = sec^2 + csc^2 I'm having trouble breaking down the left side to = the right side.. Any help please

87. ## math gre study ques

a student starts with a positive number, x^6, and take the square root three times and the cube root once. this is equivalent to which of the following? a. x^1/4 b. x^4/3 c. x^3/4 d. x^4

88. ## Trig

(sin/cos)/ ( 1/cos - 1) = I'm stumped

89. ## Trig

the horizontal speed of an airplane is 183mph. the magnitude of the plane's velocity is 200mph. write an expression describing the angle the angle the plane is climbing my solution: cos-1 183/200 is this right

90. ## geometry

In the figure below, the length of CB is 64 units and the length of BG is 137 units. What is the length of EA?

91. ## tommy

At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.870 M, calculate the equilibrium concentrations of the gases.

92. ## Writing Sentences and Paragraphs

Here is my Paragraph 1 , It is my good copy just wanna a final check before I submit it. PARAGRAPH 1 According to the job listing in The Daily News, I understand you are seeking a Medical Administrative Assistant to work in Fletcher Allen Hospital in

93. ## Algebra

If Rick’s Automotive charges $50 plus$15 for each (15-min) unit of time when making a road call. Twin City Repair charges $70 plus$10 for each unit of time. Under what circumstances would it be more economical for a motorist to call Rick’s? show all

94. ## math

there are about 20 potatoes ina 5 pound bag a restaurant uses about 2 potatoes per order of french fries they charg 95 cents for an order of fries how much money does the restaurant take in on a day that thay use 400 poundes of potatoes

95. ## math-calculus

15+2y-y^2/3y^2-16y+5 (5-y)(3+y)/(3y-1)(y-5) i factor out a negative one from (5-y) to make it same like (y-5) (-1)(-5+y)(3+y)/(3y-1)(y-5) i cancel off y-5's. and i get (-1)(3+y)/(3y-1) but the real answer have to be 3+y/1-3y what i doing wrong?

96. ## math-calculus

x^2+9xy+20y^2 i never deal with something like this before i come up with (x+4)(x+5) but that wrong because y have to be there how i do this?

97. ## English

I forgot to include the following sentences. Could you please check them, too? 1) It wasn’t frightened of humans. Stay home/at home. (both possible?) I didn’t dare speak/to speak (I think both are possible) 2) He offered to come with me the next day.

98. ## history

what is the most deadly phase of a volcanic eruption like the one at vesuvius (show link to this)

99. ## world history

Political instability between competing states during the period from 1000 to 500 B.C.E. led to A. advances in technology. B. a decrease in trade. C. a decline in new religious practices. D. fewer opportunities for new ideas about society.

100. ## calc

What are the first and second derivatives of y= x^(2/3) * (2.5 - x)

101. ## history

In the movie Lakota Woman- Siege at Wounded Knee; I need to understand what the alienation isues that Mary Crow Dog regarding her family. Do you have any ideas on where I can find this informaton?

102. ## Physics

What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward?

143. ## Physics

If a projectial is fired at such an angle that the vertical componet of its velocity is 49m/s. The horizonal componet of its velocity is 61m/s, then how long will the projectia stay in the air?

144. ## math

i have 5 hundreds and 3 ones i am more than 590 what number iam

145. ## Physics

bobpursley can you show the equasions you are using

146. ## social studies

i am doing a poster project and i am putting the virgina act for establishing religious freedom and i need help finding out what to put for it's caption

147. ## social studies

i am doing a poster project and i am putting the declaration of independence and i need help finding out what to put for it's caption

148. ## Algebra I

Exponential Function. Please show me how to solve: g(t) = -0.5 x 4w (that is 4 to the power of w) w=18

149. ## Calc

What are the first and second derivatives of y= x^(2/3) * (2.5 - x)

150. ## Calc

what are the first and second derivatives for y= x* (4-x^2)^1/2

151. ## math

if the ratio of p to q is 2 to 3, what is is the ratio of 2p to 2q

152. ## chem

Enzymes are proteins that act as catalysts in biological systems. They act most efficiently at temperatures between 36 degrees celsius and 40 degrees celsius. Why is this so?

153. ## math

the inner circumference of a ring is 1.2pi cm. the outer circumference of the ring is 2pi cm. find the area of the region bounded by the outer and inner circumference.

154. ## Physics

A car travels 10.0 m/s. What is its velocity in km/h?

155. ## math

1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long.

156. ## math

a rectangle has a perimeter of 22cm and an area of 30 cubic meter. what are its dimensions?

157. ## alg application

two cars leave the station at 9:00 am. the first car head due south at an avg speed of 54mph. the second car heads due west at an avg speed of 72mph. how far apart will the cars be at 1:00pm? my solution: 360mi is this correct

158. ## math

at the inauguration, the President was honored with a 21-gun salute. the report form each gunshot lasted 1 s. four seconds elasped between shots. how long did the salute last?

159. ## stat counting principles

telephone numbers for a certain city have exchanges of 584, 545, or 586. each of these exchanges is followed by four digits. how many different telephone numbers are possible for this city? a. 3 * 4 b. 3 * 4 * 10 c. 3 * 10^4 d. 3 * 4^10

160. ## algebra

how to solve this two step equation s/12-7=8

161. ## English

Could you please check these sentences, too? Thank you very much. 1)The project was about searching a breeding site for the cheetahs. They followed and pounce (on) their prey without being heard (or seen) in semi-arid grasslands (or grassland?) 2)They live

162. ## biology

what is the correct pathway required for oxygen

163. ## social studies

Who was Michigan's firstgovernor?

164. ## Chemistry

If you place a white tablet in 10 ml of water that is 21 degrees celsius, the tablet bubbles. When it is done the water is now 20 degrees celsius. What reaction occured?

165. ## history

name 2 of the previous names of the modern day city of istanbul (show me link to help me)

166. ## chemistry

I need to convert a word problem that I was given into a balanced chemical equation and cannot figure out how i was type it. The problem is: Nitrogen and hydrogen gases react at extreme temperatures and pressures. Any help?

167. ## Pre-Cal

Find the distance d(P1,P2) between the points P1 and P2. P1= (-2,1); P2= (0,0) P1= (-1,1); P2= (2,2) P1= (-1,0); P2= (2,4) P1= (2,-3); P2= (4,2)

168. ## human services

In the movie Lakota Woman- Siege at Wounded Knee; I need to understand what the alienation isues that Mary Crow Dog regarding her family. Do you have any ideas on where I can find this informaton?

169. ## history

who was the roman who made advancenements in medicine by dissecting animals