# Questions Asked onMay 12, 2013

1. ## Trig

The postal service places a limit of 84 inches on the combined lenght and girth (distance around) of a package to be sen parcel post. What Dimensions of a rectangular box with square cross-section will contain the largest volume that can be mailed?

2. ## applications of vectors

Two people are carrying a box. One person exerts a force of 150 pounds at an angle of 62.4 degrees with the horizontal. The other person exerts a force of 114 pounds at an angle of 54.9 degrees. Find the weight of the box.

3. ## physical chemistry

The system N2O4 2NO2 maintained in a closed vessel at 60º C & a pressure of 5 atm has an average (i.e. observed) molecular weight of 69, calculate Kp. At what pressure at the same temperature would the observed molecular weight be (230/3)

4. ## Physics

Calculate the power of a hair dryer that operates on 120V and draws a current of 10 A.

5. ## Precalc

Find a formula for the nth term if... a)the 8th term is 8 and the 20th term is 44 b) the 8th term is 4 and the 18th term is -96 thanks!! I am just confused how you do this if you don't know what n is.

6. ## chemistry

write a balanced net ionic equation for the overall reaction represented by the cell notation below. Pt/ Fe2+, Fe3+ // I-/AgI/Ag

7. ## math

a square sheet of tin 30cm on a side is to be used to make an open - top box by cutting a small square of tin from each corner and bending up the sides. how large should be the square cut from each corner to make the box's volume as large as possible

8. ## math

Part 1: Write two conditional statements for which the converse is true. 1. Statement: 2. Converse: 3. Statement: 4. Converse: Part 2: Write two conditional statements for which the converse is false. 5. Statement: 6. Converse: 7. Statement: 8. Converse:

9. ## Maths

The second term in the expansion of (1-x)(1+2x)Λn is 19x. Find the value of n

10. ## ashford

16. Functional foods are those containing nutritional supplements in addition to natural nutrients. Examples include orange juice with calcium and eggs with omega-3. Kolodinsky, et al. (2008) examined attitudes toward functional foods for college students.

11. ## physics

A small airplane loses a bolt while traveling at a speed of 150 meters/second in the horizontal direction. The bolt follows a parabolic path and lands on the ground after 25 seconds. How far will the bolt have traveled horizontally from the point where it

12. ## physics

You can paddle at 4.5 km/h and the river is ﬂowing at 3 km/h. How far downstream will you be in 44 min? Answer in units of km

13. ## algebra

Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine,2.44 cross 10^(−5)watts/cm2.

14. ## Pre-calculus

What is the general expression in degrees for the measure of all angles coterminal with alpha when alpha=173 degrees?

15. ## Chemistry

If it takes 54 mL of 0.1 M NaOH to neutralize 125 mL of an HCI solution, what is the concentration of the HCI?

16. ## statistics

Consider a normal distribution with mean 20 and standard deviation 3. What is the probability a value selected at random from this distribution is greater than 20?

17. ## financial alg

Forrest purchased a car for $20,640. He made a down payment of$2,440. He applied for a five-year installment loan with an interest rate of 10.4%. What is the total cost of the car after five years?

18. ## Chemistry

Two gases effuse through a hole. Gas A has 9 times the molecular mass of gas B. What is the ratio of the two molecular speeds?

19. ## math

a fair coin is tossed in the air 4 times. if the coin lands heads up the first three tosses, what is the probability the coin will land heads up the fourth toss? I think it is 1/2 because the coin has 2 sides and 50% it will land on heads. My friend thinks

20. ## science physics

a boy is runnig on a striaght road he runs 500 m towards north in 2 m 10 s and then turns back and runs 200m in1 m calculate the average speed

21. ## math

write as an equivalent decimal or a decimal approximation. 4 12/19

22. ## Math

I made a 95 on a test of 20 questions, but it took 35 tries. What is my real grade?

23. ## life orientation

Provide recommendation on how to address the topic that you identified in the previous question

24. ## life orientation

two institutions/community organizations that are involved in redressing teenage pregnancy

25. ## College algebra

Use the properties of logs to write the expression as one log: 8log(base 5)4th square root of x minus 4log(base 5) x

26. ## College algebra

The radioactive element has a half-life of about 28 years and sometimes contaminates the soil. After 47 years, what percentage of a sample of the elements remain?

27. ## College algebra

The population P of a city has been increasing at an annual rate of 1.4%. It's population was 173 thousand in 1992. A. Find a formula for P(t), where t is the year and P is in thousands. B. Estimate the population in 2010, to the nearest thousand. C. In

28. ## physics

a man pulls a log of mass 45 kg along level ground by means of a rope at constant speed. If the applied force is at an angle of 30 degrees to the horizontal and the force of friction is 36N find the work done by him pulling the log through a distance of

32. ## geometry

write and equation of a line perpendicular to the line y=1/2x+10 and passes through (0,3)

33. ## math

Stacey used her 20% discount card to buy 7 cans of tomatoes and 15 cans of mushrooms for $10.64. The next day Brian spent$ 7.21 on 17 cans of tomatoes and 5 cans of mushrooms in a "30% off" sale. Find the undiscounted pre- sale price of each type of can.

34. ## Mechanics

The cylindrical bar in the figure has a total length L=1.2 m, a diameter d=15 mm, and is confined by fixed supports at the walls A and B. A concentrated axial load FC=30 kN is applied to the bar at point C as indicated in the figure, with LAC>LBC. The bar

35. ## Physics- Simple machines

A wheel and axle arrangement has an axle with a diameter of 25cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes. 1) If the mechanical advantage of the system is 30, determine the diameter of the wheel___________m. 2)Determine the

36. ## Chemistry

how many grams of phosphorus pentachloride are needed to produce 49 grams of phosphoric acid.

37. ## Chemistry

2.76 grams of silver carbonate produced a 50 percent yield of silver oxide. what is the actual mass of this reaction

38. ## Philosophy

Since Jessica’s participation in local politics increased significantly after she joined her school’s political science club, it is clear that her involvement in that club led her to take an interest in politics. The argument above is flawed because

39. ## Math

if cosx equals square root 3 over 2, find sinx

40. ## Physics-Change in Angular Momentum

What is the change in angular momentum of a planet with radius R if an asteroid mass m and speed v hits the equator at an angle from the west, 40 degrees from the radial direction?

41. ## statistics

A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.07 ounce. You can allow the cup to overfill 2% of the time. What amount should you set as the

42. ## Pre-calculus

Given that alpha=(14pi/3) what is the least positive angle coterminal with alpha?

43. ## science

A form of energy that is always transferred from a warmer substance to a cooler one.

44. ## math

Find the number of 6 -term strictly increasing geometric progressions, such that all terms are positive integers less than 1000.

45. ## math

A clock is 4 minutes fast when the correct time is 10am,but it is losing 2 minutess every half hour.What time will it show when the correct time is 4pm.the same day?would u please show me how to work it out,thanks

46. ## Body systems and related conditions

Report for HIV/AIDS

47. ## Science

Metals used in the home and classification. Uses and how they may be cared.

48. ## language

can soemone help me please ? what is one diffrence between the credentials of Jerrilyn Jacobs and Zlata Filipovic a) Jerrilyn Jacobs a younger b) Jerrilyn Jacobs provides a firsthand account c) Jerrilyn Jacobs is a communication expert d) Jarrilyn Jacobs

49. ## Math

How many outcomes are there for rolling a number cube with faces numbered 1 through 6 and flipping 2 quarters?

50. ## PreCalculus

PLEASE HELP ME ASAP!!!!!!!!!!!! :) I really need to remember on how to do this equation. Solve the system algebraically. y=25x^2+x 9x+y=3

51. ## Math

Adam and Bob went apple picking in an orchard. At the end of the day, they counted the number of apples they picked. They realized that if Adam picked 39 more apples, he would have picked twice as many as Bob picked. Also, if Bob picked 39 more apples, he

52. ## physics

A typical baseball has mass of 150 grams. Suppose a batter hits a fastball pitched to him at 92 mph (which is about 40.89 m/s). After contact, the ball's speed is measured as 104 mph (which is about 46.22 m/s) directly back at the pitcher (who is able to

53. ## physics

A helium balloon has a mass of 0.022 kg, which includes both the helium and the balloon itself. On this balloon, there is 0.290 N of buoyant force pushing the balloon upward. If I let go of the balloon, find the balloon's acceleration rate in the upward

54. ## Finance

What would be the initial offering price for the following ( assume semiannual compounding), a 15-year zero coupon bond with a YTM of 12 percent

55. ## Math

The terminal side of an angle alpha (in standard position) contains the point (-3,-4). Find sec alpha.

56. ## physics

Three identical conducting spheres are located at the vertices of an equilateral triangle ABC. Initially the charge the charge of the sphere at point A is q A =0 and the spheres at B and C carry the same charge q A =q B =q. It is known that the sphere B

57. ## Calculus

ç1 0 x^2dx=1/3. Use this and the properties of integrals to evaluate ç1 0 10−2x^2dx

58. ## Pre-calculus

The length of the radius of a circle is 12 cm at the measure of a central angle, alpha, is 5pi/6. What is the length of the intercepted arc?

59. ## Math

6(y²-2) + y < 0

60. ## Chemistry

An 800-mg sample containing sulfate was treated with slight excess of barium chloride, yielding a precipitate that contained 4.3 mg of co precipitated CaCO3. after ignition and cooling, the precipitate weighed 277.0 mg. Calculate the a.) apparent % SO4 b.)

61. ## Symbolic Logic

Even if you know only some of them please help! 1. Give a proof of the following: (∀F)( (P)( [ιxGx][Px] ⊃ F(P) ) ⊃ F(G)) (∃F)( (P)( F(P) ≡ [ιxGx][Px]) Therefore, E!(ιxGx) 2. Prove the following: [ιxMx][Thales believed that Bx]

62. ## Maths

Thanks Mr Reiny

63. ## statistics

a basketball scout randomly selected 144 players and timed how longeach player took to perform a certain drill. The times in the sample were distributed with a mean of 8 mins. The population standard deviation was known to be 3 minutes. Using a 95%

64. ## Physics

Susie weighs 100lbs. Sam weighs 150. The seesaw is 20ft long. The seat on one side only is movable in one foot increments. At what distance from the axis should the seat be placed in order for them to balance? Where should each person sit?

65. ## l.o

3 environmental health hazards

66. ## Calulus

Use the Midpoint Rule with n =3 to approximate the integral ç−1−8(10x−9x2)dx

67. ## Calculus

Estimate ç4 1 ln(x)−3dx using 6 midpoint rectangles

68. ## life orientation

name two organisation that are involed in helping peaple affected by flood

69. ## chemistry

consider a iodometric titration. why we add starch indicator just before the end point????. why cannot we add it before we start the titration???

how would you explain the redeeming value of sexual appeals in advertising? if sexual appeals are considered okay by the targeted audiences, what responsibily does the advertiser have for indirect targets such as children and how can advertisers protect

71. ## science

assign oxidation numbers to each atom in the following compounds : Hi Pbr3 Ges2 Kh AS2O5

72. ## math

How many of the first 1001 Fibonacci numbers are divisible by 3? I know the correct answer is 250....... but i need solution of how it comes out to be 250........ kindly hellp me sooooooooooon

73. ## Life Oriantation

Topic: poverty in the community /in schools, five ways in which the human or environmental problem impacts on the community.provide relevant sources to support your claims.

74. ## chemistry

14. The reaction H2S (aq) = HS-(aq)+ H+(aq) has pK = 7 at 298 K, 1bar. Consider a solution in which total dissolved sulfur is 10^-5 molal. At pH = 3, pH2S =

75. ## math

what is 9.8 convert to ml

76. ## Math

Need help setting up the problem: If you deposited \$800 into a savings account with an interest rate of 3.8%, what will be your balance at the end of 1 year. I was thinking the overall answer is 830.40 but you are supposed to use a percent equation and a

77. ## phoenix

Each sample has n= 5 scores with s2 =38 for the first sample and s2 = 42 for the second. (Note: Because the two samples are the same size, the pooled variance is equal to the average of the two sample variances.)calculate how much difference should be

78. ## Life orientation

Ways in which smoking impacts on your community

79. ## life orientation

Name two intitutions/community organizations that are involved in supporting or giving redress to teenage pregnancy.explain how these organizations are involved in providing a safe and healthy environment.

80. ## physics

the greatest accerlation or decerlation that a train may have is a.the minimum time in which the train can start from one station from other is > i need it with steps..

81. ## Chemistry

How many grams of nitric acid (HNO3) must be dissolved in 740 mL of water to make a solution with a pOH = 8.3?

82. ## Physics

What is the change in angular momentum of a planet with radius R if an asteroid mass m and speed v hits the equator at an angle from the west, 40 degrees from the radial direction?

83. ## Math (Algebra) (Distance Between 2 Lines)

If real numbers a and b satisfy a^2 + b^2 = 64, what is the distance between the lines ax + by = 1 and ax + by = 417 ?

84. ## Statistics

A simple random sample of 50 students is taken from a class of 300 students. In the class, * the average midterm score is 67 and the SD is 12 * there are 72 women Let W be the number of women in the sample, and let S be the average midterm score of the

85. ## Math (Algebraic Manipulation)

An operation produces A−1/A from a fraction A= m/n, where m ≠ n and m ≠ 0. If the initial value of A is 24/47 and the operation is repeated 2012 times, the final output is a/b, where a and b are coprime positive integers. What is a+b?

86. ## Statistics

City A has 1,000,000 people; City B has 4,000,000 people. Suppose the goal is to try to predict the percent of Purple Party voters in a sample. Other things being equal, a simple random sample of 1% of the people in City A has about the same accuracy as a

87. ## Math (Calculus) (Implicit Differentiation)

The equation of the line tangent to (x^2+y^2)^4=16x^2y^2 at (x,y)=(−1,1) is ay = bx + c, where a, b and c are positive integers. What is the value of a+b+c?

88. ## math

Which fraction is greater than one whole? a. 1/7 B. 6/5 C. 9/9 d. 13/15

89. ## life orientation

critically discuss five ways in which water pollution impacts on the community,provide relevant sources to support your claims.

90. ## Math

Wich fraction is less than one whole? a. 12/11 b. 3/3 c. 13/7 d. 7/8

91. ## math

Lori has 3 red balloons, 1 white balloon, and 6 blue balloons. Which balloon color is 3/4 of the group? a. white b. blue c. green d. red

92. ## math

Witch fraction represents the same amount as 1/2 ? a. 1/4 b. 2/4 c. 2/1 d. 3/2

93. ## math

Which fraction represents the same amount as 5/5 ? a. 10/5 b. 5/1 c. 10/10 d. 1/5

94. ## math

Which equivalent fraction makes this number sentence true? 2/3=4/6=? a. 5/7 b. 8/12 c. 6/12 d. 10/5

95. ## math

Which sign goes in the box to make the number sentence true? 7/8 ? 1 a. = b. + c. > d.

96. ## life orientation

In 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community

97. ## math

Which sign goes in the box to make the number sentence true? 3/4 ? 6/8 a. > b. < c. = d. +

98. ## math

Which number sentence is true? a. 5/14=5/9 b. 5/14>5/9 c. 5/9>5/14 d. 5/9=5/14

99. ## math

Which number sentence is true? a. 5/14=5/9 b. 5/14>5/9 c. 5/9>5/14 d. 5/9=5/14

100. ## Physics

What is the net upward force on an airplane wing of area 22.0 m2 if the speed of air flow is 315 m/s across the top of the wing and 270 m/s across the bottom?

101. ## math

Doyle,Lena, and Juan played checkers 12 times. Doyle won 1/2 of the games, Lena won 5/12 of the games, and Juan won 1/12 of the games. Who won the least number of games? a. Lena b. Juan c. Doyle d. Cannot besolved

102. ## math

Elijah draws shapes on his graph paper.He draws a square with sides 1/2 inch long. He draws an equilateral triangle with sides that are 1/4 inch long. What is another measurement that describes the length of the triangle's sides ? a. 2/1 inch b. 2/2 inch

103. ## math for laboratory science

Determine the quantity of stock 75.0% v/v EtOH required to prepare 300ml of a 25.0% v/v EtOH solution

104. ## music

HOW DO I IDENTIFY INTERVALS???? I need to know major, minor, augmented, diminished, and perfect. so here is what I kind of understand so far: PU: 0 half steps P4: 5 half steps P5: 7 half steps P8: 12 half steps, and for any one of these to be diminished,

105. ## physics

What is the temperature of 0.54{\rm mol} of gas at a pressure of 1.3{\rm atm} and a volume of 10.9{\rm L} ?

106. ## Math

Alice writes an addition problem, adding two 2-digit counting numbers to get a sum of 134. Bob erases the tens digit of one of Alice's addends, adds again, and gets a sum of 84. What is the smallest possible value for the larger of Alice's two addends?

107. ## Math

Malia puts together six 4-by-4-by-1 inch square layers with 1-inch cubes, then stacks them up to form a rectangular prism. This prism rests on a wooden table, on its square base. All the 1-inch cubes Malia used are white except one, which is red. As a

108. ## chemistry (ionic eq.)

what mass of Pb^2+ ion is left in solution when 50 ml of 0.2M PbCl2 is added to 50ml of 1.5 NaCl?[Ksp for PbCl2= 1.7* 10^(-4)]

thanks for helping me! You spin the spinner twice. draw a tree diagram and list sample spaces to show the possible outcomes. From that answer questions 1,2 and 3. The spinner is 4 equal parts for a, b, c ,d I know the tree diagram- you Have a,b,c,d, and

110. ## Happy mother's day

To Ms Sue and Ms Reiny, who have helped me with homework questions in the past Happy mother's day. To all the other tutor's who are also mother's that have not helped me yet, happy mother's day to you too. Enjoy!

111. ## Life Orientation

In 10-15 lines critically discuss 5 ways in which HIV/AIDS impacts on the community.Provide relevant sources to support your claims

112. ## Math

There are 6 members in a club and only 4 computers.Club meets for 60 minutes. Each member wants equal computer time. How much time should each student have?