# Questions Asked onFebruary 10, 2013

1. ## Statistics

The lengths of pregnancies are normally distributed with a mean of 273 days and a standard deviation of 20 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 273 days and 275 days.

2. ## Statistics

The body temperatures of adults are normally distributed with a mean of 98.6 degree F and a standard deviation of 0.60 degree F. If 36 adults are randomly selected, find the probability that their mean body temperature is greater than 98.4 degree F.

3. ## Statistics

If the probability of a newborn child being female is 0.5, find the probability that in 100 births, 55 or more will be female. Use the normal distribution to approximate the binomial distribution.

4. ## Ronit

What is the current through a wire if 240 coulombs of charge pass through the wire in 2.0 minutes?

5. ## maths

a chimney of 20m height standing on the top of a building subtends an angle whose tangent is 1/6 at a distance of 70m from the foot of the building find the height of the building .

6. ## Chemistry Help

The ΔHvap of a certain compound is 34.68 kJ·mol–1 and its ΔSvap is 93.60 J·mol–1·K–1. What it the boiling point of this compound?

7. ## Chemistry

Consider the following equilibrium: PCl3 (g) + Cl2 (g) yields PCl5 (g) delta H= -92KJ The concentration of PCl3 at equilibrium may be increased by: decreasing the temp (think this is it) adding Cl2 to the system the addition of neon the additio of PCl4

8. ## chemistry

A definite amount of NH4cl was boiled with 100ml of 0.8N naoh for complete reaction . After the reaction mixture containing excess of naoh was neutralized with 12.5ml of 0.75N NH2so4. Calculate the amount of NH4cl taken. I want you to explain about 100ml x

9. ## Chemistry

At 900.0K, the equilibrium comstant (kp) for the following reaction is 0.345 2SO2 (g) + O2 (g) yields 2SO3 (g) At equilibrium the partial pressure of SO2 is 35.0 atm and that of O2 is 15.9 atm. What is the partial pressure of SO3 in atm? 6.20 X 10-4 ( I

10. ## Chemistry

Are my answers correct? C6H14 + 19/2 O2 -> 6 CO2 + 7H2O enthalpy change = -4163 kJ a) if 0.537 mol of carbon dioxide is produced in the reaction represented by the equation above, how much heat is released by the reaction? Enthalpy change = 0.537 mol CO2 x

11. ## Chemistry

When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m. -2.16 x m/-1.86 = 1.16 1.16/ .010 kg of water= 116 1.150/116=

12. ## Chemistry

2C2H2 + 5O2 -> 4CO2 + 2H2O + energy What does the equation communicate about the relative energy of the chemical bonds in the reactants and products? The intermolecular bonds of the reactants are weaker than that of the products' because the products'

13. ## chemistry

if thermometer is miscalibrated to read 1.0 degree celsius higher than actual temperature over its entire scale how will it affect molar mass of solute?

14. ## Math 120

Suppose there is a pile of quaters, dimes, an pennies with a total is \$1.06, How much of each coin can be present without being able to change for a dollar? If there are multiple selection of coins that will work

15. ## STAT

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. For

16. ## Calc

A a conical container of radius 5ft and height 20ft is filled to a height of 18ft of a liquid weighing 50.6lb/ft^3. How much work will it take to pump the contents to the rim? How much work will it take to pump the liquid of a level of 2ft above the rim?

17. ## Physics

A dropping ball initial at rest is dropped 1.5m; calculate a) the traveling time of the ball and b) its velocity just before reaching the ground.

18. ## Pre calculus

Verify Sinx-sinxcos^2x =sin^3x Need every step!!!

19. ## Chemistry

Consider the following equilibrium: NH4Cl(s)--->NH3(g) + HCl(g) Suppose a vessel containing NH4Cl(s), NH3(g) and HCl(g) is at equilibrium. If the volume of vessel is instantaneously doubled while keeping the temp constant when a new equilibrium is reacted,

20. ## trig

Two people decide to estimate the height of a flagpole. One person positions himself due north of the pole and the other person stands due east of the pole. If the two people are the same distance from the pole and a = 30 feet from each other, find the

21. ## Chemistry

2NF3(g) yields N2(g) + 3F2(g) When 2.06 mol of NF3 is placed in a 2.00L container and allowed to come to equilibrium at 800K, the mixture is found to contain 0.0227 mol of N2. What is the value of Kp at this temp? 1.91 X 10-3 1.73 X 10-6 (think this is it)

22. ## Math

One bottle of shampoo costs \$6 for 8 ounces. A second bottle costs \$4 for 5 ounces of shampoo. Which has the lower unit rate? How much lower?

23. ## math

graph the line with slope 1/2 passing through the point(-5,-2) find the slope of the line 5x+5y=3 write answer in simplest from consider the line 2x-4y=4 what is the slope of a line perpendicular to this line. what jis the slope of a line parallel to this

24. ## physics

The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a

25. ## finance

Tater and Pepper Corp. reported free cash flows for 2012 of \$43.1 million and investment in operating capital of \$26.1 million. Tater and Pepper incurred \$14.0 million in depreciation expense and paid \$29.7 million in taxes on EBIT in 2012. Calculate Tater

26. ## Chemistry

2. What is pH? A.) the negative logarithm of the hydrogen ion concentration B.) the positive logarithm of the hydrogen ion concentration C.) the negative logarithm of the hydroxide ion concentration D.) the positive logarithm of the hydroxide ion

27. ## Physics

The three forces shown in the figure below act on a particle (with F1 = 50.0 N, F2 = 60.0 N, θ1 = 60.0°, and θ2 = 30.0°). If the particle is in translational equilibrium, find F3, the magnitude of force 3 and the angle θ3.

28. ## chemistry

A definite amount of NH4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reactant mixture containing excess of naoh was neutralized with 12.5ml of 0.75N nh2s04. Calculate the amount of nh4cl taken. The answer 3.78g who

29. ## chemistry

Silicon carbide is one of the hardest materials known. It is often known commercially as carborundum. Silicon carbide is used primarily as an abrasive for sandpaper and is manufactured by heating common sand (silicon dioxide, SiO2) with carbon. - What mass

30. ## college algebra

Please show me the steps to solving this equation:-) √5(x-1.2)-√3x

31. ## Chemistry

Because the mass of the reactants equal to the mass of the product of a reaction, the number of moles will be conserved. -I think this is sometime true but I don't know a way to prove that it sometime true. Anyone got an idea ? Thanks

32. ## STAT

Do you view a chocolate bar as delicious or as fattening? Your attitude may depend on your gender. In a study of American college students, Rozin, Bauer, and Catanese (2003) examined the importance of food as a source of pleasure versus concerns about food

33. ## Chemistry

A solution contains 10.0 g pentane, C5H12, 10.0 g hexane, C6H14 and 10.0 g benzene, C6H6. What is the mole fraction of hexane? I figured the equation would be: ___ M Hexane x 10 Divided by 30 =Mole fraction of Hexane?

34. ## math

A disc-shaped spinner has five sections with the following colors and central angles: Blue, 60; Red, 120; Green, 45; Red, 45; and Yellow, 90. Determine the probability for one spin of the spinner. P(B U G)

35. ## finance

Thelma and Louie's Inc started the year with a balance of retained earnings of \$547 million and ended the ear with retained earnings of \$594 million. The company paid dividends of \$37 million to the preferred stockholders and \$77 million to common

36. ## Chemistry

HCl (aq) + NaOH (aq) -> NaCl (aq) + H2O (l) Will the neutralisation reaction be endothermic or exothermic? Hint: think about the net ionic equation. So, taking the hint, I got: OH- + H+ -> H2O Not sure how that helps, and now I'm stuck; how would I figure

37. ## Statistics

There are two different formulas or methods that can be used to calculate SS. under what circumstances is the definitional formula easy to use?

38. ## Speech 09

I need to create a communication model in my speech class. My characters are Scout and Jem (TKAM) I need to write a communication model script. It should have these words in them: Context, message, feedback, channel, Encode, Decode, receiver, sender,

39. ## chemistry

2KI+Pb(NO3)2=2KNO3+PbI2 suppose a solution containing 1.25g of KI is combined with a solution containing 2.42g Pb(NO3)2 _what mass of the yellow PbI would result what is the limiting reactant How much in grams of the excess reactant was used how much in

40. ## chem

A certain first-order reaction has a rate constant of 2.75 10-2 s−1 at 20.°C. What is the value of k at 50.°C if Ea = 75.5 kJ/mol? i know to use the ln(k1/k2)= (ea/R)((1/T1)-(1/T2)) but how do i know what T2 is when i only have one temp? there is a b

41. ## chemistry

Which of the following is not an example of a science? geology astronomy astrology ecology

42. ## chemistry

an aqueous solution contains 1 mol of S2O3 ions and this reduces 4 mol chlorine molecules.What is the sulphur containing product of this reaction?

43. ## calculus

Find the values of p for which the following series is convergent. The sum from n=2 to infinity of 1/(n(ln(n))^p). I tried the integral test using u-substitution, and I know the answer is p>1, but I'm not quite sure how to get there. Thanks for the help.

44. ## Chemistry

What is the vapor pressure of a aqueous solution containing 10 % (by weight) ethylene glycol (62 g/mol) at 25 °C. PH2O = 24.3 torr at 25°C?

45. ## physics 11

A girl stands 2.5 m infront of a plane mirror. If she steps 0.5 m farther away from the mirror, how far will she be from her image?

46. ## Math

Explain It Why is 10-0=10, but 0/10=0? Explain

47. ## MATH116

Two forces of magnitudes 60 Newtons and 80 Newtons make an angle of 30 with each other and are applied to an object at the same point. Find the following: 1. the magnitude of the resultant force, and 2. to the nearest degree the angle it makes with the

48. ## Chem

Calculate the reaction quotient Q,for the cell reaction.The measured cell voltage is given.balane the chemical equation by using the smallest whole number coefficients. (a) Pt(s)Sn4+(aq),Sn2+(aq)||pb2+(aq),pb2+|C(graphite)(s) -E=+1.33V

49. ## MATH

The formula for the area of a circle and the volume of a sphere an be though of as functions of the radii of the shapes. (Anything you could answer would be so helpful) Thank you!! a) Write a rule expressing the area of a circle as a function of its

50. ## physics

A car is traveling at 25m/s when an accident occurs. The car decelerates 300m/s^2 but the passenger does not slow down because he is not wearing a seatbelt. a) Supposing the distance between the passenger and the dashboard is initially 0.50m, what will be

51. ## physics

As your bus rounds a flat curve at constant speed, a package with mass 0.900 , suspended from the luggage compartment of the bus by a string 46.0 long, is found to hang at rest relative to the bus, with the string making an angle of 27.0with the vertical.

52. ## Chemistry

Please help me figure out where I went wrong. HNO3 + KOH -> KNO3 + H2O enthalpy change = -53.4 kJ/mol 55.0 mL of 1.30 mol/L solutions of both reactants, at 21.4°C, are mixed in a calorimeter. What is the final temperature of the mixture? Assume the

53. ## chem

The activation energy of a certain reaction is 65.7 kJ/mol. How many times faster will the reaction occur at 51°C than at 8°C? State the assumptions you need to make in order to perform this calculation. (Select all that apply.) The collision model and

54. ## Math_100

Would you rather have \$200 base 10 or \$1000 base on 5? What would be the base for \$200. Which I would be better of the two choices

55. ## college algebra

I need to figure out how to solve this equation your help will be much appreciate:-) √5(x-1.2)-√3x

56. ## chemistry

Which of the following is not an example of a science? geology astronomy astrology ecology

58. ## Chemistry

The first-order rate constant for the decomposition of N2O5, 2N2O5(g) --> 4NO2(g) + O2(g), at 70 degrees C is 6.82 x 10^-3 s^-1. Suppose we start with .0208 mol of N2O5(g) in a volume of 2.2 L. How many minutes will it take for the quantity of N2O5 to drop

59. ## Math

Jason is 20 years old. He is 4 times older than his younger brother. Which of the following equations could be be used to figure out the age of Jason's brother? a.20x4 b. 20+4 c. 20 divided by 4 d. 20-4 My answer is A. is that correct?

60. ## physical science

a metal power/laundry line which hang droop on a very warm day

61. ## Physics

A positive and a negative charge are separated a distance r. What can we say about the electric potential energy of this two-particle system, according to our normal definitions of potential energy and work? Select the best answer. a. It is positive b. It

62. ## Physics

Three charges are located at the corners of a rectangle as follows: Charge A: lower left corner, -3.0 Î¼C Charge B: upper left corner, -6.1 Î¼C Charge C: upper right corner, +2.7 Î¼C The distance between A and B is 0.16 m and between B and C it is

63. ## physics

A point charge of -4.00 is at the origin, and a second point charge of 6.00 is on the axis at = 0.850 . Find the magnitude and direction of the electric field at each of the following points on the axis. a) x=25.0cm b) x=1.10m c) x=-15.0cm

64. ## MATH

find a counterexample to prove the following is false: x is less than or equal to 2x

65. ## Physics

You run a race with your friend. At first you each have the same kinetic energy, but then you find that she is beating you. When you increase your speed by 21.0%, you are running at the same speed she is. If your mass is 77.0 kg, what is her mass?

66. ## physics

The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save

67. ## Algebra

simplify 9to 6th power times 3 to the 7th power all over 9 to the 8th power times 3 to the 6th power

68. ## Speech 09

I need to create a communication model in my speech class. My characters are Captain Hook and Peter Pan. I need to write a communication model script. It should have these words in them: Context, message, feedback, channel, Encode, Decode, receiver,

69. ## ap chemistry

Iron pyrite (FeS2) is the form in whichmuch of the sulfur exists in coal. In the combustion of coal, oxygen reacts with iron pyrite to produce iron(III) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to

70. ## Physics

Light from a sodium lamp (lambda = 589 nm) illuminates two narrow slits. The fringe spacing on a screen 150 cm behind the slits is 4.0 mm. What is the spacing b/w the two slits (in mm)?

71. ## PHYSICS

You drop a ball from a height of 2.8 m, and it bounces back to a height of 1.4 m. (Ignore air resistance.) (a) What fraction of its initial energy is lost during the bounce? (b) What is the ball's speed just as it leaves the ground after the bounce? m/s

72. ## Trigonometry

Solve the trigonometric equations. 1.) SIN²x(CSC²x-1) 2.) COT x SEC X 3.) COS²[(π/2)-x]/COS X (Note: These mathematical problems are somewhat tricky, but useful for students as of learning how to their fundamental identities. Let's enjoy solving these

73. ## math

A box contains 1 blue, 2 green, 1 red, and 2 yellow marbles. An experiment consists of randomly selecting two marbles without replacement. What is the probability of not obtaining a yellow marble?

74. ## Chemistry

What is the molality of an aqueous solution that is 10.0% ethanol, C2H5OH, by mass?

75. ## english

Where can I find informative texts? (Long once)also informative text about fiction...

76. ## Math

Two boats leave a dock at the same time. One heads due east at 20 mph, and one heads due south at 15 mph. How far apart are the two boats after 45 minutes have elapsed?

77. ## physics

A train at rest emits a sound at a frequency of 1089 Hz. An observer in a car travels away from the sound source at a speed of 30.7 m/s. What is the frequency heard by the observer? Assume the speed of sound in air to be 343 m/s.

solve 6x-2x^3 with first principal

79. ## MATH

Find the value of (x) ? 0 = (300,000x / (16 + x^2) ^0.5) - 200,000

80. ## Nurs

i need to draw a concept map that represents the relationships among the concepts under study for either Middle-range theory, Grand theory, or practice theory. HELP!

81. ## math

If the digits of a number may be any one of 0 through 9 (except the first digit cannot be zero), and the system of alternating signs of coefficients is used to create a polynomial, what is the least number m of real zeros the polynomial can have? What is

82. ## chemistry

20% of HNO3 reacts with 10g of Caco3 by weight then find the quantity of HNO3?

83. ## physics

The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a

84. ## math

If the digits of a number may be any one of 0 through 9 (except the first digit cannot be zero), and the system of alternating signs of coefficients is used to create a polynomial, what is the least number m of real zeros the polynomial can have? What is

85. ## physics

The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a

86. ## physics

A 1-m-tall barrel is closed on top except for a thin pipe extending 5 m up from the top. When the barrel is filled with water up to the base of the pipe ( 1 m deep ). The water pressure on the bottom of the barrel is 10 kPa. What is the pressure on the

87. ## Biology

DNA synthesis starts at the Replication Origin. In what way(s) do you think that the Replication Origin might be similar to a Promoter and in what ways might it be different?

88. ## Precalculus

The application of one function followed by the application of a second function to the result of the first as in F^-1(f(x)) is called composition of functions. The two functions need not be inverse of each other. In a diagram, the output of one function

89. ## Math

Explain It Adam made 19 paper cranes Monday and 8 more Tuesday. He gave 9 friends an equal number of cranes. How many cranes did each friend received? Explain how you found your answer.

90. ## algebra

Can someone please help me solve (2f^2 g^3) ----------- 4 (3fg) posed to be a fraction bar with the four on the outside of the ()

91. ## physics

In nuclear fission, a nucleus splits roughly in half. (a) What is the potential 4.00 10-14 m from a fragment that has 58 protons in it? (b) What is the potential energy in MeV of a similarly charged fragment at this distance?

92. ## physics

In nuclear fission, a nucleus splits roughly in half. (a) What is the potential 4.00 10-14 m from a fragment that has 58 protons in it? (b) What is the potential energy in MeV of a similarly charged fragment at this distance?

93. ## mechanics of materials

A flat plate specimen of a soft metal alloy is to be tested by pulling on round pins inserted through the ends of the plate, as illustrated below (a) Calculate the required diameter of the pins, given that the plate is 8.0 mm thick, the maximum tensile

94. ## statistics

this is a problem in my statistics class, and I am lost to me, it is confusing or missing something here is the problem please help grade points are assignede as follows: a=4,b=3,c=2,d=1,f=0. grades are weighted according to credit hours. if a student

95. ## mechanics of materials

A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a)

96. ## chemistry

HCOOH(aq) H^+ (aq)+ HCOO^-(aq) The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3

97. ## Math/algebra class

You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class in Berks Hall? 1)

asked by Urgent! running out of time....
98. ## Education/Technology

Removable media are useful for a classroom teacher because they A) are read only. B) cannot be erased accidentally. C) have the greatest capacity of any storage device. D) are portable. I believe the answer is A, is this correct?

99. ## MATH

What is the first derivative of L(x) = ((4+x^2)^0.5) + ((25 + (10-x)^2)^0.5)

100. ## science

Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 3.8). The empty capacitor is connected to a 16 -V battery. What must be the potential difference across the plates of the capacitor filled with a

101. ## math 7

if you have 8 marbles in the bag (5 blue and 3 green) and you draw 2 with replacement, what is the theoretical probability that both marbles wil be green how does the probability of getting two greens change if you are not replacing?? if you have 8 marbles

102. ## MATH

find the first derivative for P(x) = a + b (100-x) (x-c) where a and b is positive constant

103. ## math

This year Martin is twice as old as his sister. If Martin is 12 years old then how old will his sister be next year

104. ## SOC203

Which of the following types of income is NOT protected from the low taxation rate of the capital gains tax? (Points : 1) Real estate profits Bonds Salaries Stock investments

105. ## Physics

Two identical point charges (q = +4.60 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.510 m. A test charge (q0 = -4.80 x 10-8 C), with a mass of 9.80 x 10-8 kg, is released from rest at one of the corners of the square.

106. ## can any smart person in c++ can answer this?

A “magic” number is an integer in which the number is equal to the sum of the cubes of its digits. Write a program to determine whether a three digit number entered by the user is a magic number.

107. ## Math

Working on a problem and can't figure out how the book rearranged this problem to get the following: 0.76= x/0.0200-x then, the book rearranged to solve for x... x= 0.0200 X 0.76/ 1.76 I don't understand how 1.76 was obtained? I see that you cross multiply

108. ## Physics Conservation of Energy

During a rockslide, a 740 kg rock slides from rest down a hillside that is 500 m long and 300 m high. The coefficient of kinetic friction between the rock and the hill surface is 0.18. (a) If the gravitational potential energy U of the rock-Earth system is

109. ## AMBIGUOUS CASE OF SINE LAW

Triangle DEF where triangle E = 144 degrees, e = 10.5m and f = 12.5m. Determine the number of possible triangles that could be drawn with the given measures. Then, find the measure of the other angles in each possible triangle.

110. ## finance

Thelma and Louie's Inc started the year with a balance of retained earnings of \$547 million and ended the ear with retained earnings of \$594 million. The company paid dividends of \$37 million to the preferred stockholders and \$77 million to common

111. ## Algebra

There are 21 people. The number of adults is 3 fewer than 5 times the number of children. How many adults are there? How many kids are there?

112. ## Physics

The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -5 x 10-9 C placed at corner A and then at

113. ## AP Chemistry

0.015 moles of a compound are dissolved in 18 fl. oz. of water. At what temperature will the solution begin to freeze? The density of water is 1.00g/mL

114. ## physics

A 80 g ice cube at 0°C is heated until 55 g has become water at 100°C and 25 g has become steam at 100°C. How much energy was added to accomplish the transformation?

115. ## Chemistry

Explain the raise of bonding angle in these molecules: HF, H2O, NH3 and CH4

116. ## math

mike measured 2/3 cup of milk. what is 1/4 of the amount of milk?

117. ## Math Probability

5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones

118. ## Science

Need help with a research topic for a paper on conservation of fresh water. I have to include two disciplines of classes - history and human and family development. Also, I need to integrate a theory - Bandura's theory of modeling? Can anyone help me?

119. ## Math-Statistics

An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?

120. ## Chemistry

Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.200 M HClO(aq) with 0.200 M KOH(aq). The ionization constant for HClO can be found here. A. Before any addition of KOH B. After addition of 25.0 mL of KOH C. After 30.0 mL of

In portfolio analysis, the goal when purchasing leverage items is

122. ## Probability Help!!!

5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones

123. ## economic

Robert withdrew \$100,000 from an account that paid 10 percent annual interest and used the funds to purchase real estate. After one year he sold the property for?

124. ## algebra

When a tennis ball is dropped, it rebounds to 70% of its initial height. If we drop a tennis ball from 10 ft, determine the total distance traveled by the ball after 10 bounces.

What do labeling theorists say about the treatment of the disabled by society? Be sure to address, and give examples of, overt and covert ways that society labels people with disabilities.

126. ## life Orientation

What, according to the Basic Conditions of employment Act applies with regard to the contraventions that you've identified?

127. ## Physics

A container having a volume of 1 m3 holds 90 mol of helium gas at 176 ◦ C. Boltzmann’s constant is 1.38 × 10 −23 J/K. Assuming the helium behaves like an ideal gas, what is the average kinetic energy per molecule? Answer in units of J

128. ## algebra

what is a subponent

129. ## SOC

The Industrial Revolution enticed people to

130. ## math

A family group of 6 went to a show. Tickets for adults are \$6. Tickets for children are \$4 dollars. The family spent \$30 dollars on tickets. How many adult and children tickets did they buy?

131. ## Jess

Let f(x)=3x^3 +7.5x +1. In this problem you will estimate f'(3) by computing the average rate of change of f(x)over a small interval. Round your answers to three decimal places. First choose the interval of length .1 with 3 being the left endpoint of the

132. ## conceptual physics

The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save

133. ## math

2.58*10^(-5)watts/cm2 find the number of decibels for the power of the sound given. Round to the nearest decibel.

134. ## Chemistry

What happen when the pink stock solution is heated in a water bath?

135. ## Chemistry

What would be the pH of a soda water made by saturating pure water with pure CO2 at 1 atm pressure?

136. ## physics

In an arcade game a 0.144 kg disk is shot across a frictionless horizontal surface by com- pressing it against a spring and releasing it. If the spring has a spring constant of 164 N/m and is compressed from its equi- librium position by 7 cm, find the

137. ## accounting

I need help, do not want the answer just stuck on how to solve this one. Here is the problem Elkins Company sold \$2,500,000, 8%, 10-year bonds on July 1, 2011. The bonds were dated July 1, 2011, and pay interest July 1 and January 1. Elkins Company uses

138. ## Chemistry

Calculate the pH of a water sample from a playa lake in the western US that has the evaporite mineral potassium bicarbonate (KHCO3) at a concentration of 0.009 mol/kg. Assume the water is in equilibrium with the atmosphere (PCO2 = 10-3.4 bar) and the

139. ## algebra 2

5*square root of 5-square root of 45. Help please?

140. ## math

The application of one function followed by the application of a second function to the result of the first as in F^-1(f(x)) is called composition of functions. The two functions need not be inverse of each other. In a diagram, the output of one function

141. ## rate constant

A reaction has a rate constant of 1.25×10−4 at 28 and 0.227 at 77. Determine activation barrier for reaction What is the value of the rate constant at 18?

142. ## socology

what is the meaning of ventilation and space of structures

143. ## I.T

How can you protect your computer from fires, dust extreme temperature and power surges?

144. ## Physics Conservation of Energy

During a rockslide, a 740 kg rock slides from rest down a hillside that is 500 m long and 300 m high. The coefficient of kinetic friction between the rock and the hill surface is 0.18. (a) If the gravitational potential energy U of the rock-Earth system is

145. ## math

The bank gave jennifer \$20 to start a savings account. Each month Jennifer added the same amount, \$13. Which expression shows how much money Jennifer has after (m) number of months? A. 20m B. 20m+13 C. 20+13M D. 13m*20

146. ## math

Study the in/out taable. In(p) Out 1 3 2 7 3 11 4 15 5 ? Which expressions give the output if (p) is the input? A. p+3 B. 2p+1 C. 2p+3 D. 4p-1

147. ## chemistry

calculate the dimensions of a cube that contains 22.4L of gas at STP.

148. ## Lang. Arts

Which one of these doors seeems to be the most promising? I had to choose between "seem" and "seems" which I know "seems" is correct, but I also had to say what the subject was. Is it "these" because "doors" was incorrect. Please explain...thanks

149. ## statistics

The mean of 3 consecutive multiples of 3 is equal to A.The mean of 4 consecutive multiples of 4 is equal to A + 27. The mean of the smallest and largest of these 7 numbers is 42. Find A

150. ## math

Sally has 6 more than three times the number of shoes Sandra has. If, (s) is the amount of shoes Sandra owns,which expression show the amount of Sally's shoes. A. 3+6s B 3s-6 C. 6-3s D. 6+3s

151. ## math

Study the in/out table In(x) Out 3 10 5 16 7 22 8 25 x ? which expression give the output if x is in he input? A. 2x-1 B. 3x-1 C. 2x+1 D. 3x+1

152. ## math

Alex buys a magazine for \$8 and some candy bars for \$2 each. He spendss a total of \$22. Which equation would you use tofin how many candy bars (b) Alex bought? a. 8-2b=22 b. 2-22b=8 c. 22-8b=2 d. 8+2b=22

153. ## math

how do you find the lenght of a segment with given exponents?

I still am confused about the snail lab things... Ms. Sue helped me with the calculate, but I still have a question... Calculations: .136 cm/s .000136 m/s .4896 m/h Calculate how long it will take your snail to cross a sidewalk(2m) cross a road(20m). How

155. ## math

a wheel makes 8 1/10 revolutions per minute if it rotates for 85 mins. how many revolutions will it make

156. ## Algebra

An investor invested a total of 1,400 in two mutual funds. One fund earned a 8% profit while the other earned a 3% profit. if the investor's profit was \$67, how much was invested in each mutual fund?

157. ## math

For a field trip 22 students rode in cars, and the rest filled eleven buses. Which equations would you use to find how many students (s) rode buses if 287students were on the trip? a. 287-22s=11 b. 287=22+11S C. 11S-22=287 D. 22=11S-287

158. ## alg 150 help

X^2+8X-4=0 what are the 2 answers?

159. ## alg 150 help

the width of a rectangle is 9 less than twice the length. if the area os the rectangle is 41cm^2 what is the length of the diagonal?

160. ## physics

A rock is dropped from a treetop 19.6 m high, and then, 1.00 s later, a second rock is thrown down. With what initial velocity must the second rock be thrown if it is to reach the ground at the same time as the first? I'm not sure how to find the initial

161. ## algebra

a consultant advices the owners of a beauty salon that their profit p each month can be modeled by p(x) = - 50 x2 +3500 x- 2500

162. ## SS8R - HELP!!!!

Booker T Washington and W.E.B. Du Bios continue to argue for the needs of African Americans until Washington’s death in November 14, 1915. Washington wants segregation but Bu Bios does not. Today African American..... I need something else for my last

163. ## chemistry

A definite amount of nh4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reaction mixture containing excess of naoh was neutralized with 12.5ml of 0.75N nh2s04. Calculate the amount of nh4cl taken. The answer 3.78g who

164. ## Math_100

{1} {2,3} {4,5,6} {7,8,9,10} {11,12,13,14,15} 1 is the first element and 2,3 is the second what is the first number in the 100 element of the sequence

165. ## Calculus

Given a function f(x)=sqrt(100-x^2) Evaluate the integral xsqrt(100-x^2dx) for the interval (0,10)

166. ## Calculus

Differentiate with respect to theta Y=((sin3theta)(tan3theta))^12

167. ## Pre calculus

Tanx + sinxsecx/ cscxtanx

168. ## MATH

Englewood averaged 17 problems right on the math decathlon. Avalon Park Elementary scored an average of 14 problems right. Which equation show the difference, (d) between the averaged points scored by the Engelwood and Avalon Park? a. d=17x14 b. d=17-14 c.

169. ## Calculus

If c is a critical value of the function f(x) then evaluate f(c)

170. ## math

a guy ovserves sun at an angle of 15 degree and after sometime it is 55 degree. what is the time between his observation?

171. ## chemistry

In the previous example, how many ml of 0.1M kmn04 are required to react with 30ml of 0.05M h202? the answer 3ml who helps

172. ## science

How deep is the wind mixed layer in the Atlantic ocean is the water column stable or unstable

173. ## college algebra

Need to solve what are the steps to do so? 1.5

174. ## math

People who eat losts of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods. Fruits and vegetables are rich in antioxidants such as vitamins A, C, and E. Will taking antioxidants help prevent colon cancer? A

175. ## physics

1) A car, initially traveling with a uniform velocity, accelerates at a rate of 1.0 m/s2 for a period of 12.0 seconds. If the car traveled 190.0 m during this 12.0 second period, what was the velocity of the car when it started to accelerate?

176. ## math

a diagonal of a polygon is a straight line joining any 2 non-adjacent corners.a decagon has 10 corners. .how many diagonals does it have ?

177. ## math

a 3 cm by 3 cm by 3 cm cube is painted all over its outside and is then cut into 27 smaller cubes. How many of these small cubes have paint on more than one face? please explain how you work it out,thanks

178. ## Spanish

Translate: I have a big nose. Is it: Tengo la nariz grande. or : Tengo una nariz grande. My teacher says you must use el, la, los, and las with body parts.

179. ## Ethics,

What are the main provisions of Title IX? Why is Title IX considered one of the more controversial measures taken by the federal government in addressing inequality?

180. ## math

what is the interior angle of a regular polygon

181. ## math

Atdewberry Elementary there are 5 times as many boys than girls. Let (b) represent the number of boys. Which expression shows the number of girls students at the school. a. 5xb b. 5 divided by b c. b divided by 5 d. bx5 my answer is B. Is this correct?

182. ## Geometry

Why is this statement NOT always true?: The longer diagonal of the rhombus is perpendicular to two sides of the rhombus.

183. ## physical science

the need for gaps in railway lines

184. ## math statistics

Marathon runners were randomly assigned to receive either vitamin C or a placebo. Separately, these treatments were also randomly assigned to a group of nonrunners the same age as the runners. All subjects were watched for 2 weeks after the race to see if

185. ## math statistics

Marathon runners were randomly assigned to receive either vitamin C or a placebo. Separately, these treatments were also randomly assigned to a group of nonrunners the same age as the runners. All subjects were watched for 2 weeks after the race to see if

186. ## math

i write out all the whole numbers,starting from 1,If i wrote 1994 digits altogether,what was the last complete number i wrote down

187. ## math

There are a total of 50 students in the Englewood band. 23 of them are boys. Let (g) represent the number of girls in the band. Which equation shows the number of girls in band? a. 50+23=g b. gx23=50 c. g-23=50 d. 50-23=g my answer is B. Is this correct?

188. ## math

all 4 interior angles of a parallelogram which is not a rectangle are bisected.What shape is always enclosed by the 4 bisectors

189. ## trig

what is the exact value of this equation. cos(20) if it equals pi/4

190. ## math

Harper is two times older than her brother Bill. Let (b) represent Bill's age. Which expression could be used to solve Harpers age? a. 2b b. b divided by 2 c. 2+B C. B-2 mY ANSWER IS B. IS THAT CORRECT?

191. ## math

taylor was having a party.she invited 20 friends to her party, if each person shook hands with every other person .how many handshakes would there be? please explain,thanks

192. ## MATH

THERE are six times as many cats at the Orange County Animal Shelter than dogs. Let (c)represent the number of cats at the shelter. Which expressions show the number of dogs at the shelter. a. 6c b. 6+c c. c divided by 6 d. 6-c My answer is C. Is this

193. ## statistics

can a placebo be an explanatory variable?

194. ## math

brett is having a party .first guest arrived by himself,3 guests then arrive together,each successive group arrives with 2 more guests than the group that entered previously.How many guests will have arrived when the twentieth group enters the room? please

195. ## math

study the function table below. vases flowers 4 12 7 21 8 24 11 33 v f Which expression could be used to find the number of flowers(f) IN (v) vases My answer is A.Is that correct?

196. ## Urgent Chem Help

A certain substance has a heat of vaporization of 55.30 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 361 K?

197. ## Calc

find the limit as t approaches x of ((1/t)-(1/9))-(t-9).. help please thank you

198. ## math

sally has a bag of mixed lollies.The bag contains toffees,mints,fruit drops,smarties,jelly beans,candies and licorice.Sally allows every one in her class to choose 3 lollies,but they must not choose more than one of each kind.How many different

199. ## finance

Thelma and Louie's Inc started the year with a balance of retained earnings of \$547 million and ended the ear with retained earnings of \$594 million. The company paid dividends of \$37 million to the preferred stockholders and \$77 million to common

200. ## geometry

cuts across on diagnal saves 1/3 distance of longer side what ratio of short to long side

201. ## ap chemistry

We observe that 5 grams of a gaseous com- pound occupies 1526 mL at 49C and 672 torr. What is the molecular weight of the com- pound? Answer in units of g/mo

202. ## PHYSICS 2

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.98 V and a current of 2.1 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which

203. ## Physics

boy pushes a 3.3-kg book against a vertical wall with a horizontal force of 43 N. What is the minimum coefficient of friction that will keep the book in place without sliding

204. ## math

how many square feet are there in an area of 1.00 square meters(1ft=0.305m)?

205. ## culture anthropolgy

one push factor in rural urban migration is

206. ## Physics

As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and the cloud to be the other plate. The altitude of the cloud is 600m and its area is 6.5 km2. How much charge can the cloud hold before the dielectric

207. ## chemistry

Which statement is the best example of pseudoscience? Mike joined a group that studies phrenology. C.J. joined a group that studies endangered species. Katarina joined a group that studies herbal remedies. Lee joined a group that studies stars and planets

208. ## chemistry

If you were asked to convert 25 cg to the unit hg, which of the following would be the first fraction used in the conversion?

209. ## PHYSICS ASAP!!

An office window has dimensions 3.6 m by 1.6 m. As a result of the passage of a storm, the outside air pressure drops to 0.95 atm, but inside the pressure is held at 1.0 atm. What net force pushes out on the window?

210. ## Physics

Rutherford, Geiger, and Marsden (his students) fired a beam of alpha particles at a gold foil. The alpha particles had an energy of about 3.6 million electron volts, a charge of +2e, and a mass of about four AMU (one Atomic Mass Unit is 1.66 x 10-27 kg.

Sort these numbers describe your sort rule 5, 10, 16, 19, 24, 37, 40

212. ## MATH

a car dealer sells a car with the following options: auto or manual transmission,standard or deluxe stereo,air or no air, manual or power locks, 15 or 16 inch tires, fabric or leather seats. how many different configurations can this car be sold in?

213. ## ap chemistry

We drop 37.4 grams of magnesium into 461 mL of a 3 M HCl solution. What is the maximum volume of dry hydrogen that could be produced by this reaction at STP? Mg(s) + 2HCl(aq) ! MgCl2(aq) + H2(g) Answer in units of liters

214. ## physics

The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save

215. ## maths

1)is the ring of real polynomials R[X] countable and why ?

216. ## Intermediate algebra

Formulas & advanced ratio expressions: Solving for w: S-2lw =h --------- 2w+2l

217. ## chem

The ΔHvap of a certain compound is 34.68 kJ·mol–1 and its ΔSvap is 93.60 J·mol–1·K–1. What it the boiling point of this compound?

218. ## Chemistry

Find the initial concentration of NO2 if the concentration after 2.00 min is 0.113. k = 0.331 1/(M * s) 2 NO2 (g) + N2 (g) --> 2 N2O (g) + O2 (g)

219. ## French

is it true that nananananana batman in french is Que ce que ce que ce que ce batman?

220. ## physics

2.Explain Electric field and Electronic field intensity.

I need and analogy example from the bood The Outsiders.

222. ## Entropy question

What is the absolute entropy of 2.5 mol of gaseous methane at 1.3 bar and 298 K?

223. ## p

Derive Gauss law in integral form.

224. ## chemistry

an aqueous solution contains 1 mol of S2O3 ions and this reduces 4 mol chlorine molecules.What is the sulphur containing product of this reaction?

225. ## English (urgent)

can you give me 4 examples of informative texts..or websites where can I look for informative texts--4 paragraph informative texts...(i need it now)really urgent...please...

226. ## tudor

a number that is between 100 and less then 200 and the number is 19 times larger than its sum

227. ## chemistry

an aqueous solution contains 1 mol of S2O3 ions and this reduces 4 mol chlorine molecules.What is the sulphur containing product of this reaction?

228. ## Gen Chem II

Vitamin K is involved in normal blood clotting. When 1.36 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 4.56 °C. The freezing point and Kf constant for camphor can be found here. Calculate the molar

229. ## C++

Question 3: What specific information does the compiler need to perform a successful function call? I figured it was just a function definition, initialized variables, and a function declaration, but I guess I was wrong.

230. ## chemistry

in an attempt to establish the formula of an oxide of nitrogen , a known volume of the pure gas was mixed with hydrogen and passed over a catalyst at a suitable temperature. 100% conversion of the oxide to ammonia and water was shown to have taken place.

231. ## statistics

a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 oz.you can allow the cup to overfill 5 percent of the time. what amont should you set as the mean

232. ## mathamatices

A square is of side 4dm, find its area in cm square.

During an action potential, Na^+ ions move into the cell at a rate of about 3x10^-7 mol/m^2*s. How much power must be produced by the "active Na^+ pumping" system to produce this flow against a +30-mV potential difference? Assume that the axon is 40cm long

12kg box is placed on a rough surface. A force of 20N is applied at an angle of 30 degrees. Calculate the magnitude and direction of the normal and friction forces

235. ## Math

A ball is tossed straight upward with an initial velocity of 80 ft per second from a rooftop that is 12 feet above ground level . The height of the ball in feet at time t seconds is given by h(t)= -16t^2 +80t+12 find maximum height above ground level the

236. ## physics

State only Gauss law in integral form.Use it to find out electric field due to an isolated homogeneous sphere of charges at an outside point.

237. ## chemistry

describe how you would prepare 500ml of a solution containing 0.025M sodium acetate and 0.001% w/v starch.

238. ## STAT

Numerous studies have found that males report higher self-esteem than females, especially for adolescents (Kling, Hyde, Showers, & Buswell, 1999). Typical results show a mean self-esteem score of M  39.0 with SS  60.2 for a sample of n  10 male

239. ## Trigonometry

Let's solve this fun trigonometric fun math problem! 1.) SEC²X-1/SIN²X

240. ## chemistry

A definite amount of nh4cl was boiled with 100ml of 0.8N naoh for complete reaction. After the reaction, the reactant mixture containing excess of naoh was neutralized with 12.5ml of 0.75N nh2s04. Calculate the amount of nh4cl takedn The answer 3.78g who

241. ## math

constract a line segment cd of lenth equal to the lenth of segment ab?

242. ## Trigonometry

Google this: 5.1 using fundamental identities Comcast Click and open the first result that appears on your search (Result= PDF Document). Textbook pages will appear and go to page 383 on problem #129. The directions will mention "Solve the right triangle

243. ## chemistry

The scientist has an IR spectrometer in her lab. She acquires an IR spectrum of compound X and finds a relatively weak intensity absorption at ~2100 cm-1 and some medium to strong absorptions in the 2850~2960 cm-1 region plus a strong absorption at 3300

244. ## Trigonometry

Solve the equation. 1.) COS X CSC X

245. ## Math

A farmer uses 1034 meters of fencing to enclose a rectangular region and also to subdivide the region into three smaller rectangular regions by placing a fence parallel to one of the sides. Find the demensions that produce the greatest enclosed area.

246. ## maths

Robert cut 3 4 of a loaf of bread in half. Which equation can be used to determine the fraction of the whole loaf represented by each piece n ?

247. ## stats

A clothing company employs 36 workers on first shift and 19 workers on second shift. Five workers are chosen at random to be interviewed about the work environment. Find the probability of choose: a) All first-shift workers b) all second-shift workers c)

248. ## Managerial Economics

Suppose your marketing department does a survey of potential users and finds that these users place the following values on the two versions of your software. Software Version Home Users Commercial Users Full featured version \$175 \$225 Disable version \$150

249. ## physics

determine the amount of heat generated per minute by a 120 volt lamp which takes 0.5 amperes. thanks!

250. ## physics

If electrical energy cost 5.00 per kilowatt hour, what will be the daily cost of using a 50 watt bulb for 4 hours a day when connected across a 220 volt source?, help please!

251. ## physics

A 2000 watt heating element is connected in parallel to a 100 watt bulb across 200 volt source. Determine the total power and heat generated in the combination for 1.5 hours. help!

252. ## Life oretation

Provid 5 ways in which you critically discuss how habit behaviour impact on teenager

253. ## Software

How can you add a program icon to the windows 7 taskbar so the program can quickly be launched at any time?

254. ## Chemistry

What mass of water must be used to dissolve 20.0 grams of ethanol, C2H5OH, to prepare a 0.0500 molal solution of ethanol?

255. ## probability

John has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 110, 210 and 310, respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p. What is the value of 1000p?

256. ## Software

The questions said List four major functions of an OS? The answer i put was Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage applications Is my answer correct?

257. ## probability

John has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 1/10, 2/10 and 3/10, respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p. What is the value of 1000p?

258. ## science

The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3. (Show all of your working and give your

259. ## AMERICAN GOVERMENT Would someone PLEASE check ans

1. The source of the Supreme Court’s authority is (D) moral suasion. judicial activism. concurring opinion. dissent. 2. When the Supreme Court hands down a decision, it is (A) often a mixed decision with majority, dissenting, and even concurring

260. ## algebra2

five less than the product of 6 and a number is no more than twice that same number. what is the number?

261. ## maths-urgently needed

A man invests Rs 3,20,000 for 2 years at 12.5% p.a. compounded annually. If the income tax at the rate of 20% is deducted at the end of each year, on interest accrued, find the amount he received at the end of 2 years.

262. ## math

A friend gave me 1/2 a candy bar and i ate 1/5 of it. How much did she eat?

263. ## Precalculus

Suppose daily operating profit, in dollars, for a movie theater is a function of the number of tickets sold with the rule P(x)=8.5x-2,500, for 0≤x≤1,000. a) Explain why the profit function has an inverse b) P(400)=900. Rewrite this equation in terms of

264. ## physics

A bat moving at 3.7 m/s is chasing a ﬂying insect. The bat emits a 36 kHz chirp and receives back an echo at 36.79 kHz. At what speed is the bat gaining on its prey? Take the speed of sound in air to be 340 m/s.

265. ## physics

For a certain transverse wave, the distance between two successive maxima is 1.26 m and eight maxima pass a given point along the direction of travel every 12 s. Calculate the wave speed.

266. ## Math

Reasoning It costs \$7 for a matinee and \$8 for an evening movie. With \$56, would you be able to buy more matinee tickets or evening tickets? Explain.

267. ## math

solve the equations by finding the exact solution 3=x-3

268. ## maths

Suppose that 10 dice are rolled. Each die is a regular 6 -sided die with numbers 1 through 6 labelled on the sides. How many different sums of all 10 numbers are possible?

269. ## maths-urgent

a man has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 1 10 , 2 10 and 3 10 , respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p . What is the value of 1000 p ?

270. ## Math

Solve the equation: 4x^2 + 100 = 0 Here is my work: 4x^2 + 100 = 0 - 100 - 100 4x^2 =0 /4 /4 x = -5 or 5. Did I do this correctly?

271. ## statistics

The mean scale score on the mathematics examinatin of ninth graders in Texas was 86 with a standard deviation of 5 points. Given a student was selected at random what is the probability that his score was 91 or higher

272. ## math

3Ine=In(ã(3))/(x)-3 Ine

273. ## statistics

The mean scale score on the mathematics examinatin of ninth graders in Texas was 86 with a standard deviation of 5 points. Given a student was selected at random what is the probability that his score was 91 or higher

The formula for the area of a circle and the volume of a sphere an be though of as functions of the radii of the shapes. (Anything you could answer would be so helpful) Thank you!! a) Write a rule expressing the area of a circle as a function of its

275. ## statistics

The mean scale score on the mathematics examinatin of ninth graders in Texas was 86 with a standard deviation of 5 points. Given a student was selected at random what is the probability that his score was 91 or higher

276. ## Algebra

a poster is 24 cm taller than it is wide. it if is mounted on a piece of cardboard so that there is a 6cm border on all sides and if the area of the border alone is 720 cm squared, what are the dimensions of the poster

277. ## Finance

an economic contraction (recession) is now well under way, and the Fed plans to use all facilities at its command to halt the decline. Describe the measures that it may take.

278. ## math

solve the equations by finding the exact solution this is question from log 3=x-3

279. ## Math

Teri scored 64 points in the first 8 basketball games she played in. She scored the same number of points in each game. How many points did she score in each game?

280. ## English

Hello. I'll appreciate some help. Do you think the following structure sounds OK: "It is said in the statement that..."? Thank you very much for your help.

281. ## Physics

A jet aircraft is accelerating at 4.3 m/s2 as it climbs at an angle of è = 44° above the horizontal (see figure). What is the total force that the cockpit seat exerts on the 77 kg pilot?

282. ## MATH

What is the first derivative of L(x) = ((4+x^2)^0.5) + ((25 + (10-x)^2)^0.5)

283. ## math

Will taking antioxidants help prevent colon cancer? A medical experiment divided subjects into four gruops:daily beta-carotene, daily vitamins C and E, all three vitamins every day or daily placebo to determine if they help prevent colon cancer. 1. What

284. ## Maths

A farmer deposits R11 944, for 60 months to buy a tractor.suppose that 12 months afta the purchase of the present tractor and every 12 months thereafter,the farmer withdraws R5000 from his account to pay for maintanance of the tractor.If he makes such

285. ## Algebra

Week 3 Word Problem You live 15 blocks (3/4 of a mile) from RACC. Your car is in for service so you decide to walk to class. Walking at a speed of 4 miles per hour, what is the latest time you can leave your home to be on time for your 10:00 am class in

286. ## Physics 11

A girl stands 2.5 m infront of a plane mirror. If she sees someone else 2.0 m behind her, how far is she from the image of that person?