# Questions Asked onApril 3, 2013

1. ## Math-Calculus

Consider two ships which are joined by a cable attached to each ship at the water line. Suppose the two ships are 200 metres apart, with the cable stretched tight and attached to a pulley which is anchored halfway between the ships at a depth of 45 metres.

2. ## Programming and Design

Draw the hierarchy chart and design the logic for a program that calculates the projected cost of an automobile trip. Assume that the user's car travels 20 miles per gallon of gas. Design a program that prompts the user for a number of miles driven and a

3. ## Chemistry

Calculate the heat released when 454 g of steam at 100.0C condenses and then cools to 30.0C. State your answer in calories.

4. ## Physics

Find the density of a 5.8- solid cylinder that is 15 cm tall with a radius of 5.0 .

5. ## Math

If a salesman sold 2 cars in his first month, 8 cars in his second month, and 32 cars in his third month, using the same sequence how many cars would he sell in month 4, month 5, and month 6

6. ## Physic 30

INFORMATION: Kathy and Bill collided at an intersection. The police learned the mass of the truck is 3200 kg and the mass of the car is 2800 kg. Based on the length of the skid marks at the scene and the mass of the vehicles, police estimate that the

7. ## Chemistry

A 7mL triprotic acid was analyzed and found to contain 0.2572 grams of acid, evidence of phosphate group. Find the molecular weight of the acid, and identify acid. Thank you.

8. ## Alg 3

Put the following equations in standard form. State the center and the radius. x^2-5x+y^2+4y=-3 I get how to end up with (-2.5,2), what is the radius?

9. ## math

7.49plus2.05divide0.50less0.59

10. ## physics

An elevator was design to transport 13 passenger between floor of a ten story building. The unloaded elevator car weighs 1050kg. Assuming tha the average passengers weighs 70kg,determine the weight of the counter weight.

11. ## Chemistry

2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) ΔH° = -1199 kJ How many kilojoules are liberated by the combustion of 56.4 g of methanol?

12. ## maths- urgent

The median of the following incomplete frequency distribution is 10: x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2 , Y Calculate the frequency of 8

13. ## math

Flight Path. In this problem you will use a cosine function to model the flight path of a plane that begins its descent from 20000 ft when it is 45 miles from the airport. Find the fuction p(x)= ACos(wx)+B that that gives the altitude in ft when the plane

14. ## calculus optimization problem

by cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. if the cardboard is 30 inches long and 14 inches wide find the dimensions of the box that will yield the

15. ## maths

How many lattice points lie on the sphere x^2+y^2+z^2=2013? Details and assumptions A lattice point has integer coordinates.

16. ## math

tan^-1(x/√a^2-x^2)=sin^-1(x/a)

17. ## science

a 20 meter flag staff casts a shadow of 12 meter.what is angle of sunrays to the tree

In order to earn \$1,000 in interest over 2 years at an annual rate of 4%, how much principal must be put into a saving account?

Over a three-year period, the total interest paid on a \$4500 loan was \$1620. What was the interest rate?

How long will it take for a \$3000 savings account to double its value at a simple interest rate of 10%?

21. ## Help!!!! math

An hiking group wanted to travel a long chapter of the Appalachian Trail for 4 days. They planned to hike 6 hours per day and wanted to complete a trail chapter that was 60 miles long. what rate of speed would they have to average to complete the trail

22. ## maths

Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|

23. ## colag

use the rational zero theorem and descartes’ rule of signs to assist you in finding all real and imaginary roots for x^4+2^3-3x^2-4x+4=0

Solve for x: log5(x-2)+log8(x-4) = log6(x-1). I do not have any idea on this topic.

25. ## Life Orientation

Critically discuss ten ways in which the environmental health hazard can impact negatively to one's health

26. ## chemistry

A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The mass was reduce to 7.58g. What is the formula of the hydrated?

27. ## Mathematics

Find the work done in moving a particle along the quadrant circle that has radius 2, going from A = (2, 0) to B = (0, 2) in the x-y plane through the force field F given by: F = (x - y)i + (x)j No diagram sorry, but the information provided does allow for

asked by Blueberry Tuffin
28. ## science

A 15.67gsample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate to drive off water. The mass was reduce to 7.58g. What is the formula of the hydrated?

29. ## chemistry

(a) Calculate the lattice constant a in palladium(Pd) . Use only the information available in the class Periodic Table, and express your answer in angstroms.

30. ## L.O

DISCUSS FIVE WAYS IN WHICH THE HUMAN OR ENVIROMENTAL PROBLEM IMPACTS ON THE COMMUNITY

31. ## Math

A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a

32. ## Math (Algebra)

A jar contains x nickels and y quarters only. What percentage of the total number of coins are quarters?

33. ## physics

Find the outside surface area. Note that the containter has a top. (Assume a = 1.95 in, b = 1.35 in, c = 1.3 in, d = 1.25 in, and e = 2 in.)

34. ## Analytic Geometry - Circles and Areas

Let R denote the circular region bounded by x^2+y^2 = 36. The lines x=4 and y=3 partition R into four regions R1, R2 ,R3 , and R4. Let [Ri] denote the area of region Ri. If [R1]>[R2]>[R3]>[R4] , then compute [R1]-[R2]-[R3]+[R4]. Could someone help me, I

35. ## Hans kekana high school

Critically discuss 10 ways in which the environmental health hazard can impact negatively on ones health

36. ## math (Algebra)

(c+x)squared ----------------- 2y c= -8 x= 10 y= 6

37. ## math

Assume that aclass room is arectangular box where the floor is 8metres long and 6metres wide.If the distance from the floor to the ceiling(height of the room)is 3metres,find the diagonal distance between acorner of the room on the floor and the opposite

38. ## English

At the school talent show, Tom is doing voices of the formal President. Don is presenting a pansori, a kind of folk play. David and Tony are singing Oh! Susanna to a piano. (Would you check the passage? Correct errors, please.)

39. ## english

Which word or phrase is an appositive in the sentence? When Sandy met John—a scientist and critic—she fell in love with him.

40. ## life orientation

what is a human and social factors that cause ill-health,sickness,trauma,accidents,crises and disasters within the context of a local contemporary environmenta issue

asked by lindokuhle mazibuko
41. ## Math (Percentage)

In a class of 40 , 12 students failed the exam. What was the passing rate of the said class?

42. ## life Orientation

5 ways in which the human or environmental problem impacts on the community

43. ## Chemistry

What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?

44. ## Alg 1

Operations with radical expressions: Simplify each quotient 7/sq rt 2 - sq rt 3 Please solve and explain how you did it. What do you do when the denominator is a negative?

45. ## Math

A goat is tethered (tied up) to a stake in the ground with a 5 m rope. The goat can graze to the full length of the rope a full 360 around the stake. How much area does the goat have in which to graze?

46. ## chemistry

Calculate the pH of a buffer using dihydrogen phosphate and it's conjugate base. The concentration of weak acid is 0.23 M and the conjugate base concentration is 1.19 M

47. ## calculas

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

48. ## math

Am I missing something here. They way I read this is that the answer is already given 9.5m. or are they after the angle of the ground to guy wire? The guy wire is 13.4m long. It supports a vertical power pole. The wire is fastened to the ground 9,5m from

49. ## Trig

Sin^2 b(1 +cot^2 b) =1

50. ## Chemistry

How many joules of energy are needed to change 275 g of water from 15°C to steam at 100.°C?

51. ## stastics

solving problem the chicago public school system has about 680 schools about 130 of the schools will be closed. if the five schools are chosen at random find the probability that at least three of them willl be closed

52. ## calculas

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

53. ## calculas

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

54. ## Alg 1

Find the exact solution for each equation. Find the approximate solution to the nearest tenth. 5 sq rt 2/ sq rt 2 -1 = x / sq rt 2 Please explain in detail how to work this. I am really confused. Thanks

55. ## Statistics

How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence interval?

56. ## Math

How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence interval?

57. ## math

PLEASE HELP!!!(: There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow). (1 point) A. 400 over 900 B. 5 over 30 C. 8 over 30 D. 40 over 870

58. ## Math (Combinatorics)

A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a

59. ## Math

30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be shared equally. How may this be done?

60. ## english

we had to take a stand on gay marriage.. can you proofread my opening and help me with revising if necessary? Same-sex marriage should be legalized because it is uncivilized to deny gay people a civil right that the Constitution guarantees everyone,

61. ## math

What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4

62. ## math

(7b + 6c)(-2b + 10c) Simplify

63. ## math

(5t^4 + 6t^3 – 3t^2 + 4t - 11) - (-9t^4 – 6t^3 + 5t^2 + 3t + 8) Simplify Help

64. ## math

(8x^4 - 6x^2) + (2x^2 - 8)(2x^2 + 8) Simplify help

65. ## math

(6p + 4q)(-2p + 9q) simplify help

66. ## Math

A merchant visited 3 fairs. At the first, he doubled his money and spent \$30; at the second he tripled his money and spent \$54; at the third, he quadrupled his money and spent \$72, and then had \$48 left. How much money had he at the start?

67. ## math

Two fair dice, one blue and one red, are tossed, and the up face on each die is recorded. Define the following events: E : { The sum of the numbers is even } F : { The numbers are equal } Find the following probabilities: (a) P(E) = (b) P(F) = (c) P(E|F) =

68. ## math

tan^-1a+tan^-1b+tan^-1c=pi,yhen prove that a+b+c=abc

69. ## maths- urgent

The median of the following incomplete frequency distribution is 10: x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2 , Y Calculate the frequency of 8

70. ## maths-conic sections

find cartesian equation of a hypeerbola with centre as origin , focus : ( 2, 0 ) and line x = 2 as directrix .

71. ## math

if sin^-1>cos^-1 then x belongs to which interval

72. ## physics

A 5.11-kg pendulum bob, at a height of 0.730 m above the floor, is released and swings down to the ground where it collides elastically with a 2.29 kg block initially at rest. The block then slides up a 31.0° incline. Find how high up the incline the

73. ## physics

2 balss,one of iron and the other of aluminium,will experience the same upthrust, when dipped in water when both have equal what?

74. ## Phiriphiri

5 ways in which the crime problem impacts on the community

75. ## Math

A carpenter agrees to work under the conditions that he is to be paid \$5.50 every day he works, but must pay \$6.60 every day he does not work. At the end of 30 days he finds he has paid out as much as he has received. How may days did he work?

76. ## Cal

Find the critical number of the function. g(t) = | 4t - 9 |

77. ## Chemistry

the pressure in a 10.0 L cylinder is raised from 483 mm Hg to 762 mm Hg. What is the new volume?

78. ## social studies

as a automobile assembly worker at a GM plant in Ohio, in t e current economic situation, will new manufacturing methods such as industrial robotics increase or decrease job security? what can GM and the UAW do independent of gov action to enhance job

79. ## math

The sides of a rectangle are in a ratio. What is the length of the shorter sides of the rectangle if its perimeter is 42 cm?

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be

81. ## Chemistry

i am not understanding how to solve this how many moles of gas are present in a sample that is at 756 mm Hg pressure, has a volume of 5.3 L, and a temperature of 38 degrees C?

82. ## trig

Indoor steps generally are steeper and have smaller landings. A staircase has a 9 inch vertical rise per step to get to the second floor of a house. If the angle of elevation is 36.8 degrees and there are 16 feet of horizontal space total for each of the

83. ## math

three frinds are sharing 36 cookies . jerry wants 25% of the cokies , gary wants 1/2 of the cookies and terry wants o.75 of the cookies . how many cookies does each person want? can they get what they want ? explain your answer

84. ## Stastics

average for all football teams was an 86 with variance of 16. the buckeyes program over the last 16 year was a 93. is there sufficient proof at the .05 level of significance to say buckeyes were higher than everyone else.

85. ## statistics

ER promises you will be seen in 10 minutes. the standard deviation is 2 minutes. chance someone will wait more than 13 minutes. i don't know what to do without a population size or sample size

86. ## maths-

The median of the following incomplete frequency distribution is 10: x= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 f= 0 , 2 , 5 , 6, 3 , 1 , 2 , Y Calculate the frequency of 8

87. ## Chemistry

The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from room temperature (20.0 °C) to 150 °C.

88. ## math

Operations with radical expressions: Simplify each quotient. -3/sq rt 2 + sq rt 5

89. ## Chemistry

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

90. ## Alg 1

Find the exact solution for each equaton. Find the approximate solution to the nearest tenth. 3 sq rt 3/sq rt 1 + sq rt 1 = x/sq rt 3 Please solve and explain. Thanks

91. ## AP CHEMISTRY

30.0 mL of 0.10 M Ca(NO3)2 and 15.0 mL of 0.20 M Na3PO4 solutions are mixed. After the reaction is complete, which of these ions has the lowest concentration in the final solution? A) Na+ B) NO3- C) Ca+2 D) PO4-3 Answer is C.. How do you solve it though?!

92. ## Alg 1

A golden rectangle is 32 cm long. The ratio of length to width is (1 + sq rt 5)/2. What is the width of the rectangle in simplest radical form? Please solve and explain. Thanks.

93. ## math

A diagram shows the design of the 12 in quilt (12" x 12") block that a quilter is sewing. What are the dimensions of each triangle in the quilt block? What are the dimensions of each triangle to the nearest tenth of an inch?

94. ## college algebra

At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit

95. ## Quantum Physics

The ground state wavefunction for a particle in a shallow potential well in 1 dimension is of the form: Ae^(−|x|/2d). Given that the particle must be found somewhere in the range x∈[−∞,∞], the born rule then places a constraint on the modulus of

96. ## life orientation

one environmental or human factor that causes ill health or accidents or disasters within your community

97. ## Chemistry

At 298 K, deltaGo = - 6.36 kJ for the reaction: 2N2O(g) + 3O2(g) ↔ 2N2O4(g) Calculate deltaG (in kJ) at 298 K when PN2O = 3.12 atm, PO2 = 0.0081 atm, and PN2O4= 0.515 Calculate deltaG (in kJ) at 298 K for some solid ZnF2, 0.025 M Zn2+ and 0.038 M F-(aq).

98. ## Quantum Physics

Suppose we have a particle in 1-dimension, with wavefunction Ae^(−|x|/2d). What is the probability to find the particle in the interval [0,d]?

99. ## AP Chem

Calculate the pH after 0.010 mol gaseous HCl is added to 250.0 mL of each of the following buffered solutions: a. .050 M NH3/.15 M NH4Cl b. .5 M NH3/ 1.5 M NH4Cl

100. ## Quantum Physics

Suppose a particle has wavefunction ψ(x,t=0)=Ae^(−x^2/l^2). What is the average value (expectation value) of p, , for this state at t=0?

101. ## math

a recipe call for 8/9 of a cup of granola. you only want to make 1/9 of the recipe. How much granola do you need?

102. ## math

How do I find the sum of 256,14,632, and 25

103. ## english

Both _____ computers were purchased with special academic pricing. (Points : 1) students’ student’s students

104. ## Math

"Jack has a collection of nickels and quarters. He has a total of 50 coins worth \$10.30. How many of each coin does he have?" I got the answer of 39 quarters and 11 nickels by trial and error. Can someone tell me the correct way to set the problem up?

105. ## college algebra

At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit

106. ## Chemistry

Name a few pharmacopoeias.

107. ## Algebra

I have a few problems I need some help with. The first is Evaluate the sum. 1. There is an E like symbol on the top is 10 on the bottom n=1 and to the right (7-2n) 2. The next question is find a10 for an arithmetic sequence with a1=6 and d=10 3. Find the

108. ## algebra

slope line of (-1,3)(4,5)

109. ## math

35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of

110. ## MATH

An engineering consultant bids on jobs where he can make \$10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4

111. ## math statistic

The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.

112. ## math

The average price of gasoline lately has been hovering lately at \$3.80. What is the standard deviation if the probability that a gallon of gas costs less than \$3.00 is 15%?

113. ## chem

calculate the volume of water that can be treated if 50 g of potassium permanganate is added to the system. Assume that the concentrated iron (II) ions in well water is 5.0ppm

114. ## geometry

A board on the wall in Jeremy's class has 4 right angles, 4 equal sides, and 2 pairs of parallel sides. Which quadrilateral is it?

115. ## General Chemistry

Balance the following redox reaction in acidic and basic solutions: Fe(OH)2(s) + O2(g) --> Fe(OH)3(s) These are the steps my instructor gave us to balance redox reactions: 1. Divide into 1/2 rxns (reduction & oxidation) 2. Balance atoms other than H & O 3.

116. ## Math

Solve Mentally with conversion to decimals, no calculation of common denominators. Place the following in ascending order(smallest to largest) 1/4 8/9 7/10 9/21 7/16 2/3 2/47 5/6 3/4 3/5 1/13 1/8

117. ## chemistry

A student used 5.06g of copper sulphate pentahydrate and salicyclic acid in the performance of the experiment. The student recovered 3.094g of salicyclic acid and 2.146g of copper sulphate pentahydrate. What is wrong with the student's result? How might

118. ## geometry

Which quadrilaterals have 2 pairs of parallel sides?

119. ## math

Make a table and graph the function: Yards are a function of feet.

120. ## math

32 subjects in a study were recruited by advertisements to participate in a study of attitudes and values toward wine. What assumption are you making about these subjects? (I noticed that the problem does not state it is a SRS.)

121. ## college algebra

f(x)=x^2-3 and g(x)=4x+1 to Evaluate (f-g)(-3) Then find (fg)(x) Thanks a million

122. ## math

What is 3 fracture each fourth...5 fracture each half...3 fracture each third?

123. ## math

the dollar card is \$3 per month and 10cents per minute How much would the monthly bill for \$85 minutes be with the dollar card?

124. ## calculus

Use a graph of f(x) = 3 e^{-8 x^2} to estimate the x-values of any critical points and inflection points of f(x). critical points x= Inflection points x= Next, use derivatives to find the x-values of any critical points and inflection points exactly.

125. ## math

Danny has 75 marbles in red color and blue color. He found out number of red marbles is 15 less than twice of the blue marbles. What are the numbers of red and blue marbles does danny have?

126. ## math x

8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.

127. ## physics

A copper cube, 0.31 m on a side, is subjected to two shearing forces, each which has a magnitude F = 6.40 106 N (see the drawing). Find the angle θ (in degrees), which is one measure of how the shape of the block has been altered by shear deformation.

128. ## physics

Generally speaking, what is the distance between the oscillator and the wave stopper necessary to produce a standing wave?

129. ## college algebra

f(x)=x-5 and g(x)=√3x, what us the domain of g°f ? Thanks

130. ## math

why is 1/6 greater than 1/8 but less than 1/3? EXPLAIN

131. ## English

1. Tom has tomato sauce on her nose. 2. There is tomato sauce on Tom's nose. (Are both the same?) 3. There are sinks and tall tables in the cooking classroom. 4. The cooking classroom has sinks and tall tables. (Are both the same?) 5. The students are

132. ## English

The classroom has 10 short/low chirs, 10 tall/high chairs, 10 small desks, 10 big desks, 5 windows, and 20 lockers. (Did I use correct adjectives? Would you check them?)

133. ## algebra

f(x)=8/x-5. Find the symbolic representation for f^-1(x) I don't know if this is right: (x-5)y=8 x-5y=8 5y=8-x 5x/8x =f^-1(x)

134. ## english-edits

Same-sex marriage should be legalized because it is uncivilized to deny homosexuals their civil rights. The Constitution guarantees everyone equal rights and opportunities, however, gays are denied both in terms of marriage. is this better? I have support

135. ## mah

What is one half of 3 2/3?

136. ## math

Rachel cut a length of rope 4 1/3 meters into two pieces. The length of one piece of rope is 2 1/2 meters. What is the length of the second piece of rope. Please answer and explain.

137. ## math

You expect to receive \$16,000 three years from today. If the present value of this amount is \$12,701.13, what is the APY? What is the monthly return?

138. ## chemestry please check my anwers.

1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions? Answer Acid-base reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.

139. ## chem

A 2.35-L container is filled with 165 g argon. If the pressure is 10.0 atm, what is the temperature?

140. ## conceptual physics

If you mix a container of water in which the temperatures are 20 degrees Celsius and 24 degrees Celsius what would the temperature result be?

141. ## precalculus

Find a simplified expression for cos(tan ^(-1)(x/5))

142. ## chemistry

A generic salt, AB, has a molar mass of 313 g/mol and a solubility of 4.30 g/L at 25 °C. What is the Ksp of this salt at 25 °C?

143. ## Chemistry

Determine the number of particles in this sample. Identify the unit as a formula unit or a molecule. 58 g of chromium (III) sulfate.

144. ## precalculus

Find a simplified expression for cos(tan^(-1)(x/5))

145. ## 7th Grade Language Arts

While reading Rudyard Kipling's poem "If," Fred imagined that the speaker was talking directly to him. This reading strategy is called (1 point) connecting. evaluating. interpreting. summarizing. My Answer: 1) A

146. ## operatioms managment

a) What is the optimal order quantity when Lisa purchases more than 10,001 pieces?

147. ## algebra

f(x)=8/x-5. Find the symbolic representation for f^-1(x) I don't know if this is right: (x-5)y=8 x-5y=8 5y=8-x 5x/8x =f^-1(x)

148. ## east brainerd elementary

Explain It Each video game at an arcade requires 55 tokens. Tom has 100 tokens. He said he can play 2 games. Is he correct? Explain.

149. ## college algebra

Find (f°g)(2) when f(x)=5x+9 and g(x)=1/x Thanks

150. ## Calculus

If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 ¨C 120x^2 + 500 f or 0 ¡Ü x ¡Ü 100, a. Sketch the graphs of the functions

151. ## Calculus

If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 ¨C 120x^2 + 500 f or 0 ¡Ü x ¡Ü 100, a. Sketch the graphs of the functions

152. ## help/opinion

I don't know if you guys will be able to help me with this.. but being that Sen Rob Portman is backing same- sex marriage since his son came out, could that be seen as like hypocritical, or more so ideological, being that it's now personal?

153. ## chemistry

what is the boiling point of a solution of .01 mole of glucose(C6H22o6) in 200 g of water. kb=0.512C/m.

154. ## Calculus

If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 - 120x^2 + 500 f or 0 ¡Ü x ¡Ü 100, a. Sketch the graphs of the functions

155. ## Math

1. Which of the following is equivalent to 8 2/5? a.42/5 b.34/5 c.39/5 d.24/5 2. Which of the following fractions is between 3/5 and 2/3? a.3/6 b.3/4 c.5/8 d.7/10

156. ## Math

Maria has a slice of pizza that is 1/6 of the pizza. Ben has a slice of pizza that is 1/3 of the pizza. Maria's slice is bigger. Draw pizzas to show how this is possible.

157. ## Calculus

If the derivative can be thought of as a marginal revenue function for x units (in hundreds of items) sold, and the revenue for a company is given by the function. R(x) = 30x^3 - 120x^2 + 500 for 0 _< x _< 100, a. Sketch the graphs of the functions R(x)

158. ## math

2 3/5 - 1 5/6 = ? 10 2/9 - 5 3/7 = ? 2 3/5 - 1 1/4 = ? Please help me.

159. ## Roman Numerals

23 _____ XXIII 44 ____ XLIV 52 ____ LII 17 ____ XVII 68 ____ LXVIII 99 XCIX 1,111 MCXI 575 DLXXV 946 ____ CMXLVI

160. ## Math

What is the rotational symmetry as a fraction of a turn and the angle of the smallest turn of letter I

161. ## arithmetic

what is 6.3x100

162. ## Math

I don't get this question! Please help. A pizza is divided into 8 slices. Diana eats 1/16 of the pizza in 5 minutes. At this rate, how many slices can she eat in one hour?

163. ## Roman Numerals

1. XVIII+XXII=35 2.VI+XIX=25 3.M-CC=900 4.LXXXIV-XLII=44 5.VI x XI=66 6.X x V x I=50 7.C/XX=5 8.XC/VI=30

164. ## Biochem

What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? Condition: A cell-free yeast extract is placed in a solution that contains 3.50 × 102 mmol glucose, 0.30 mmol ADP, 0.30 mmol Pi,

165. ## Physics

What is the minimum height you would have to place a solid ball of mass M and radius R (I=2MR^2/5) on a hill in order for the ball to make it completely around a circular loop at the bottom of the hill? The diameter of the loop is D. Assume the ball rolls

166. ## physics

A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.4 m and its radius is 58 cm. When an object is placed on top of the cylinder, the cylinder compresses by an amount of 5.9 10-7 m. What is the

167. ## Ms. Sue or Steve Help

17. Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally marks. Country Average Number of Movies Turkey 0.5 Japan 1.2 UK 1.3 Finland 1.3 Austria 1.5 Germany 1.8 Spain 2.2 Sweden 2.2

168. ## math

The school parking lot had room for thirty cars. If all the spaces except six were filled, what fraction of the parking lot was in use? If Mrs. Johnson parks in one of the empty spaces, how does the fraction change? Please answer and explain.

169. ## math sale taxes

Eva is making copies of her choir's performance schedule. The total bill for the copies Eva made came to \$48.00 plus 8% tax. How much tax did she pay?

170. ## to ms sue

Can you just get me started on my math plz

171. ## physics

Romeo is trying to climb a ladder placed 3 meters away from a 4 meter high tower where Juliet is stuck. He weighs 110 kg, the ladder weighs 25 kg. Can Romeo climb to the top of the ladder? If so, can he bring Juliet back down with him?

172. ## math

(5t4 + 6t3 – 3t2 + 4t - 11) - (-9t4 – 6t3 + 5t2 + 3t + 8) Can somone help me ? Simplify . . .

174. ## math

Factor the following polynomials. 9. 3x2 – 12 10. 5x3y + 35x2y + 45xy

70x-1=10x-70

176. ## college algebra

Find the local maximum and minimum values of the function and the value of x at which each occurs. State each answer correct to two decimal places. (If an answer does not exist, enter DNE.) U(x)=x√(5-x)

177. ## poetry

can u help me with a an acrostic poem for nervous system?

178. ## Algebra 1

is 3(2y^2-5)(y+1) completely factored

179. ## 3rd Grade Math

What is the sum of 4/10 and 55/100

180. ## Roman Numerals

9. XLIV+XXXIX=83 10.DCLXXII+CCCXCI=1063 1.D-CLXV=335 12.C-XX=80 13.XV x V=75 14.VIII x XXX+240 15.MM/L=22 16.XLII/VII=6

181. ## math

the perimeter of a triangle is 79.75 inches. the second side of the triangle is half as big as the first side. the third side is 7.25 in greater than the first side what is the length of the longest side of the triangle?

182. ## Trigonometry

How do you find the exact value of cos -7pi/12 without using a calculator to change radian to degree

183. ## Science

Define mass How much something weighs Define volume The amount of space in something Define density and show the formula for calculating density The amount of mass or matter in an object D=M/V

184. ## Science

Why does changing the shape of an object have no effect on the density of that object? Because it's still the same item all you did is change how it looks. The mass and matter stays in the object. Is this correct

185. ## Chem

Calculate the equilibrium constant at 24 K for a reaction with ΔHo = 10 kJ and ΔSo = (-100) J/K. (Don't round unil the end. Using the exponent enlarges any round-off error.) i got g to be 12.4. What else do i do?

186. ## chemistry

In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the temperature of the solution to rise from 21.13 °C to 24.26 °C. If the solution has the same density and specific heat as water,

187. ## C++ programming

write a program C++ program and Use a recursive function that finds the n-th term using the following rule: tn=3tn-1+12tn-2 . please help me out!

188. ## Math

1.The cost of a soda at Paul's Pizza is \$1.69. Refills are \$0.45 each. Gabe ordered a cola and had it refilled 3 times. Which equation can be used to find d, the cost in dollars of Gabe's cola? A.d=3(1.69+0.45) B.d=1.69+3(0.45) C.d=1.69+0.45+3

189. ## Last proof read

Sorry for bugging you guys.. But can someone proof read this paragraph. Ohio Sen. Rob Portman is the first Republican senator to endorse same-sex marriage. Portman changed his views on same-sex marriage once he learned his son is gay. " I want all my

190. ## Math

4.Longview is located between Tyler and Marshall on the state highway. THe distance between Tyler and Longview is 45 miles. THe distance between Longview and Marshall is 25 miles. Which equation could be used to find d, the round trip between Tyler and

191. ## Math

The table below shows the relationship between the number of dozens and the number of cookies Number of dozens Number of cookies 5 60 7 84 9 108 1 132 Which equation could be used to find n, the number of cookies in d, the number of dozens A.n=10d B.n=d/10

192. ## Chemistry

What effect on the molar mass of the unknown acid would each of the following have-that is-would it make the calculated molar mass high, low, or would it have no effect? 1. Adding 5 drops of phenolphthalein instead of 1 drop. 2. Using a standard NaOH

193. ## Chemistry

2.00 L of 0.800 M NaNO3 must be prepareds from a solution which 1.50 M in concentration. How many mL of the 1.50 M are required ? I am not sure weather " 2.00 L " is my V1 or V2 .

194. ## Algebra 3

find the sum of each finite arithmetic series 8+9+10+...+15

195. ## physics

A 1.2kg object is placed on a frictionless table and is attached to a hanging mass using a light string over a frictionless pulley in a fletcher's trolley arrangement. The 1.20kg object accelerates along the table at 2.31m/s while the hanging object

196. ## chemestry please check my anwer.

1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions? Answer Acid-base reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.

197. ## science

going 80 km/h how far can you travel in 30 minutes?

198. ## Honors Chemistry

what volume of solution does a 3.0 molar solution need to have in order to contain 1.8 moles of sodium sulfate?

199. ## history

what were the five key points of henry clay's compromise of 1850? someone please help me and this is a 7th grade history question by the way....

Why does Douglass think the songs that slaves sing on their way to the Great House Farm "would do more to impress some minds with the horrible character of slavery, than the reading of whole volumes of philosophy on the subject could do?"

201. ## chemistry

Determine the radius of the largest atom that can be accommodated in the interstices of BCC iron (Fe) without stress. (Hint: the center of the largest site is at ½, ¼, 0; draw a unit cell - it helps.)

202. ## 6th grade grammar

Please help I have a test tomorrow! Is there a mistake with the comparative adverb? 1. Thomas jumped highly than he ever had before. a. Change highly to higher . b . Change highly to highlier . c. Change highly to more higher . d. Make no change. 2. Andre

203. ## math

A jara has 25 green grapes and 75 purple grapes. what is the probability that a purle grape will be chosen at random?

3. The sun shines more brightly at noon than at dusk. a. Change more to most . b. Change brightly to brighter . c. Change more brightly to brightlier . d. Make no change

asked by Billy C.
205. ## chemistry

assume all of the ionized aspirin remains in the buffer solution and all of the un-ionized aspirin goes into to the ethyl acetate, what is the molarity of the aspirin in the ethyl acetate at pH 2 and pH 8? what equation would ou use for this?

206. ## precalculus

Evaluate cos(sin^(-1)(1/11)), giving your answer as an exact value (no decimals)

207. ## math check my answers

1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?

208. ## Grammar PLease Check MY answers!

Is there a mistake with the superlative adverb? 1. Thomas sauntered casuallyier to the podium and waited. a. Change casuallyier to most casually . b. Change casuallyier to casualiest . c. Change casuallyier to more casuallyier . d. Make no change. 2..

209. ## World History

How were the Byzantine's Engineering geniuses? Take two or three of their engineering feats and discuss how these marvels led to the empire's overall success.

210. ## MAH

CHAD BUYS PEANUTS IN 2-POUND BAGS. HE REPACKAGES THEM INTO BAGS THAT HOLD 5/6 POUNDS OF PEANUTS. HOW MANY 2-POUND BAGS OF PENUTS SHOULD CHAD BUY SO THAT HE CAN FILL THE 5/6 POUND BAGS WITHOUT HAVING ANY PEANUTS LEFT OVER?

211. ## Math

The function r(w) = 2aw-2 + b + c where a, b and c are constants. You are given that r(1) = 5; r’(4) = 12 and r′’(2) = 18. By substituting for w in the above function and its derivatives or otherwise, show that the three given function values give

212. ## Economics

What is the concept of the invisible hand?

213. ## Chemistry

Express 798 mm Hg in units of atm

214. ## economics

In your (imaginary) neighbourhood, the general consensus seems to be that 4 out of 5 cars are in good working order. The price for a good second-hand car is 2000\$, while malfunctioning ones typically fetch 600\$. (a) What is the expected value of a used car

215. ## Chemistry

Calculate the pH after 0.010 mol gaseous HCl is added to 250.0 mL of each of the following buffered solutions: a. .050 M NH3/.15 M NH4Cl b. .5 M NH3/ 1.5 M NH4Cl

216. ## Chemistry

For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g +  it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this

217. ## Math

4.Longview is located between Tyler and Marshall on the state highway. THe distance between Tyler and Longview is 45 miles. THe distance between Longview and Marshall is 25 miles. Which equation could be used to find d, the round trip between Tyler and

218. ## ms sue checkanswer lang arts

10. Which of the following sentences is punctuated correctly? David wants to go skiing; however he can’t go with you this weekend. *******David wants to go skiing, however, he can’t go with you this weekend. David wants to go skiing; however, he

219. ## ???

Why does my neck lean towards the right more? It makes my head not straight either

220. ## Math

1.There are 240 boxes of caramel popcorn on the grocery store shelf. IF 2 out of every 15 boxes contain a secret decoer ring as a prize how many boxes can be expected to contain a secret decoder ring? A.30 B.24 C.16 D.32 C 2.The ratio of green tiles to

221. ## Algebra

We are studying quadratic functions. Suppose you have 80 feet of fence to enclose a rectangular garden. The function A= 40x-x2 gives you the area of the garden in square feet where x is the width in feet. What width gives you the maximum gardening area?

222. ## precalculus

Find a simplified expression for cos(tan^(-1)(x/5))

223. ## Ms. Sue Check answer LAng Arts

4. Which of the sentences below is punctuated correctly? I have visited three countries including: Spain, Portugal, and France. I have visited three countries: Spain, Portugal, and France. I have visited three countries; Spain, Portugal, and France. I have

224. ## ON SCIENCE!!

How many pairs of homologous chromosomes would be in an offspring? Please give me an answer not a link to another website. Thanks.

asked by HELLPP MEE
225. ## Algebra

I have 3 questions I'm stuck on and would love for someone to explain and show me how to solve them so I can also solve the other one. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75. 3.

226. ## chem

Calcium metal and water produce hydrogen gas. If the volume of wet gas collected over water is 95.0 mL at 20 °C and 758 mm Hg, what is the volume of dry gas at STP conditions? (The vapor pressure of water at 20 °C is 17.5 mm Hg.)

227. ## Okay Last Q's For today Ms. Sue MAth

There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P(red). Write the probability as a fraction in simplest form, a decimal, and a percent. 2. A number cube with the numbers 1 through 6

228. ## chemistry

If a sample of HNO3 is found to contain 8.44 · 10-2 mol of N atoms how many moles of HNO3 molecules are present? Express your answer in scientific notation.

229. ## chem

Express the second law of thermodynamics as a mathematical equation. (Select all that apply.) For a reversible process, ÄSuniverse = 0. For a spontaneous process, ÄSuniverse > 0. For a spontaneous process, ÄSuniverse = 0. For a reversible process,

230. ## Math

There are 18 green blocks in a bag. THere are 3 white blocks for every 2 green blocks. Which proportion can be used to find w the total number of white blocks in the bag A.18/w=3/2 B.3/8=2/w C.18/w=2/3 D.2/3=w/18 C JEremy drinks 2 pints of milk every 3

231. ## math

how much would adam have to deposit in a saving account to earn 100 dollars in interest over 4 years at 5% simple annual interest rate.

Find a simplified expression for cos(tan^(-1)(x/5)) Evaluate cos(sin^(-1)(1/11)), giving your answer as an exact value (no decimals)

233. ## Math, Mathematics

A bag contains tiles with the letters P-R-O-B-A-B-I-L-I-T-Y. Tyler chooses a tile without looking and doesn’t replace it. He chooses a second tile without looking. What is the probability that he will choose the letter I both times?

asked by Probability Math
234. ## World History

To say crusade in arabic means something awful compared to saying crusade in English, which means symply "an adventure or mission possibly of a religious manner

235. ## PHYSICS

A woman is 1.6 m tall and has a mass of 47 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.2 × 1010 kg·m/s. What does the observer measure

236. ## ~ MATH

The average price of gasoline lately has been hovering lately at \$3.80. What is the standard deviation if the probability that a gallon of gas costs less than \$3.00 is 15%?

237. ## MATH

An engineering consultant bids on jobs where he can make \$10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4

238. ## math

35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of

239. ## Ratio

Would you put 1:4 or 4:1 which one look better?

240. ## Math

1.There are 240 boxes of caramel popcorn on the grocery store shelf. IF 2 out of every 15 boxes contain a secret decoer ring as a prize how many boxes can be expected to contain a secret decoder ring? A.30 B.24 C.16 D.32 D

241. ## Triangle inequality?

Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive integer? I tried using the triangle inequality but to no avail...how would I do this?

242. ## Statstistics

Chicken Delight claims that 91% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 90 orders revealed that 75 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than

243. ## Computer Literacy

A strong search strategy for a search engine would include which of the following?

244. ## Physics

a 2.0 kg block moving at 8 m/s on a frictionless surface collides elastically with a block at rest. The first block moves in the same direction at 2 m/s. What is the second block's mass?

245. ## Billing and Coding

Define and discuss the relationship between patient registration, the hospital chargemaster, coding systems and reimbursement

246. ## Math

A national survey shows that 13 out of every 25 middle school students have cell phones Patton MIddle School has 475 students about how many students can have cell phones 38 273 247 325 325?

247. ## math

It is noon. A secret agent is driving a jeep through the desert in the tiny principality of Alta Loma. He is 32km from the nearest point on a straight, paved road. Down the road 16km is a power plant in which a band of international terrorists has placed a

248. ## chemistry

Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.

249. ## math

if a board is 5\8 feet long and you want to cut it in 3 equal pieces, how long will each piece be?

asked by andrew smith
250. ## math

Find all roots of the equation ln(4-x^2)=x correct to 8 decimal places. List all successive approximations.

251. ## Phyiscs

A 40,000 kg jet has a force of 3.9×10^3 newtons. what is the acceleration of the jet

252. ## algebra

Rebecca drinks at least 7 cups of water each day. So far,she drank 1.5 cups. She will drink the rest of her water from a bottle that holds 1.5 cups. Write an inequality for the minimum number of bottles of water she will drink.

253. ## Algebra please

I have two left I need help with and don't understand. Find the partial sum S6 1. An=3n+2 2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75.

254. ## Solid Mensuration

A spherical wooden ball 1 ft in diameter is used as a float for a boat. If the ball sinks to a depth of 7 inches, find the area of the wetted surface.

255. ## English

If you answer the question correctly/correct, you will receive a point card which is the same as one point. If you answer the question wrongly/wrong, you won't get a point card. After you get the point card, wirte down your name and number on the back on

256. ## college algebra

Find a symbolic representation for f^-1(x) f(x)=8/x-5 Thanks

257. ## Science

A jet aircraft is traveling at Mach 2.5 through air at 1 °C. What is the jet's speed in m/sec? I can do the equation myself, I just need to know what equation I need to do in order to find the answer.

258. ## math

Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 5 miles?

259. ## physics

A large building has an inclined roof. The length of the roof is 69.5 m and the angle of the roof is 18.0° below horizontal. A worker on the roof lets go of a hammer from the peak of the roof. Starting from rest, it slides down the entire length of the

260. ## math

The circumference of a basketball is 26 inches. What is the approximate diameter of a basketball? (Use 3.14 for .)

261. ## Precalculus

Verify the identities. Cos^2x - sin^2x = 2cos^2x - 1 When verifying identities, can I work on both side? Ex. 1 - sin^2x - sin^2x = 1 - 2sin^2x 1 - 2sin^2x = 1 - 2sin^2x

262. ## college algebra

Find a symbolic representation for f^-1(x) f(x)=8/x-5 Thanks

263. ## Math Help please!

Find the area under the standard normal distribution curve for the following z-values: a. Between z= 0 and z = 2.01 b. Between z = 0 and z = -0.32 c. To the left of z = -0.73 d. To the right of z = 0.32

264. ## algebra

Rebecca drinks at least 7 cups of water each day. So far,she drank 1.5 cups. She will drink the rest of her water from a bottle that holds 1.5 cups. Write an inequality for the minimum number of bottles of water she will drink.

265. ## math

help please!!!!! divide and simplify a/a-b b/a-b

266. ## Algebra

X^2(y-7)-14x(y-7)+45(y-7)

267. ## math

divide and simplify a-b/2a divide a^2-b^2/8a^3

268. ## statistics

An educational researcher studying the ages of freshmen at community colleges took a sample of 12 students. The data below represent the ages of the students sampled

269. ## math

(3p^2-6pq+7q^2)-(5p^2-10pq+11q^2)

270. ## English

What do stage directions tell the reader? Do they tell about characterization or about the setting?