# Questions Asked onNovember 9, 2011

1. ## Chemistry

Classify the possible combinations of signs for a reaction's ∆H and ∆S values by the resulting spontaneity. A) Spontaneous as written at all temperatures. B) Spontaneous in reverse at all temperatures. C) Spontaneous as written above a certain

2. ## PROBABILITY MATH

A batch consists of 12 defective coils and 88 good ones. find the probability of getting two good coils when two coils are randomly selected if the first selection is replaced before the second is made. Help me.. since it would be replaced would the answer

3. ## PROBABILITY MATH

From a group of 3 men and 4 women, a delegation of 2 is selected at random. What is the expected number of men in the delegation? Round your answers to two decimal places as needed. Could someone help me with how to do this?

4. ## PROBABILITY MATH

An unprepared student makes random guesses for the ten true-false questions on a quiz. Find the probability that there is at least one correct answer. Could some one please help me? And explain to me how they got the answer? and is there another way

5. ## Chemistry

Consider these changes. (a) Hg(l)->Hg(g) (b) 3O2(g)->2O3(g) (c) CuSo4*5H2O(s)->CuSO4(s)+5H2O(g) (d) H2(g)+F2(g)->2HF(g) At constant pressure, in which of the reactions is work done by the system on the surroundings? By the surroundings on the system? In

6. ## calculus

Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)

7. ## PROBABILITY MATH

Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A= event a diamond is selected B=event a club is selected Determine P(A|(not B)) Could some one explain this to me and tell me how they got the answer

8. ## Math

Describe how to draw a line that passes through the origin and has a slope of 3/5.

9. ## Statistics

A box contains 12 lights bulbs, of which 4 are defective. All bulbs look alike and have equal chance of being chosen. 3 light bulbs are selected from the box to check the quality. a. List all the possible outcomes b. find the probability that all 3 are

10. ## math

Jacie is considering a job that offers a monthly starting salary of \$3000 and guarantees her a monthly raise of \$180 during her first year on the job. Find the general term of this arithmetic sequence and her monthly salary at the end of her first year/

11. ## calculous

Find the area of the region bounded by the parabola y = 4x^2, the tangent line to this parabola at (4, 64), and the x-axis.

12. ## chemistry

which solution has the lower pH? a)0.1 M HCL or 0.1 M HC2H3O2? b)0.1 M NaOH or 0.1 M NH3? c)0.1 M Na2CO3 or 0.1 M NaCl?

13. ## Physics

When the Earth, Moon, and Sun form a right triangle, with the Moon located at the right angle, the Moon is in its third-quarter phase. Find the magnitude of the net force exerted on the Sun. Find the direction of the net force exerted on the Sun. Give the

14. ## Chemistry

Calculate ∆H˚ for the following reaction using the given bond dissociation energies. CH4 (g) + 2O2 (g) --> CO2 (g) + 2H2O (g) Bond.......∆H˚ (kJ/mol) O-O........142 H-O.........459 C-H.........411 C=O........799 O=O........498 C-O.........358 ∆H˚

15. ## PROBABILITY MATH

Find the probability of correctly answering the first 4 questions on a multiple choice test if random guesses are made and each question has 5 possible answers. Explain to me the answer?

16. ## Chemistry

Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the number

17. ## Algebra

Financial Project Five years ago, you bought a house for \$171,000. You had a down payment of \$35,000, which meant you took out a loan for \$136,000. Your interest rate was \$5.6% fixed. You would like to pay more on your loan. You check your bank statement

18. ## Physics

An equilateral triangle 10.0 m on a side has a 1.00-kg mass at one corner, a 2.00-kg mass at another corner, and a 3.00-kg mass at the third corner. Find the magnitude of the net force acting on the 1.00 kg- mass. Find the direction of the net force acting

19. ## Inverse Variation

Help me please.. Explain also :( 1. E is inversely proportional to Z and Z = 4 when E = 6. 2. P varies inversely as Q and Q = 2/3 when P = 1/2. 3.R is inversely proportional to the square of I and I = 25 when R = 100. 4. F varies inversely as the cube root

20. ## calculus

Find an equation of the tangent line to the curve at (8,0). y=ln(x^2 -8x +1)

21. ## Math

What is the annual interest rate if \$1600 is invested for 6yrs. and 456 in intrest is earned

22. ## Astronomy

Based on what you learned about light, select all of the correct statements from the following list. The only type of electromagnetic radiation that is actually considered light is visible light. High frequency photons carry more energy than long

23. ## Applied Decision Methods for Business

. Construct a Gantt chart and project network for the following set of activities, compute the length of each path in the network, and indicate the critical path: Activity Activity Predecessor Time (months) 1 ___ 4 2 ___ 7 3 1 8 4 1 3 5 2 9 6 3 5 7 3 2 8

24. ## Physics

An archer shoots an arrow horizontally at a target 12 m away. The arrow is aimed directly at the center of the target, but it hits 56 cm lower. What was the initial speed of the arrow? (Neglect air resistance.)

25. ## Calculus

The widths (in meters) of a kidney-shaped swimming pool were measured at 3-meter intervals as indicated in the figure. Use the Midpoint Rule with n = 4 to estimate the area S of the pool if a1 = 15.5, a2 = 18, a3 = 17, a4 = 14, a5 = 12.5, a6 = 12, and a7 =

26. ## Economics

Say you are the manager of a perfectly competitive firm selling a product. Your business is making a loss because total revenue is less than total costs. What would you do--shut down or continue to operate? Use hypothetical numbers to explain. Information

27. ## Math, Finance

Parents have set up a sinking fund in order to have \$120,000 in 15 years for their children's education. How much should be paid semiannually into an account paying 6.8% compounded semiannually? PMT = FV ____i_____ (1 + i)^n – 1

28. ## Physics

Suppose a planet is discovered orbiting a distant star with 13 times the mass of the Earth and 1/13 its radius. How does the escape speed on this planet compare with that of the Earth? Ve new ------- = ve earth

29. ## calculus

Let L and M be two perpendicular lines tangent to a circle with radius 6. Find the area bounded by the two lines and the circle

30. ## Physics

An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 3800 km. When the astronaut jumps upward with an initial speed of 4.00 m/s , she rises to a height of 0.600 m. What is the mass of the planet?

31. ## Algebra

The flower garden has the shape of a right triangle. 5ft of a perennial border forms the hypotenuse of the triangle, and one leg is 1ft longer than the other leg.Find the lengths of the legs.

32. ## English

I was referring to my previous sentence: they checked (in) their bags for cigarettes. I urgently need to check these sentences. I believe there are mistakes in the word choice,. Thank you. 1) Another blow (I need a synonym) to traditional beliefs came from

33. ## Algebra

At the time of George W.Bush's presidency, there have been 43 presidents of the United States. Draw a Venn diagram showing the following facts about where each served before assuming the presidency. How many presidents served as vice-president and in the

34. ## Social Studies 9

PLEASE I NEED HELP, I DON'T GET WHAT THIS QUESTION IS ASKING FOR ? :# Were the sons of liberty justified in their treatment of the loyalists.

35. ## economics

which of the following is not a goal of governmetn programs? A. To enforce private property rights B. To prohibit natural monopolies C. To reduce pollution D. To transfer money from higher-incom households to the poorest households E. To maintain price

36. ## geometry

Is this triangle acute, obtuse, or right? Angle R is 82 degrees, Angle S is 56 degrees, and Angle T is 42 degrees

37. ## calculus

Find the volume of the solid generated by revolving about line x = -4 the region bounded by x = y - y^2 and x = y^2 - 3

Light travels about 1 mile in 0.000005 seconds. If a spacecraft could travel at this speed, it would travel almost 10 to the 6th power miles in 5 seconds. About how far would this spacecraft travel in 50 seconds?

39. ## physics

The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.012 kg, and its velocity is +715 m/s. Her

40. ## chemestry

A calorimeter contains 16.0 of water at 15.0. When 1.60 of (a substance with a molar mass of 58.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5. Calculate the enthalpy change, , for this reaction per mole

41. ## English

I checked the sentences myself.There were spelling mistakes to correct. I need to prepare this listening activity taken from a course book (again). I just want to be sure that everything is OK. 1) Travel and expeditions were much in the people’s mind.

42. ## chemistry

Consider the following reaction in a closed reaction flask. If 0.600 atm of gas A is allowed to react with 1.20 atm of gas B and the reaction goes to completion at constant temperature and volume, what is the total pressure in the reaction flask at the end

43. ## science

Earthquakes occur because of _____. plate tectonics cracks in the crust landslides volcanoes

44. ## Math

1/3as many dimes as nickels. 3 more quarters than nickels 17 coins in all

45. ## Mathematics

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings

46. ## physics

A gymnast weighing 72 kg hangs from a cross bar. His coach pushes him forward with a force of 38 N and backward with a force of 20 N. The upward reaction force on the gymnast is 750N. Calculate: i). The resultant (net) force on the gymnast and ii). The

47. ## Organic Chem

The following reaction is a single-step, bimolecular reaction: CH3Br + NaOH ---> CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.150 M, the rate of the reaction is 0.0090 M/s. a) what is the rate of the reaction if the concentration of

48. ## Chemistry

A reaction has a standard free-energy change of -11.80 kJ/mol (-2.820 kcal/mol). Calculate the equilibrium constant for the reaction at 25 degrees C. Please help!

A crate is pulled to the right with a force of 80 N, to the left with a force of 125.8 N, upward with a force of 615.4 N, and downward with a force of 248 N. What is the net external force in the x direction? y direction?? Also.... What is the magnitude of

50. ## Economics

The index most widely used by the government and the private sector to measure changes in the cost of living is the (a) the GDP deflator, (b) Producer Price Index, (c) The interest rate, (d) Consumer Price Index

51. ## physics

At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. It is observed that the maximum speed of the bunch of bananas is 39.6 cm/s. What is

52. ## Physics

A communications satellite with a mass of 450 kg is in a circular orbit about the Earth. The radius of the orbit is 2.9×10^4 km as measured from the center of the Earth. Calculate the weight of the satellite on the surface of the Earth Calculate the

53. ## Mathematics

A half of what John's age was 4 years ago is equal to one third of what it will be in 5 years' time. How old is John now? Explain your workings

54. ## Stats

Harley-Davidson motorcycles make up 14% of all the motorcycles registered in the United States. You plan to interview an SRS of 600 motorcycle owners. a.) What is the sampling distribution of the proportion of your sample who own Harley's? b.) How likely

55. ## physics

A golf ball is drive. With an initial velocity of 25 m/s at an angle of 35 degrees with the horizontal find the maximum height the ball reaches above its original height

56. ## Math

What does it mean to refer to a 20 inch TV or a 25 inch tv set? Such ubits are refer to the diagonal of the screen. A 25 inch TV set also has a width of 20 inch what is its height? would I multiply 20 by the height to get the diagonal? I think the answer

57. ## physics

An Atwood's machine consists of blocks of masses m1 = 13.0 kg and m2 = 19.0 kg attached by a cord running over a pulley as in the figure below. The pulley is a solid cylinder with mass M = 7.30 kg and radius r = 0.200 m. The block of mass m2 is allowed to

58. ## chemistry

A student measures 0.2452 g of a monoprotic solid acid, and dissolves the solid in water to make 100.0 mL of solution. the entire solution is titrated to a phenolphthalein endpoint with 45.06mL of 0.1725M KOH. A. what is the molarity of the acid solution?

59. ## math

The height of an object thrown upward with an initial velocity of 96 feet per second is given by the formula h = -16t2 + 96t, where t is the time in seconds. How long will it take the object to reach a height of 144 feet?

60. ## Science

What instrument are used to measure mass?

61. ## Sport

What are the reasons for the olympic games to be largest of all sporting events?

62. ## Sport

Why Olympia selected to hold at the ancient Olympic Games?

63. ## Calculus

Consider f(x)=200+8x^3+x^4. find the intervals on which function is increasing or decreasing, the local max and minimu values, the intervals of concavity and the inflection points

64. ## Social Studies

The interaction of private companies trying to make the greatest profit and customers trying to get the best deal is called A) competition B) blind faith C) the invisible hand D) the zero sum game Blind faith means belief without true understanding so I'm

65. ## physics

Two balls are approaching each other head-on. Their velocities are +9.30 and -12.1 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of your answer to indicate the direction.) (a) They have same

66. ## math

For every 7 blue chips there are 3 red chips. In a pile of 320 blue and red chips, there are ___ more blue chips than red chips.

67. ## math

if lynns age is 8 years less than 15 times the age of her neice Elizabeth, if the sum of their ages is 24, what is elizabeths age?

68. ## physics

a 60 kg student jumps from a table 1.2m high. When his feet hit the floor he bends his knees so that the stopping time is .06s. What is the average force that the floor exerts on his body in order to stop him?

69. ## maths

use square nombers to determine at least 3 pattern for the first five square nombers.

70. ## math

A parallelogram ABCD has lengths of sides and angles given below. Find the length of the diagonals AC and BD. (Round your answers to two decimal places.) AB = DC = 6 and AD = BC = 5, angleA = 40°

71. ## english

which of the following is not Abrahamic religion? a. christianity b. buddhism c. judaism. d. islam

72. ## math

How to show that 2nCn

73. ## Chemistry

CH3CH2CH(BR)CH=C(BONDED TO A METHYL ON ONE SIDE AND AN ETHYL ON THE OTHER)

74. ## spanish II

Complete with the correct form of the indicated verb: Los alumnos ____ cuando la profesora habla. (dormir)

75. ## Chemistry

draw the alkyne formed when 3,4-dichloroheptane is treated with an excess of a strong base such as sodium amide. I got CH3CH3C(triple bond)CCH2CH3 but was told it was the wrong answer

76. ## math

The all-city band is made up of students from 3 schools. bayside, lincoln, and hendricks. 20 students are in the all-city band. 5 students come from bayside. lincoln has 1 more student in the band than hendricks. how many students in the all-city band come

77. ## English

Could you please check these sentences for me? Thank you. 1) She doesn't want me to watch it because she thinks it is a programme with no ideas, in which characters often shout at one another. 2) She gets on well with her younger brother. 3) They don't go

78. ## physics

a baseball (m = 153 g) approaches a bat horizontally at a speed of 41.0 m/s (92 mi/h) and is hit straight back at a speed of 45.8 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.05 ms, what is the average force exerted on the ball by

79. ## maths

a conical tank open at the top is 4m and has a top radius of 1m its filled with water and after 2 hours, the depth of water dropped to 1m due to evaporation.set up a differential equation for the depth of water as a function of time.set up an equation for

80. ## math..

so is the remainder 1, when 2 raised to power 2003 is divided by 17?

81. ## physics

a ball takes 22 seconds to reach the ground from a height.calculate from what height it dropped?.

82. ## criminal justices

what are current parole and mandatory release policies

83. ## PROBABILITY MATH

From a group of 3 men and 4 women, a delegation of 2 is selected at random. What is the expected number of men in the delegation? Round your answers to two decimal places as needed. Could someone help me with how to do this?

84. ## PROBABILITY MATH

Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A= event a diamond is selected B=event a club is selected Determine P(A|(not B)) Could some one explain this to me and tell me how they got the answer

85. ## physics

a boy drops a rock off a cliff. how fast will it be traveling 2 seconds after he drops it?

86. ## mathematics (kindly help)

the average of first four numbers in a GP is 140. find the ratio.

87. ## computer

2. _____is applications software designed to help users be more efficient. (Points: 5) a.Assistance software b.Efficiency software c.Productivity software d.Software suites is it D

88. ## computer

What type of software is provided with the expectation that the users will change it to meet their particular needs? (Points: 5) Commercial Software Open Source Software Public Domain Software Shareware is it "Open source software" im confused

89. ## health, safety, and nutrittion

the children in your class are working on an art project thar requires them to use a standard hair dryer to produce a particular effect. of the following locations, which one would be the safest place to put the hair dryer while the children are working on

90. ## math

f a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

91. ## Grammar

In the following sentence, is the word empty an adjective? It seems like it would be a noun/direct object The same with this sentence: The good bike was expensive. Is expensive a noun/direct object, or an adjective?

92. ## calculus

Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)

93. ## computer

A collection of integrated software is called a software: (Points: 5) congregation. family. office. suite. im confused about this one i think its D

94. ## calculous

Find the area of the region bounded by the parabola y = 4x^2, the tangent line to this parabola at (4, 64), and the x-axis.

95. ## physics

Could you change the drawing in Figure 15.6 to make it illustrate the heating of air when it is compressed? Make a sketch of this case

96. ## Science

Does intensity increase as amplitude increases? (in reference to SOUND WAVES) Or does it decrease? I'm so confused now. I wrote that loudness, energy and intensity inreases as amplitude increases. Am I right? thank you.

97. ## geography

what is the marcellus shale ? tell me in your own words.

I am suppose to describe what style of decision-making my organization is; but I will be honest, I am not a business major, and this material confuses me. When looking at the company i work for, I recognize that they in the past relied on benchmarking, but

99. ## omputer

The process called __________ marks a particular part of the document for special processing. (Points: 5) blocking editing identifying selecting is it D? im confused betweem B n D

4n+8=9n-7

101. ## Grammar

What is the common nouns & proper nouns in these sentences. 1. Long ago there was a thief in England named Robert. 2. They robbed only rich men. 3. The stolen money was given to anyone who was poor. 4. He was known everywhere as Robin Hood. 5. No one was

102. ## Chemistry

Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.

103. ## science

What elements does the compound MgCL2, magnesium chloride, contain? A. Chloride only B. Magnesium only C. M

104. ## Biology

Which of the following would increase the chance of a successful infection? A. The host has a strong immune system. B. The pathogen is very virulent. C. The pathogen population at the infection site is small D. A and B E. A, B, and C

105. ## Comprehension

The sweater-------- looks best on you is the red one. Which pronoun do I use

106. ## English

A good writer makes events in a story occur plausibly. The action should be consistent with the characters; if the author forces them into uncharacteristic behavior in order to advance the plot, the story will seem artificial. In "Thank You, M'am, " by

107. ## Calculus

Show that limit as n approaches infinity of (1+x/n)^n=e^x for any x>0... Should i use the formula e= lim as x->0 (1+x)^(1/x) or e= lim as x->infinity (1+1/n)^n Am i able to substitute in x/n for x? and then say that e lim x ->0 (1+x/n)^(1/(x/n)) and then

108. ## Social Studies

Im having trouble understanding what is China's FDI. Does anyone have a definition for it?

109. ## Algebra 1

Tim and Kim are twins. At birth, Kim weighed 3 pounds more that 2/3 of Tim's weight. If Kim weighed 6 1/2 pounds at birth,how much did Tim weigh at birth?

110. ## English Help Please Due at 8am

Please proofread for any errors. If you see any please correct them. Thank you. Obesity is one of the major causes of health problems in the United States. Research has been done about this topic for many years. It is more common in the United States

111. ## JavaScript

I need help these javascript exericses: Input: A text string, using prompt. Output: Either "Valid name" or "Invalid name", depending on whether the input names fit the required format, which is Last name,first name, middle initial where neither of the

112. ## Math

1/3as many dimes as nickels. 3 more quarters than nickels 17 coins in all

113. ## Blue Planet

Wind and the surface ocean currents it drives are both strongly influenced by the Fill in the Blank 01, which makes them curve from a straight path as they move over the Earth’s surface. They constantly veer to their Fill in the Blank 02 in the northern

114. ## Logic- Formal Proof

I need to solve a proof and I cannot figure it out. The instructions say only that I will have to use subproofs within subproofs. Premises: A or B A or C Conclusion: A or (B and C)

115. ## Math

Use the pattern "1 less than 3 times the number." Start with the number 5. What is the 4th number in the pattern?

116. ## history JFK

How did the media help kennedy win the presidential election against nixon can someone help me with at least some facts

117. ## calculus

Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount left in the body, with constant of proportionality . Suppose that the half-life of

118. ## English

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

What are the reasons for the olympic games to be largest of all sporting events?

120. ## physics

In the following diagram, the hanging mass is 3.5kg, and the box has a mass of 1.5kg. If the force of the box with the surface is 0.80N, a) find the acceleration of the masses b)determine the force of tension in the string The diagram shows a box on a

121. ## Western Civ

Help! Describe the evolutionary account of the emergence of Israelite religion paying particular attention to the ideas of covenant, law, prophets, morality, relations with Canaanite culture, and other themes you deem significant. Also explain how Jewish

122. ## middle school math

If the numerator and the denominator of a proper fraction are increased by the same amount, is the new fraction greater than, equal to, or less than the original fraction? Is this correct... it would be equal to because you are increasing both the

It takes Bob five minutes to saw a board into three pieces. How long would it take him to saw a board into nine pieces? HINT: The answer is NOT fifteen minutes.

124. ## physics

A roller coaster has a loop the loop with a loop radius of 14.5 m. What is the minimum speed that the cart must have so that unconstrained riders do not fall out when the cart is upside down at the top of the loop? What condition on the riders is met at

125. ## physics

Block A has a mass of 6.07 kg and is on a rough incline of 12.5o to the horizontal. Block B has a mass of 4.82 kg and the coefficient of kinetic friction between Block A and the plane is 0.268. What is the acceleration of the blocks? What is the tension in

126. ## physics

If a vector that is 1cm long represents a velocity of 10km/h, what velocity does a vector 2cm long drawn to the same scale represent? An airplane has an airspeed of 100km/h north. If there is a 30 km/h tailwind, what is its groundspeed?

127. ## Physics

Problem 17.8 Light from a sodium lamp (wavelenght = 598) illuminates two narrow slits. The fringe spacing on a screen 150cm behind the slits is 4.0 mm . Part A - What is the spacing (in mm ) between the two slits? Express your answer using two significant

128. ## Physics

Problem 17.11 Light from a helium-neon laser (wavelenght = 633 nm) is used to illuminate two narrow slits. The interference pattern is observed on a screen 3.0 m behind the slits. Thirteen bright fringes are seen, spanning a distance of 52 mm . Part A -

129. ## physics

Suppose you increase your walking speed from 1m/s to 3m/s in a period of 1s. What is your acceleration? a:2m/s b:5m/s c:4m/s d:3m/s

130. ## Statistics

Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking—even if they are not exposed to the usual pattern of

131. ## physics

Suppose you increase your walking speed from 1m/s to 3m/s in a period of 1s. What is your acceleration? a:2m/s b:5m/s c:4m/s d:3m/s

132. ## physics

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (b)

133. ## math

if a trapezium has a height of 2 m, one side of parallel two sides is 40 m what will be the measurement of other parallel side?

134. ## geometry

A kindergarten school has square mats in two colors, red and blue. The ratio of the perimeter of the red mat to the perimeter of the blue mat is 1 : 2. The area of the red mat is blue mat is 9 square feet. What is the area of the red mat?

135. ## physics

A person lifts a 4.4 kg cement block a vertical distance of 1.30 m and then carries the block horizontally a distance of 13.50 m. (a) How much work is done by the person in the process?

136. ## math

Gloria talked on her cell phone for 320 minutes the first month, 243 minutes the second month and 489 minutes the third month.Her payment package does not allow her to pay per minute;she can only buy packages.If she has to pay \$25 for every 200 minutes,how

137. ## Math

Leroy ran a total of 15 miles last month. He ran 5/8 mile each day. How many days did he run?

138. ## Algebra 1 (HELP PLEASE!!)

Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?

139. ## statistics-math

The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed. (a) What percent of students earned a score between 50% and 70%? ( /2)

140. ## algebra

Multiply , then simplify 5 sqrt:75 - 7 sqrt:3

Can someone tell me what this question means I don't understand it: Violent weather - thunderstorm- Why must Charge Separation be tremendous prior too the occurrence of lightning?

142. ## Math

Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?

143. ## algebra

Simplify by removing factors of 1: 9t^2+9t/36t^2+81t

144. ## Socials Crosswords

Canada and the Twenties... New form of signage? It's 4 letters, and the second letter is E. Leader in the Winnipeg General Strike? 3 letters, and the last letter is U. Canada becomes involved in this international group in the 20's 6 letters, and the last

145. ## Chemistry

Predict whether the following reactions will be exothermic or endothermic A.] N2 (g) + 3H2 (g) --> 2NH3 (g) B.] S (g) + O2 (g) --> SO2 (g) C.] 2 H2O (g) --> 2 H2 (g) + O2 (g) D.] 2 F (g) --> F2 (g) Bond ________ ∆H˚ (kJ/mol) H-H _________ 432 N(triple)N

146. ## algebra

Find all numbers for which the rational expression is underfined: r^2-4r?r^2-4r

147. ## Algebra

Multiply and simplify (8v+4)(4x^2+9x+4)

148. ## Algebra

Solve sqrt:9x+55=x+5, Simplify and use comma to separate the answers

149. ## Algebra

Add, simplify if possible 4y/y^2-9 + y/y-3

150. ## Algebra

Solve and simplify: x^2+14x-4=0

151. ## Physics

In each hand you hold a 0.15 kg apple. What is the gravitational force exerted by each apple on the other when their separation is 0.25 m? What is the gravitational force exerted by each apple on the other when their separation is 0.50 m?

152. ## Chemistry

If an atom gains energy, is it in a more stable or unstable state?

153. ## Social Studies 9

why do you think lawyers in land claims trials refer to the royal proclamation of 1763 more then 200 years . PLEASE PLEASE I NEED IT BY TOMORROW . !!!

looking at the table of 9's facts. do you see another number pattern in the multiples of 9? explain.

155. ## Math

liz earns a weekly salary of \$459 and \$20 per hour for each overtime hour she works. this week her total pay including salary and overtime pay was \$559. write an equation to represent this situation. how many hours of overtime did liz work?

156. ## English

I left out the following sentences. Thank you. 1) My bed is next to the door against 2)Along the wall opposite the window there's a bookshelf. The children are playing happily. 3) I always do my homework carefully. 4) The students are behaving very badly.

157. ## physics

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (a)

158. ## math

find the sum of the square of -3 1/1 and cube of 3/2

159. ## Physics

Gravity on Titan Titan is the largest moon of Saturn and the only moon in the solar system known to have a substantial atmosphere. Find the acceleration due to gravity on Titan's surface, given that its mass is 1.35 X 10^23 kg and its radius is 2570 km.

160. ## Physics

Calculate the rotational inertia of a wheel that has a kinetic energy of 41.6 kJ when rotating at 264 rev/min.

161. ## English

Could you please check these other sentences I left out? (The first refers to my previous post). Thank you. 1) This is a nonsense. She admits being guilty but then she says she would be ashamed of having a coward's heart (by not admitting her guilt?)

Is flying, cried, clapped, try, shook are consonant clusteres

163. ## Physics

The largest moon in the solar system is Ganymede, a moon of Jupiter. Ganymede orbits at a distance of 1.07 X 10^9 m from the center of Jupiter with an orbital period of about 6.18 X 10^5 s. Using this information, find the mass of Jupiter.

164. ## physics

Pleaseee help explain how to draw the free body diagrams for this problem!!! Two blocks with masses m1 = 10.9 kg and m2 = 79.3 kg, shown in the figure (in the figure the 79.3kg block(m2) is on a flat surface, the 10.9kg(m1) block is pinned against the

165. ## Math

three friends each own land in the same town. Miguel owns 71/2 acres. Jorge & Juanita own the same number of acres. if the friends own 20 1/3 acres altogether, how many acres do Jorge and Juanita owns?

166. ## English

I forgot to add this sentence. I'm unsure on the use of the preposition "in". Do you think I can omit it? The new parents checked (in) their bags for cigarettes and listened to their songs to see if they contained bad language.

167. ## Physics

Two 0.53-g basketballs, each with a radius of 17 cm, are just touching. How much energy is required to change the separation between the centers of the basketballs to 1.1 m? (Ignore any other gravitational interactions.) How much energy is required to

168. ## LA

why does prince humperdink have to look for a bride in The Princess Bride?

169. ## Biology

What is the difference between beta and alpha glucose.

170. ## Physics

Suppose one of the Global Positioning System satellites has a speed of 4.50 km/s at perigee and a speed of 3.52 km/s at apogee. If the distance from the center of the Earth to the satellite at perigee is 2.21×104 km, what is the corresponding distance at

171. ## writing

I AM ONLY ASKING FOR YOU TO HELP WITH EDITING IT AND GIVE CONSTRUCTIVE CRITICISM. i AM LOOKING FOR STUFF LIKE WHAT I HEADING IN THE RIGHT DIRECTION , SPELLING ERRORS , ETC I chose the article by John H. Banshaf III, “Lawsuits against Fast-Food

172. ## Math

If interest is compounded monthly at 8% per year for 10 years, explain how to find the number of compounding periods and the interest rate per compounding period.

173. ## statistics

space shuttle astronauts each consume an average of 3000 calories per day. one meal normally consists of a main dish, a vegetable dish, and 2 different desserts. the astronauts can choose from 11 man dishes, 8 vegetable dishes, and 12 desserts. how many

174. ## Algebra

During the first part of a trip a canoeist travels 49 miles at a certain speed. The canoeist travels 25 miles on the second part of the trip at a speed of 5mph slower. The total time for the trip is 5hrs. What was the speed on each part of the trip?

175. ## PROBABILITY MATH

A bag contains 10 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color? Round your answer to 3 decimal places.. Help me find the answer. Is there

176. ## english

why do u think Edwards felt it was necessary to terrify his puritan audience into action?

177. ## english

I have to write a speech about recycling can you help me?

178. ## Math

Main Street can hold four houses. About how big would one house be?

179. ## statistics

suppose you just received a shipment of 13 tvs. 3 of them are defective. if 2 tvs are randomly selected compute the probability that both tvs work and what is the probability at least one doesn't work? answer as a fraction in simplified form

180. ## math HELP FAST PLEASE

sal's movie rental club membership costs \$11 per month. with a membership, each movie costs \$2. sal's monthly movie rental charge was \$23. how many movies did sal rent?

181. ## Math HELP FAST PLEASE

liz earns a weekly salary of \$459 and \$20 per hour for each overtime hour she works. this week her total pay including salary and overtime pay was \$559. write an equation to represent this situation. how many hours of overtime did liz work?

182. ## statistics

about 11% of the population is nervous around strangers. if 2 people are randomly selected, what is the probability that both are nervous and strangers? what is the probability that at least one is nervous around strangers?

183. ## precal

Find the components and so that fog =H . H(x)=log_3e^x

184. ## Math HELP FAST PLEASE

chris has some rice cakes and 1 granola bar as a snack. the snack contained a total of 560 calories. if the granola bar had 120 calories and each rice had 40 calories, how many rice cakes did chris have? explain

185. ## math HELP FAST PLEASE

bella baked 6 dozen cookies. she wants to keep 1 dozen and give the rest to 20 friends. she wants to give an equal number of cookies to each friend. how many cookies does each friend get? justify your answer.

186. ## Physics

An equilateral triangle 10.0 m on a side has a 1.00-kg mass at one corner, a 2.00-kg mass at another corner, and a 3.00-kg mass at the third corner. Find the magnitude of the net force acting on the 1.00 kg- mass. Find the direction of the net force acting

187. ## Organic Chemistry

What is the mechanism for the removal of bromine from dibromocholesterol using Zinc and acetic acid?

188. ## chemistry

In a titration experiment, 22.00mL of a NaOH solution are required to neutralize 24.02 mL of a 0.1094 M HCL solution. what is the molarity of H+ in the HCL solution? (same as the molarity of HCL)

189. ## Social Studies 9

PLEASE I NEED THIS BY TOMORROW!!!. why do you think lawyers in land claims trials more then 200 years after it was proclaimed . NO LINKS PLEASE.

190. ## math

Simply: (a) Four multiply by square root of seven open bracket two multiply by the square root of three plus three multiply by the square root of six minus the square root of seven close bracket. (b) open bracket three multiply by the square root of seven

191. ## math

A piece of paper is 280 millimeters long and 200 millimeters wide. You want to draw a grid on the paper so that there is a whole number of squares on the paper. What are the possible sizes of thet is the largest possible squares?

192. ## science

how does the wind blow around high and lows along and near the surface in the northtern hemisphere?

193. ## math

what must be added to 6 3/5 to produce 3 5/6?

194. ## math

The greatest common factor of two numbers is 5. What could the two numbers be?

195. ## English

What are the ways of how to derive words into noun?

196. ## Physics help

A particle moving along the y-axis has the potential eneryg function U = 6 * y3 J where y is in m. What is the y-component of the force on the particle at 0 m? What is the y-component of the force on the particle at 9 m? What is the y-component of the

197. ## Mathematics

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings

198. ## Math

How do you simplify the radical 4sqrt(128 n^8)

199. ## Statistics

Ticket sales for opening night of a movie have a mean of \$2100 with a standard deviation of \$450. Assume these ticket sales follow a normal distribution. If a movie is selected randomly, what is the probability that opening night ticket sales are more than

200. ## chemistry

in a exothermic reaction temperature changed from 30 to 43, reasons why I got those answers

201. ## Stats

Tonya wants to estimate what proportion of the students in her dormitory like the dorm food. She interviews an SRS of 50 of the 175 students living in the dormitory. She finds that 14 think the dorm food is good. a.) What population does Tonya want to draw

h(t)=-16t+64t what does each zero of this !@#\$%^&tion represent

203. ## Physics

A flywheel with a diameter of 2.45 m is rotating at an angular speed of 74.1 rev/min. (a) What is the angular speed of the flywheel in radians per second? (b) What is the linear speed of a point on the rim of the flywheel? (c) What constant angular

204. ## physics

If an airplane propeller rotates at 1570 rev/min while the airplane flies at a speed of 333 km/h relative to the ground, what is the linear speed of a point on the tip of the propeller, at radius 1.97 m, as seen by (a) the pilot and (b) an observer on the

205. ## CHEMISTRY

Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the number

206. ## precalculus

find the component f and g so that fog =H H(x)=log3 e^x

207. ## math

boxes are stacked one on top of the other. you paint only the sides of each box not top or bottom, but will paint the top at the end of the stack how many faces does he paint in a stack of three boxes?

208. ## english

so apparently my comparison is suppose to be written in formal and not in first person. so my first sentence is not right.how can i rephrase "Miley Cyrus song "The climb" is not only one of my favourite songs, but so it Katy Perry's song"firework? or just

209. ## statistics

A psychologist wants to estimate the variance of employee test scores. A random sample of 18 scores had a sample standard deviation 10.4. Find a 90% confidence 2 interval for the population variance. What assumption, if any, have you made in calculating

210. ## Algebra

Ms Newton's class took the same test as Mr. Euclid's students. Ms. Newton's class has 20 students, and the average(mean) test score was 90. The average of Mr. Euclids class was 80. If you combine both classes the average score on the test is 85. How many

211. ## Physics

A 2.9-kg 12-cm-radius cylinder, initially at rest, is free to rotate about the axis of the cylinder. A rope of negligible mass is wrapped around it and pulled with a force of 20 N. (a) Find the magnitude of the torque exerted by the rope. (b) Find the

212. ## Mathematics

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings

213. ## geography

why is Marcellus Shale important?

214. ## English

I was wondering what you all may think about video games and their effects on children playing them? Are the children becoming more violent? What do these games do t a child's psyche?

215. ## Stats

Which of the following would be closest to a normal distribution? a.) The sampling distribution of the average weight of 40 eggs randomly selected from the stock at the High Street Kroger's grocery? b.) The sampling distribution of the average weight of 4

216. ## physics.pls help

Participants in a road race take water from a refreshment station and throw their empty cups away farther down the course. If a runner has a forward speed of 6.20m/s, how far in advance of a garbage pail should he realease his water cup if the vertical

217. ## phys

Doug pushes a 4.65 kg crate up a 2.00 m high 13.0° frictionless slope by pushing it with a constant horizontal force of 35.8 N. What is the speed (in m/s) of the crate as it reaches the top of the slope assuming that the local acceleration due to gravity

218. ## physics

A 0.5 kg football is kicked with a speed of 15 m/s. A goalkeeper catches the ball and brings it to rest in 0.02 seconds. What is the impulse delivered to the ball and the average force exerted on the goalkeeper?

219. ## statistics

Help!!!!!! A confidence interval estimate for the population mean is given to be (39,90, 48.11) If the standard deviation is 11.473 and the sample size is 52 determine the maximum error of the estimate. determine the confidence level used for the given

220. ## social civics

true or false the united states gained territory in the caribbean sea as a result of the spanish american war

221. ## Pre Algebra

I am having problems with inequality problems. The opposite of g is at least -5. Write an inequality and solve.

222. ## critical thinking

Corporate power affects the dissemination of news by: Answer advertising getting big business presented favorably preventing conflicting viewpoints from being expressed )) my answer getting big business presented favorably

223. ## Stats

A large company has found that 40% of it employees own their own homes. a.) If we randomly select a sample of 20 employees, what is the probability that the sample proportion that own their homes is over 50%? b.) If we randomly select a sample of 40

224. ## English

Is it a mistake if I include "in", then? Thank you.

7.5+y

226. ## College Statistics

A random sample of greeting cards is a mean value of \$2.55 and a standard deviation of \$0.44 So construct a 95% confidence interval estimate of the mean value of all cards in the store's inventory. So if the 2500 cards in the inventory then how are the

7.5+y

228. ## math

22. Your class hopes to collect at least 325 cans of food for the annual food drive. There were 135 cans donated the first week and 89 more the second week. a. Write an inequality that describes this situation. Let c represent the number of cans of food

229. ## math

What are the solutions of the inequality in questions 1-2? 1. - 5(2x+2) - 10x - 17 (1 point)

230. ## english 2

WHAT INFERENCE CAN YOU MAKE FROM THE FACT THAT IT IS FORBIDDEN TO GO TO THE PLACE-BY THE WATER OF BABYLON

231. ## Chemistry

Is the formula for zinc hydroxide ZnOH2

232. ## Algebra

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. 37 said they drove alone. 38 rode in a carpool. 25 rode public transportation. 6 used both carpools and public transportation. 10 used both a

233. ## english

can anyone please let me know my grammatical mistakes in this paragraph:- Presently, I am pursuing diploma in medical administrative assistant from Penn Foster. Since last month I have been looking for job in administration department in a hospital, so I

During the first part of a trip a canoeist travels 49 miles at a certain speed. The canoeist travels 25 miles on the second part of the trip at a speed of 5mph slower. The total time for the trip is 5hrs. What was the speed on each part of the trip?

235. ## critical thinking

Often the press can report political spin without analyzing it to do which of the following? Answer separate lies from denials find the new and unusual separate fact from fiction (( not sure but i think its this one)) separate leaks from fact

236. ## Zoology

What are the two most diverse animal phyla? Arthropoda and.....?

237. ## Organic Chemistry I LAB

why would 4-methyl-2-pentanone have a lower boiling point that 2-hexanone if they are isomers and their molecular weights are the same?

238. ## Science

How many families are found in the Phylum Arthropoda?

239. ## Chemistry

A complex ion, [M(OH)6]4-, is orange in solution. Which of the following ligands, when bound to the same metal might cause the solution to be blue? Cl- CN- CO F- H2O I- NH3 NO2- OH- NCS-

240. ## physics

A cooling fan is turned off when it is running at 870 rev/min. It turns 1200 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant? How long did it take the fan to come to a complete stop?

241. ## critical thinking

When the interests of politicians or big business moguls coincide with those of the masses which of the following is the consequence? Answer coverage of events will be slanted coverage of events will be automatic coverage of events will be cancelled

242. ## Math

How long will it take 7500 to triple itself if it is invested at 7% simple interest?

243. ## math

find the sum of the square of -3 1 over 3 and the cube 3 over 2..

244. ## Chemistry

Based on crystal field theory, which of the following metal ions will not be colored when placed in an octahedral crystal field? Au+ Fe3+ Ag+ Au3+ Nb3+

A cable with 21.2 N of tension pulls straight up on a 1.10 kg block that is initially at rest. What is the block's speed (in m/s) after being lifted 2.42 m assuming that the local acceleration due to gravity is 9.80 m/s2?

246. ## Algebra

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. 37 said they drove alone. 38 rode in a carpool. 25 rode public transportation. 6 used both carpools and public transportation. 10 used both a

247. ## statistics

if 1 adult male is randomly selected and is assumed to have 20 lb of carry on baggage, find the probabilty that his total is greater than 195 lb

248. ## statistics

Can any sample proportion less than 0.5 be used to support a claim that the population proportion is greater than 0.5?

249. ## physics

A 248-kg crate rests on a surface that is inclined above the horizontal at an angle of 19.5°. A horizontal force (magnitude = 537 N and parallel to the ground, not the incline) is required to start the crate moving down the incline. What is the

250. ## Math

In 1976, there were five Sundays in February. In which of the remaining years in the 21st century will February have five Sundays?

251. ## math

pls. explain how to get this: A number x is the harmonic mean of two numbers a and b if 1/x is the mean of 1/a and 1/b. a) Write an equation to represent the harmonic mean of a and b. b) Determine the harmonic mean of 12 and 15. c) The harmonic mean of 6

252. ## calculus

Differentiate the function. f(x)=3x ln 6x - 3x

253. ## Intro to food preperation

why is deep frying considered a dry heat cooking method? and broiling considered a moist cooking method?

What is the half life of a substance if it decays by 75% in two weeks?

255. ## physics

Suppose a beam of 5.0 eV protons strikes a potential energy barrier of height 5.5 eV and thickness 0.57 nm, at a rate equivalent to a current of 825 A. (a) How long would you have to wait-on average-for one proton to be transmitted? (b) How long would you

256. ## Calculus

Okay, I know that the derivative functon of the function -500/x is 500/x^2, but I am having a hard time getting to this result using limit notation. Could someone show or explain the steps used in limit notation to get the derivative of 500/x^2?

257. ## calculus

Differentiate the function. h(x)= ln(x+ sqrt(x^2 -4))

258. ## Algebra

Ms Newton's class took the same test as Mr. Euclid's students. Ms. Newton's class has 20 students, and the average(mean) test score was 90. The average of Mr. Euclids class was 80. If you combine both classes the average score on the test is 85. How many

259. ## chem

A gas at a pressure of 2.0 atm is contained in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature. (Assume that the volume of the container changes with the volume of the gas.)

260. ## math

I am a number between 75 and 87. I have fewer than 3 ones. I am an odd number. What number am I ?

261. ## Math

A lends altogether Rs 6000 to B and C for two years.B pays Simple Interest @ 10%p.a. and C pays Compound Interest @8 %.If C pays Rs 50 more than B as the interest , how much did A lend to each of them?

262. ## english

Please help me with coming up with a thesis statement for this passage ? In Cormac McCarthy's The Road, the father and an old man who is perhaps named Ely (167, 171) discuss God. Considering this passage carefully—“When I saw that boy I thought I had

263. ## Physics

Car 1 has a mass of m1 = 65 103 kg and moves at a velocity of v01 = +0.78 m/s. Car 2, with a mass of m2 = 92 103 kg and a velocity of v02 = +1.4 m/s, overtakes car 1 and couples to it. Neglect the effects of friction in your answer. (a) Determine the

264. ## brown

parker wants to buy as many toys as she can with her 10\$she can buy individule ponies for 2\$ each or a set of 2 dolls for \$3 what she she buy and why what do you need to find out what operations will you use why write a number sentence to show how you

265. ## Chemistry

Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.

266. ## math

if a number has a 9 in the ones place it is always divisible by 3

267. ## college chemistry

what is the molarity of NaF in the final solution if a solution was prepared by mixing 35.0mL of 0.200M NaF with 28.5mL of 0.350M NaF

268. ## Kinesiology

what is the torque generated to hold a 60N dumbell at 90 degrees? The dumbell is 0.6m from the shoulder, the centre of the mass of arm weighs 30N and is .25m from the shoulder, the moment arm is 0.05m?

269. ## Math

Can anybody help figure out how to write 20 hundredths and 8tenths. And 48 hundreds,25 tens, 12 ones and 4 tenths. I have been stuck on these.

270. ## Math

How do I write the numbers in order from greatest to least and show my work 0.275, 2 5/8, 0.15, 3 6/7

271. ## Comm II

When you write a definition of something, I was taught in school that you should not use the word you are defining in the definition. Does this still apply throughout a definition essay? If so, then how?

272. ## Geometry

Which pair of transformations best describes the relationship between RST and VUT?

273. ## Geometry

Is this angle acute, right, or obtuse: Angle M is 102 degrees Angle N is 41 degrees Angle P is 37 degrees

274. ## Social Studies

Karl Marx's ideas are the foundation of A) communism B) capitalism C) mercantilism D) fascism

What are the two most diverse animal phyla? Arthropoda and.....?

276. ## physics

a 200lb pound man walks out to the end of a uniform plank which projects perpendiculary over the edge of a roof. the plank is 20 ft long and weights 100lb. how far from the edge of the roof can the plank overhang?

277. ## MATH

a. Write the scientific notation b. Write the result in ordinary decimal notation. can you do this one so i know how to do the others (2.9 x 10^3)(3.0 x 10^-3)

278. ## Physics

A car (mass = 1070 kg) is traveling at 40 m/s when it collides head-on with a sport utility vehicle (mass = 2570 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle

279. ## Chemistry

What would be the first step of the mechanism in the hydrolysis of SiCl4? I know that SiO2 is formed, but Im confused as to how this would occur.

280. ## math

whats the amount due today on 8000.00 at 7% from june 23. 2008

281. ## Physics

A 59 kg pole-vaulter falls from rest from a height of 5.5 m onto a foam rubber pad. The pole-vaulter comes to rest 0.39 s after landing on the pad. a. Calculate the athlete's velocity just before reaching the pad. b. Calculate the constant force exerted on

282. ## Physics

An airplane has an airspeed of 100km/h north. if there is a 30km/h headwind what is its groundspeed

283. ## Calculus (Derivatives)

Show the steps to get the derivative function of -500/x by evaluating the limit. By limit, they are referring to the equation, lim h -> 0 (f(x + h)-f(x))/h

284. ## algebra

For the following equation, state the value of the discriminant and then the nature of the soluation: -3x^2-8x-11=0 Is there one real solution, two imaginary solutions or two real solutions?

285. ## french

for my homework we had to write a paragraph on what we do to help out around the house could you please let me know if there are grammar or spelling mistakes Pour aider autour de la maison décharger le lave-vaisselle quand il doit être fait et j'ai aussi

286. ## algebra

Write a quadratic equation in the variable x, having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0. The soluation is 8 and is the only solution.

287. ## math

looking at the table of 9's facts. do you see another number pattern in the multiples of 9? explain.

288. ## Math

Find the length of side a in the right triangle if b=12 and c=15 I have the length as 6 but I don't think this is correct Please help

289. ## science

home challenge iron in cereal. What happens when water is added to total cereal

290. ## chemistry

How many moles of sugar are required to react completely with 3.26 mol of oxygen?

291. ## algebra

Re-write with a rational exponent and simplify. ^3 sqrt:22

292. ## Math

Find the integral of (3x-2)4^x dx

293. ## mathematics

What will be the remainder when 2 raised to the power 2003 is divided by 17?

294. ## algebra

If a pro basketball player has a vertical leap of about 20in., what is his hang time? Use the hang time function v=49t^2

295. ## algebra

1.FIND THE LCM OF 10X^7 AND 50X^4 2.FIND THE LCM OF x^2 -36 AND x^2 + 11x +30 3.FIND THE LCM y^3+8y^2+16y, y^2 -8y 4.FIND The LCM Of 15z^2 +60z and 3z^2 + 15z +12

296. ## mathematics..

the average of first four numbers in a GP is 140. find the ratio.

297. ## English 12

I need help on an essay. I'm suppose to pick an author to write about and I chose Ernest Hemingway. I need help getting started. I need help on my thesis that way I can get started. Please Help and Thank you

298. ## algebra

Identify the degree of each term of the polynormial and the degree of the polynormial. -4x^3+2x^2+7x+1 What is the degree of : the first term the second term the third term the fourth term the polynomial

299. ## algebra

Find the x-intecepts, for the graph of the equation: y=x^2+4x-5

300. ## Physics

An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

301. ## Health, Safety, and Nutrition

1)Following the nutritional label on a jar of peanut butter, you determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat. What percent of the calories come from fat. a)30 b)40 c)70 d)80 i put c

302. ## Math

Cost- 50 Selling Price- 125 Mark up rate - Unknown, Operating Profit- unknown Exected monthly sales (unit) 100 Need to solve for Mark up rate & Operating profit