1. English

Scientists report (1) THAT CREATURES LIVING IN THE DEEP SEA ARE IN DANGER OF STARVING TO DEATH. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea

2. Chemistry

If acetic acid is the only acid that vinegar contains [Ka = 1.8*10-5] , calculate the concentration of acetic acid in the vinegar. pH of vinegar is 3.20 _______________ First I got the antilog of the pH given, which turned out to be 6.309E-4. Then I did

3. Chemistry

Radium-223 has a half-life of 11.4 days.Approximately how long would it take for the activity of a sample of Radium-223 to decrease to 1.00% of its initial value?

4. Chemistry

If an 0.650 m aqueous solution freezes at –2.00 °C, what is the van't Hoff factor, i, of the solute? Kf values can be found here. the Kf value is 1.86 °C/m. I get 2 for the answer but it is wrong. Please help!

5. algebra

A parabolic microphone has a cross-section in the shape of a parabola. The microphone is placed at the focus of the parabola. If the parabola is 20 inches wide and 5 inches deep, how far from the vertex should the microphone be placed? Can someone please

6. math

You need 2 cups of orange juice to make 3 quarts of punch.How many cup of orange juice do you need to amke 3 gallons of punch?

7. Chemistry

There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium-241 to neptunium-237.What subatomic particle is emitted from that decay

8. english

Click on the box to choose whether each sentence restates the key idea expressed in the key sentence. Key Idea: When hot weather arrives and the nation takes to the outdoors, mishaps multiply. Drowning is the fourth most frequent cause of accidental

9. Linguistics

Underline the stem extenders in the following words: Philosophy Somnipathy Metaphor Induction Hypnotic Anthropology Pneumectomy Acrid Tennons Extension Saltpeter Maternal

10. physics

Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere. The delicate instruments on board completely fail at a height of 61.5

11. math

Becky used 5 teaspoons of mustard to make a 32 ounces of potato salad. How many teaspoons of mustard does she she need to make 4 pounds of potato salad?

12. chemistry

A sample of propane C3H8 contains 13.5 moles of carbon atoms how many total moles of atoms does the sample contain?

13. algebra

A conic section has the equation x^2+y^2+12x+8y=48. Determine the following; type of conic, domain and range, axes of symmetry, and center.

14. math

A rectanglar blacktop with a length of 5x and a width of 3x has been erected inside a rectangular field that has a length of 12x and a width of 7x. What is the area of the part of the field that is not blacktop? (I believe the answer is 69x^2) There is a

15. English

11. Absurdism is the attempt to show the absurdity of the human condition. • true

16. math

an ant walks 30 feet in 6 minutes. how long will it take the ant to walk 35 yards?

17. Math 75

if you paid \$120 to a loan company for the use of \$2000 for 90 days, what annual rate of interest did they charge?

18. science

Suppose that the 1.3 km span of the golden gate bridge had no expansion joints. Calculate how much longer the bridge would be if the temperature of the bridge increases by 35 degrees celsious

19. algebra

Skip designs tracks for amusement parks. For a new design the track will be ellipitical if the ellipse is placed on a large coordinate grid with its center at (0,0) the equation x^2/2500+y^2/8100=1 model the path of the park.The units are given in yards,

20. physics

A package slides down a 135 m long ramp with no friction. If the package starts from rest at the top and is to have a speed no faster than 19m/s at the bottom, what should be the maximum angle of inclination?

21. Chemistry

0.15g of hydrogen chloride HCl is dissolved in water to make 8.0L of solution. What is the pH of the resulting hydrochloric acid solution?

22. World history; Check:P Added sentences.

Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most

Suppose you are opening a 1,000-square-foot baseball card store. Your lease calls for a flat monthly rent of \$1.75 per square foot plus 5 percent of your gross annual sales. What is the total rent you will pay in one year if you have sales of \$85,000?

24. calculus

a road that runs perpendicular to a highway leads to a farmhouse located one mile off the highway an automobile travels down the highway past the road leading to the farmhouse at a speed of 60 mph how fast is the distance between the farmhouse an

25. US History

Which answer best describes the main purpose of Monroe Doctrine? to claim new United States territories in the West to warn European countries to stop colonization in the Western Hemisphere. to express that American politics and ideals were superior to

26. algebra

How far apart are the foci of an ellipse with a major axis of 26 feet and a minor axis of 24 feet?

Find the maximum value of y/x over all real numbers x and y that satisfy (x-3)^2+(y-3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution??

28. chemistry

A 115 g piece of metal, initially at 60.0 °C, is submerged into 100.0 g of water at 25.0 °C. At thermal equilibrium, this mixture had a final temperature of 27.0 °C. The specific heat capacity of water is 4.18 (J/g°C). Use this information to determine

29. chemistry

Which compound would you expect to have the highest melting point? BeO MgO CaO SrO

30. algebra

Triangles ABC and DEF are similar. Find the perimeter of triangle DEF. Round your answer to the nearest tenth.

31. Science

If there was zero change in Earth’s eccentricity, how might that affect the possibility of an ice age?

32. US History

A treaty was signed in 1842 to end the border dispute between the United States and Britain in Maine. Which best expresses the end result for Britain? the British lost all the territory in Maine The British territory was bigger than that of the U.S. The

33. Language Proof and Logic(Philosophy)

exercise 5.8 write an informal proof of Premises: LeftOf(a,b) | RightOf(a,b) BackOf(a,b) | ~Leftof(a,b) FrontOf(b,a) | ~RightOf(a,b) SameCol(c,a) & SameRow(c,b) conclusion BackOf(a,b) State if you use proof by cases.

34. math

Two vectors have magnitudes of 3 units and 8 units respectively. The resultant of these two vectors has a magnitude of 8 units. What is the angle between these two vectors?

35. algebra

Solve the formula for the variable given. P = r-c/n solve for c. (business) I have worked this problem so many times I'm getting confused. please help. Thanking you in advance

36. algebra

Write an equation for the translation of x^2+y^2=25, by 8 units left and 4 units down. Please help.

37. analytic geometry helps are appreciated

Find the maximum value of y/x over all real numbers x and y that satisfy (x-3)^2+(y-3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution??

38. math

Suppose that a ball has a rebound percentage of 75 and the ball is dropped from a height of 5ft onto the concrete below. Make a table of the data. Write a recursive rule for the data. Write a closed-form function rule for the data. What would the height of

39. Math

Muna and Rita had 360 seashells. Muna gave 4/7 of her seashells to Rita. In return, Rita gave 2/5 of her total number of seashells to Muna. They then had an equal number of seashells each. How many seashells did each of them have at first?

40. Physics

In a "Rotor-ride" at a carnival, people are rotated in a cylindrically walled "room." The radius of the room is 4.0 m, The coefficient of static friction is μ=0.13. What is the minimum rotation frequency such that the people will not slide down the wall

41. Math

Which set of side lengths shows similar triangles? Triangle ABC : 40, 20, 50; Triangle XYZ: 10, 12.5, 10 Triangle ABC : 30, 20, 30; Triangle XYZ: 40, 30, 20 Triangle ABC : 110, 80, 60; Triangle XYZ: 12, 16, 22 Triangle ABC : 32, 20, 32; Triangle XYZ: 40,

42. QSO

Adele Weiss manages the campus flower shop. Flowers must be ordered three days in advance from her supplier in Mexico. Advance sales are so small that Weiss has no way to estimate the demand for the red roses. She buys roses for \$15 per dozen and sells

43. analytic geometry helps are appreciated

For some positive real number r , the line x+y=r is tangent to the circle x^2+y^2 = r. Find r. How do we do this? Set equal equations together??

44. Math

Find the number of each kind of object in the collection. Sue's Card Collection 8 packs of baseball cards 3 fewer packs of hockey cards than football cards 17 packs in all

45. Math (2nd Try)

A rectangle has a length of 6x^3 y^2 - 1 and a width of 3xy + 2. The formula for the perimeter of a rectangle is P=2l + 2w, where l is the length and w is the width. What is the perimeter of the rectangle? Simplify your answer.

46. German

What is the reflexive pronoun "mich" in the following sentence? "Ich sehe mich im Spiegel." -primary constituent -past participle -direct object -indirect object

47. Physics

What current is produced by a ring with a radius of 0.5 m and a uniform positive linear charge density of 1 microCoulomb/m rotatingwith an angular frequency of 4π/s? a. 1 microAmpere b. 3.14 microAmpere c. 6.28 microAmpere d. 12.6 microAmpere

48. Chemistry

Calculate the mass of water that must be added to .45 mol of glucose to make a solution of 15 percent by mass. The molar mass of glucose is 180g/mol

49. math-statistics

Assume the body temperature of healthy adults are normally distributed with a mean of 98.20 degrees F (based on data from the Uniservity of Maryland researchers).a. If you have a body temperature of 99.oo degrees F, what is your percentile score? b.

50. algebra

Triangles ABC and DEF are similar. Find the perimeter of triangle DEF. Round your answer to the nearest tenth. ab=4ft bc=6ft ac=5ft de=6ft ef= 9ft there is no feet given for df Please can anyone help me solve this with steps I don't understand how to do

51. Physics

Suppose you are stopped for a traffic light, and an ambulance approaches you from behind with a speed of 19.0 m/s. The siren on the ambulance produces sound with a frequency of 960 Hz as measured when you are at rest relative to the ambulance. The speed of

52. Physics

Suppose that you wish to fabricate a uniform wire out of 1 g of copper. (Resistivity = 1.72*10^-8 Ohm-m, density = 8.94*10^3kg/m^3). If the wire is to have a resistance of R = 0.5 ohm and all of the copper is to be used, how long is the wire? a. 1765 m b.

53. Physics

train car with mass m1 = 521 kg is moving to the right with a speed of v1 = 7.9 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 5.1 m/s. 1)What is the initial momentum of the

54. Physical Science

ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical

55. world geo

Explain how Western Europe's physical geography affects its climate, settlement patterns, culture, and economy

56. Physics

A current of 4.00 A flows through the heating element of heater converting 500 J of electrical energy into thermal energy every second. What is the voltage across the ends of the heating element? a. 2000 V b. 125 V c. 250 V d. 0.008 V e. 0.125 V

57. chemistry

For a certain change, value of Delta U is -2.37 kJ. During the change, the system absorbs 650 joules. How much work did the system do? Please help! I get 3.02 but is not correct!!

58. analytic geometry helps are appreciated

Find the maximum value of y/x over all real numbers x and y that satisfy (x-3)^2+(y-3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution?? No one has answered this question yet.

59. physics

blue-green light has a frequency of about 6X10 to the fourth Hz. use the relationship c=fl to find the wavelength of this light in air. how does this wavelength compare with the size of the atom, which is about 10 is to ten?

60. Chemistry

Calculate the molarity of Formic acid in a solution containing 44g of Formica acid in 470 g of nitrobenzene. The molar mass of Formica acid is 36g/mol

61. Physics

You hit someone with a force of 197 N. How much force is exerted on you? Answer in units of N

62. math

There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle?

63. Chemistry

What volume in milliters of calcium chloride stock solution would you use to make .50 L of 3.00 M of CaCl solution?

64. Math

Find the number of each kind of object in the collection Miranda has 24 CDs in her collection. Of those CDs, 10 are pop CDs. She has 6 more country CDs than jazz CDs. How many country CDs does Miranda have?

65. Math...I think...

A building casts a shadow 54 feet long at the same time a 6 foot tall man casts a shadow 4 feet long. How tall is the tree?

66. US History

What was the goal of the Missouri Compromise? to create a slave state and a non-slave state to create a free state where fugitive slaves could live to establish a line between slave and non-slave states to settle a disagreement between Missouri and

Find the greatest possible error of the measurement. 7 3/16 inches I don't understand this at all.

68. Geometry

ABC is an acute angle triangle with points D and E on BC and AC, respectively such that BE and AD are altitudes. AD and BE intersect at H. If \angle BCA = 39 ^\circ and \angle EBA = 2 \angle DAB , what is the measure of \angle ABC(in degrees)?

69. Physics

A projected space station consists of a circular tube that is set rotating about its center (like a tubular bicycle tire) as shown in figure below. The circle formed by the tube has a diameter of about D = 1.28km. What must be the rotation speed (in

70. Geometry

Danny has a 15-foot board that he wants to use as a motorcycle ramp.If he wants the end of the ramp to be 4 ft off the ground,what angle will be formed between the board and the ground?

71. Maths

How many ordered triples of positive integers (a,b,c) with 1

72. MATH

A tin is a right circular cylinder with a diameter of 6 meters and a height of 10 meters. What is the surface area of this tin, in terms of pi?

73. Chemistry

When silver-107 is bombarded with a neutron, a different isotope of silver forms and then undergoes beta decay. What is the final product? (My Hints: Write two separate nuclear equations.)

74. Calculus AP

Let R be the region in the first quadrant bounded by the graph y=3-√x the horizontal line y=1, and the y-axis as shown in the figure to the right. Please show all work. 1. Find the area of R 2. Write but do not evaluate, an integral expression that gives

75. Physics

A 0.4kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.3 m on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 65 N, what is the maximum rpm(revolution per minute) the ball can

76. StatIstics

"Household size" is defined as the number of people living in a household. In a sample of 1200 households in California in 2010, the average household size was 2.9 people. Which of the following conclusions can be drawn from this information? Select all

77. math

George finds a company that charges 59 cnets per day for each 1000 borrowed. if he borrows 3000 for 60 days, what amount will he repay, and what annual interest rate will he pay the company?

78. math

An investor purchases 75 shares at 37.90 a share, holds the stock for 150 days, and then sells the stock for 41.20 a share. Find the annual interest rate earned. principal under 3000 3000-10,000 over 10,000 commission 32+1.8% of principal 56+1% of

79. science

a cheetah runs at a speed of 30.0m/s. How long does the cheetah take to run 90.0m

80. German

Ich schminke mich lieber als er sich. is this incorrect or correct?

81. chemistry

Propane reacts with oxygen in a combustion reaction. What volume of carbon dioxide gas is formed when 20 L of propane are reacted with 55.7 L of oxygen?

82. Math

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.020000 cm thick to a hemispherical dome with a diameter of 40.000 meters. How do I do this?

83. Calculus AP

Let R be the region bounded by the graphs of y=cos((pi x)/2) and y=x^2-(26/5)x+1. A. Find the area of R. B. The vertical line x=k splits the region R into two equal parts. Write, but do not solve, an equation involving integrals that solves for k. C. The

84. math

suppose that 12 inches if wire cost 60 cent at the same rate how much in cents will 23 inches of wire cost

85. math

the experimental probability that a kicker will make a field goal is 90%. What is the Probability that the kicker will make his next 2 attempted field goals?

86. Chem Problem

I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

87. US History

What was the goal of manifest destiny? to expand America's borders to remove Native Americans to create an alliance with Mexico to move settlers west beyond the Appalachians

88. chemistry

what minimum mass of copper ii nitrate must be added to 70 ml of a .0594 M phosphate solution in order to completely precipitate all the phosphate as solid copper ii phosphate. 2PO4^-3+3Cu(NO3)2-->Cu3(PO4)2+6NO3^-1 I can not come up with the correct answer

89. Devry

1. You are part of a team given the task of designing an application to determine a students letter grade for a short course. The application will process a quiz, a project, a midterm exam and a final exam to determine the total score. The result of

90. Calculus

I am having trouble solving this problem: "Find where the tangent line is horizontal for r=1+cos(theta)" I would really appreciate the feedback, I'd like to know how to go about solving problems like these. Thank you!

91. Math

In the roulette game, what is the probability of an outcome of: Any odd number Any green number Any number that is red or green Any number that is red and even

92. Physics

If a Mack truck and Honda Civic have a headon collision, upon which vehicle is the impact force greater and which vehicle experiences the greater acceleration? I know they have same force.

Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm. 324 cm^3 108 cm^3 36 cm^3 152 cm^3 Is the answer 152?

94. math

how to put x + 1/5y = -6 into function form (mx + b).

95. ECONOMICS

Data Collected in the imaginary econmomy of Chipolaysia reveals that when the price of dorf decreased by 25%, the quantity of dorf sold increased by 10%, and the quanity of goo demanded decreased by 30%. What is the cross-price of demand between go and

96. physics

Help me solve this physics homework: in sense we all have kinetic energy,even when we are standing still.the earth with a radius of 6.37*10power6 m,rotates about its axis once a day.ignoring the earths rotation about the sun,what is the K.E of a 50Kg man

97. US History

What did the Supreme Court cases and the ultimate outcome for the Cherokee suggest about future dealings between the United States government and Native Americans? (3 points) The U.S. government would most likely follow the rule of law and abide by court

98. English

Revising and Editing It is not only quick and easy to make but it also tastes good and is fun to eat. What changes should be made in this sentence? Insert a comma after make? Change good to well? or insert a comma after fun?

99. Cosmology

Which of the following is evidence that the evolution of disk galaxies can be greatly affected by their large scale environment? Comparison of emissions from elliptical galaxies in x-ray and optical bands Hydrogen gas deficiency in spiral galaxies near

100. DVC

use the inverse square law to show that in space shuttle territory, 200 kilometers above 94 percent of that at earths surface??

101. statisics

What is the confidence level of each of the following confidence intervals for u? x+/-1.96(o/SR N) ht t p : / / w w w . a l l i a n t h a w k . o r g / i m a g e s / C ON F I D e n c e _i nt e r v a l _ n o_ b ac k g r o u n d . g i f it looks like that,

102. algebra

If the pattern of polygons continues, which polygon will have 12 sides?

103. Algebra

The length of a rectangular rug is twice its width. The rug is centered in a rectangular room. Each edge is 3ft. From the nearest wall. What is the area of the room?

104. physics

the coefficient of friction between a block of weight 15N and a horizontal board on which it is resting is 3.0find the horizontal force which will just remove the block and the force acting at an angle of 30 with the horizontal which will just move the

105. Math

formulate but do not solve the linear programming problem. Tracy has at most \$200,000 to invest in stocks,bonds, and money-market funds. She expects anual yields of 15%, 10%, and 8%, respectively, on these investments. If Tracy wants at least \$50,000 to be

106. Algebra

The length of a rectangular rug is twice its width. The rug is centered in a rectangular room. Each edge is 3ft. From the nearest wall. What is the area of the room?

107. MAT116

An investor invested a total of \$3,400 in two mutual funds. One fund earned 8% profit while the other earned a 3% profit. If the investor's total profit was \$202, how much was invested in each mutual fund?

108. Chemsitry

When 3.75 g of a nonelectrolyte solute is dissolved in 405 mL of water at 25 °C, the resulting solution exerts an osmotic pressure of 897 torr. What is molarity? I found molarity to be 0.048. What is the number of moles of solute? to find moles, I

109. science

Which of the following is true about an object that floats in water? (1 point) The object is less dense than frozen water. The mass of the object is less than that of water. The density of the object is less than that of water. The volume of the water is

110. math

construct a triangle xyz in which angel y=45 and angel z =30. Also xy yz zx =10 cm.

111. Math

What are the odds in winning in a roulette if I bet on an exact number chosen from 37 numbers in all?

112. chemistry

6.25 L of a propanoic acid-propanoate buffer must be prepared. The pH of the buffer needs to be 5.05. The solution will be 0.120M in propanoic acid. If the propanoate ion comes from the strontium propionate Sr(C3H5O2)2 then how many grams of strontium

113. chemistry

A buffer is made by combining 3.50 L of 0.200M butylamine, C4H9NH2 with 7.50L of 0.100M butylammonium chloride, C4H9NH3Cl. Assuming that volumes are additive, calculate the following. A) the pH of the buffer. B) the pH of the buffer after the addition of

114. STATISTICS

I need help with 2 questions-TODAY-HELP 8. Assume that the MM207 Student Data Set is a random sample of all Kaplan students; estimate the proportion of all Kaplan students who are male using a 90% level of confidence. 9. Assume you want to estimate with

115. Chemistry

What is the percent by mass of glucose in a solution containing .15 mol of glucose dissolved in 410 g acetic acid? The molar mass of glucose is 180g/mol.

116. geometry

4. In order to properly design a heating system for a greenhouse, the volume of air in the building needs to be determined. Find the volume of air in the greenhouse below. The length of the building is 40 feet long, the width is 20 feet long, and it is 8

117. Urgent

draw an angle x in the 1st quadrant with sinx=3/5, and an angle y in the 2nd quadrant with cosy=-12/13, then determine the exact value of tan(x+y).

118. english 3

In the 1920s, there was a boom in? consumerism. religion. world travel I believe it is world travel???

119. Physics

A space probe is carried by a rocket into outer space where it continues to move on its own in a straight line. What keeps the probe moving? Is the answer: the gravitation forces from diﬀerent stars and planets

120. math

Find the slope and the equation of the tangent line to the graph of the function f at the specified point. f(x)=-10/3x^2+6x+6; (-1, -10/3) slope ?? tangent line y = ?

121. Chemistry

A certain reaction has an activation energy of 25.65 kJ/mol. At what Kelvin temperature will the reaction proceed 5.50 times faster than it did at 291 K?

122. American Goverment

What European country was England's primary rival in North America? In which colonies did the citizens have the most power over their own affairs? About how long after the conflict between Britain and the colonies broke into open warfare was the

123. Physics

Superman, who likes physics, dangles his watch from a thin piece of string while he is taking off from ground horizontally at a constant acceleration a. He notices that the string makes an angle of θ with respect to the vertical. After 18 seconds, his

124. math

a gardener places lilies in a pond.He does on the first day of the month of september.it double in volume every day until the last day of the month,the pool is full.On what day of the month was the pool half full of lilies?

125. statistics

#1: Total students 237, total males 41, need to estimate the proportion of students that are male using 90% confidece level. Also #2: estimate the proportion of students that commute less than 5 miles to work within 2% , what sample size would you need.

126. algebra

Solve. x/9-1/7=26/63 STEP 1: The LCM is _________ To clear denominators, multiply each side of the equation by the LCM. _______/1 (x/9-1/7)=__________/1 multiply 26/63. STEP 2: Use the Distributive Property. _____/1 multiply x/9 - _________/1 multiply 1/7

127. physics

Suppose that the pressure of an ideal gas mixture remains constant at 1700 Pa (1 Pa = 1 N/m2) and the temperature is increased from 400K to 800K. How much work does the gas do to the surroundings during expansion?

128. US History

What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee Im thinking two Supreme Court decisions?

129. QSO 51O

Problem 4: Module 8 (30 points) The Exeter Company produces two basic types of dog toys. Two resources are crucial to the output of the toys: assembling hours and packaging hours. Further, only a limited quantity of type 1 toy can be sold. The linear

130. Chemistry

Given the rate equation... RATE = ([ Na2S2O3]/time) = k [I-]a [BrO3-]b [HCl]c 1A) You mix together in the proper manner the following: 10.0 mL of .0100 M Potassium Iodide 10.0 mL of .00100 M Sodium thiosulfate 10.0 mL of water 10.0 mL of .0400 M Potassium

131. Food and nutrition

Examples of unhealthy foods

132. Statistics

A real estate company is selling 32 houses. One of the houses costs \$834,000, but in order to attract more buyers, the price is dropped to \$819,000. By how much does this change the average price of the 32 houses?

133. Cosmology

Which of the following statements is not true of spiral arms: they tend to trail the rotation of the galaxy they are sites of star formation they are amplified by resonances between the epicyclic frequencies of stars and the angular frequency of the spiral

134. Statistics

A firm has 82 employees. The average commute distance (that is, the travel distance from home to work) of the employees is 6.2 miles. How many employees have a commute distance of less than 15.5 miles? Select all that are correct. more than 25 more than 35

135. homefield

There are 9 tennis balls in a box, of which only 5 have not previously been used. Four of the balls are randomly chosen from the box. Let  be the number of new balls among the selected ones. (a) Find the probability distribution of : (b) Evaluate the

136. IB Chemistry

Why don't we use the bomb calorimeter to calculate the heat energy in the combustion of alcohol but we use the copper cup calorimeter?

137. social studies

information ob taxation without representation on sugar act, stamp act, and Townsend act(townshed act)

138. Geometry

Luis has a simple calculator that has buttons for the digits 0 through 9, each of the 4 basic operations (+, - ,*,/ ), and an '=' button. Luis pushes a digit followed by the '+' sign, followed by another digit, followed by the '-' sign, followed by another

139. Physics

Recently, Asteroid 2012 DA14 came within 34,200 km from the center of the earth at its point of closest approach. If the moon goes around the earth once every 27.5 days, what is the ratio of the distance of closest approach of DA14 to the radius of the

140. Geometry

In acute triangle ABC, we have \angle CAB = 34 ^\circ . E is the foot of the perpendicular from B to AC. A point H is on BE is chosen, and X is the foot of the perpendicular from H to AB. What is the measure (in degrees) of \angle of EHX?

I need to convert 39 mL to ounces. (1 qt.= 32 ounces)

142. physics

at what inclination should the object be released from rest if it is to reach a maximum horizontal distance of 2m as shown. coeff of friction is 0.37 for all surfaces of contact.

143. math

Three forces act concurrently on a point P as shown below. Which vector represents the direction of the resultant force on point

144. chemistry

A 12 g sample of Ne is added to a container that also holds .78 mol of helium gas. What is the partial pressure of helium if the total pressure, after mixing is 2.43 atm?

145. social studies

info on coercive acts intolerable to British colonies and the quebec act it can't be wikipedia

146. Math

Find the number of each kind of object in the collection Curt has 12 models in all. Three of the models are airplanes. Curt has 5 more models of cars than boats. How many models of cars does Curt have?

147. World history; Check:P

Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most

148. Physics

You hit someone with a force of 197 N. How much force is exerted on you? Answer in units of N Is the answer 197 N

149. trig

10sinB+5 = sinB+5

150. civics

Does anyone know where I can find a list of supreme court cases that includes a provision of the bill of rights. I'm looking for something recent. Thanks.

151. math

Find the derivative of the function f by using the rules of differentiation. f(x)=7x^4/3-2/3x^3/2+2x^2-5x+1 f '(x) = ??

152. biology

Think of diets from an energy perspective. Where is the energy coming from, and how many organisms does it move through before it gets to the human? In what form is most of the energy in when it gets to the human, and how is that energy unleashed by the

154. physics

if the angular speed of earth becomes 17times its present value what will be the 1.effect on a body on the equator of earth? it will be A. Heavier than present value B.lighter than present value C.weightless And also what is the reason? 2.a girl sitting on

155. physics

if the angular speed of earth becomes 17times its present value what will be the 1.effect on a body on the equator of earth? it will be A. Heavier than present value B.lighter than present value C.weightless And also what is the reason? 2.a girl sitting on

156. Math 8 - HELP!!!!!!!

If there was 180 days of school and you have Health on A days and Gym on B days. How many days will you have health? please help!

157. math

Find the derivative of the function f by using the rules of differentiation. f(x)=7x^4/3-2/3x^3/2+2x^2-5x+1 f '(x) = ??

158. Chem Problem

I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium

159. math

Your store’s average basket (transaction) size for the month of March was \$11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of \$9.00 for the month of March

160. Astronomy

Which type of emission closely traces the star-forming regions of a galaxy? - molecular CO emission - coronal X-ray emission - 21 cm emission - none of these

161. science

3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of

162. English

A Works Cited is a list of sources used in your research; a bibliography is a list of sources referenced during your research. • true

163. algebra

An ellipse has foci (0,+-3) and vertices (0,+-4). What is the eccentricity of the ellipse? Please help.

164. physics

Suppose we have two qubits in the state (a|0⟩+b|1⟩)|0⟩, to which we apply the following circuit. (a) Is the resulting state entangled? Yes No (b) Specify the state of each qubit after we applied the circuit.

165. physics

What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h?

166. English

Be careful not to overdue the hot spices! What changes should be made? change overdue to overdo insert comma after hot change exclamtion point to a question mark?

167. BIOLOGY

The gastrointestinal phase of gastric secretion:? a. is controlled by the entrance of acidic chyme into the duodenum. b. leads to increased gastric secretion if duodenal pH falls below 2. c. only stimulates gastric secretion. d. will decrease gastric

168. Statistics

As part of a fund raising campaign, the 12 members of the governing board of an organization pledge to raise \$100,000. In the first month of the campaign, the average amount raised by the 12 board members is \$5,200. How much more must they raise, on

169. Cosmology

Which type of emission closely traces the star-forming regions of a galaxy? none of these coronal X-ray emission 21 cm emission molecular CO emission

170. Cosmology

magine you look through a really strong telescope and see a rich cluster. Your telescope is so good that you can see a single galaxy at the center of the cluster. What can you say about that galaxy and be pretty confident that you are correct? It has mass

171. Cosmology

What can we say about the future evolution of irregular clusters? They will become less centrally concentrated and assume a roughly uniform spatial density. They are not yet in a dynamical equilibrium, but will likely reach it eventually. They will keep

172. statistics

I am seeing some inconsistencies with regards to finding the upper and lower quartiles when you you have an odd number in your data set. Which is correct, counting the median in both your upper and lower set, or ignoring it?

173. Econometric -SAS

I am having trouble figuring out the correct code. I am trying to do an unrestricted and restricted model of a Cobb-Douglas Production Model. lnQ=B1 + B2 lnL + B3 lnK + e This is my code data cobb; infile 'cobb'; input q l k; proc reg data = cobb; model q

174. Social studies.

Taxation without representation For sugar act 1764 , stamp act 1765 and Townsend act 1767

175. Math-statistics

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantiles: a.percentage of scores less than 100 b. relative frequency of scores less than 120 c.

176. physics

Find è and W in the figure below where w1 = 17.0 N, w2 = 31.0 N, and á = 67.5°, assuming that the arrangement is at rest.

177. health

What is the eleven letter word that describes the process by which the alcohol leaves the body.

(This question has been removed due to a copyright claim submitted by Connections Education.)

179. Math

How much interest will I pay on a £115000 mortgage over 22 years at 4.83% Your kind cooperation would be much appreciated

180. chemistry

A buffer is made by combining 3.50 L of 0.200M butylamine, C4H9NH2 with 7.50L of 0.100M butylammonium chloride, C4H9NH3Cl. Assuming that volumes are additive, calculate the following. A) the pH of the buffer. B) the pH of the buffer after the addition of

181. Criminology Statistics

A given distribution has a mean of 60. A score of 75 had a corresponding z of +2.00. The standard deviation is

182. math

Hello, I need help to find out why Gustave Eiffel to use the exponential form to build his tower. Thanks for your help.

183. science

A substance has a mass of 12.5 grams and a volume of 9.8 ml.Will the object sink or float in water?

184. math

Write the ratio (18/30)as a fraction in simplest form.

185. ela

Reread these lines from the text, “He was afraid to get up, afraid he might not be able to gain his feet at all, with an anesthetized leg. A numbness in a numbness hollowed into a numbness…” What best expresses the author’s meaning of anesthetized

186. Geometry

Luis has a simple calculator that has buttons for the digits 0 through 9, each of the 4 basic operations (+, - ,*,/ ), and an '=' button. Luis pushes a digit followed by the '+' sign, followed by another digit, followed by the '-' sign, followed by another

187. Physics

1)The Earth exerts an 710 N gravitational force on a man. What force does the man exert on the Earth? Answer in units of N 2)If a book is sitting on a table, the force of gravity pulls it down. Why doesn’t it fall? Is it because The table is pushing up

188. Chemisty

Full analysis for calcium

189. calculus

Use the second derivative to determine the point of inflection for y = x3 – x2 – 8x + 12. ????

190. calculus

Use the second derivative to determine the point of inflection for y = x3 – x2 – 8x + 12. ????

191. chemistry

What is the pH of the solution in which 241 mL of HCl gas measured at 28.0°C and 1.02 atm is dissolved in 1.5 L of aqueous solution

192. biology

Apply the concept of RESPIRATION. What happens inside of a human being when he or she eats various foods? During Respiration, is the energy in the food converted into heat, or into some other chemical (name the chemical!)

193. biology

Apply the Law of Conservation of Energy to food. Trace the energy from its beginning point, to the point where it was stored or used.

194. math

if X is 10% of two other numbers,Y and Z,and Z is 3 times the value of Y.What percentage is X of Y alone ? please show me how you work it out,thanks

195. math

in a set of number rods,there is one rod of length 10,2 rods of length 9,3 of length 8,and so on.If all these rods were laid end to end in one line,how long would the line be ?

Find the slope and the equation of the tangent line to the graph of the function f at the specified point. f(x)=-10/3x^2+6x+6; (-1, -10/3) slope ?? tangent line y = ?

197. math

a taut wire of length 'W'emits a single note when plucked.if it were half as long it woould emit the same note but one octave higher.How long should the same wire be to emit the same note but one octave lower ?

198. simplify

v^4u^5 over v^3 u^6

199. math

in the number 0.123451234512345.........(recurring)what is the 1992th digit after the decimal point?

200. math

complete the pattern:1,2/3,4/9,4,4,4

201. Math

Find the derivative of the function f by using the rules of differentiation. f(u)=10/ãu f '(u) = ??

202. math

Find the derivative of the function f by using the rules of differentiation. f(x) = x^4 - 4x^2 + 3 f '(x) =??

203. statistics

A residential treatment facility tests a new group therapy for patients with self destructive behaviors. To decrease scores of behaviors that has a mean in the overall population of 35 and a standard deviation of 4.7. The mean score for patients after new

204. Chemistry

What is the complete and net ionic equations for: Cu+Zn+2HCl--> ZnCl2+Cu+h2

205. US History

What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee

206. HI

(b) At what point (apart from |x|=∞), is E(x)=0? Express your answer in meters.

207. Statistics

2. (TCO 5) A company produces electronic equipments claims that 98% of their products never need any kind of maintenance. We selected 10 of their products and we wanted to know the probability that 8 of them never need maintenance. Choose the best answer

208. chemistry

At 0*C a 1.0-L flask contains 5.0 x 10^-2 mol N2, 1.5 x 10^2 mg O2, and 5.0 x 10^21 molecules of NH3. What is the partial pressure of each gas, and what is the total pressure in the flask?

209. PSYCHOLOGY

How would you characterize the work environment at Ford in the 1920s?

210. Biology

Why mitochondrion and mitotic division are absent in prokaryotic cells?

211. Biology

Why mitochondrion and mitotic division are absent in prokaryotic cells?

212. Astronomy

The majory of galaxies (by number) are: - barred spirals - giant ellipticals - lenticulars - dwarfs

213. math

How do I find this integral using weierstrass substitution? 1/9-4((sinx)^2)

214. math

How do I find this integral using weierstrass substitution? 1/(9-4((sinx)^2))

215. science

1. Boyle’s law states that if you squeeze a fixed amount of a gas into a smaller volume, the pressure will increase. Explain why in your own words.

216. math

a memo cube is1 cubic unit. christine packs 6 memo cubes into a box. there is room in the box for 8 more cubes.what is the volume of the box?

217. math

Calculate the are of triangular cross-section and also its volume.

218. Health

What should I do? I constantly have suicidal thoughts...

219. Cosmology

The Hubble sequence is useful for distinguishing galaxies on the basis of many properties. Which of these does not correlate well with Hubble type? stellar age dust content luminosity color

220. Cosmolgy

Which of these is the correct relationship between b, the bias factor, the fluctuations in mass (Δρ/ρ)mass and the fluctuations in light (Δρ/ρ)light? b2(Δρ/ρ)light = (Δρ/ρ)mass−1 (Δρ/ρ)light (Δρ/ρ)mass=b (Δρ/ρ)light=b(Δρ/ρ)mass

221. Cosmology

What explains the observation that galaxy clustering is stronger at higher redshifts, which is an apparent reversal of the trend out to about z ~ 1? It is difficult to measure peculiar velocities Rich clusters have more galaxies than poor clusters Density

222. Cosmology

The majority of galaxies (by number) are: lenticulars barred spirals dwarfs giant ellipticals

223. Statistics

Find the average of the distribution given below. Value Percent of entries -16 10 -3 25 5 45 8 20

224. Applied Calculus

Let f(x) = x3 − 4x2. Find the point(s) on the graph of f where the tangent line is horizontal.

225. algebra

X= log base 3 1/27

226. MSITA

What part of the formula is entered directly as a value? constant. case. argument. operator.