1. Math

Does anyone know the answer to the math riddle "Did you hear about..." the answer is 12 words and it's pg 167.

2. science

What is the magnitude of g at a height above Earth's surface where free fall acceleration equals 6.5m/s^2?

3. english

Read the following paragraphs carefully and compare them. Paragraph #1 Since every person has only one opportunity to live each hour of his life, the time must be spent wisely. He should spend it thoughtfully. He should care what he does with his time. He

4. chemistry

Aqueous silver nitrate reacts with aqeous potassium iodide in a double-replacement reaction to produce a precipitate of silver iodide. If 34.6 ml of 0.563 M silver nitrate are used with 148.4 ml of potassium iodide: a) What molarity of potassium iodide

Multiple choice When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen, how many grams of carbon dioxide were produced in the reaction? a)40 b)22 c)58

6. Chemistry

Consider the following generic chemical equation: 2W + 3X ? 3Y + Z When 5 units of W and 6 units of X are allowed to react, the limiting reactant would be: a)W b)x c)Y d)Z

7. chemistry

Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 3.45 g of hexane is mixed with 16.3 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be

8. English

The following lines are from Alexander Pope's "An Essay on Criticism." In it, Pope (1688-1744) gives his opinions on the secret of good writing, opinions that were very consistent with his times. Answer all questions based upon these lines. Those RULES of

9. algebra

Kenny buys mixed nuts at a corner market for per pound. The cost is a function of the number of pounds of nuts bought. What is the graph of the function? Is the function continuous or discrete?

10. World geography

This very southern city in Africa is in an area of moderate rainfall

11. Chemistry

A chemist ran the reaction and obtained 5.70 of ethyl butyrate. What was the percent yield? How do I solve this problem?

12. Science

unscramble the letters rorpsfgnloadeeasi to make a phrase

13. calculus

Anti Derivative of F''(x) = 4 + 6x + 24x^2, f(0) = 3, f(1)=10 Not sure how to find the value of the constant for F'(x).

14. geometry

Hexagon D and hexagon H are regular hexagons. The scale factor from hexagon D to hexagon H is 0.25. One side of hexagon D measures 18 cm. What is the length of one side of hexagon H?

15. Math

Greta said that the product of two prime numbers must also be a prime number. Joan disagreed. Who is correct?

16. chemistry

What volume of 2.00 M HCl must you use to prepare 100. mL of 0.500 M HCl? (Hint: Just use the dilution equation! MiVi = MfVf)

17. statistics

the random variable x is known to be uniformly distributed between 70 and 90. the probability of x having a value between 80 to 95 is

18. physics

To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water.She finds that the specimen weighs twice as much in air as it does in water.The solid part of the specimen has a density of 5.0 multiplied by

19. Honors Chemistry

What is the Lewis dot diagram for C2Cl2?

20. socials

for other event in 1960 i draw a missile for cuban missile crisis. and for caption i write beside it that U.S planes took photographs showing that USSR was installing offensive nuclear missile in Cuba. Or I write beside that Khrushchev agreed to take out

21. math

ok this is in my practice book. there are 33 students in the chess club. there are five more boys than girls in the club. write and solve a system of equations to find the number of boys and girls in the chess club?

22. Chemistry

The adult blue whale has a lung capacity of 5.0*10^3L. Calculate the mass of air (assume an average molar mass 28.98 g/mol ) contained in an adult blue whale’s lungs at 0.3 degrees Celcius and 1.10 atm., assuming the air behaves ideally. Calculate the

23. statistics

Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2 degrees F and a standard deviation of .62 degrees F. suppose we take a sample of eight healthy adults. what is the probability that their mean body temperature

24. algebra 1

429 people attended a play. The admission was \$1 for adults and \$0.75 for kids. The receipts from the play totaled \$372.50. How many adults and how many kids went to the play?

25. Chemistry

How many oxygen atoms are represented in the formula Fe2(SO4)3?

26. Government

In contrast to the speaker of the House,the Senate majority leader: A. plays a key role in formulating the majority party's legislative positions. B. seeks to develop influential relationships with his/her colleagues. C. Holds a position that is defined in

27. statistics

Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2 degrees F and a standard deviation of .62 degrees F. suppose we take a sample of eight healthy adults. what is the probability that their mean body temperature

28. english

Use one of the following topic sentences to write a well-developed paragraph of approximately 150 words. Supply the specific details or examples that support the topic sentence you choose. •Our dog is a nuisance to the neighbors. •Baby-sitting is an

29. chem sorry the last one did not have the question

A sample of PCl5 weighing 2.69 grams is placed in a 1.000 liter flask and vaporized completely at 250 o C. The final pressure observed at this temperature is 1.000 atmospheres. Note that some, but not all of the PCl5 decomposes according to the equation:

30. Physics

A racing car has a mass of 1540 kg. What is its kinetic energy if it has a speed of 110 km/h? Assume that air resistance is negligible.

31. Chemistry

A gas occupies a volume of 0.500L at 125 degrees Celsius and 0.443 atm. What mathematical expression will yield the correct temperature at 0.750 L and 0.689 atm? Is it the combined gas law of P2V1/T1=P2V2/T2?

32. geometry

To the nearest tenth of a cubic inch, how much volume is added to a spherical balloon whose radius grows from 10 to 20 inches long?

33. Psycholofgy

Help is needed badly! Can someone tell me if this the correct answer? Please help! Annabelle is in the grocery store when she notices her heart is racing, and she becomes very dizzy. She is shaking so that she is barely able to stand up, and she cannot

34. geometry

A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5.

35. physics

Two slits are separated by 0.18 mm. An interference pattern is formed on a screen 80 cm away by 656.3-nm light. Calculate the fraction of the maximum intensity 0.6 cm above the central maximum.

36. English III

Clear communication in a government memorandum would most likely be hindered by slang idioms jargon dialect i really don't get this question please explain thanks.

37. Career planning

When considering a post-secondary option, you should consult which of the following sources?

38. physics

A soccer ball of mass 450 grams is initially moving horizontally east at 12 m/s. You kick it so that it moves horizontally north at 13 m/s. The collision lasts 0.04 s. Find the magnitude and direction of the average force you apply to the ball. |F| = Angle

39. Chemistry

What volume would 1.5 x 10^25 molecule CO2 occupy at STP?

40. math

A plane flies the first half of a 5600 km flight into the wind in 3.5 hours. The return trip, with the same wind, takes 2.5 hours. Find the speed of the wind and the speed of the plane in still air.

41. math

If a school has lockers with 50 numbers on each combination lock, how many possible combinations using three numbers are there.

42. physics

One dimension. In Fig. 13-32, two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 4.00 mA. A third particle C, of mass 80.0 mA, is to be placed on the x axis and near particles A and B. In

43. geometry

In problems 1 and 2, the initial point and the terminal point of a vector are given. Write the vector in component form. 1. Initial point: (0, 0); Terminal point: (3, -4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 2. Initial

44. Alg2

Radioactive iodine is used to determine the health of the thyroid gland. It decays according to the equation y=ae -0.0856t where t is in days. Find the half-life of this substance. Round to the tenths place.

45. Physics

What is the age in years of a bone in which the ratio 14C/ 12C is measured to be 2.3×10^−13?

46. Physics

A uniform horizontal rod of mass 2.2 kg and length 0.63 m is free to pivot about one end as shown. The moment of inertia of the rod about an axis perpendicular to the rod and through the center of mass is given by I = ￼￼￼ml2/12 If an 8.5N force at an

47. math

the area of a rectangular table =82 square feet if its length is 8 feet longer than its width find the dimensions of the table

48. Calculus

A cylindrical water tank has a radius of 2 feet and a height of 6.0 feet. Compute the work done to pump the water out of a filled tank through the top. [The density of water is 62.4 lbs/ft3.]

49. english

Explain how a word can be a morphemic noun and a syntactic adverb in the same sentence

50. chem

A sample of PCl5 weighing 2.69 grams is placed in a 1.000 liter flask and vaporized completely at 250 o C. The final pressure observed at this temperature is 1.000 atmospheres. Note that some, but not all of the PCl5 decomposes according to the equation:

51. chemistry

How many liters of HCl are produced by the reaction of 5.7 L of hydrogen with an equal amount of chlorine? The reaction occurs at STP.

52. alegebra 1

in some states in order to drive you must be at least 16 years old to obtain a driver's lisense. write an inequality to express this situation

53. U.S history

Choose two changes that came about from the Civil war and for EACH ONE CHOSEN Explain how the Civil War brought about the change and Evaluate its effect on American Society

54. physics

Two asteroids, each with a mass of 6 million kilograms are attracted gravitationally with a force of 0.75 N. How far apart are their centers?

55. physics

One dimension. In Fig. 13-32, two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 4.00 mA. A third particle C, of mass 80.0 mA, is to be placed on the x axis and near particles A and B. In

56. Agebra Word Problem

What a steal of a Deal! Hunter went to TV City to buy a new TV. When he got there, he found that the manager was offering a 25% discount on every TV in the store. The one Hunter wanted was last year's model so he got an additional 10% discount on his

57. chemistry

What is the limiting reactant when 31.5 g of CuO are exposed to 2.7 g of H2 according to the equation CuO(s) + H2(g) −→ Cu(s) + H2O(g) ? 1. Neither is limiting. 2. Unable to determine. 3. CuO 4. H

58. Geometry

in each of the following relationships among marked angles are given below the figure. find the measures of the marked angles a. m(

59. Psychology

Need help please! I need to know if this the correct answer. Please help! Regarding schizophrenia, which of the following statements is FALSE? I picked A a. Schizophrenia involves a "split personality," in which a person has two distinct personalities, one

60. chemistry

A 2.97 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51C, the normal boiling point of CCl4 is 61.2C. The boiling point constant for CCl4 is 4.95 K ·

61. Alg2

Zeus Industries bought a computer for \$2500. It is expected to depreciate at a rate of 20% per year. What will the value of the computer be in 2 years?

62. Chemistry

Determine the pH (to two decimal places) of a solution prepared by adding 15.9 mL of 0.0551 M sodium hydrogen oxalate (NaHOOCCOO) to 0.488 g of sodium oxalate (Na2OOCCOO). Hydrogen Oxalate pKb of 12.77 Oxalate pKb of 9.81

63. Physics

What is the age in years of a bone in which the ratio 14C/ 12C is measured to be 2.3×10^−13?

64. Chemistry

A 35.0 ml sample of 0.225 m HBr was titrated with 42.3 ml of KOH. What is the concentration of the KOH

65. chemistry

How many grams of lithium nitrate, LiNO­3, are required to prepare 3.00 × 102 mL of 2.00 × 10−1 M solution?

66. Biology

1.The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?

67. MATH

the figure shows that the angle of elevation to the top of the building changes from 20 degree to 40 degree as an observer advances 75 feet toward the building. Find the height of the building to the nearest feet.

68. physics

a straight road is inclined 30 degees to the horizontal and a man is walking along the road at the rate of 2 and a half miles an hour. how many feet does he ascend vertically against the force of gravity in 15 minutes?

69. NEED HELP...how do i draw a visual for this ques?

A son and his father take a daily walk up a hill. It is 1.5 km to the top of the hill. As the father gets older he can only walk half the speed of his son. So they start together but the father trails his son. The father reaches the halfway point when the

70. math

christine went shopping and bought each of her six nephews a gift, either a video costing \$14.95 or a Cd costing 16.88. she spent 91.63 on gifts how many videos and how many cd's did she buy

71. physics

A red bead releasd from rest at height H slides down a wire without sticking to a green bead initally at rest. The mass of the green bead is half that of the stuck together beads both continue to slide down the wire and then slide back up. With the

72. math order from least to greatest

can you check my work i need order least to greatest 6 problems. 1) 0.2222 1/5 0.02 i got: 0.2 0.2222 0.02 2) 1.1111 1 1/10 1.101 i got: 1.1 1.101 1.1111 3) 6/5 1 5/6 1.3333 i got: 1.2 1.3333 1.83333 4) 4.333 9/2 43/7 i got: 4.3333 4 3/7 9/2 5) 0.1333 2/75

73. Chemistry

What is the coefficient in front of carbon dioxide when the following equation is balanced? C3H8(l) + O2(g) → H2O(g) + CO2(g) a. 1 b. 3 c. 5 d. 6

74. Energy

1.Calculate the energy of a photon whose frequency is 2450 megahertz. What is the wavelength of waves transmitted by an AM radio station operating at a frequency of 840 kilohertz? 2.

75. Algebra

which factors would you multiply first to find the product of 2x5x3? Explain your reasoning.

From industry statistics, a credit card company knows that 0.8 of its potential card holders are good credit risks, and 0.2 are bad credit risks. The company uses discriminant analysis to screen credit card applicants and determine which ones should

77. Math

Which equation represents the perpendicular bisector of AB whose endpoints are A(8,2) and B(0,6)? 10 y=2x-4 20 y=-1/2x=2 3) y=-1/2x =6 4)y=2x-12 So I did Delta Y over Delta X and got -4/8 or -.5. Since it says perpendicular I made it the opposite sign and

78. geometry

A 5-foot tall girl stands 15 feet from a statue. She must look at an angle of 60 degrees to see the top of the statue. Approximately how tall is the statue?

79. Physics

An electric motor rotating a workshop grind- ing wheel at a rate of 147 rev/min is switched off with a constant deceleration of 1.24 rad/s2. How long does it take for the grinding wheel to stop? Answer in units of s Through how many radians has the wheel

80. College Physics

A monatomic ideal gas is compressed adiabatically from a pressure of 1.39 105 Pa and volume of 260 L to a volume of 39.0 L. What is the new pressure of the gas?

81. u.s history

what were the important political parties since the election of Andrew Jackson as president to the end of the reconstruction, when the country was left with only two major parties, racially and regionally divided? Include third parties. What did they stand

82. chemistry

The titration of HCl with NaOH is represented by the equation HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) What volume of 0.100 M HCl is required to titrate 50.0 mL of 0.500 M NaOH?

83. physics

An astronomical telescope has an object lens of 80cm and an eyepiece of 5cm focal length.If the image is formed 25cm from the eye piece when a distant object is viewed by the eye close to the eye piece ,detemine the magnifying power of the telescope.What

84. physics

A manufacturer wishes to produce crude benzene models for the chemistry department. The manufacturer plans to do this by punching regular hexagons out of steel. If the steel plate is 0.500 cm thick, What is the minimum shearing force needed to punch

85. Science

A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0°C. Assume that no heat is lost to the surroundings and that all the kinetic energy

86. physics

A home run is hit in such a way that the baseball just clears a wall 25.0 m high, located a distance 125 m from home plate. The ball is hit at an angle of 38.0° above the horizontal, and air resistance is negligible. (Assume the ball is hit at a height of

87. Alg2

An anthropologist finds there is so little remaining Carbon-14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon-14 the bones would have contained when the person was alive. How long

88. Alg2

The Mendes family bought a new house 10 years ago for \$120,000. The house is now worth \$191,000. Assuming a steady rate of growth, what was the yearly rate of appreciation? Round your answer to the nearest tenth of a percent (1.2% etc)

89. chemistry

calculate the amunt of heat required to completely boil 250g of water starting from room temp 22 degrees C

90. World History

16. All of the following encouraged Greek unity except a. a common language b. a common religion c. the geography of Greece d. belief in a common ancestor 18. The first metal to be developed was probably a. bronze b. copper c. iron d. steel B 22. The

91. geometry

Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object?

92. algebra 1

Solve by substitution. y=.8x+72 20x+32y=48 How do you get y? i got the x part but i can't seem to get the y part.

93. Chemistry

3)How many grams of sodium chloride do you need to weigh out to prepare 1.4L of 0.9% NaCL solution?

94. biology

mammals are most closely related t : A, amphibians B. birds C. arthropods tks.

95. Maths

triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD.

96. geometry

Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object?

97. Chemistry

Suppose 0.30 g of ethane is mixed with 0.47 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.

A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0°C. Assume that no heat is lost to the surroundings and that all the kinetic energy

99. algebra 2

this binomial can be factored as the product of a binomial and trinomial. Enter the binomial factor. 64y^15 + 125

100. Physics

A light ray in air strikes the surface of a lake at an angle of incidence of 46 degrees. What is the angle of refraction in the water?

too many years! if you divide this number by 2, you will get 3 multiplied by 6. Subtract 3 groups of 3 and you will get 3 multipliepd by 9. what is the number here is what we did 6 divided by 2 = 3 6x6 = 36 36- (3x3) = 27

102. calculus

Find the point on the graph of f(x)=√x that is closest to the value (4,0). (differentiate the square of the distance from a point (x,√x) on the graph of f to the point (4,0).)

103. calculus

Use logarithmic differentiation to find dy/dx for y=(1+x)^(1/x).

104. Psycholofgy

Please help! Is this the correct answer for the question? Please help! I picked C According to ______ therapists, changing the thinking patterns of anxious individuals can greatly lessen their fears. a. cognitive b. behavioral c. existential d. humanistic

105. US History (Finals Tomorrow Pleasee Help)

what were the important political parties since the election of Andrew Jackson as president to the end of the reconstruction, when the country was left with only two major parties, racially and regionally divided? Include third parties. What did they stand

106. Pensacola State

The solubility of NH3 in H20 is 518 g/L at a partial pressure of 760.0 torr. 1. Calculate the value of the Henry's Law constant for NH3. 2. calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.

107. biology

6) If the DNA sequence is GTAC, what will be the mRNA sequence? a) CATG b) CTUT c) CAUG d) UCGG 7) Given the codon UGC, what will be its anticodon? a) ACG b) TCG c) TGC d) AAT

108. Chemistry

Identify the compound with the highest entropy. a. solid ice b. room temperature water c. gaseous water d. frozen water

109. meaning

what does the word vagaries mean.Also put a sentence for it

110. Biology

which of the following DNA sequences would likely be the most stable? (only one strand of the helix is shown) A) CCGAGGCCT B) CGTATAGGG C) CCCGGGGCC D) CTAAGCTTT E) ATATATATA I know the answer is c but why is that true?

111. physics

A man throws a ball straight up in the air with an initial speed of 24 meter per second. How long does it take for the ball to return to him? What is the maximum height of the ball above the point where it was thrown?

112. algebra 1

9x+6y=78 3x-6y=-30

113. Algebra

Hopelessly loss in New Joisey If Anyone can help me I greatly appericate it. Anyone know how do we find the greatest common factor of a polynomial? Can you give me an example, showing your work. 2.When finding the greatest common factor of a polynomial,

114. Physics

A jogger runs in a straight line with an average velocity of 7.6 m/s for 6.3 min, and then with an average velocity of 3.6 m/s for 3.4 min. What is her total displacement?

Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate.

116. Grammar Check

Can you please check this to see if my grammar is correct. Thank you :) Thank you for all that you have done & continue to do, for me. I wouldn't be where I'm at today, if it wasn't for all your help. I feel like I have improved so much, since the first

It wasn't a test day, there were no oral reports due, and the class was getting ready to view a video. Regardless of the relaxed nature of the class, Baxter suddenly felt his muscles tighten and his heart rate increase as if he had a sudden fright. It was

118. government

which form of mass media is now the principal source of political information for about 80 percent of the population of the united states?

119. Calculus 1

Use the fundamental theorem of calculus to find the area bounded by f(x)=3 square root of x+2x and the x-axis between x-=0 and x=1

120. Algebra word problem

Megalodon Lives Angler went fishing and caught a monster of a fish! The head of the fish was 10 feet long. The length of the tail was equal to the length of the head plus half of the body. The body was as long as the head and the tail together. What was

121. e commerce or marketing, help pls

hi,good evening everyone can you help me on finding a clothing manufacturer resource system??? pls thank you

122. Chemistry

The solubility of NH3 in H2O is 518 g/L at a partial pressure of 760.0 torr. a. Calculate the value of the Henry's Law constant for NH3 b. Calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.

123. Social Studies

There are 8 languages on he peace pole that all state "may pece prevail on earth" what languages are used? I need help on this plz help thank u

124. Biology

can anyone tell me a little about MacArthur and Wilson's theory of island biogeography? I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and

125. ALGEBRA

You are playing Texas Hold’em against one other opponent. Your two down cards are 6 of (diamonds) & 7 of (diamonds). The first three cards to come up are 3 of (diamonds), 4♣ 9♠. The next card to come up is 10 of (diamonds). You and your opponent have

126. statistics

A life insurance salesman sells on the average 3 life insurance policies per week. What type of this distribution is? (2 marks) Let in a given week, calculate probability of the salesman will sell, i. at least one policy. (2 marks) ii. from two to four

127. Alg2

The annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in

128. Algebra 2

e^(x-2)-12^(2x+3)=0 Class is a college level math prep. Sorry for previous post being incomplete. I'm thinking: ln^(x-2)=ln12^(2x+3) (x-2)ln=(2x+3)ln12 xln-2ln=2xln(12)+3ln(12) xln-2xln(12)= 2ln+3ln(12) and not sure

129. physics

formula for a force of 5.00 n to the left causes a 1.35 kg book to have a net acceleration of 0.76 m/s sq to the left. What is the frictional force acting on the book.

130. NEED HELP drawing a visual for this question

Marnie collects red, blue and purple buttons. At the beginning of the year she has 360 buttons in a box. The ratio of red buttons to blue buttons is 4:3 and there are twice as many red buttons as purple buttons. a.What is the ratio of blue buttons to

131. Algebra2

The function f(t)=100,000/1+5000e^(-t) represents the population of an endangered species bird t years after they were introduced to a non-threatening habitat. a.In what year will there be 70,000 birds? b.How many birds were intially introduced to the

132. URGENT chemistry

Mulitple choice What is the concentration of H^+ in solution given the [OH^-]= 1.32x10^-4 a)7.58x10^-11M b)1.32x10^-11M C)1.0x10^14M d)not enough information E)none of the above

133. calculus

Find the constants a & b such that the function f(x)={2 if ≤ -1 {ax+b if -1

134. Physics

A string along which waves can travel is 2.50 m long and has a mass of 203 g. The tension in the string is 26.0 N. What must be the frequency of traveling waves of amplitude 7.70 mm in order that the average power be 85.0 W?

135. English

what is a Ninus’ Tomb & Metaphor?

136. chemistry

If 31.5 of molten iron(III) oxide reacts with 175 of aluminum, what is the mass of iron produced?

137. u.s history

Keeping in mind how the expansion of U.S. territory westward threatened the delicate balance of power in congress between free and slave states and Lincoln's stance on slavery, describe how key events (such as land acquisitions, agreements about how new

138. chemistry

indicate the concentration of each ion presentin the solution formed by mixing 20mL of .1M HCL and 10mL of .22 M HCL

139. maths

a regular dodecagon has a side lenght of 5.6cm find the side lenght of a regular octagon that has the same perimeter?

141. Chemistry

Calculate z pH of a buffer solun containing o.1 M acetic acid & 0.1 M solun of sodiumacetate when 1 mL of 0.1M HCl is added to 100 mL of buffer .

142. statistics

according to the energy information administration (officially energy statics from the US Government) the mean price for one gallon of unleaded regular gas in the US cities for the year 2007 was 2.80 A random sample of 30 pumps in georgia yielded and

143. Chemistry

2)How to prepare 5.6 liter of 50 mM NaCL solution (mol wt 58.44) using 10% NaCL stock solution?

144. environmental engineering /hydrology

estimate the volume of water that will infiltrate into a soil before surface saturation occurs using the Green-Ampt equation.The following data are known ; 1-saturated moisture content is 0.25 2-the initial moisture content is 0(zero) 3-the average

145. physics

a stick of linear density p=2kg/m rests on a disc of radius=1m. the stick makes an angle of 60° with horizontal and is tangent to the disc at its upper end .Friction exists at all points of contact ,and assume that it is large enough to keep the system at

146. math

Finding rate in math.... Rate=distance/time So if the distance is a circumference which in this case is 10 pie, and the time is 10 seconds. You multiply 10 and the circumference but is the 10 seconds TEN or 1/6

147. English

What was the Clinton Healthcare plan in the early 1990's? Know of any links or info that I can read up about it? Thanks!

148. early childhood education

the test to measure one's intelligence in the area of motivation, persistence,self-control, and handling relationships

149. Music Studies

What form is Philip Glass's "Einstein on the Beach" Knee Play 1? a. through-composed b. variation form I believe it is variation form since through-composed is supposed to be non-repetitive and this piece is quite repetitive. Is this right?

150. U.S history

How did the Civil War settle the question of Federal Supremacy?

151. maths

If S=1/2^2cos1 + 1/cos1¤cos2+1/2^3 cos1 ¤cos2¤cos2^2 + .......... upto 10 terms . If S= sina(cotb-cotc) where a,b,c€N Then find value of a+b+c. where¤ means multipication sign

152. European History

When did the GNP of the European Community surpass that of the United States? 1949, 1959, 1969, 1979, or 1989

153. pre-algebra

what happens if x = 1. Can you show me how to work out the problem?

154. Chemistry

Which of the following is NOT a statement of the second law of thermodynamics? a. The entropy of the universe is always increasing. b. Every naturally occurring process produces some entropy. c. Energy is conserved in quantity but not in quality. d. Every

155. grammar

Mom made a beautiful ornament. Is Mom a common noun or a proper noun

156. Math

On Tuesday 1.2 inches of rain fell. Two more inches of rain fell the next day. How many inches of rain fell on Wednesday? I don't know what to do

157. statistics

10. You have proposed a hypothesis that right-handed (RH) subjects will be superior in spatial analysis compared to left-handed (LH) subjects. Spatial analysis skills are being assessed on a scale which yields scores on a linear numerical scale. Given the

158. math

The distance d in miles that can be seen on the surface of the ocean is given by d = 1.6 h, where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 19.5 miles?

159. history

The prussian soldier who helped train Continental soldiers was a. Marquis de Lafayette b. Baron Friedrich von Steuben c. George Rogers Clark d. Thaddeus Kosciuszko guess is B but not sure

160. Physics

A block of mass of 24.0 kg is sitting on a frictionless surface. If the block is initially at rest, and a force of 3.0 N parallel to the surface is applied for 5.0 seconds, what is the final speed of the block?.

161. Geometry

tree is 6ft 3 in compute the cross-sectional area of the tree measured at 3 feet above ground

162. Math

Showers on Monday morning produced 0.5 inches of rain by noon. By p.m. a total of 2 inches of rain had fallen. How many inches of rain fell between noon and 6 p.m.? I think it's 1.5

163. history

explain the importance of building a foundation when evaluating historical events such as the boston tea party

164. chemistry

if you react 37.0ml of .762M sulfuric acid, how many liters of carbon dioxide gas are produced at a pressure of 725mm Hg and a temperature of 21 degrees celsius

165. Science

How many grams of hydrogen are produced from the decomposition of 100 grams of hydrogen peroxide? H2O2(l) → H2(g) + O2(g) a. 100 g H2 b. 50 g H2 c. 6 g H2 d. 1 g H2

166. history

explain the importance of building a foundation when evaluating historical events such as the boston tea party

167. chemistry

A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?

168. biology

please help me on true or false, i put false, according to natural selection, individual organisms can evolve new phenotpes in response to their environments.

169. English

Could you please check these two sentences, please? Thank you. 1) When I set the table, I lay on the the table cloth, the cutlery, the napkins, the soup and dinner plates, the water and wine bottles, the oil and vinegar bottles, the pepper shaker and the

170. Math

Solve the equation by the substition method. x-y=11 3x+10y=-6?

171. A=LxW

Length of a rectangle is 13 cm less than 5 times it's width. Its area is 28 square cm. Find dimensions of rectangle

172. physics

A particle of mass 1 kg initially at rest is displaced along the x-axis by 127 meters in a time of 20 seconds. What is the net force acting on the mass?

173. Algebra

I can't figure out this problem... 2x-2-(x-1) = 4-1+x-(-3x) solve for x Will you also show your work and check step Thanks, :)Juliet

174. geometry

16. Vector A has a magnitude of 3 in the leftward direction and B has a magnitude of 5 in the rightward direction. What is the value of 2A – B? You can also answer other types of problems using vectors. Try this one: Two forces are pushing on an object,

175. Math

The ratio of boys to girls in a class is 3 to 5. What percentage of the class are girls?

176. science

which of the following is a testable hypothesis helium, ammonia, oxidation-reduction?

177. science

i need an acrostics for punnett square!! i hv to have it by tommorrow and i cant think of anything and my science book isnt hellping much at all!!!! pwease helppp!and not an acrostics poem... i just need an acrostics

178. \$\$\$\$ Help!

Ok I'm entering this contest and like the winner earns 5,000 mercindise and more (it's a long to explain). In the contest we had to work in a team of 3 or more so me and my other 3 friends are working together and like we are deciding if we did win the \$\$\$

179. geometry

16. Vector A has a magnitude of 3 in the leftward direction and B has a magnitude of 5 in the rightward direction. What is the value of 2A – B? You can also answer other types of problems using vectors. Try this one: Two forces are pushing on an object,

As a professor at State University, you have been asked to write a letter of recommendation for one of your advisees who is applying for an internship. The student is now a senior and you have known her since she was a freshman. She has taken two courses

181. calculus

The base of a solid V is the region bounded by y=(x^2/64) and y=sq(x/8) Find the volume if V has square cross sections

According to behavioral treatment approaches, abnormal behavior is learned through: a. thoughts based on the perception of events. b. vicarious experiences. c. rewards and punishments. d. conflict experiences in early childhood. I think it is c but I am

183. Finance

Calculate the value of N for which Value at Risk is twice as much as the DEAR.

Keeping in mind how the expansion of U.S. territory westward threatened the delicate balance of power in congress between free and slave states and Lincoln's stance on slavery, describe how key events (such as land acquisitions, agreements about how new

185. Chemistry

1) Calculate the amount of sodium chloride, NaCL (mol wt 58.44) and potassium chloride; KCL (Mol wt 74.56) needed to prepare 500 ml of 1.25 NaCL/10 mM kcl solution dilutions in water.

186. Math

Express 120:80 as a ratio. Express 60:560 as a fraction.

187. Biology

4)You count your cells and have 8x10ᶺ5 viable cells/ml you want to see (dilute the cells) to end up with 2x10ᶺ5 viable cells/ml. What volume of cells will you put into 20 ml?

188. Intermediate Algebra

I need to know what the perpendicular equation is to x-3y=6 with the line through (-2,-9)

189. chemistry

what is an indicator for chemistry? How is this for a definition? Thanks A susbtance that changes colour when added to a base or an acid. The colour it changes to will depend on which it is added to.

190. English

Could you please check if everything is correct? Thank you. 1) angry/annoyed/furious/cross/happy/glad upset ABOUT something / WITH someone FOR doing something. Are you annoyed/furious/angry with me for being late? 2) excited/worried/nervous/crazy/cheerful/

191. Organic Chem

Why is propanol ammonia a better separator of red leaf extract in thin layer chromatography that propanol water?

Sec (23π/6)

193. math

how do you sketch the graph for 2x+y=4 using a domain -3x

194. calculus

Find the volume of the solid formed by revolving the region bounded by y=1-x, y=x-4, x=0 about x=7

195. biology

a) What type of bond is involved in complementary base pairing? -------------------------------------------------------- b) On what site of the large ribosomal subunit does the second tRNA attach during translation?

196. history

The attack on fort Ticonderoga gave the colonists valuable a. ammunition b. prisoners of war c. intelligence information d. british war maps I believe its c but not so sure

197. Psycholofgy

Help is needed badly! I have been on this one questions for the longest, so I'm trying to see if this the correct answer. I chose C If a person believes that his or her mind is being controlled by outside forces or that he or she is getting special coded

198. Math

What Is The Perimeter of a square that has one side that's 7 inches long

199. Poster

My friend ask if there any poster contests that she can partcipate?????

200. Physics

A 86.0 kg diver falls from rest into a swimming pool from a height of 6.3 m. It takes 1.44 s for the diver to stop after entering the water. Find the magnitude of the average net force exerted on the diver during that time.

201. Chemistry

If you decrease the pressure on the equilibrium mixture represented below, which direction would you expect the equilibrium to shift? C3H8(l) + 5O2(g) 4H2O(g) + 3CO2(g)

202. energy

What is the difference in energy for a photon of ultra-violet radiation, wavelength 319 nm and a photon of ultra-violet radiation, wavelength 238 nm.

203. geometry

The scale drawing for a business office is drawn so that 1 cm = 2 ft. If the length of the model is 4 cm and the width is 9 cm, what is the actual area of the business office?

204. physics

if you have and open end air column with a length of 75.0 cm and the fifth harmonic is 1175 hz, what is the fundamental frequency? what is the speed of the wave?

205. MEANING

What is the meaning for vagaries.also give me a sentence for it.

206. Math

Solve the equation by the substition method. x-y=11 3x+10y=-6?

207. Living environment

IN the Burgess Shale of canada, what basic group of living things were found in numerous body plans?

208. psychology

the effects of channel of presentation( visual and auditory)and type of processing(shadowing and non-shadowing)on recall of meaningful words

209. Algebra 1

Can someone tell me the relationship (equation) between: (1,3) (2,12) (3,27) (4,48) (5,75) Like, I need y=?

210. Chemistry-help

0.5g of Solid A is dissolved in 1L solvent to give a concentration of concentration 0.5g/L. UV absorbance spectrum was collected. How to calculate the absorptivity on the dried basis?

1) A lotery has 1,000,000 tickets and draws 100 tickets to award prizes. How many tickets would you expect to have to purchase before you would win a prize? 2) Lesley claims she can roll triples with three dice in fewer than 20 rolls. a)what is the

212. chemistry

calculate the heat liberated when 118g of water at 0 degrees C is frozen?

213. Music

What are good tips on how to write good lyrics to a song?

214. Physics

How much energy is stored in the 120 uf capacitor of a defibrillator if the potential across the plates is 4 x 10^3 V?

215. FÃ­sica

A colisÃ£o entre 2 carrinhos de supermercados o choque entre eles Ã© inelÃ¡stico?

216. Math 116

the perimeter of a triangle is 64 m, length is 8 m more than twice the width, what is the length

217. socials

for other event in 1960 i draw nuclear weapons and write beside as caption that many people thought nuclear war amounted to global suicide. or i write instead that Canada accept U.S Bomarc missiles that capable of carrying nuclear warheads and many people

A set of five different positive integers has a mean of 19 and a median of 21. What is the greatest value of the greatest integer in the set?

219. math

Ty cut his small pizza into sixths. he ate the whole pizza. how many pieces did he have left

220. health and safety

which of the following is best suited to a formative assessment of progress

221. Calculus 1

Use definition to find the area of f(x)=5x-2x^3 on interval [6, -6]with four sample right side

222. algebra 1

rewrite the equation so that y is a function of x. 2x = -3y + 10

223. Complements(English)

Would someone please write me a sentence? I want to see if I can correctly identify the direct object, indirect object, verb, subject, predicate nominative, predicate adjective. It only has to be a couple! Thanks!

224. Psycholofgy

Please help! I have read and read and still don't no for sure if this is the correct answer to this question. I picked C Which approach would explain that phobias are acquired through classical conditioning and the hypochondriac's "sickness behavior" is

225. chemistry

how many molecules of O2 are in 5.0g of O2? how many atoms of oxygen are in this many molecules?

226. statistics

a recent study suggests that the mean maximum temperature for the month of december in nyc is different from 41 degrees F. provide the null and alternative hypotheses for this test.

227. Algebra word problem

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone

228. statistics

what happens to the width of our confidence interval for mu if we increase the sample size but keep the confidence level the same ? a. it increases b. it stays the same c. it decreases d. it depends on the sample mean and standard deviation

229. chemistry

how many milliliters of dry CO2 measured at STP could be evolved in the reaction between 20.0 mL of 0.100 M NaHCO3 and 30.0 mL of 0.0800 M HCl

230. chemistry

4)You count your cells and have 8x10ᶺ5 viable cells/ml you want to see (dilute the cells) to end up with 2x10ᶺ5 viable cells/ml. What volume of cells will you put into 20 ml?

231. chemistry

Given--The solubility of NH3 in H2O is 518 g/L at a partial pressure of 760.0 torr. Question #1)-- Calculate the value of the Henry's Law constant for NH3. Question #2)-- Calculate the solubility of NH3 in H2O at a partial pressure of 225.0 torr.

232. Intermediate Algebra

I need to know what the perpendicular equation is to x-3y=6 with the line through (-2,-9)

233. algebra

write an equation of the line that passes through the given point and is parallel to the given line (-1,3), y=2x+2

234. Math

A rectangle with vertices at (2,5), (7,5), (7,8) and (2,8) is revolved around the line y=5 to obtain a cylinder. What is the volume of the cylinder? Express your answer in terms of pi.

1. Who gave Jim Sinclair a crucial piece of advice early in his career? 2. What (or who) connects the current drug store chain, London Drugs, to the gold rush era of British Columbia? please no google search links ;)

236. Korean

how do you say merry christmas in korean?

237. math

Draw a curve and shade the area between z=1.15 and z=1.35

238. Math

Draw a curve and shade the area between z= -.35 and z= 35

239. physics

a man is running on a circular track of radiur 4 m with a speed of 10ms-1.its angular speed is?

240. Math-Statistics

Find a confidence interval for ƒÊ assuming that each sample is from a normal population. a. P x = 14, ƒÐ = 4, n = 5, 90 percent confidence b. P x = 37, ƒÐ = 5, n = 15, 99 percent confidence c. P x = 121, ƒÐ = 15, n = 25, 95 percent confidence

241. Physics

Find the gradient and intercept of this equation q=kp^n and qm=kp^n

242. calculus

The pdf describing the chance that a given insect will die at a particular age, x days, is f(x)=4.1x10^-2 xe^-.2x. What is the chance the insect will live between 2 and 4 days?

244. physics

A family drives 400 milles in 8 hours. Explain how the acceleration of their car changed?

245. biology

Aristotle's system of classification, which 2 animals would be grouped together? A, seagulls and lizards B.seals and bats c. snails and butterflies d. whales and fish thanks

246. Statstics

. You have proposed that males will outscore females on a standardized test of math skills. You now are looking at your results from an SPSS t-test which is analyzing for significance at the á = .05 level with a two-tailed test. You see the following

247. chemistry

1 gram of C3H8 gas and 1 gram of O2 gas are delivered to a metal sphere with a fixed volume of 1 L. After the two gases are introduced, the two reactants are ignited and burned according to the balanced reaction: C3H8(g)+5O2(g)changes to 3CO2(g)+4H2O(g)

248. philosophy

According to Locke, if I don't remember performing some particular action, am I culpable for that action? Explain why or why not, making reference to Locke's theory of personal identity.

249. Statistics

. You are running an a single variable ANOVA with five levels of the variable, such as comparing IQ on 5th, 6th, 7th, 8th and 9th graders and the F-value is very large. The significance for the F value is equal to .0003. What can you conclude about the

250. Intro.Criminal Justice

which sentencing philosophy is best suited for cybercrimes

251. Physics

What is the acceleration of a proton in an electric field of 10^6 N/C?

3x3=36/8___

253. Chemistry

If you remove some CO2(g) from an equilibrium mixture represented below, which direction would you expect the equilibrium to shift? C3H8(l) + 5O2(g) → 4H2O(g) + 3CO2(g) a. right b. left c. no change d. indeterminable based on information given

254. history

Quick strikes and movements during the darkness were used by: a. Francis marrion b. Peter francisco c. Crispus Attucks d. Caeser Bacon I think its b, not sure

255. sociology

what would be an example of an experiment research method in sociology

256. computer networking

what kind of network information can you gather from issuing commands on a router or switch?

257. science

what is the role of an artist?

258. ssc 101

What is subculture

259. art

what is the role of an artist?

260. Music

What are good tips on how to write good lyrics to a song?

261. Phones

Lists of brands of phones

262. Living environment

How have the nostrils on modern whales changed from its ancient ancestors

263. math

X is a complex number. but X is not equal to 1. X^2011=1 Compute the sum X^(2n)/((x^n)-1) where n=1,2,3...2010

264. statistics

If you have 130 items and 85 of the items are Red, what percent of the itmes are blue?

265. Living environment

in what period of earth time did the great increase in animal diveristy

266. Algebra

What is the correct significant figures of 14.2 • 8.5 Options: 121 120 100 120.7 also can you explain why the one you picked is correct? Thank you!

267. psychology

the effects of mood and gender on proxemics

268. algebra

solve the equation: 7h^4+h^2-6=0

269. Pre-Cal

I'm trying to do this identities homework and i can't figure this one out. sec^4x + (tan^2x)(sec^2x)= sec^4x

270. statistics

Alice has grades of 98, 93, 82, and 89. If all of the grades count the same, what is the lowest grade she can make on the next test to have average of 92?

271. math

at 3:30pm kendra was 475 miles from home. At 7:00pm she was 258 miles from home Find rate of change in kendra's distance from home .... show work

272. math

translate to an equation F \$ 0.30 folders and N \$1.50 totals \$12 can you determine 3 different combination of folders and notebooks that total \$12

273. math

is 3 fifths and 30 18's proportional?

274. Chemistry

What is the pH for a solution with a hydrogen concentration of 1.00 x 10^6?

275. Physics

What is the acceleration of a proton in an electric field of 10^6 N/C?

276. calculus

Solve the following differential equation: f"(x)=sinx, x(0)=0, x'(0)=1

277. chemistry

why does rubbing alcohol feel cold when its applied to the skin?

278. Math

How many hours did Judy work on Monday,Tuesday,and Wednesday? Monday=3hours and 15minutes Tuesday=5hours and 30minutes Wednesday=4hours and 45minutes I got 1hour and 30minutes in all.. Is that correct?

279. English

I left out the following sentences. Could you please check them? 1) Colin decided to try to become a real eco-warrior and reduce his family's impact on the environment (I need a synonym for impact). 2) For one year in his familiy there wasn't a TV or a

280. Living environment

How have the nostrils on modern whales changed from its ancient ancestors

281. english

what is the correct way to write, (A characteristic I dislike is someone who is weak).

e+7=f

283. Math

Find the unit rate for 53 pages in 1 day?

284. Algebra 1

How do you do slope intercept form y=mx+b

285. geomatry

what goes into 14/56

286. socials

for other event in 1960 i draw picture about NORAD i think i draw logo on this maybe. and beside as caption i write Canadian government placed Norad forces on alert go go help U.S if that make sense.

287. socials

for other event in 1960 i want to draw something related with vietnam war but there too much things i not know what to draw i think hard and idea come that maybe i draw TV picture and write beside as caption that Vietnam first war seen live on TV.

288. geometry

what is the distance between N(5,2),K(-2,8)

289. sociology

how does race-conflict approach coincide with or oppose the concept of multiculturalismy

290. chemistry

how much heat is absorbed as 12g of hydrogen warms from 25 degree C to 78 degree C?

291. socials

do i need any more events to add onto the poster i make for cold war 1960 i think i got everything covered. but maybe i missied something

292. statistics

we are interested in testing at level of significance alpha =10 whether the population mean is different than 15. a random sample of size 25 is taken with a mean of 13.9. assume standard deviation is 2 and normally distributed population. find the values