1. math

how many prime positive integers are divisors of 555?

2. Chemistry

Consider the reaction: 2HCl(aq) + Ba(OH)2(aq) → BaCl2(aq) + 2H2O(l) ∆H = - 118 kJ Calculate the heat when 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.50 M Ba(OH)2. Assuming that the temperature of both solutions was initially 25 oC and the

3. math

three consecutive primes are summed. when the sum is squared, the result is 72,361. what is the largest of the three primes?

4. Chemistry

The specific heat of graphite is 0.71 J/g oC. Calculate the energy required to raise the temperature of 1.0 mol of graphite by 1.0 oC.

5. Organic Chemistry

Draw the most important resonance contributor of the following structure or compound. I'd think that the double bonded carbon would be the most important? Am I right? Thank you! h t t p : / / a c e o r g a n i c. p e a r s o n c m g. c o m / e p o c h - p

6. Chem

Calculate the number of grams of Fe formed when 0.300kg of Fe2O3 reacts. Equation: Fe2O3+CO-->Fe+CO2 converted .300kg to 300g Balanced Fe2O3+3CO-->2Fe+3CO2 So I started by trying this: 300gFe2O3(1molFe2O3/159.687gFe2O3)...and then I don't know where I

7. Math

Manohar has total of rs 250 as currency notes in the denomination of rs 20 ,rs10 and rs 5. The ratio of the numbers of rs 20 notes and rs10 notes is 3:4. If he has a total of 24 notes,how many notes of each denomination he has?

8. Chemistry

The fizz produced when an Alka-Seltzer® tablet is dissolved in water is due to the reaction between sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7): In a certain experiment 1.45g of sodium bicarbonate and 1.45g of citric acid are allowed to react.

9. psychology

Hormones that regulate the development and functioning of reproductive organs are called ________ hormones.

10. maths

A tree stands vertically on a hill side which makes an angle of 15 degree with the horizontal. From a point on the ground 35 meter down the hill from the base of the tree, the angle of elevation of the top of the tree is 60 degree. find the height of the

11. physics

a bullet of mass 7g is fired into a block of wood weight 7kg the block is free to move after the impact , the velocity of the bullet and block is 17 cm/sec. what is the initial velocity of the bullet

12. chemistry

In part B of my question, I was asked calculate the number of atoms in 0.615 mol of 13C (mass number of this Carbon is 13). I received the correct answer of 3.70E23 atoms. However, I do not know how to do Part C of my question, which asks "Based on your

13. Math

The perimeter of a pool table is about 7.8m. Four times the length equals nine times the width. What are the dimensions? I need to find 2 equations first. I got 2l + 2w= 7.8 I cant seem to get the other one

14. english

2. What is the importance of the concentration camps' goal of removing human spontaneity?

15. Chemistry

I have this problem.... Hexane has a density of 0.659 g/ml. How many milliliters (mL) would a student need to pour in order to get 49.5 g of hexane? Am I to solve by using mass = density x volume? And if so, is the answer 32.62mL?

16. math

anderson will roll two standard six sided dice once. what is the probability that the two numbers rolled will be the same? express your answer as a common fraction

17. Physics

A car traveling 88 km/h is 80 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck

18. Chemistry

I've tried to solve this question multiple ways I just can't seem to get it. I just don't understand what I should be doing. An organic liquid is a mixture of methyl alcohol () and ethyl alcohol (). A 0.220- sample of the liquid is burned in an excess of

19. psychology

Write a 350- to 700-word paper that explains which of Erikson’s eight stages of life you believe you are currently in. Explain why you think you are at that stage and describe that stage in your paper. What is the central question posed during that

20. math

A kayak moves at a rate of 12 mph in still water. If the rivers current flows at a rate of 5mph how long does it take the boat to travel 23 miles upstream?

21. psychology

Information that is chemically coded is transmitted from one neuron to another via neurotransmitters, terminal buttons, dendrites or axons?

22. Chemistry

Octane has a density of 0.692 at 20degree C . How many grams of O2 are required to burn 17.0gal of C8H18 ? Step-by-step explanation much appreciated with as much detail as possible so I can understand. Thanks!

23. Biology

4) If a person with blood type AB marries someone with type O, what would be the possible genotypes and phenotypes of their children? (show work if you can please)

24. Math

If a hemispherical bowl of radius 6cm contains water to a depth of h cm, the volume of the water is 1/3πh^2(18-h). Water is poured into the bowl at a rate 4 cm^3/s . Find the rate at ehich the water level is rising when the depth is 2 cm.

25. Chem

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.30 g of sodium carbonate is mixed with one containing 3.00 g of silver nitrate. How many grams of each of the

26. psychology

Is the thalamus located lateral of the temporal cortex or rostral to the cerebellum? Please provide me a link.

27. psychology

Does the axon or terminal button transmits information to neighboring neuron? I am confused between the two because they both transmits information. Please provide link to your answer.

28. Physics

Wes and Lindsay stand on the roof of a building. Wes leans over the edge and drops an apple. Lindsay waits, 1.25s afrer Wes releases his fruit and throws an orange straight down at 28 m/s. Both pieces of fruit hit the ground simultaneously. Calculate the

29. phys

Find every angle θ between 0 and 360° for which the ratio of sin θ to cos θ is -3.00. (Round your answer to the nearest degree.)

30. physics

An experimental rocket designed to land upright falls freely from a height of 2.88 102 m, starting at rest. At a height of 95.9 m, the rocket's engines start and provide constant upward acceleration until the rocket lands. What acceleration is required if

31. Chemistry

CoCl2(aq) + NH3(aq) = ? Cu(NO3)2(aq) +NH3(aq) = ? CuSO4(aq) +NH3(aq) = ? Could some one please tell me what the answers are?? I am stuck... what do I do with the NH3??? Thank you!!!!!

32. Math

how many socks would you need to remove from a drawer containing 10 blue socks, 15 black socks and 5 red socks, to in sure that you have at least 2 matching socks?

33. Social sciences

What is the difference between a skewed distribution and a normal distribution?

34. phys

An automobile tire is rated to last for 35,000 miles. To an order of magnitude, through how many revolutions will it turn?

35. math

The united state mint produced 69,360 nickel, 211,000,000 quarters. 634,800,000 pennies. and 120,000,000 dimes order the numbers from greatest to least.

36. math

if two angles are supplementery and one is 48 degrees more than 3 times the other what is the measure of the smaller angle

What is porosity and permeability? Thanks

38. Math for liberal arts

A single 6-sided die is rolled twice. C. Find the odds in favor of getting 2 numbers whose sum is greater than 5. I would simply like to be shown the steps to work this problem.

39. physics

meteoroid is speeding through the atmosphere, traveling east at 17.0 km/s while descending at a rate of 11.7 km/s. What is its speed, in km/s?

40. physics

your suitcase has not slid all the way down the slope and is going around at a constant speed on a circle ((r = 15.0 m) as the carousel turns. The coefficient of static friction between the suitcase and the carousel is 0.520, and the angle θ in the

41. botany

what is the difference between primary walls and secondary walls in plants. (specifically sclerencyma cells- which have secondary and parenchyma and collenchyma - which just have primary walls

42. math

Amanda is decorating her new home and wants to buy some house plants. She is interested in three types of plants costing \$4, \$8, and \$20. If she has budgeted exactly \$96 for the plants and wants to buy exactly 12 of them, what are her options? Let x be the

43. Physics

A skier leaves the end of a horizontal ski jump at 22.0 m/s and falls 3.20 m before landing. Neglecting friction, how far horizontally does the skier travel in the air before landing?

44. Database

Following report shows a grade report that is mailed to students at the end of each semester. Prepare an E-R diagram reflecting the data contained in the Grade Report. Assume that each course is taught by one instructor. MILLENIUM COLLEGE GRADE REPORT FALL

45. math

a rectangle has length of 28cm and weadth of 12cm.what is the area of the least number of these rectangles used to form te smallest square possible

46. Economics

Use supply and demand economic theory and diagram to explain why the prices of houses has changed so much over the last 3 years. I just need topics to use to write about

47. chemistry

Water (H20) is a liquid at room temperature and atmospheric pressure whereas hydrogen sulfide (H2S) is a gas under the same conditions. Based on this information, what can you say about the intermolecular interactions in these two substances. So would this

48. social studies

Can you help me compare and contrast liberal vs. conservative ideologies. Also, I need to provide a social and political example argument for each.

49. Chemistry

What is 6.3 x 10 to the 4th power converted to scientific notation

50. physics

The earth moves around the sun in a nearly circular orbit of radius 1.50 1011 m. During the three summer months (an elapsed time of 7.89 106 s), the earth moves one-fourth of the distance around the sun.

51. physics

A bus is moving at 30 m/s when the driver steps on the brakes and brings the bus to a stop in 2.6 s. What is the average acceleration of the bus while braking?

52. English

I am writing two paragraphs about two themes but I can't think of two conclusion sentences. The themes are friendship and sacrifice. Help please? Thanks

53. Geometry

If meaurement of angle DEF=(3x+5) degrees and measurement of angle KLM=(x+31) degrees, and goth angles are complementary to angle PQR, what are the measures of the angles?

54. science

An airplane flies due north at 235 km/h relative to the air. There is a wind blowing at 65 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

55. Physics

1. 2D motion. A cannon fires a ball with a velocity at 300 MPS. THe cannon has an angle of inclination of 50 degrees. The surface is flat. 1. What is the time of flight? 2. Where does it land? What is its maximum height? What is the velocity vector of the

56. chemistry

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help.

57. chemistry

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help.

58. chemistry

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help.

59. math

you are a shop owner who wants to market a new hat. the hat distributor will sell you one size at a reduced price. in one day you sell the following sizes: 8 1/4,8 1/2,6,7 1/4,7 1/4, 7,7 1/4,8,6 3/4,8 1/2,7 1/4, 8 1/4, 8 1/4,6 3/4,7 3/4 which size will you

60. chemistry

Acetone is a common solvent and has a density of 0.7899 g/mL. What volume of acetone, in mL, has a mass of 29.4 g?

61. Math

a/(a+2)-1 = -(3a+2)/(a^2+4a+4)

62. physics

A player passes a 0.600- basketball downcourt for a fast break. The ball leaves the player's hands with a speed of 8.40 and slows down to 7.20 at its highest point.

63. chemistry

how to find percent yield

64. Biology/Biotany

the rise of water in plants is presently most satisfactorily explained by which element: magnesium, sulphur, calcium, phosphorus, or manganese?

65. physics

A player passes a 0.600- basketball downcourt for a fast break. The ball leaves the player's hands with a speed of 8.40 and slows down to 7.20 at its highest point.

66. Physics

A stone is dropped from the top of a well. If the well is 23.1 meters deep, how long with the stone take to reach the bottom?

67. Financial

assume a \$1000 face value bond has a coupon rate of 8.5 percent pay interest semi-annually, ahd has an eight-year life. if investors are willingto accept a 10.25 percent rate of return on bonds of similar quality, what is the present value or worth of this

68. precalculus

Find the difference quotient by using f(x+h)−f(x)/h 1) f(x) = √(2x+1) answer (√(2x+1+2h) - √(2x+1))/h can you check please

69. math

P(t) = 1000 - 19.75t + 20t² - 1/3t³, what type of function is it?

70. Chelsea

on a farm there are rabbits and chickens. Altogether, there are 20 heads and 50 feet. How many rabbits and chickens are there?

71. Math

Find the probability whose odds against are given in the problem. Odds against are 2 to 5.

72. physics

A bicycle has a speed of 7.5m/s at 4.3sec and a constant acceleration of 2.6m/s^2. the bicycle is at the origin (on the positive x-axis) when 1.2sec. How far from the origin is the bike at 7sec? Answer in units of m

73. physics

A bicycle has a speed of 7.5m/s at 4.3sec and a constant acceleration of 2.6m/s^2. the bicycle is at the origin (on the positive x-axis) when 1.2sec. How far from the origin is the bike at 7sec? Answer in units of m

74. PSY/310

How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course of the 20th century? What are the reasons for this change?

75. circles

if the distance around the soccer ball is 30 inches what is the radius

76. statistics

Five thousand raffle tickets are to be sold at \$10 each to benefit a local community group. The prizes, the number of each prize to be given away, and the dollar value of winnings for each prize are as follows: Prize Number to Be Given Away Dollar Value

77. Chem

what is the pH of solution made by mixing 100 mL of 0.030M HCL with 200 mL water?

78. English 10

Write two derivatives for each spelling word. 1.) Synagogue 2.) Compatriot Any and all all help would be very much appreciated; thank you in advance.

79. phys

A rectangular plate has a length of (20.0 ± 0.2) cm and a width of (8.3 ± 0.1) cm. Calculate the area of the plate, including its uncertainty.

80. cell &molecular bio

Using the Einstein-Stokes equation, calculate the time for urea to diffuse across a cuboidal kidney cell with sides of 100micrometers. Assume the diffusion coefficient (D) of urea in solution is 2 x 10^-8 m2 sec -1

81. Statistics

The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life expectancy is between 64 and

Which is the best way to learn new material? A. Consistently study the same way. B. Review notes every day. C. Use techniques that appeal only to your preferred learning style. D. Use techniques that appeal to all three learning styles.

83. math

It is estimated that one third of one per cent of the Earth’s surface receives more energy from the sun than the total projected needs for the year 2014. Assuming the Earth’s surface to be 1.97 x 108 square miles. Find the area in acres.

84. Algebra

Word Problems (Addition/Elimination Method). Check if my answers are correct. 1.A girl bought 2 CDs and 3 DVDs for \$92. Each DVD costs \$4 more than the CDs. What is the price of each CD and DVD? My answer: CDs- \$16 and DVDs-\$20 2.A boy bought 20 stamps,

85. Linguistically & Culturally Diverse Learners

In order to promote language acquisition in beginning language learners, teachers should require students to speak, even if only one or two-word phrases. (Points : 1) True False

86. Physics

A hot air balloon containing an AP Physics student ascends vertically at a constant speed of 8 m/s. While ascending, he accidentally drops his rubber duckie from the gondola of the ballong. Seven seconds after it is dropped the duckie bounces off a roof at

87. math evaluatge expression

for c = -8 and d = -7 c (-d) i got : -8(-7) = 56 is this right?

88. Chem

How many moles of ammonium ions are in 8.794g of ammonium carbonate? I got .1832 as an answer and I was told that I was very close and I just may have done some kind sigfig or calculation error but I have no idea what it is since I did this problem so many

89. Physics

A monkey is hanging from a branch located exactly 24 meters along the ground from the hunter. The monkey is 14 meters above the ground. The hunter aims directly at the monkey and fires a water balloon at the monkey just as the monkey releases his grip. The

90. math

Suppose a license plate requires three letters ,followed by three digits.how many license plates are there if the letters are all different and the digits are all different

91. Sociology

I'm trying to double check my answers. These are the answers I believe to be correct. Please let me know if I am right or wrong. Thank you. . Networking has (Points : 1) a) Increased in importance b) Rely upon electronic communication c) Rely upon personal

92. Physics

The diagram below shows two vectors, A and B, and their angles relative to the coordinate axes as indicated. DATA: α= 45.9o β= 57.6o |A| = 7.9 cm. The vector A - B is parallel to the -x axis (points due West). Calculate the magnitude of the vector A+B. I

93. Physics

The electron gun in a television tube is used to accelerate electrons with mass 9.109 × 10−31 kg from rest to 3 × 107 m/s within a distance of 2.4 cm. What electric field is required? The funda- mental charge is 1.602 × 10−19 C. Answer in units of

94. statistics

The following is the tabulated data of the monthly commissions of the sales employees at La Verne Inc. Establish the frequency distribution. Present the data in a histogram format, draw the frequency polygon and the ogive (or cumulative polygon)

95. Health and Nutrition

What is a complete protein?

96. literary

I need an example of connotation from the Star Wars series in the form of a quote.

97. chemestry

what is the final temperature of aluminum when 26.4 cal of heat is added to 18.1 g of aluminum at 21.0 degrees c

98. Maths

If X=(2+√5)1⁄2 + (2-√5)1⁄2 and Y=(2+√5)1⁄2 - (2-√5)1⁄2 ,the evaluate x^2+ y^2

99. math

How many four-digit numbers divide by 5 ? Note:0001 is considered a 1-digit number .

100. Physics

A speeder passes a parked police car at a constant speed of 24.8 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.45 m/s2. How much time passes before the speeder is overtaken by the police car?

101. Physics

A speeder passes a parked police car at a constant speed of 24.8 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.45 m/s2. How much time passes before the speeder is overtaken by the police car?

102. science

a jet travels at 435m/s how long to travel 11.4 inchs?

103. math

How many seven - digit numbers less than 1,048,000 can be made using the digits 0,1,4,6,7,8 and 9

104. geography

Will you please check my answers? 1. What continents are located on a single land mass? Antarctica and Australia 2. In what direction would you be going if you were to fly from South Dakota to North Carolina? Southeast 3. In what part of the United States

105. math

How many seven- digit numbers leads than 1,048,000 can be made using digits 0,1,4,6,7,8 and 9

106. geometry

whats the value of each variable (7x-27)(4x+12)

107. chemistry

joules needed to melt a 525 g ice cube at 0 degree C and to warm the liquid to 15 degrees C (two steps please show work)

108. marh

Tenecia is thinking of a number with 8 place values the digit in the thousands place is 5 the digits in the hundred thousands and hundreds place are both an odd number greater than 7. The digit in each other place value is less one less than the digit in

109. math

nora has 1,555 on her computer .She rounds this number to the nearest ten ,to the nearest hundred,and to the nearest thousand . she gets three different rounded numbers. What are the numbers? why are there three different answers?

110. English

Hello! I'm writing a story for English class, and it's supposed to be somewhat like 'the devil and Tom walker'. I'm don't know how I should start the story so could someone maybe give me some ideas? (: The main character is Lilith Thompson. The setting is

A topographic map would be most useful for which activity? A. locating the name of the road where your friend lives B. finding out how much rainfall your town receives each year C. finding the highest point in your city D. determining what kind of soil is

112. education

Read the following scenario: You are a second-grade teacher at Happy Valley Elementary School. You are teaching language arts and social studies. Your classroom of 21 students consists of 7 white students, 5 Latino students, 4 African American students, 3

What is a A topographic map used for? thanks

Find the difference quotient by using f(x+h)−f(x)/h 1) f(x) = √(2x+1) answer (√(2x+1+2h) - √(2x+1))/h can you check please

115. Math

Can you please give me an example of a solution step? Thanks.

116. science

if a rock undergoes high temperatures and high pressures deep within Earth, what new type of rock will be foremed? Assume that the rock does not melt

117. math

1-How many three digit numbers are even? 2-how many three digit numbers are not even and do not divide by 5 ?

118. math

What are the Next two numbers in the pattern below? 999,800;999,900; 1,000,000;1000,100

119. Algebra

A car dealer will sell you a used car for \$5709 with \$709 down and payments of 233.75 per month for 24 months. What is the simple interest rate? Rounded to the nearest tenth.

120. chemistry

is resistant to corrosion physical or chemical

121. Chemistry

Camphor (C10H16O) has a heat of combustion of 5903.6 kJ/mol. When a sample of camphor with a mass of 0.124 g is burned in a bomb calorimeter, the temperature increases by 2.28 oC. Calculate the heat capacity of the calorimeter.

122. Physics

Suppose a brick has a mass of 4.50 kg. What is the brick's weight at the surface of the Earth

Is latitude the up and down lines on a map?Or the side to side lines? Thanks

124. math

i am less than one million.The number in the left most place is a 9. The numbers in each place to the right is 2 less than the previous number.I have no ones.What number am i?

125. Math

find the quotient show your work 9x^2-25y^2/3x+5y

126. Physics

The magnitude of vector is 18.0 units and points in the direction 345° counterclockwise from the positive x-axis. Calculate the x- and y-components of this vector.

127. math

An example of: Ratio of a to b

128. Physics

In deep space (no gravity), the bolt (arrow) of a crossbow accelerates at 187m/s^2 and attains a speed of 114m/s when it leaves the bow. For how long is it accelerated? Answer in units of m/s What speed will the bolt have attained 2.8 sec after leaving the

129. chemistry

How many moles of ammonium ions are in 8.794g of ammonium carbonate? I've tried this multiple times but some reason, I can't quite get the answer. If someone can show me step-by-step how to go about this problem, I'd really appreciate it.

130. Physics

A policeman travelling 60 km/h spots a speeder ahead , so he accelerates his vehicle at a steady rate of 2.22 m/s^2 for 4.00 s, at which time he catches up with the speeder. a) How fast was the policeman travelling in m/s? b) How fast is the police car

131. Calc

The region bounded by y=2.5x^2 and y=4x is to be rotated about both axes and the volume generated calculated by both the washer and the shell methods. 1)The volume of the region bounded by y=2.5x^2 and y=4x, when rotated about the x-axis is? 2) The volume

132. upland

arrange 3/4, 1 1/6, 10/13, 1 1/3, 67/100 from smallest to largest

133. Math

If b varies directly as the square root of w and b equals a negative 24 when w equals 36, what is w when b is equal to 1/8?

What two parts of the earth system is a paleontologist involved in? Thanks

135. Math

angle 2 =(4x + 4) angle 1 - 2x what is x

136. physics mechanics

A block weighing 17 N oscillates at one end of a vertical spring for which k = 120 N/m; the other end of the spring is attached to a ceiling. At a certain instant the spring is stretched 0.24 m beyond its relaxed length (the length when no object is

137. Physical Chemistry

Calculate the pressure and temperature at which 1.00 mole of CO gas will be in the same corresponding state as 1.00 mole of H2 gas at 2.00 bar and 30.0 degrees celsius. Use any critical constants necessary for both gases.

138. math

what is the least natural number that has exactly four distinct positive factors?

139. physics

a person weights 550 N rides a bike. the pedals move in a circle of radius 30 cm. if the entire wt acts on each downward moving pedal, what is maximum torque

140. math

what is the least natural number that has exactly five distinct, positive factors?

141. physics

a uniform meter stick is balanced at its midpoint with a single support. a 50 N weight is suspended at the 30 cm mark. at what point must a 20 N weight be hung to balance the system

142. math

what is the sum of the two least natural numbers that each have exactly six distinct,positive factors?

143. Physics

A batter hits a baseball at an angle of 30 degrees with the horizontal. The ball is hit at a height of 2 m and leaves the bat with a speed of Vo. What is the minimum Vo for the ball to clear the outfield fence? The fence is 5 m high and located 60 m from

144. geometry

find the value of each variable (6y-16) (4y+6)

145. Calculus

Find the volume of the solid generated by revolving the region bounded by the line y=5x+6 and the parabola y=x^2 about the following lines: a) the line x=6 b) the line x=-1 c)the x axis d) the line y=36 Thanks!

146. physics

A body moving with uniform acceleration has a velocity of 11.1cm/s when it's coordinate is 3.59cm. If it's x coordinate 2.48sec later is -3.58cm, what is the x-component of it's acceleration. Answer in units of cm/s^2

147. physics

A vector has a magnitude of 17.6 cm and makes an angle of 150.0° with the positive x-axis. What are the x- and y-components of this vector?

148. accounting

. For each of the following cases, prepare adjusting entries required of financial statements for the year ended (date of) December 31, 2011. (Assume that prepaid expenses are initially recorded in asset accounts and that fees collected in advance of work

149. Physics

While warming up in her tryout as a pitcher for the Montwood softball team, Anabel Parga throws a softball horizontally with a speed of 22m/s. a. If home plate is 19m away, how far should the softball fall from its initial straight-line path on its way to

150. math

how many 1/3 inch ribbons can be cut from a piece of ribbon that is 4 and 1/3 inches long?

151. environment

The ideal study plan includes which of the following? A. Quality preparation. B. Use of as much different intelligence as possible. C. Both A & C. D. An elaborate study environment.

152. Geometry

if EF=2x-10 FG=3x-9, and EG=21 find the value of x, EF, and FG

153. Math HELP!!!

If there is 60 pages I'm printing but I print it front and back how many pages will be. PLEASE HELP!

154. Physics

A car starts from rest and accelerates uniformly over a time of 5.21 s for a distance of 110 m. Determine the acceleratin of the car

155. Predicates

What is the predicate in this sentence? Steel is an important metal for buildings and tools.

156. math

Ling bought 5 dishes and 9 glasses for \$25.50. Each glass cost 50¢ cents more than each dish. How much did Ling spend the glasses

157. Algebra

factor completely -20x^2-12x+56

158. physics

A sky diver of mass 68 kg jumps from a slowly moving aircraft and eventually reaches her terminal velocity 46m/s Now consider the same sky diver jumping out of a faster airplane. At some point before she reaches her terminal velocity, she has velocity v2

159. physics

A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 9 m, y =6 m, and has velocity vo =(4.5 m/s)i + (−4 m/s)j. The acceleration is given by a = (6 m/s2)i + (1 m/s2)j. What is the magnitude of the displacement

160. Social St.

What are the three important consequences that the Neolithic Revolution had brought to humans?

161. math

f(x)=xx-x+4 what is f(x+h) - f(x) divided by h

162. science

why barium comnpounds are toxic

163. physics

A stone is dropped into a river from a bridge 43.3 m above the water. Another stone is thrown vertically down 1.06 s after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second stone?

164. study tips

I need study tips.By the way I'm home schooled.

165. literacy

scholarly journal articles are written by

166. math

Selena is making cookies. To make one dozen cookies, she needs 2/3 cup of brown sugar. How many cups of brown sugar does Selena need to make 4 1/3 dozen cookies?

167. math

Eva invested a certain amount of money at 5% interest and \$1500 more than that amount at 17%. Her total yearly interest was \$750. How much did she invest at each rate?

Which of these statements is true when you add a positive, nonzero integer and a negative, nonzero integer? A)The answer may be positive or negative. B)The answer is always negative. C)The answer is always zero. D)The answer is always positive.

169. geography

Can you check my answers? 1. Locate the Gulf of Aden off the eastern coast of Africa. Now, write a definition of a gulf? A gulf is a part of an ocean or sea that extends into land. 2. What lines measure distances east and west of the Prime Meridian?

170. Accounting

. Classify the following items as (a) an addition to the bank balance, (b) a subtraction from the bank balance, (c) an addition to the book balance, or (d) a subtraction from the book balance: _____ \$20 in service charges _____ A \$300 check deposited that

171. phy

A jet has a speed of 500m/s relative to the air in which it flies and is traveling north. There is a crosswind blowing from west to east at 100m/s. What compas heading does the plane appear to fly toward?

172. Chemistry

When 47.3J of heat are added to 13.0g of a liquid, its temperature rises by 1.76C. What is the heat capacity of the liquid?

173. math

A girl delivering newspapers travels 2 blocks west, 1 blocks north, and then 7 blocks east. (a) What is her resultant displacement? _________ blocks at __________ 2 ° counterclockwise from east. (b) What is the total distance she travels? __________

174. circles

if spoke of the ferris wheel is 20 feet long what is the circumference

175. college algebra

to travel 132 miles it take sue riding a moped 2 hours less time then it takes doreen to travel 56 miles riding a bike. sue travels 15 miles per hour faster then doreen find the time and rates

176. math

What is another way of saying -27 m/s east?

177. Economics

Use supply and demand economic theory and diagram to explain why the prices of houses has changed so much over the last 3 years. I just need topics to use to write about

178. circles

if the circumference is estimated c=3*d and the exact circumference is c=pi*d what would be the radius and the diameter

179. pre-algebra

A football team gained 4 yd, lost 2 yd, gained 11yd, lost 8 yd, and then lost 9 yd. Find the net gain or loss.

180. Physics

A large kite of mass 3 kg is flying through the air on a windy day. Currently, the tension from the string on the kite has a magnitude of 7.7 N at an angle of θ = 33.5 degrees. The current acceleration of the kite has a magnitude of a = 7.56 m/s2 at an

181. chemistry

It takes 62 mL of 0.124 M KOH to neutralize 46.7 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in units of moles/liter

182. Math

How do i figure out this question? There are two roads, one has a grade of 20% the other has an elevation of 15 degrees. Which road would be steeper?

183. Sociology

What is writing analysis???? Because I saw this in my Program of Studies book for middle school and high school students. Sociology This one-semester sociology course introduce students to the field by engaging them in discussion and written analysis of

184. chemistry

What mass of MgSO4 · 7H2O is required to prepare 300 mL of a 0.61 M MgSO4 solution? Answer in units of g

185. Math

suppose that W is a set which has 255 proper subsets. Determine the cardinality of w

186. statisitcs

suppose you got 75 items corrct on a 100-item, six alternative, multiple-choice exam what would your score be after we corrected for guessing?

187. Chemistry

28.5g of iron shot is added to a graduated cylinder containing 45.50mL of water. The water level rises to the 49.10mL mark. From this information, calculate the density of the iron.

what is a joint venture? what are the sources of finance for joint ventures? describe the appropriateness of the legal structure and some problems associated with changing from one legal structure to the other ...what are some advantages and disadvantages

189. chemistry

How many milliliters of 5.5 M HCl must be transfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of mL

190. Physics

. The cheetah is the fastest running animal in the world. Cheetahs can accelerate to a speed of 20 m/s in 2.5 an can continue to accelerate to reach a stop speed of 29 m/s. Assume the acceleration is constant until the stop speed is reached and is zero

191. pre - algebra

maria had \$123 she spent \$35,loaned \$20 to a friend and received her \$90 paycheck how much does she have now? so you would do 123 -20=103 and then 103 - 20=83 and 83 + 90 =wich is 173 so that would be the answer right?

What is the difference? |-9| - |13| =? A)-22 B)-4 C)4 D)22

193. Physics

A person walks 13.9◦ north of east for 2.51 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk? How far due east would this person walk?

194. Physics

A policeman travelling 60 km/h spots a speeder ahead , so he accelerates his vehicle at a steady rate of 2.22 m/s^2 for 4.00 s, at which time he catches up with the speeder. a) How fast was the policeman travelling in m/s? b) How fast is the police car

195. Chemistry

Please can someone answer this right now for me? What is the purpose of adding conc. HCL to the solution after cyclohexene has been oxidised by KMnO4 in the reaction of Cyclohexen + KMnO4 +H2O.

196. Physics

A person walks 13.9◦ north of east for 2.51 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk? How far due east would this person walk?

197. physics

A soccer ball is kicked from the ground with an initial speed of 14.5 m/s. After 0.272 seconds, ts speed is 12.4 m/s. (A) Give a strategy that will allow you to calculate the ball's initial direction of motion. (B) Use your strategy to find the initial

198. Smoke Signals English

has anyone seen movie smoke signals? i doing english project on it, need little help

199. calculus

An Open Box Of Maximum Volume Is To Be Made From A Square Piece Of Cardboard Twentyfour Inches On Each Side By Cutting Equal Suares Frm The Corners And Turning Up The Sides

200. math 1321

what is the digit in the ones place of the solution to 3^63

201. physics

A 980 kg car is pulling a 275 kg trailer. Together, the car and trailer have an acceleration of 2.12 m/s2 in the forward direction. Neglecting frictional forces on the trailer, determine the following (including sign).

202. Biology

3) Caucasian humans have a gene which determines the curliness of hair. Individuals with straight hair are homozygous for the straight allele while those with curly hair are homozygous for the curly allele. Heterozygotes have wavy hair. a) If two wavy

203. physics

A car coasts (engine off) up a 30 degree grade. If the speed of the car is 25m/s at the bottom of the grade, what is the distance traveled by the car before it comes to rest?

204. Math

Manohar has total of rs 250 as currency notes in the denomination of rs 20 ,rs10 and rs 5. The ratio of the numbers of rs 20 notes and rs10 notes is 3:4. If he has a total of 24 notes,how many notes of each denomination he has?

205. Fractions

A 161/2ft wire is cut into 8 pieces of equal length how long is each piece

206. Physics

I need major help with this please!!! On a safari, a team of naturalists sets out toward a research station located 6.9 km away in a direction 42° north of east. After traveling in a straight line for 2.1 km, they stop and discover that they have been

207. chemistry

Calculate the molality of acetone in an aqueous solution with a mole fraction for ace- tone of 0.171. Answer in units of m

208. Physics

The velocity vector of a sprinting cheetah has x- and y-components vx = +12.6 m/s and vy = -27.2 m/s. What angle does the velocity vector make with the +x- and −y-axes?

209. math

sue walks 3km at2km/h while Adrian walks 2km at 4km/h.Who walks furthest?

210. College physics

The magnitude of vector is 40.0 units and points in the direction 315° counterclockwise from the positive x-axis. Calculate the x- and y-components of this vector.

211. Physics

You and your friend throw balloons filled with water from the roof of a several story apartment house You simply drop a balloon from rest. A second balloon is thrown downward by your friend 2.1seconds later with an initial speed of 41.6m/seconds. they hit

212. math

my age now is one third of mum's age.8years ago,i was a fifth of mum's age was at that time.how old will my mother be 8 years from now

213. chemistry

How many grams of sucrose (C12H22O11) must be dissolved in 200 g water to make a solution in which the mole fraction of su- crose is 0.1? Answer in units of g

214. Math

Men in Black II grossed \$19,821,658 on 3557 screens on the opening Friday. If theaters are open from noon to midnight, have 15 minutes in between showings, and average \$6 a ticket for the 82 minute movie, find the average number of people who attended each

215. Science

Can someone please help me solve this homework problem for my chemistry class.Thanks A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?

216. chemistry

Your team performed replicate analyses of a sample and obtained an average 18.54 mM concentration with a relative standard deviation of 4.0%. If you later discover that a systematic error was made by a factor of 2 and the mean concentration should have

217. english

The letter is written by Max. I have to identify the simple & complete subject and verb in this sentence. Along with the verb. I am very confused.

218. SCI207

In-place fossil fuel resource statistics can be misleading because

219. Physics

If gravity was zero how would that effect the mass of an object? The weight?

220. history

Does a propaganda poster have to be opposing the cause? for example, propaganda poster for the 2012 elections Would this work... If i made some kind of propaganda poster to make people want to vote for Obama? (like some vote for obama propaganda

221. physics

what did galileo state about the motion of objects?

222. calculus 2

Can anyone help me calculate this? 28. lim x→∞ (e^x + 1)^(1/)x

223. Physics

A quarterback makes a pass, throwing the ball at 21 m/s and an angle of 60° above the horizontal. A) What is the maximum height of the ball in flight? B) How long does it take to complete the pass? C) How many yards (yd) does he manage to throw the ball?

224. Physics

In order to open tha clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. if a seagull flies to a height of 16.4m, how long will the clam take to fall? The acceleration of gravity is

225. Voiting and apportionment

Suppose the modified quota is 5.87. Whate is the lower quota? what is the upper quota? Find the arithmetic mean of lower and upper quotas. Find the geometric mean of upper and lower quotas.Round the given modified quota by comparing it with arithmetic mean

226. Physics

A quarterback makes a pass, throwing the ball at 21 m/s and an angle of 60° above the horizontal. A) What is the maximum height of the ball in flight? B) How long does it take to complete the pass? C) How many yards (yd) does he manage to throw the ball?

227. Physics

In order to open tha clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. if a seagull flies to a height of 16.4m, how long will the clam take to fall? The acceleration of gravity is

228. Physics

A lighthouse that rises h = 50 ft above the surface of the water sits on a rocky cliff that extends 19 ft from its base, as shown in the figure. A sailor on the deck of a ship sights the top of the lighthouse at an angle of θ = 28.0° above the

229. maths

Give an example of a function whose domain is {2,5,7} and whose range is {-1,0,3}?

230. ap

A sample of air contains 38.5 ìg/m3 of beryl- lium dust. How many atoms of beryllium are present in a room with dimensions of 8 feet by 12.9 feet by 17.1 feet? Answer in units of atoms

231. Chemistry

Can someone please help me solve this homework problem for my chemistry class.It's my last problem and I'm stuck!:/ Thanks :) A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?

232. math

Draw a model to represent the following quotient 2 1\2 / 2\3

233. ENGLISH

In which of the following sentences is the underlined word an object pronoun? A. I would like you to listen to me. B. You really should apologize to her. C. We returned our books to the library. D. I gave her a gift for her birthday.

234. physics

Two masses M1 = 3.00 kg and M2 = 7.50 kg are stacked on top of each other as shown in the figure. The static coefficient of friction between M1 and M2 is μs = 0.520. There is no friction between M2 and the surface below it

235. Statistics

AJ DAVIS is a department store chain, which has many credit customers and wants to find out more information about these customers. A sample of 50 credit customers is selected with data collected on the following five variables: LOCATION (Rural, Urban,

236. ap chem

A sample of 7.45 grams of NaOH is dissolved into 609 mL of aqueous 0.250 M NaOH (as-sume no volume change). This solution is then poured into 2.18 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in

237. physics

The earth moves around the sun in a nearly circular orbit of radius 1.50 1011 m. During the three summer months (an elapsed time of 7.89 106 s), the earth moves one-fourth of the distance around the sun.

238. geometry

Y is a point on HR with HO=(19x) miles and OR=48 miles. If HR=(27x) miles, find HO (in miles)

239. pre calculus

are you an online tutor

240. math

3r/4=1/3 what is r please explain

241. Chemistry

My question is 'what does the area under the curve represent?' it's a Maxwell-Boltzmann curve. My first idea was the number of particles but that's just what the y axis says and surely that wouldn't just mean under the curve. My second idea was to write

242. physics

Which has the greater acceleration, a car that increases its speed from 50 to 62 km/h, or a bike that goes from 0 to 12 km/h in the same time?

243. physics

A car is traveling 15 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 8.0 m/s2. How far does the car go before it stops?

-2/5+6

245. physics

The record for a marathon is 4 h, 36 min, 21 s. The marathon distance is 90.25 km. Determine the average speed in m/s of a runner achieving this record.

246. Biology

why do certain cells contain more of certain structures than do others

247. math

A softball team wins 5/8 of their 32 games. How many games did they win? How many did they lose?

248. Physics

An object with a mass of 3kg is dropped from 56.3 meters. How far above the ground is it's kinetic energy 1073J?

249. College Algebra

Solve each equation. If an equation has no solution, so indicate. (no complex #) a - 1 = _ 3a + 2 a+2 a2 + 4a + 4 reads: a over a+2 minus 1 equals -3a+2 over a2 (a squared) + 4a + 4

250. Physics

Air molecules create an upward force that impacts the free fall of objects on the surface of the Earth, differing form the way an object would fall in vacuum. Question: What kind of objects should be used for experimentation if we want to limit the impact

251. physics

A passenger on a moving train tosses a coin with an initial velocity of (-2.25 m/s) + 4.68 m/s) (from the point of view of the passenger). The train's velocity relative to the ground is (11.5 m/s). (a) What is the minimum speed of the coin relative to the

252. chemitry

what does it mean by how many moles of the limiting reactants in sodium bia

253. Physics

The leg and cast in Figure P4.18 weigh 290 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w2 weighs 125 N. Determine the weight w1 and the angle α needed in order that there be no force exerted on the hip

254. Math

A manufacturing company is thinking of launching a new product. The company expects to sell \$950,000 of the new product in the first year and \$1,500,000 each year thereafter. Direct costs including labor and materials will be 45% of sales. Indirect

255. physics

A passenger on a moving train tosses a coin with an initial velocity of (-2.25 m/s)x unit vector + 4.26 m/s)y unit vector (from the point of view of the passenger). The train's velocity relative to the ground is (11.5 m/s)x unit vector. (a) What is the

256. desh bhagat

a bullet of mass 7g is fired into a block of wood weight 7kg the block is free to move after the impact , the velocity of the bullet and block is 17 cm/sec. what is the initial velocity of the bullet

257. math

Name 2400 in two different ways

258. Calculus

find an equation of the line tangent to the equation at the given point. f(x)=5x^2 at x=10

259. statistics

Each year, approximately 160 colleges compete in the National Concrete Canoe Competition. Each team must design a seaworthy canoe from a substance not know for it's capacity to float. The canoes must weigh between 100 and 350 pounds. Find the midrange

260. science

Na and K have low ﬁrst and high second ionization potentials, whereas Mg and Ca have low values for both ﬁrst and second potentials. These observations suggest that

261. Chemistry

After 1.78 years, 1.990 g of a radioisotope remains from a sample that had an original mass of 2.000 g. Calculate the half-life of the isotope.

262. foundation physics

A player passes a 0.600- basketball downcourt for a fast break. The ball leaves the player's hands with a speed of 8.10 and slows down to 7.20 at its highest point.Ignoring air resistance, how high above the release point is the ball when it is at its

263. calculus *improper integrals*

A hole of a radius of 1cm is pierced in a sphere of a 4cm radius. Calculate the volume of the remaining sphere. I know that the volume of a sphere with an exterior radius is of: V = pie(R^2 - r^2) dH where R^2 is the exterior surface area and r^2 is the