# Questions Asked onMarch 8, 2011

1. ## math

An electronics store receives a shipment of 20 graphing calculators, including 3 that are defective. Four of the calculators are selected to be sent to a local high school. A. How many selection can be made using the originial shipment?

2. ## chemistry

Arrange the following aqueous solutions in order of increasing freezing points (lowest to highest temperature): 0.10 m glucose, 0.10 m BaCl2, 0.20 m NaCl, and 0.20 m Na2SO4.

3. ## Physics

An old car is traveling down a long, straight, dry road at 25.0 m/s when the driver slams on the brakes, locking the wheels. The car comes to a complete stop after sliding 305 m in a straight line. If the car has a mass of 755 kg, what is the coefficient

4. ## physics : different question

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s

5. ## math

The maximum, range of a projectile is directly proportional to the square of its velocity. A baseball pitcher throws a ball at 60 mph, with a maximum range of 242 ft. What is his maximum range if he throws the ball at 70 mph?

6. ## chemistry

number of moles of Cl in 2.7 mol CaCl2

7. ## Chemistry

What volume of a .500 M HCl solution is needed to neutralize each of the following: 10 ml of a .300 M NaOH solution 10 mL of a .200 M Ba(OH)2 solution

8. ## Organic Chemistry

If fructose, glucose, and sucrose are the only carbohydrates in honey, how could you use Benedict's reagent to determine the number of moles of sucrose in a 1.0g sample of honey?

9. ## Penn Foster

I am looking for the questions to these exams..all I keep getting are the darn answers...I want to compare my answers before I submitt anyone have the orginal questions? to these Anyone have the questions for the penn foster exams with the answers that go

10. ## geometry

An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.

11. ## physics

A net force of 1.6×10−15 N acts on an electron over a displacement of 5.0 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron in joules? (b) If the electron was initially at rest, what is the speed of the

12. ## math

Find the present value of \$9000 due at the end of 18 years at 11% per annum compounded quaterly????

How do you find the perimeter of a letter, example I, U, and J? The area for the I is 9 square cm. Do you still count all the sides or what? Any help would be appreciated!

14. ## Chemistry

The Concentration of Cu2+ ions in the water (which also contains sulfate ions) discharged from a certain industrial plant is determined by adding excess sodium sulfide(Na2S) solution to .800 L of the water. Molecular Equation: Na2S(aq) CuSO4(aq) -->

15. ## CHEMISTRY

How much heat is needed to melt 150g of ice? and How much heat is needed to change 150g of ice into steam at 110 degrees? My heat of fusion is 361 and my percent error is 8 if you need that. Answers quickly please :(

16. ## Calculus II

Consider the solid obtained by rotating the region bounded by the given curves about the y-axis. y = ln x, y = 4, y = 5, x = 0 Find the volume V of this solid. Help!!! Thank you in advance :(

17. ## Science

1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume

18. ## Chemistry

Rank the following in order by increasing boiling point and explain why? CH3Cl Rn CH4 CH3-CH2-OH

19. ## physics

An object is dropped from a platform 400 ft high. Ignoring wind resistance, how long will it take to reach the ground?

20. ## physics

A small domestic elevator has a mass of 454 kg and can ascend at a rate of 0.180 m/s. What is the average power that must be supplied for the elevator to move at this rate ? answer in watts.

21. ## Chemistry

What is the concentration of nitrate ions in a solution that contains M aluminum nitrate?

22. ## chemistry

ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H2O). What mass of water is produced by the reaction of 1.09g of oxygen gas?

23. ## Algebra

Explain how to use a graph to determine the number of solutions of a system?

24. ## physics

Rank these automobiles based on the magnitude of the impulse needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s

25. ## Physics

A 32-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 205 J from 435 J. How high does she rise during this interval? Neglect air resistance.

26. ## chemistry

1) a 100ml smaple of 0.18M HCLO4 is titrated with 0.27M LiOH. determine the ph of the soution after the addition of 66.67 ml of LiOH (this is at equivalence point) 2)a 100 ml sample of .20M HF is titrated with .10M KOH. determine th ph of the soution

27. ## Statistics

The weights of adult males are normally distributed with a mean of 172 lb and a standard deviation of 29 lb. 1.Find the weight that divides the upper 2% of weights from the lower 98%. Can anyone please explain how to do this,I have no idea from where to

28. ## math

3. Suppose a ladder is 12 ft. long. The base of the ladder is 5 ft. from a wall, and the top of the ladder is leaning against the wall. How far above the ground is the tip of the ladder?

29. ## ENGLISH

What are words with the ending shion except cushion and fashion?

30. ## math

what is 200000 times 56 =?

31. ## Math

I have to explain the vertical line test and how it is used.

32. ## Physics

In principle, anytime someone jumps up, the earth moves in the opposite direction. To see why we are unaware of this motion, calculate the recoil speed of the earth when a 65.0 kg person jumps upward at a speed of 1.70 m/s. v=?

33. ## Chemistry

A 30 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after the following volumes of acid have been added: 30 mL, 35 mL, 36 mL, 37 mL, and 40 mL.

34. ## Physics

The established value for the speed of light in a vacuum is 299 792 458 m/s. What is the order-of-magnitude of this number?

In the video game Corporate Cowboy, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of

36. ## Statistics

A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is the mean and standard deviation of those that wear glasses?

37. ## physics

A 0.110 kg baseball, traveling 32.0 m/s, strikes the catcher's mitt, which recoils 14.0 cm in bringing the ball to rest. What was the average force (in newtons) applied by the ball to the mitt?

38. ## physics

A spring gun is made by compressing a spring (assumed to be perfect) and latching it. A spring of constant k = 60 N/ m is used and the latch is located at a distance of 7 cm from equilibrium. The pellets have mass 4 g. What is the muzzle velocity of the

39. ## Chemistry

Put the following solutions in order of increasing vapor pressure. Explain your reasoning. .060 m K2CO3 .030 m LiC2H3O2 .120 m C2H6O2 (a non-electrolyte)

40. ## Chemistry

Hi, please can someone tell me if this is the right number of significant figures. 8.1 x 10 to the power of -3 would have 2 sig fig 910 would have 3 175.0 would have 3 please can some tell me if I've got this right Also how would I report each of the

41. ## physics

The current through a light bulb connected across the terminals of a 120 V outlet is 0.25 A. At what rate does the bulb convert electric energy to light 1Your answer was incorrect, but has changed from what was graded. W

42. ## algebra

What is the scientific notation for 0.000128?

repost MEAN=10 & STANDARD DEVIATION =2. FIND THE PROBABILITIES: 9.4 less than X less than 10.6 i have 2 different answers but am checking the answer. thank you one is 0.6179 the other is 0.2358

44. ## English

I am between two different thesis statements for Frazier either it is where the writing becomes italicized, "Remember to keep shower curtain inside tub at all times!" Or In the last paragraph from Operating the shower curtain is kind of tricky to there is

45. ## physics

What is the acceleration of two falling sky divers (mass 107.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight?

46. ## math

a student has two test scores in a psychology class. The mean of these scores is 76 and their range is 28. Use this information to determine the two scores. ( write a system of linear equations to solve the problem)

47. ## FRENCH

Conversation Culturelle Étienne is waiting for his friend Aurélie at the exit of the Champs-Élysées - Clemenceau métro station. They are going to see an art exhibit at the Grand Palais. Étienne: Enfin! J'ai attendu une demi-heure. Aurélie:

48. ## chemistry

How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following equation: N2(g) + 3H2(g)---> 2NH3(g)?

49. ## Math

If glenda rolled two six-sided number cubes nine times and computed the sum of the numbers rolled each time. If the mean sum of Glenda's rolls was 6 what was the total of the nine sums Glenda rolled? Suppose Glenda's rolls were 12,7,3,10,9, 2, 11, 7 and 8.

50. ## English

Complete the sentences by putting the verb in brackets into the Past Simple or Past Progressive. 1. I saw a light in your window as I ___________________ (pass) by. 2. The student ________________ (answer) the question when the headmistress came in. 3.

51. ## Chemistry

How many grams do 5.2×10^20 atoms of silicon weigh? Answer in units of g.

52. ## Chemistry

2. When a 1.000 g sample of the rocket fuel hydrazine, N2H4, is burned in a bomb calorimeter which contains 1200g of water, the temperature rises from 24.62C to 28.16C. If the C for the bomb is 840 J/C Calculate: q reaction for combustion of a one-gram

53. ## English

Read the passage below and complete it with the verbs in Past Simple from the box. _____________________________________ create,take,test, offer,be, publish,come out,have , give, find; _____________________________________ The PostScript language was

54. ## Geometry

I find these questions so difficult! I've been trying to solve them but I just can't. As they are diagrams they are hard to express in words, so the questions are the links below: 1) tinypic(.)com/r/25z7486/7 2) tinypic(.)com/r/4uhrg3/7 3)

55. ## Math

today Thomas deposited \$100,000 in a three-year,12% CD that compounds quartly. What is the maturity value of the CD?

56. ## Ethics

What are some advantages and disadvantage for a Christian following conscience rather than scripture.

57. ## Biology

You find an unusual organism growing on the bark of a dying tree. Under a microscope, you observe that its cells are eukaryotic, have cell walls, and do not contain chloroplasts. Into what kingdom would you classify this organism? Explain your decision.

58. ## grammar

What would be the simple predicate? The insects' bodies can turn wood into food. I think it would be turn.

59. ## chemistry

1. Would Ch3-OH or CH3-CH2-CH2-CH2-CH2-OH have a higher boiling point? Fully explain ypur answer. 2. Explain why a tertiary alcohol will not undergo an oxidation reaction. Give an example. 3. Compare and contyrast similarities/differences of condensation

60. ## physics

What is the acceleration (in meters/second^2) of a freely falling 74.0 kg sky-diver, if air resistance exerts a force of 264 N?

61. ## chemistry

A pickling solution is prepared by dissolving 278 g of NaCl in 4-1 L of water. Calculate the osmolarity of the solution

62. ## statistics

find the z score corresponding to a score of X = 100 for a mean = 80 and standard devation of 10

63. ## math z score

find the z score corrsponding to a score of X = 100 the mean = 80 and the standard devation = 5

64. ## Geometry

The vertices of ∆GHJ are G(-2,3), and J(1,3). If ∆KLM ≅ ∆GHJ, fing LM.

65. ## physics

A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (in meters/second^2) of the box?

66. ## math

Brookes quiz scores are as followed; 12/20, 12/18, 85%, 5/10 What is the order from least to greatest of the scores?

67. ## quantitative

how long will it take a sum of money to tripple itself at 16%p.a simple interest

68. ## English

In Emily Dickinson poems she has some of the first letters of words capitalized. Why so?

69. ## Algebra

a laptop charges up by 15 % every 20 minutes. How much charged will be after two hours?

70. ## geometry

The length of a box is 4 inches longer than its width, and the height is 2 inches shorter than the width. Which equation can you use to solve for the length of the box if the volume is 240 cubic inches? (Assume that the width of the box is x.)

71. ## precalc

in many parts of the coutry the average temp of a particular area may be modeled by a sin usoidal function. According to NCDC the average temp of k city is 92.2 in july and 32.2 in january assume that the period is 12 what is the best model for when july

72. ## geometry

WHAT IS THE JUSTIFICATION FOR

73. ## Math

what fractions are greater than 3/4?

74. ## physics

What is the difference between the second and third Newton’s Laws?

75. ## spanish

i need to give commands to fix the following sentences: 1.El perro tiene hambre 2.hay mucha basura en la cocina 3.los platos,la alformba y el coche estan sucios,yhay polvo en las mesas.

76. ## physics

Solid and hollow cylinders both roll from rest down an inclined plane. Explain the difference in speeds at the bottom.

is 13/20 greater than 3/4

78. ## geometry

what is the justification for m angle 1 = 60degree

79. ## literature

In the book code orange: How do they cure the small pox?

80. ## physics

The buoyancy force on the 490 balloon is F = 6kN , and the air resistance is F_D = (100v)N, where is in m/s. Determine the terminal or maximum velocity of the balloon if it starts from rest. vmax = ?

81. ## math

which algebraic expression represents tamara age if she is 7 years younger than her sister? Assume her sister's age is a. A. a-7 B. a+7 C. 7-a D. 7a I think the answer is c.

82. ## math

Can someone answer this ans show me how to solve? (16-8)+(4x4)

83. ## English

I forgot to include these 5 statements I still have doubts about. Thank you. 1) Since George Orwell was a child, he developed an independent-minded personality and then he professed (?) atheism and socialism. 2) He didn't accept the strict discipline

84. ## Math

What does x equal in this question? -0.75x - 1.25 = 6.25

85. ## geometry

what is the justification of m angle 1 + m angle 2 = 90degree

86. ## English - Native speakers

Hello once again! Can you tell me the difference between Don't underestimate me! and Don't underrate me! Which one is more used in English and what's the difference between those two words? Is there any other similar word? My second question. Can we say

87. ## maths

Need help to know what to do: solve the equation 9/(x=7)=4/(x-3) My book tells me to cross multiply, then move all the terms in x and the terms without x on separate sides of the equation. then divide by the coefficient of x. How do i do this? I don't

88. ## geometry

What is the justification for angle 1 and angle 2 are complementary

89. ## English

1. I am a freshman in high school. 2. I am a freshman of high school. (Which preposition should we use? Are both OK?) 3. There'll be a parade on the anniversary day. (How do you pronounce "There'll"?) 4. We'll choose between upper secondary school and

90. ## geometry

f(x)=2x²-Bx+4 and f(3)=13, what is the value of B?

91. ## SOCIOLOGY

HOW CAN THE CONCEPT OF STRUCTURATION HELP US TO UNDERSTAND BETTER THE CHALLENGES FACED BY MAMARRANDI?

92. ## English

1. I'm in the third year of middle school. 2. I'm in the third year in middle school. (Which preposition do we have to use?) 3. My school is a boys-only school. 4. My school is a boys' school. 5. My school is girls-only school. 6. My school is a girls'

93. ## maths

Expand the brackets in the following expression (5y-3)^2 My answer is 5y^2-3^2 The answer i worked out seems to simple but is it correct? If not can someone tell me what i need to do. thanks

Facrt

95. ## algebra

Factorise the expressions 9y^2-25 x^2-x-12 I'm totally stuck!

96. ## science

50 mL 3.0 M HCl(aq) that means hw much HCl i have to add

97. ## English

1. He got into college last year. 2. He went into college last year. 3. He got to college last year. 4. He went to college last year. (Are the four all the same in meaning? Which ones are commonly used?)

98. ## science

50 mL 3.0 M HCl(aq) that means hw much HCl . Can anybody ilaborate it

99. ## geometry

what is the justification of 60degree + m angle 2 = 90degree

100. ## English

An example of verbal irony is: A. Macbeth saying, "O, yet I do repent for my fury, that I did kill them." B. Macduff referring to Lady MacBeth as "O gentle Lady." C. Macduff saying "O horror, horror, horror." D. the witches saying, "fair is foul and foul

101. ## Math

How do I solve this 120-42÷ (10*4-4*6) Can you explain

102. ## chemistry

Why are some chemicals addictive in all people, some only in some people, and some are not addictive in anyone?

103. ## geometry

The medians of the legs of a right triangle are 3 square root 6 and 6. What is the length of the hypotenuse?

104. ## Chemistry

how much sulfur dioxide is needed to decrease the pH of 1L of water from 9.8 to 8.0?

105. ## chemistry

How would you prepare a standard solution of 1m HCL(5.6 of HCL is 1.18)?

106. ## algebra

write an equation for the line parallel to the x axis through the point 7,2

107. ## geometry

Write a flow proof:if angle 1 and angle 2 are vertical angles, and angle 2 and angle 3 are complementary, then angle 1 and angle 3 are complementary.

108. ## algebra

Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x4 + 0.067326x3 – 1.4367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is

109. ## Socials

Im working on a map about the railways in British North America, 1865. And it shows all the railways like the Grand Truck Railway, Maritime Railway, Intercolonial Railway, American Railway, Great Western Railway, and the Northern Railway. And basically the

110. ## HSM 220

what are thre ways human resources help support the strategic goals of human service organizations?

111. ## SCIENCE(CHEM101)

iF 23.74Ml OF 0.01470m nAoh are required to completely neutrize 25.00mL of gastric juice,calculate the concentration of the hydrochloric acid(in g/L )in the stomach gastric juice.show steps and calculations

112. ## Chemistry

The boiling point of phosphine, PH3(-88C) is lower than that of ammonia, NH3(-33C) even though phosphine has twice th molar mass of NH3. Why?

113. ## calculus

Under what conditions for f'(x) and f''(X) can a graph be " straight" wthout being horizontal?

114. ## Physics

after the infant's push, but before the box came to a stop, the box accelerated at a rate of 2 m/s^2. what was the coefficient of kinetic friction between the box and the floor during its motion?

115. ## algebra

i don't get this ok it says suppoes the discount is only 1 percent .what total discount amount would mr.fernandes receive on the 15 CDs

116. ## physics

In a lab experiment, a 1.5-kg cart traveling at 4.3 m/s in the +x direction collides with a 2.5-kg cart traveling at 2.7 m/s in the -x direction. After the collision, you find that the 2.5-kg cart is traveling at 1.9 m/s in the +x direction. How fast and

117. ## math

How many rectangles can be made with a perimeter of 10 units

118. ## physics

15000N on earth 2250N on moon Moon Radius= 1.74x10^6m Orbital Height 100km Total orbit 1.84x10^6m What is orbital speed?

119. ## MATH

The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 153 yards with a 7-iron how far should he average with a 5-iron Express your answer as an integer or mixed number. 183.6 The appliance store where the

120. ## physics

A proton is moving at 425 m/s. (a) How much work must be done on it to stop it?(answer in joules) (A proton has a mass of 1.67×10−27 kg.) (b) Assume the net braking force acting on it has magnitude 8.01×10−16 N and is directed opposite to its initial

121. ## chem 101

show calculations of the previous problem

122. ## math

how to explain this and solve this equation Y=5x2-10x+9

123. ## MATH

Martin takes out a simple-interest loan at 7.5 %. After 6 months, the amount of interest on the loan is \$69.64. What was the amount of the loan? is \$522.30 correct

124. ## us history

how did the events at chickamauga and chatanooga affect georgians

125. ## Chem

What volume of 0.0500 M Ba(OH)2 will react completely with 29.50 mL of 0.350 M HCl?

126. ## Chem

What volume of 0.0500 M Ba(OH)2 will react completely with 29.50 mL of 0.350 M HCl?

127. ## chemistry

Determine the concentration at equilibrium if you start with 2.3 grams of Hydrogen and 200grams of Iodine in a 2.3 liter container. If you now add an extra .25M of HI after equilibrium, calculate Qc. Recalculate now what the concentrations should be at

128. ## 8th grade honors english

How do I properly site sources on my research paper?

129. ## arithmetic

an arithmetic progression has 20 terms. the sum of all the even terms is 350. given that the first term is 5, find the common difference and the eleventh term.

130. ## math

HOw can I find the domain and range of this problem 4x^3-39x^2+93.5

131. ## precalc

cos(θ)=-((3)/(7)) where pi

132. ## social studies

How did the existence of slavery affect the development of the Articles and Constitutional governments?

133. ## General Chemistry

I did a lab on The Decomposition of Potassium Chlorate and I'm confused how to the vapor pressure of water in mmHg?

134. ## Math

Find a set of six whole numbers that have a mean, a median, and a mode of 50. The numbers cannot all be the same.

135. ## grammar

Linda Robbins worked in our payroll Department last summer.

136. ## Calculus

Differentiate the following ( do not simplify) a) ln(√sinx)

137. ## physics

Two sound sources radiating in phase at a fre- quency of 540 Hz interfere such that maxima are heard at angles of 0◦ and 21◦ from a line perpendicular to that joining the two sources.

138. ## PHYSICS

A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of

139. ## Biology

imaginary population of fruit doves, Half had purple head feathers and half had green head feathers. Describe how natural selection could act upon this population. What change might you see over time? (really need help with this, looked in my textbook i

140. ## english

how to write a good thesis for a research paper?

141. ## english

what is the appositive inthis sentences Charles Lutwidge Dodson is better known by his pen name,Lewis Carroll.

3m=63

143. ## Food Analysis

1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0.80l by adding water, what is the molarity of the resulting diluted solution? 2.How many ml of water will be required to dilute 11ml of 0.45Macid solution to a molarity of 0.1M? 3.Calculate the

144. ## PSYCHOLOY

CONTRAST TWO THEORIES OR PERSPECTIVES FROM LATE STAGE ADULT DEVELOPMENT

145. ## geometry

what is the justification of 60degree + m angle 2 = 90degree

146. ## Chem

I want to see if i got my answer correct for #1 but I need help on #2 1.A 150g aluminum pan containing 500g of water is heated on a stove for 5 minutes. The temperature goes from 23.5C to 48.9C. How much heat was absorbed. (s for Al is .900j/g C, s for H2O

147. ## MAth

how many degrees does the minute hand move from 4:00 to 4:30?

148. ## Math

Thankyou very much! I'm having trouble with this question about taylor series. how would i go about doing the following questoin? thank you! find the maclaurin series for the function sin(x)-x+((x^3)/3!) how do i do this? thanks aagain

149. ## Math

x/(x^2-16)-6/(x^2+5x+4)

150. ## Calculus

1. Find the slope m and an equation of the tangent line to the graph of the function f a the point (2, 38) f(x)=9x -2x +6

151. ## chemistry

if you have 1000g of a substance at -20 degrees celsius with a specific heat of .110 c/1 degree celsius and you add 12 kilojoules to it what is the resulting temperature?

152. ## english

what are words that have the same beginning sound as cushion has?

154. ## Physics

n an auto accident, a car hit a pedestrian and the driver then slammed on the brakes to stop the car. During the subsequent trial, the driver's lawyer claimed that the driver was obeying the posted 35.0 mph speed limit, but that the limit was too high to

155. ## math

can you explain how to do this 8w + 1.5= 25.5

156. ## Calculus

tan 0=1 csc 0 = sqrt. 2 cos 0 = sin 0 os 0 = cos (-pie/6) The 0s means that symbol for angle. Please someone help me do these problems.

157. ## Geography

What three countries are north of Mexico and considered to be part of North America?

158. ## Math

Debra is buying prizes for a game at her school's fundraiser. The game has three levels of prizes, and she has already bought the second and third prizes. She spent \$1.54 on each second place prize and \$0.77 on each third place prize. She wants the first

159. ## english

opposite of cold \choices of answers bucket quick preset raise rock sick sleep small story yell make large jump home glad close car bucket

160. ## math

scale drawing of a right triangle, base= 4ft, height= 2 ft, scale = 1/2 inches = 2ft, finf the area of the scale drawing.

aneshyam

162. ## math HELP!!

Are the following simplified fractions? 1.1/2 2.1/5 3.2/3 4.5/6 5.3/4 6.4/8,1/2

163. ## Algebra

six people can paint a house in 3 days, how long it would take two people to paint it? I should show steps. It is related to rte of work.

164. ## College Physics

n the approximation that the Earth is a sphere of uniform density, it can be shown that the gravitational force it exerts on a mass m inside the Earth at a distance r from the center is mg(r/R), where R is the radius of the Earth. (Note that at the the

165. ## Managerial Economics

A)Who has more monopoly power---Wal-Mart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game? Explain. B)Who has more monopsony power---Wal-Mart or teams in the National

166. ## AP Chemistry

There is an unknown amount of unlabelled monoprotic acid in an unknown amount of water titrated with a sample with a solution of NaOH of unknown molarity. After adding 10.0 mL of NaOH, the pH=5.0. The equivalence point is 32.22 mL of NaOH. What is the Ka?

Which of the statements is ALWAYS TRUE? A-A right triangle is a scalene triangle. B-An equilateral triangle is an isosceles triangle. C-An isosceles triangle is an obtuse triangle. D-A right triangle is an acute triangle. I got either A or D. I don't know.

168. ## Geometry

Tan12= 3/x what is the value of x? and how is that so?

I have a question about the owrd cubiertos in Spanish. Does ths word include la servillete el cuchillo el vaso la cuchara el tendor OR is it just like the plate and spoon, fork, knife and NOT the vaso or servillete(napkin)? The word and transaltion is

170. ## Physics

A student manages to get on the roof of a school and toss out a balloon with the speed of 10.0m/s. The height of the school is 25.0 m. How long was the balloon in the air?

171. ## English

Can you please check if these sentences are OK? Thank you. 1)Forensic science adopts different scientific methods to catch criminals. 2)In particular, scientists can examine a suspect’s fingerprints or check blood type. 3) They can also check teeth and

172. ## algebra

Factor polynomial completely: 9y^2 - 25yz -6z2

173. ## English

I forgot to include the following sentences. Thank you. 1) Forensic artists are also essential to catch criminals. They are required to possess two skills. 2) First, they need to have good interview skills as they have to talk to victims and listen to

174. ## english grammar

class vii analogies

175. ## eth125

Explain what is meant by the model or ideal minority. How is this label both a positive and negative one? How has the media contributed to prejudice and discrimination against Asian Americans? How might these problems be remedied? What does the Japanese

176. ## Calculus

The area of largest isosceles triangle that can be drawn with one vertex at the origin and with others on a line parallel to and above the x-axis and on the curve y=27-x^2 is.... A) 108 B) 27 C) 12 root 3 D) 54 E) 24 root 3

177. ## MATH

HOW DO YOU SOLVE A PI PI R STEP BY STEP?

178. ## math

what is 34 multiply 56?

179. ## physics

An object moves from the position r1=(2,-10,3)m to the position r2=(-2,3,7)m and then to r3=(3,-4,-2)m. Find a)displacement b)distance

180. ## Calculus

Evaluate the integral. S= integral sign I= absolute value S ((cos x)/(2 + sin x))dx Not sure if I'm doing this right: u= 2 + sin x du= 0 + cos x dx = S du/u = ln IuI + C = ln I 2 + sin x I + C = ln (2 + sin x) + C Another problem: S ((sin (ln x))/(x)) dx I

181. ## Math

a plane flies due north at 300 mi/h for 3 h then due west at 250 mi/h. If x represents the number of hours the plane is flying due west, determine for what values of x the plane will be more than 3700 mi from it's original point.

182. ## English

Read the following passage and choose where to insert these sentences. a) Magazines such as Fortune and Business Week were all mocking him. b) But it is true that Jobs was still losing money. In the early 1990s he was going c) Pixar Animation Inc. Was also

183. ## physics

Dear Sir; I am writing in response to your request for additional information in Block #3 of the accident reporting form. I put "Poor Planning" as the cause of my accident. You asked for a fuller explanation and I trust the following details will be

184. ## math

Two events are _________ if the outcome or occurrence of the first affects the outcome or occurrence of the second so that the probability is changed. Please Help Me . !

185. ## Scocial Studies

Who was the leader of China during WW2?

I have a question-I'm not sure of this translation: ¿Qué comes parea a uno? Does this mean What do you stop to eat at one or Where? I'm stuck on this one. Thanks you

187. ## trig

A surveillance satellite circles the earth at a hight of h miles above the surface. Suppose that d is the distance, in miles, on the surface of the earth that can be observed from the satellite. find an equation that relates to central angel (theta) to the

188. ## career

How do you do a resume? and could someone show me how to go about starting a resume?

189. ## Chemistry

How much lead (Pb) is in 3.01 × 10^12 atoms of lead? Answer in units of mol.

190. ## Quote Question

What are some really good quotes about the Latin American Revolution? Thanks -Allyson

191. ## Math degrees

how many degrees does the hour hand move in 2 hours

192. ## quimica

como se llama el gas que se desprende de mezclar acido acetico con vinagre?

193. ## religion

a muslim traveler

194. ## math

how do u find the volume of a prism,when each side 12?

195. ## Chemistry

S2O82-(aq) + 2I-(aq) ----------> 2SO42-(aq) + I2(aq) (I) Rate = k [S2O82-]x [I-]y Rate1 = k [S2O82-]x [I-]y ƒ´ [S2O82ƒ{] Rate = ƒ{ƒn ------------- ƒ´ƒnt Experiment data Experiment: 0.20M NaI,0.20M NaCl, 0.010M Na2S2O3,2% Starch,0.20M K2SO4, 0.20 M

196. ## physics

A car is traveling a road that includes two sides of an equilateral triangle with a constant speed s. What is the magnitude of the average velocity v of the car?

197. ## english

recommendation

198. ## Math

I have to define function. Would it be a set of possible input values? Not sure if I worded it correct.

199. ## algebra

Could you give an example of an exponential expression? thx, I cant think straight it's too late =P 11:00 pm here

200. ## financial accounting

I am having trouble figuring out my accounts payable and capital. Any help on going about and solving this would be greatly appreciated. I have listed the data below... Travis Fortney, an architect, opened an office on April 1, 2010. During the month, he

201. ## english

rosaq was nervous around the large dog whose moods were easily changable

202. ## MATH

CALCULATE THE AREA FOR THE FIGURE WITH SIDES 9YDS 6YDS 6YDS 6YDS 3YDS 12YDS

203. ## organic bio chemistry

how many mL of a 0.20M KOH solution is needed to neutralize 25 mL of 0.25 M H2SO4?

204. ## Economics

List the various causes of inflation and determine if they are an injection or a leakage. Demand-pull theory: This is a leakage. If all sectors in the economy try to buy more than the economy can produce, people may start to rely on imports. Therefore,

205. ## math

how can you use the multiplication facts for 3 to help you find the multiplication facts for 9

206. ## chemistry

What is the chemical structure, its principle source, its legals uses (if any) and its relative addictiveness on scale 1-10 : CAFFEINE

207. ## math

solve this problem using the power rule (10x^8) x (10x^10) =

208. ## geometry

IF THE RADIUS OF THE SPHERE IS 26 UNITS AND THE RADIUS OF POINT R IS 26 UNITS FIND CR.

209. ## Chemistry

How many atoms of carbon are present in 31.4 g of a compound that is 16.2% carbon, by weight? Answer in units of atoms.

210. ## Mathematics

Determine the shortest distance from a house situated at the origin to a road that is represented by the line 3y+x+18=0

Please check if I answered these correctly-Thank you I forgot to put accent on "i" in Si and I use spanishtypeit not manually on the keyboard-Please excuse lack of accent ¿Tienes hambre? Si, tengo hambre. ¿Tienes sed? Si, tengo sed. ¿La manzana es una

212. ## Spanish-Please check my work

Please check if I answered these correctly-Thank you ¿Tienes hambre? Si, tengo hambre. ¿Tienes sed? Si, tengo sed. ¿La manzana es una carne? No, la manzana es una verdura. ¿Qué comes para el desayuno? Yo como el cereal con leche. ¿Prefieres el

213. ## sanskrit

meaning of aneshyaami

Do charged particles always experience equal but opposite electrical forces? My answer is The electric forces are directly porportional to the quantity of the charge on the objects. Is that correct-we just started learning this and I'm trying to answer

215. ## wxmaxima help math mate!

one expression is y=log(-100493/40000)x the x is next to the (-100493/40000) same with the other expression y=atan(-100493/40000)x, y=exp(100493/40000x) approximate the region bounded by the given curves. be sure to specify a range of x and y that results

216. ## Algebra

Donna runs 4 miles in 30 minutes. How many miles can she run in 63 minutes?

MEAN=10 & STD DEVIATION=2. FIND THE PROBABILITIES: 9.4 less than X less than 10.6? i have 2 different answers but am checking the answer. thank you

what part of the book would you look in to find other book about the same topic

219. ## ap history

why did the cartoonist use "\$" instead of "s" for senate?

220. ## Physics

A certain piece of wire has a resistance of 250 ohms. if the wire is cut in three pieces and the cross sectional area of each piece is halved, what is the resistance of each piece?

222. ## math

Use each of the numbers 1 through 9 once in any order that you want to make and expression 2011

223. ## Math

I was assigned an ISU for Data management. In first part, it requires a thesis (Example: Why do teenagers pay so much for car insurance?), hypothesis and 3 main points to back up thesis. I told my teacher that I wanted to do about death rates, what factors

224. ## Chemistry

Please help me understand!..If you have 100.0mL of a 30.0% aqueous solution of ethanol, what volume of water is in the solution?

225. ## Chemistry

A 30 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after the following volumes of acid have been added: 30 mL, 35 mL, 36 mL, 37 mL, and 40 mL.

226. ## optimization calculus

a net enclosurefor practisinggolf shots is open at one end, as shown, find the dimensions that will minimize the amount of netting needed and give a volume of 144 m^3(netting is required only the sides, the top, the far end.)

227. ## physics, error calculation repost

I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive

228. ## physics

A 8.00 kg shell at rest explodes into two fragments, one with a mass of 2.00 kg and the other with a mass of 6.00 kg. If the heavier fragment gains 130 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain?

229. ## college

c= 1/2 f(s+k) solve for S S= 2C/f -k is this correct?

230. ## math

joe borrows \$4,000, the loan is for 18 months at 5% interest, whats the total amount due on the loan?

232. ## ap u.s history

how could the trusts purchase a senate seat?

233. ## to Nazgul

You have posted the same thing, time after time this morning, and you've received the same response from several people here: You need to post what YOU THINK the answers are, and then someone will be able to help you.

234. ## physics

an object is moving so that its kinetic energy is 83.8 J and the magnitude of its momentum is 27 kg m/s what is the speed of the object

235. ## chemistry

25.0 cm3 of an acidified solution containing Fe2+ ions was titrated against potassium manganate (VII) solution. 20.0cm3 of 0.050M potassium manganate (VII) was needed. Calculate the concentration of Fe2+ ions in the acidified solution.

236. ## math

if gunnar gives me a cookie, i will have twice as many cookies. if i give gunnar a cookie, we will have the same number of cookies. how many cookies do i have and how many cookies do gunnar have?

237. ## Chemistry

Reposting since it wasn't clear in the previous post S2O82-(aq) + 2I-(aq) ----------> 2SO42-(aq) + I2(aq) (I) Rate = k [S2O82-]x [I-]y Rate1 = k [S2O82-]x [I-]y Experiment data Experiment: 0.20M NaI,0.20M NaCl, 0.010M Na2S2O3,2% Starch,0.20M K2SO4, 0.20 M

238. ## Calculus AB

Consider the region trapped between the graphs of y=9-x^2 and y=11-3x. a) find the area of this region b) set up an integral which computes the volume of the solid of rotation obtained by rotating this region about the x-axis c) set up an integral which

239. ## Calculus AB

Consider the region bounded by the graphs of the equations x=y^2 and y=3x. Set up 2 integrals, one with respect to x and the other with respect to y, both of which compute the volume of the solid obtained by rotating this region about the x-axis and

240. ## English

I have a report to do on ways people tried to live forever. can anyone help me find info for this.

241. ## religion

what sociopolitical issues helped spur the Reformation?

242. ## Physics

An inflated balloon occupies a volume of two (2) liters. The balloon is tied with a string and weighted down with a heavy stone. What is its volume when it reaches the bottom of a pond 5.2 meters deep? Assume the atmospheric pressure is equal to 1

243. ## algebra

i need help on factoring. the equation is 4x^3 - 6x^2 + 10x - 15. how do you do this problem?

244. ## Physics

A one-liter container completely filled with mercury has a mass of 13.6 kg and weighs 133.3 N. What is the buoyant force on the container if the container is placed in water?

245. ## Physics

Suppose a certain type of deciduous tree releases 7500 leaves on average each fall. If the average mass of each leaf is 1.7 g and a 135 000 acre forest has 206 of these trees per acre, how many kilograms of leaves are dropped on the forest floor each fall?

246. ## Physics

A bus starts from rest at a bus stop and accelerates at a rate of 1.12 m/s^2 for 11.0s. It runs at constant speed for 80.0 s and slows at a rate 1.20 m/s^2 until it stops at the next bus stop. (a) What is the maximum speed attained. (b) Find the total

247. ## math

Please help me I'm stuck on this one: (5x4)-2=12+ I'll try (5x4) 20-2=12+ answer 18 or (5x4) 20-2=18 12+18=30 Really I don't think either is right

248. ## Algebra

I have a question I have this systems to solve 2x-y = 1 3x-3=y How do I go about solving this? Please give me some direction

249. ## history

the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980s.

250. ## math

In math class, students must randomly draw a card that contains an equation that they must graph on the board. If the cards contain the equations 2y = 4x + 2, x(x + 1) = 0, 2x + y = 0, x = 2y , x2 + 1 = 0, and y - 2x = 0, then what is the probability that

251. ## Physics

Describe how surface area and volume are related in solids? Give an example.

252. ## Physics

How is surface tension illustrated by water on a coin?

253. ## Physics

Explain how a drop of water bulging over the edge of a coin demonstrates surface tension.

254. ## Physics

Describe how you can determine the specific heat of an unknown metal whose mass is known.

255. ## Physics

Certain kinds of steel expand one part in 100,000 for each 1o C they increase in temperature. If a section of a bridge that has no expansion joints has a length of 1.5 km when the temperature is 50o C, what is its length when the temperature is 80o C?

256. ## algebra

A standard die is rolled 10 times, with the outcomes {2, 4, 1, 3, 4, 2, 5, 2, 5, 1} (in this order). You can conclude _____.

257. ## PHYSICS

A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of

258. ## physics

How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 2 106 m/s?

259. ## Math

My 7th grade daughter has the following math problem and gets zero help from her "language arts" teacher who gave out this problem: WANT X BE ________ CAREER Each letter in this question stands for a 1-digit #. No 2 letters may stand for the same #. Find

260. ## chemistry

calculate the volume in milliliters of 3.6 mol/L sodium nitrate solution that contains 325 mmol of sodium nitrate

261. ## English

The internal struggle of Macbeth's that forms a central conflict of this play is: A. his cowardliness and his wife's bravery B. his loyalty to Duncan and his ambition to be king. C. his hatred for Duncan and his desire to be kind. D. both A and B I'm

262. ## English

Help! In Ian Frazier's essay How to Operate the Shower Curtain, what problems are users likely to encounter in using the shower curtain?

What is the purpose of adding zinc chloride in the preparation of starch iodide paste? Please refer to the procedure below: - Starch Iodide Paste- Heat 100mL of water in a 250mL beaker to boiling, add a solution of 0.75g of potassium iodide in 5mL of

264. ## geometry

If a triangle side lengths of 12 cm, 35 cm, and 37 cm, what type of angle is it?

265. ## math

0.567km= meters

266. ## geometry

What is the area of the sector, in square units, determined by an arc with a measure 45° in a circle with radius 6? Round to the nearest tenth.

267. ## Grammar

What is simple predicate? These insects are strange and amazing creatures. Would it be are?

268. ## math

2.75 divided by 1000

269. ## statistics math

MEAN ƒÊ=10 & STANDARD DEVIATION ƒÐ=2. FIND THE PROBABILITIES: 9.4 Ú X Ú 10.6 i have 2 different answers but am checking the answer. thank you one is 0.6179 the other is 0.2358

270. ## physics

A bridge of lenght 79 m and mass 1.1 x10^5 kg is supported at each end. A truck fo mass 20900 kg is located 31 m from the left end. What is the force on the bridge at the left point of support?

271. ## Physics, error derivation

I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive

272. ## pre calc

in many parts of the coutry the average temp of a particular area may be modeled by a sin usoidal function. According to NCDC the average temp of k city is 92.2 in july and 32.2 in january assume that the period is 12 what is the best model for when july

273. ## grammar

Simple predicate? The history of these pests may surprise you. Would it be may?

274. ## Geometry

abcd is parallelogram. abde is a kite, ad= 18 cm and be = 10cm. find abcde thanks :)

275. ## geometry

Suppose line AB is parallel to line MN.Name all angles congruent to angle 8. In the figure at the right, x is parallel to y.List all angles that are congruent to angle 1. If the measure of angle 5 is 45 degrees, what are the measures of the other angles.

276. ## physics

A book weighing 29 N is placed on a table. if the support force back on the book from the table is 29 N, what is the net force?

277. ## Chemistry

I want to see if i got my answer correct for #1 but I need help on #2 1.A 150g aluminum pan containing 500g of water is heated on a stove for 5 minutes. The temperature goes from 23.5C to 48.9C. How much heat was absorbed. (s for Al is .900j/g C, s for H2O

278. ## grammar

What is simple predicate? Its legs make it one of the world's fastest insects. Would it be make?

279. ## Algebra

six people can paint a house in 3 days, how long it would take two people to paint it?

280. ## math

which algebraic expression represents tamara age if she is 7 years younger than her sister? Assume her sister's age is a. A. a-7 B. a+7 C. 7-a D. 7a I think the answer is c.

281. ## FIU

(1)You are preparing a budget for the month of January and are trying to estimate maintenance cost for the month. The maintenance cost is an overhead cost that is categorized as being mixed – that is it has both a fixed and a variable component. To

282. ## Income Tax

Filing an income tax return I need the steps, there are I think 6 steps, is there a site that shows the steps?

283. ## calculus

Consider the solid obtained by rotating the region bounded by the given curves about the x-axis. y = 9 - 9x^2 , y = 0 Find the volume V of this solid. Sketch the region, the solid, and a typical disk or washer. Any help or tips would be greatly