# Questions Asked onApril 21, 2014

1. ## statistics

A simple random sample of 40 items resulted in a sample mean of 25. The population standard deviation is 5. a. What is the standard error of the mean (to 2 decimals)? b. At 95% confidence, what is the margin of error (to 2 decimals)?

2. ## Chemistry

Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. A 3.279 g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen rich environment. The products

3. ## Computer Literacy

1. Which vendor did IBM select to create the operating system for the IBM PC? (A) Microsoft Macintosh DEC Dell 2. Which of the following components was a significant development featured in the Macintosh LISA computer? (A) C Prompt Disk Operating System

4. ## maths

laura rode her bike for 3/5/8 hours on Saturday and for 4/1/4 hours on sunday which is the best estimate of the time laura spent riding her bike on Saturday and sunday

5. ## Precalculus

The quarterback of a football team releases a pass at a height of 7 feet above the playing field, and the football is caught at a height of 4 feet, 30 yards directly downfield. The pass is released at an angle of 35 degrees with the horizontal. The

6. ## Physics

A playful college student tosses a water balloon out of his dorm window at a speed of 6.2 m/s at an angle of 10° above the horizontal. The dorm window is 11 m above ground level. 1)What is the maximum height above the ground of the balloon? 2) At what

7. ## math (check answer plz)

Carol has a collection of 100 stamps the graph below shows the percentage of stamps she has from each country how many more of Carols stamps are from france than from england? France: 24%, England:22%, Norway:29%, Italy:25%.

20. ## Inverse Trig

What is the general solution to y = arcsin 0?

22. ## English

Indicate where each aspect of an index card should be placed when researching. Match the letter that corresponds to one of the items below to the correct location (1, 2, 3, 4, or 5) on an index card A.) Page number B.) Title of card (aspect of subject) C.)

23. ## Inverse Trig

How do I simplify arcsin (sin 6 pi) given the interval 0 ≤ theta < 2pi

24. ## social studies

1. What was the Supreme Court's ruling on the Dred Scott case? (1 point)D red Scott should be considered free since he had lived in many states where slavery was banned. Dred Scott could be free if he paid a fee. Dred Scott was still a slave and not a

25. ## finance

On an income statement covering January 1 to June 30, _________ would not be included as income

26. ## statistics

For a t distribution with 16 degrees of freedom, find the area, or probability, in each region. a. To the right of 2.120. (Use 3 decimals.) b. To the left of 1.337. (Use 2 decimals.) c. To the left of -1.746. (Use 2 decimals.) d. To the right of 2.583.

1. In a standing wave, the medium at the tip of a loop is a) showing destructive interference b) not moving c) at the original amplitude of the wave d) showing constructive interference my answer: b 2. If a motorcycle is travelling toward an observer the

28. ## math

point p and q are respectively 24m north and 7m east of point r.what is the bearing of q and p to the nearest whole number

1. In a standing wave, the medium at the tip of a loop is a) showing destructive interference b) not moving c) at the original amplitude of the wave d) showing constructive interference my answer: b 2. If a motorcycle is travelling toward an observer the

30. ## Science

How many cell divisions would it take to produce at least 1,000 cells from one cell? (When one cell splits in half during cell division, the result is two new cells. Each of those cells can divide into two more and so on.) Answer (256?)

31. ## Stats

the typical saturday the oil change facility will perform 40 oil changes between 10 am and 12pm. treating this as a random sample, what mean oil change time would there be a 10% chance of being at or below? There is a 10% chance of being at or below a mean

32. ## geometry

Given points J (1,4), A (3,5), and R(2,1), graph JAR and its reflection image across each line `1) the x-axis 2) the y-axis 3) y = 2 I need help finding what to graph!

33. ## Evolution question part 2 - help!! THANK YOU!

Narwhals are aquatic mammals known for the giant tusk that protrudes from their upper lip. These mammals live in artic waters and can spend more than three hours at a time underwater at great depths that would crush other animals. The narwhal's ability to

34. ## Physics

A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of the plane if the pilot keeps the plane pointed [N].

35. ## statistics

If an instrument requires some professional judgments in scoring, then the manual should also include information on a. Interrater RELIABILITY b. Corrections of the reliability coefficients using the Spearman-Brown formula c, Both KR 20s and KR 21s d. Test

36. ## Physics

An airplane needs to drop a package at a specified drop site. The airplane cruises 5.00 x 10^3 meters above the ground at 350.0 km/hr. Assuming that there is no wind blowing and that the plane is flying in a direction that will take it exactly over the

37. ## English Help Please!!! Check!!

Memo Edit Today, Rite Properties needs to send a memo to the residents of The Plaza, an apartment complex they own. Review the memo thoroughly, then edit it for writing style (cohesion, concision, clarity, diction, and variety) AND professional tone and

38. ## physics

Two speakers are both emitting sounds, the first with an intensity level of 1 x 10^{-11} \frac{W}{m^2} and the second with an intensity of 1 x 10^{-8} \frac{W}{m^2}. What is the db level of the first? \beta = What is the difference in the decibel (db)

39. ## PHYSICS

A point source of a wave emits 195 watts. What is the intensity at a distance of 4.56 meters? I =

40. ## physics

Two speakers emit sounds, the one with an intensity of 3.19 x 10^{7} \frac{W}{m^2} and the other 8.64 x 10^{8} \frac{W}{m^2}. What is the difference in their intensity level? \Delta \beta =

41. ## Probability

The random variables X1,..,Xn are independent Poisson random variables with a common parameter Lambda . Find the maximum likelihood estimate of Lambda based on observed values x1,...,xn.

42. ## Pre Chem

A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure?

43. ## Ethics in Criminal Justice

Which of the following might help us develop open-mindedness and the virtue of tolerance? A. Recognizing that people have free will. B. Recognizing that moral norms can and often do vary by time and place. C. Developing our own sense of egoism. D. All of

44. ## Science

Plant Cell Analogy Cell Membrane: Security Nucleus: Boss Mitochondria: Food court Cytoplasm: Chromosomes: Vacuole: Water Ribosomes: Food Cell wall: Endoplasmic Reticulum: Chloroplasts: Golgi Appartuas: Packer What could the others be?

45. ## chemistry

I want to know if someone could let me know if I have written my balanced equations correct for the following questions. Write a balanced equation for the reaction of zinc with sulfuric acid. Zn + H2SO4 >>> Zn(S04) +H2 Write a balanced equation for the

46. ## parallel structures

how can i correct this sentece to parallel structute? When the movie Star Wars premiered in 1977, it was both surprising and a revolution in its special effects.

47. ## calculus help

Suppose that f'(x)= (2x^2-5x-12)/(3x^2-7x+2) and that f(x) is continuous for all real numbers x. a) Do a sign diagram to list the values of x where f(x) has local maximums and local minimums. In addition, list the intervals where f(x) is increasing and

48. ## Algebra

Ramona divided his 35,000 inheritance between two investments, one paying 9% and the other 12% simple interest. is total annual income on the interest alone was 3,000. How much did he invest at 9%?

49. ## social studies 1 question!??

10. ". . . I need not tell the brave survivors of so many hardfought battles, who have remained steadfast to the last, that I have consented to the result from no distrust of them. But, feeling that valor and devotion could accomplish nothing that could

50. ## introduction to programming

Write a program to find the sum of the series: 1/12+1/22+1/32+…..1/n2.

51. ## Calc

A particle is moving along the curve y= 4 sqrt{2 x + 2}. As the particle passes through the point (1, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

52. ## statistics

The average cost per night of a hotel room in New York City is $273 (SmartMoney, March 2009). Assume this estimate is based on a sample of 45 hotels and that the sample standard deviation is$65. a. With 95% confidence, what is the margin of error (to 2

53. ## statistics

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 10 (to the nearest whole number)? Assume that the population standard deviation is 40.

54. ## Evolution question - HELP!

Niles Eldredge found evidence in trilobite fossils of a pattern of evolution in which short periods of large change are mixed in with longer periods of little or no change. This pattern is called_____??

55. ## physics

In the Millikan experiemnt, what error might result if only a few oil drops were used, or if all the oil drops contained an even number of charges.

56. ## physics

A spring has a length of 0.248 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 2.42 kg mass hangs from it. (a) What is the force constant of the spring? (b) What is the unloaded length of the spring?

57. ## Math

Which situation could you graph without connecting the points? the height of a hot-air balloon as it climbs the amount of electricity used by a refrigerator over time

58. ## math

Mark and Juanita want to tile their kitchen floor. If the kitchen floor is shaped like a rectangle and measures 11 feet × 14 feet, how many square tiles will they need to cover the floor is each square tile measures 4 inches × 4 inches?

59. ## algebra

What is 84 feet per hour converted into inches per minute?

60. ## math

the first three terms of a GP are the first, fourth and tenth terms of an AP. given that the first term is 6 and that all the terms of a GP are different, find the common ratio.

61. ## Computer Literacy

2. Which of the following components was a significant development featured in the Macintosh LISA computer? (C) C Prompt Disk Operating System Graphical User Interface) Memory 4. Which is NOT a function associated with a motherboard? (D) Expansion slot

62. ## Math

What is the order of the set a={-1,20,3,17,5}

63. ## Ethics in Criminal Justice

Which of the following might help us develop open-mindedness and the virtue of tolerance? A. Recognizing that people have free will. B. Recognizing that moral norms can and often do vary by time and place. C. Developing our own sense of egoism. D. All of

64. ## Precalculus

Find the exact value of: Cos(inverse tan 4/3 + inverse cos 5/13)

A bone fragment has lost 75% of its original carbon-14. What is the age of the bone fragment? My answer is about 11 000 years but I don't know if its right

66. ## physics

A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 1.8 kg, and its initial speed is 3.8 m/s. How much does the block's temperature increase, if it absorbs 69% of its initial kinetic energy as

67. ## Math

Identify the solution of the system of equations 9x+2y=8 8x-2y=8

68. ## probability

Find the probability of seeing at most 5 dots, but also an odd number of dots when 2 fair dice are rolled.

69. ## physics

A 0.250-kg aluminum bowl holding 0.800 kg of soup at 27.0°C is placed in a freezer. What is the final temperature if 430 kJ of energy is transferred from the bowl and soup? Assume the soup has the same thermal properties as that of water, the specific

70. ## math

Mark and Juanita want to tile their kitchen floor. If the kitchen floor is shaped like a rectangle and measures 11 feet × 14 feet, how many square tiles will they need to cover the floor is each square tile measures 4 inches × 4 inches?

71. ## english

EXPLAIN WHAT YOU WANT TO BE WHEN YOU GROW UP ? THEN WRITE A LOVE SONG ABOUT SOMEONE YOU HAVE A CRUSH ON PLEASE HELP ME I DO NOT UNDERSTAND THIS I DO NOT KNOW WHAT DO TO NOW

72. ## math

If a person standing 5 feet tall casts a shadow 12 feet long, then how long is a tree's shadow if a tree stands 17.5 feet tall?

73. ## physics

A bullet of mass 100g is fired at avelocity 100m/s into a wooden block of mass 900g.If the bullet gets embeded into the block,then what would be the velocity of the system?

74. ## math

What is the 40th digit in the pattern 0.142857?

75. ## English

Why traditional african marriage is an advantage for men only not, women

76. ## Math

What does "Larger number exceeds three times the smaller number by four" mean?

77. ## Economics

1) Please provide an explanation on the saying, "Households are demanders but they are also suppliers.” 2)What factors affect an individual’s standard of living?

78. ## Social Studies (History)

Why did Germany, Japan, Italy, and Soviet Union all move to dictatorship?

79. ## Calc

When a certain type of ball falls froma height of h onto a hard level surface, it bounce straight back up to a height of kh, where k is constant with 0

80. ## Math

The minute hand of a clock is 6 inches long and moves from 3 o clock to 5 o clock. how far does the tip of the minute hand move. Express your answer round to two decimal places. Can you solve this?

81. ## physics

A sound wave has a frequency of 1640 Hz. The air temperature is 46 degress F. What is the speed? v = What is the wavelenght of the sound? lambda =

82. ## Inverse Trig

Using -pi/2 ≤ y ≤ pi/2, what are the following solutions? y=arcsin root3/2 y=arcsin 1/2

83. ## GEOGRAPHY 9

6) This was issued in 1635, forbidding anyone to leave or enter Japan. a. Tang Shogunate b. Edit of Milan c. Edit of Nantes d. Edit of Japan my answer --- d am I correct?

84. ## Social Studies (History)

What were three effects of World War 2

85. ## physics

Use the diagram below. Click to view larger size. Taking right to be positive, the speaker is moving at a velocity of 27 \frac{m}{s} while emitting a sound of frequency 1094 Hz. If the temperature of the air is ^oF, what will be the frequency that you

86. ## physics

A stationary speaker is emitting a sound of frequency 1330 Hz. The air has a temperature of ^oF. Taking right to be positive, a person is moving toward the source (to the left) at 8.2 \frac{m}{s}. The person will hear a frequency of ... f =

87. ## Math

The quarterback of a football team releases a pass at a heights of 7 feet above the playing field, and the football is caught at a height of 4 feet, 30 yards directly downfield. The pass is released at an angle of 35 degrees with the horizontal. The

88. ## physics

A vibrating stretched string has length 139 cm, mass 38 grams and is under a tension of 38 newtons. What is the frequency of its 5th overtone? f_{6} = If the source of the wave is an open organ pipe of the same length as the wire and the temperature of the

89. ## Probability

Let Sn be the number of successes in n independent Bernoulli trials, where the probability of success for each trial is 1/2 . Provide a numerical value, to a precision of 3 decimal places, for each of the following limits. 1. lim P (n/2 - 20 < Sn < n/2 +

90. ## Physics

A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s2, a) how long does it take to catch the speeder? b) how far would the police car have to go before it catches the speeder? c) what would

91. ## Economics

1) Please provide an explanation on the saying, "Households are demanders but they are also suppliers.” 2)What factors affect an individual’s standard of living?

92. ## math

the equation is y=2exponent(x)+2 determine the input value if y=34

14, 8, -16, 32... Arithmatic. 64, 128, 256 geometric, -64, 128, -256 geometric, -48, 64, -80*** the sequence is neither geometric nor arithmatic 81, 27, 9, 3.. aruthmatic , 0,-3,-6 geometric, 0,-3,-6 geometric, 1, 1/3, 1/9

I would like to know if my answer is correct. Thanks in advanced! A person with their head sideways in the water sees a beaver slap its tail on the lake surface 1.2 km away. What is the time difference between the sound heard in the ear listening in the

95. ## physics

a steel aircraft carrier is 370 meter long when moving through the icy north atlantic at a temperature of 2.0 degrees celsius. by how much the carrier lengthen when it is travelling in the warm mediterranean sea at a temperature of 21 degrees celsius?

96. ## math

What is the mean of the following set? 134, 298, 328, 95, 119

97. ## maths

displacement (s) of a spring is given as s=ae^(-kt)sin2pi*f*t where t is time. determine velocity and acceleration affter 2seconds if: a=3, k=0.75 and f=20. i think im supposed to integrate but cant think how to do this one.

98. ## Social Studies (History)

How can Fred Korematsu be compared to Homer Plessy?

99. ## math

input:0;1;2;3 outpu2:4;2;0;-2 wht is the formula#stressed:|

100. ## English

Tom's school will have a parade for its anniversary celebration. ----------------- Is this sentence grammatical? Thank you.

101. ## Probability

For any given flight, an airline tries to sell as many tickets as possible. Suppose that on average, 10% of ticket holders fail to show up, all independent of one another. Knowing this, an airline will sell more tickets than there are seats available

102. ## math

maths (integ) voltage v=25sin50πt is applied on a circuit. using integration, find mean and RMS over range t=0 to 10ms . i got it to 25/2πt^2 cos(2π/9)+c but im not sure that im going the righ way.

103. ## Probability

Let X be a continuous random variable. We know that it takes values between 0 and 3 , but we do not know its distribution or its mean and variance. We are interested in estimating the mean of X, which we denote by h . We will use as a conservative value

104. ## trigonometry

3 sin theta = 1.5 when 0 is less than or equal to theta is less than or equal to 4 radians

105. ## Math question

Identify the sequence as arithmetic. geometric, or neither.. explain your answer 1.6, 0.8, 0.4, 0.2

106. ## Math

The population of some countries has a relative growth rate of 2.75% per year. At this rate, how many years (to the nearest tenth of a year) will it take the population to double?

107. ## Math

You want to purchase an automobile for $21,600. The dealer offers you 0% financing for 48 months or a$3,000 rebate. You can obtain 4.8% financing for 48 months at the local bank. Which option should you choose and why? (you would use the banks option to

108. ## alg.

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola with the given equation. y = 8x2 + 48x − 3 vertex (x, y) = _____________ axis of symmetry _____________

109. ## GRAPHING HELP

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola given by the equation. x = − 1/3^2+4 vertex (x, y) = axis of symmetry Sketch the graph.

110. ## algebra

Find the equation of the circle for which a diameter has endpoints P1(-1, 4) and P2(-5, 2).

111. ## HISTORY

With respect to Australia's aboriginal peoples, animistic religious beliefs are characterized by _______ worship.

118. ## Math

In a sliding scale of 1 ticket cost $1.00 and 6 tickets cost$5.00 and 20 tickets cost $10.00, how many tickets should you get for$100.00?

119. ## music

Smooth, stepwise movement within a melodic phrase, subphrase, or statement is known as _______ motion

*please help ily*. a fishing pole, 2m long, is pivoted at 50cm from one end. the other end has a line with a 4 kg fish on it. what is the effort force required to land the fish?

121. ## Chemistry

using a coffee calorimeter, it is found that when an ice cube weighing 24.6g melts, it absorbs 8.19kJ of heat. calculate delta H for the phase change represented by the thermochemical equation: H2O(s) ->H2O(l)

122. ## College Algebra

Find an exponential growth model n(t) = Cat for the population t years since the bullfrogs were put into the pond with coordinates (0,148) (2,333)

138. ## statistics

Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,000 and$45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. What

139. ## calc

The altitude of a triangle is increasing at a rate of 1.000 centimeters/minute while the area of the triangle is increasing at a rate of 3.000 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 11.500

140. ## Math

A tree is 18 feet tall and casts a shadow that is 22 feet long. How fat is it from the end of the shadow to the top of the tree

141. ## social studies (check answers)

1.B 2.D 3.B 4.C 5.D 11.What contribution did Simón Bolivar and José de San Martín make to the history of the region? A. They served as prominent criollo leaders. B. They led the revolutions for independence. C. They instituted the first republican

142. ## chemistry

How much energy is needed to melt 25.4 grams od I2?

143. ## Math

Rational Equation, how do you work it out I need to check my work. x 1 x — - — = — 2 3 4 I got 4 — 3

144. ## mathematics

find the mean and RMS of v=25sin50πt over the range t=0 to t=20ms using integration. i have integrated to: v=-cos(50πt)/2π+c but i don't know how to get the mean and rms.

145. ## science

If and iron block had a lenght of 2 cm, a width of 3 cm, and a height of 1 cm and a mass of 33 g between what two liquids would it float?

146. ## MATH

ABOUT,THE GHANA NATIONAL WEEKLY LOTTO,THE LAST TWO WEEKS RESULTS ARE

147. ## math

The rule of 78s requires the larger amount of the interest be paid with the early payments.

148. ## Math

A student purchased a box of green tea mints. The nutrition label on the box stated that a serving of 3 mints contains a total of 10 calories. A) Graph the function C, where C(x) represents the number of calories in x mints. B)Write an equation that

149. ## ALG

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola with the given equation. y = 8x^2 + 48x − 3 vertex (x, y) = axis of symmetry ________

150. ## calc

If y^3 = 16x^2 Determine dx/dt When x= 4 and dy/dt= -1

151. ## ALG. REPOST TYPO

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola given by the equation. x = −1/3y^2+4 vertex (x, y) = axis of symmetry Sketch the graph.

152. ## Language Arts

Which of the following would most likely connect with the speaker of "Growing Pains"? A) a teen whose parents are going through a difficult divorce B) a teen who has let down one of her best friends C) a teen whose mother is often too busy to spend time

153. ## Math

What is S[1] for 6 – 24 + 96 – 384 + ...?

154. ## 7 th Math

During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula, M = 176 – 0.8A, where M is the maximum heart rate and A is the person’s age. Solve the formula for A. At what age would you have a recommended maximum

155. ## physics

why salt mixed in water before keeping egg and boil it?

158. ## Law

1. What legislation provides the legal basis for today’s employment practices? A. Affirmative Action B. The Bill of Rights C. The Civil Rights Act D. The Equal Opportunity Act is it C

159. ## Math

Rational Equation solve: x/2 - 1/3 = x/4 I got 4/3

160. ## math

The box shown does not have a top. What is the surface area of the box if its length measures 12 cm, its width is 9 cm, and it has a height of 15 cm?

161. ## math

What number can be expressed as 2cubed × 3 × 5squared?

162. ## social st

The need for budget adjustments is indicated when

163. ## math

Based on estimates, the town of wayne has a population of 54,000 people. Wayne has an area of approximately 25 square miles. What is the population density of wayne?

164. ## maths

luke rode his bicycle 2/5 of a mile from his house to the library. He then rode 1/2 of a mile from the library to the mall. Sketch a visual model to find the total distance that luke rode

165. ## URGENT Physics help

Positively charged Object A is brought close to neutral Object B but does not touch it. The two objects begin to attract each other. What is this process called? (Points : 1) grounding charge polarization conduction repulsion 4. How many coulombs could be

166. ## history

if a positive factor for harvesting trees is encouraging local industry, a negative could be A. loss of habitat B. mining accidents C. unemployment D. water pollution I think A

167. ## physics

How fast does water flow from a hole at the bottom of a very wide, 7.9m deep storage tank filled with water? Ignore viscosity

168. ## Math (Number Theory)

the following two lines indicate another way to derive the formula for the sum of the first n integers by rearranging the terms in the sum. Fill in the details. 1+2+3+...+n=(1+n)+(2+(n-1))+(3+(n-2))+... =(1+n)+(1+n)+(1+n)+...

169. ## math

if hallie ran 1.2 miles on the school track and that is 5/8nof the distance of the track how long is the track?

Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined point charges? (Points : 1) The field lines from the positive charge point toward the negative charge. The field lines from the

171. ## math

Is it reasonable to state that the ratio of 8 male students to 16 female students is the same as the the ratio of 8 male students to 24 students?explain.

172. ## Math

Identify the solution of the system of equations -3x-4y=2 8y=6x-4

173. ## maths

howto write a problem that can be solved with the equation 5 divide 3 = x

174. ## math

mr.musial traveled by car to a destination that is 1150 miles from hishome. it took him 3 days to drive to this destination. if mr.musial traveled the same distance each day, about how many miles did he travel each day? use estimation

175. ## math

If your _________, your net worth on the balance sheet would have increased from one period to the next

176. ## Physics

The bulk modulus of water is B = 2.2 x 10^9 N/m2. What change in pressure Delta P (in atmospheres) is required to keep water from expanding when it is heated from 12.4 °C to 31.1 °C? I know that the equation for pressure is Delta P = Force / Area but I

178. ## math

If a person standing 5 feet tall casts a shadow 12 feet long, then how long is a tree's shadow if a tree stands 17.5 feet tall?

179. ## English

What would be 3 good guide questions for The Bermuda Triangle? 1. Where do people disappear in the triangle? 2. 3.

180. ## statistics

Using the 95% level of confidence, what is the confidence interval for the proportion of households represented at a town meeting

181. ## Chemistry

Use intermolecular forces to explain why alkanes with 1-4 C are gases; 5-16 C are liquids; and greater than 16 C is solid

182. ## math

What is the 40th digit in the pattern 0.142857?

183. ## math

Point R located at (-3,4) and the point is trandlated +4 units horizontally. Where will the translated point be located?

184. ## math

use inverse operation to solve b-16=4

185. ## math

use inverse operation to solve h/5 = 500

186. ## math

If 3x + 7 = 34, what is the value of 5x?

187. ## social studies

1. The admission of Missouri as a slave state was controversial in the Senate because the Senate was pro-slavery. it would create sectionalism. it would upset the balance.*** the Senate was anti-slavery. 2. The main topic of the Lincoln-Douglas debates was

188. ## Physics

An airplane needs to fly due south. The plane can fly at a speed of 720.0 km/hr in still air. If there is a wind blowing to the northeast at 70.0 km/hr, in what direction should the plane fly to maintain its heading of due south? How long will it take to

189. ## math

Identify the solution of the system of equations 3x+2y=4 5x-4y=3

190. ## Physics

A catapult launches its payload at a 50.0degrees angle and the payload leaves the catapult 3.00 meters off the ground. If the payload travels 300.0 meters in the horizontal direction, what was the launch speed? At what speed does the payload hit the

200. ## Astronomy

Rank the following hypothetical planets -- all of which have the same total mass and same radius -- from lowest moment of inertia to highest moment of inertia: 1) A uniform sphere of mixed up rock and iron 2) A hollow sphere 3) A rocky planet with an iron

201. ## Language Arts

The measure of how much we understood and learned in a college course is referred to as:

202. ## Astronomy

Rain was once common on Mars. Probably true Maybe/unclear Probably false

203. ## Astronomy

The northern plains of Mars have many characteristics that you would expect from their being an ancient ocean floor. Probably true Maybe Probably false

204. ## Astronomy

Sometimes a crater from the Noachian period can be found inside of a crater from the Amazonian period. Probably true Maybe Probably false.

205. ## Astronomy

In the past few million years of Mars the main source of climate variation has been the slow escape of the atmosphere. Probably true Maybe Probably false

206. ## math

b - 16 > 4 true or false

207. ## 6th grade Lang Arts

Can you explain why the comma used in sentence 1 is not correct as compared to the comma used in sentence 2? (from homework) 1. The stadium, that my favorite team plays in, seats over 81,000 people. 2. My father, who is an excellent reader, finished a 500

208. ## "Romeo and Juliet" Summary Evaluation (Writeacher)

You probably haven't watch the 2013 version of Romeo and Juliet, but I would like your opinions about the the writing aspect of my summary. "Directed by Carlo Carlei, the latest movie adaptation of Shakespeare's Romeo & Juliet (2013) begins with a scene of

209. ## Social Studies

2. Pretend you're a follower of Gandhi is India under British rule. Express your desire for home rule. (Your writing must be two paragraphs.) What could I include?

210. ## Science

Plant Cell Analogy Cell Membrane: Security Nucleus: Boss Mitochondira: Food court Cytoplasm: Chromosomes: Vacuole: Water Ribosomes: Food Cell wall: Endoplasmic Reticulum: Chloroplasts: Golgi Appartuas: Packer What could the others be?

211. ## english

i have an assignment and i have already finished it. which is on writing a film review and there are 5 paragraphs to it so i already wrote the 4 paras but in the last paragraph it says you have to write two sub points and 2 descriptive evidences on how

212. ## Grammar

Since I am supposed to write in MLA format, must I underline or italicize a movie title as a title for my essay?

213. ## social studies (check answers)--Mrs.Sue

Im a little rusty on these but please bare with me and check them thanks so much 1.B 2.B 3.C 4.A 5.D Wealth disparity in Brazil results mostly from A. unequal land distribution. B. insufficient arable land. C. lack of oil and mineral resources. D. emphasis

214. ## Moms day question

Hi so this isn't school, but my mom and dad looks at my history, so i cannot Google this question. I am 14, and I need cheap easy mothers day ideas... Thanks, and if y'all don't wanna answer, ya don't have to.

215. ## writers craft

this question is on writing a film review. i have to write a weakness in cinematography/story element from the movie finding forrester?

216. ## Precalculus

Sin - cos = - radical 2 I don't understand this. It wants you to make the right side equal to zero and solve

217. ## Precalculus

Show: sin(a-b) sin(a+b) = sin^2 a - sin^2 b

218. ## Biology

undigested food enters the intestine called the ? chyme is this answers right

219. ## Chemistry_DRBob222! Thanks

Thank you very much indeed for your attention and regard to my solution. Bye

A radioactive isotope source has a mass of 120ug. If the isotope had a half life of 20s, what would be the mass if the isotope after 2 mins?

221. ## english

What are the characteristics of an effective television newscaster? Explain.