# Questions Asked onDecember 12, 2013

1. ## Physics

Problem 2- A 350 kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop shown in the figure. a) How fast is the roller coaster moving at point B? b) How hard does it press against the track at point B?

2. ## Physics... HELP

A toy car runs off the edge of a table that is 1.225 meters high. If the car lands 0.400 meters from of the table, a. How long does it take for the car to fall? b. What is the horizontal velocity of the car?

3. ## Social studies

12. Which of these responsibilities is the job of national government, but not state or local government A. collecting taxes B. repairing roads and highways C. maintaining a military D. running public schools 14. Formal membership in a nation- state is

4. ## Physics

A 13g bullet traveling 330 m/s penetrates a 2.0 kg Block of wood and emerges going 270 m/s . If the block is stationary on a frictionless surface when hit how fast does it move after the bullet emerges?

5. ## Science-bobpursley/Ms.Sue

1. A trilobite is considered an index fossil because this organism existed during a limited period in Earth's history. That means that any fossil located in a layer of rock beneath a layer containing trilobite fossils is ____________ than a trilobite. 2.

6. ## MATH

Need help on the question below. A cat has a litter of 5 kittens. Which simulation could be used to determine the probability that exactly 3 kittens will be female? a. tossing 5 coins b. spinning a spinner with 5 equal parts c. using a random integers 1 to

7. ## science

why does buying food that is grown in your local area help prevent loss of biodiversity?

8. ## physics

A dart player throws a dart horizontally at a speed of of 12.4 m/s. The dart hits the board 0.32 meters below the height from which it was thrown. How far away is the player from the board?

9. ## trig

Juana and Diego Gonzales, ages six and four respectively, own a strong and stubborn puppy named Corporal. It is so hard to take Corporal for a walk that they devise a scheme to use two leashes. If Juana pulls with a force of 23 lbs at an angle of 18° and

10. ## Social studies

1. Into which political unit is the world primarily organized A. International Organizations B. Limited Governments C. Regional Organizations D. Nation-States 3. One main purpose of government is to A. maintain order and security for citizens. B. hold

11. ## physics

When the net force that acts on a hockey puck is 12 N, the puck accelerates at a rate of 48 m/s2. Determine the mass of the puck.

12. ## Computer Science

Answer the following question without running the code. The procedure isMyNumber is used to hide a secret number (integer). It takes an integer x as a parameter and compares it to the secret number. It returns: -1 if the parameter x is less than the secret

13. ## science

What activities would contribute the most global warming?

14. ## math - trig

The tallest television transmitting tower in the world is in North Dakota, and it is 2059 feet tall. If you are on level ground exactly 5280 feet (one mile) from the base of the tower, what is your angle of elevation looking up at the top of the tower?

15. ## physics HELP!

A 4.0 g coin sliding to the right at 26.0 cm/s makes an elastic head-on collision with a 12.0 g coin that is initially at rest. After the collision, the 4.0 g coin moves to the left at 13 cm/s. (a) Find the final velocity of the other coin. cm/s (b) Find

16. ## Social studies

8. Which of these best shows a conflict between U.S. political ideals and political reality? A. Americans believe in religious freedom, but most people in the United States are Christians. B. Americans believe in equality, but women usually make less money

17. ## math - trig

A submersible traveling at a depth of 250 feet dives at an angle of 15º with respect to a line parallel to the water’s surface. It travels a horizontal distance of 1500 feet during the dive. What is the depth of the submersible after the dive?

18. ## Sentence Agreement Errors

What agreement error would this sentence be? One of the options concerning his future surgeries were discussed with him. Verb tense agreement error, subject/verb agreement error, pronoun agreement error, modifier placement error or parallel structure error

19. ## programming

Create the logic for a program that continuously prompts the user for a number of dollars until the user enters 0. Pass each entered amount to a conversion method that displays a breakdown of the passed amount into the fewest bill; in other words, the

20. ## physics- multiple choice

1. Two forces are applied to a box on a frictionless surface. One force is 40 N [S]. The second force is 70 N [N30ºW]. What is the overall net force? a) 40.6 N [S59.5ºE] b) 110 N c) 40.6 N [N59.5ºW] d) 40.6 N [S30.5ºW] 2. When drawing free body

21. ## college chemistry

If 100.0 mL of 0.0025 M Na2SO4 (aq)is saturated with CaSO4 how many grams of CaSO4 would be present in the solution? [Hint: Does the usual simplifying assumption hold?]

22. ## science

Use of which of the following does not contribute carbon dioxide to the environment? refrigerator charcoal grill computer bicycle

23. ## math

What integer would represent "twenty-two hundred feet above sea level"?

24. ## SS

Tropical storms often hit Japan during the ________. summer winter spring fall Summer?

25. ## science

What determines the carrying capacity of a particular population by an ecosystem? A.keystone species B.pioneer species C.limiting factors D.renewable resources

26. ## physics

A 0.20 kg baseball moving at +25.20 m/s is slowed to a stop by a catcher who exerts a constant force of -387 N. A)How long does it take this force to stop the ball? B)How far does the ball travel before stopping?

27. ## PHYSICS HELP!

An 88.5 kg fullback moving east with a speed of 5.5 m/s is tackled by a 94.0 kg opponent running west at 2.90 m/s, and the collision is perfectly inelastic. (a) Calculate the velocity of the players just after the tackle. m/s (b) Calculate the decrease in

28. ## English

Four score and seven years ago, our forefathers brought forth upon this continent a new nation conceived in (liberty) and dedicated to the proposition all men are created equal.

29. ## Math

Altogether,Renee walks a combined "2 4/5" miles to and from the train each day.How long is the walk to the train?

30. ## pHYSICS HELP!

A tennis player places a 44 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.064 kg tennis ball horizontally with a velocity of 35.2 m/s toward the north. What is the final velocity of the machine?

31. ## Physics, HELP

AN auto, moving too fast on a horizontal stretch of mountain road, slides off the road, falling into deep snow 43.9 meters below the road and 87.7 meters beyond the edge of the road. a. How long did the auto take to fall? b. How fast was it going when it

32. ## Physics

Problem 3- A 12 kg stone slides down a snow-covered hill, leaving point A with a speed of 10 m/s . There is no friction on the hill between points A and B, but there is friction on the level ground at the bottom of the hill, between B and the wall. After

33. ## physics. HELP

Phil jumps off a high-diving platform with a horizontal velocity if 2.8 m/s and lands in the water 2.6 seconds later. a. How high is the platform b. How far out from where he jumped does he land?

34. ## social studies

Who was the presiding officer at the Constitutional Convention?

35. ## physics

an auto, moving too fast on a horizontal stretch of mountain road, slides off the road, falling into deep snow 43.9 meters below the road and 87.7 meters beyond the edge of the road. a. How long did the auto take to fall? b. How fast was it going when it

36. ## Math (pre calculus)

The population of a certain town grows from 10,000 in 1982 to 35,000 in 1995. At this rate, in what year will the population reach 300,000? Tip* Population growth formula: P = P(subzero)multiplied by e^(k)(t)

37. ## Math

A clothing retailer purchased a line of fall leather coats which were priced to sell at \$600 each. This price reflected a markup of 45% on the selling price. At the end of the season the retailer had three coats left, which were marked down to 25% and

38. ## Math - Trigonometry

An observer on the ground at point A watches a rocket ascend. The observer is 1200 feet from the launch point B. As the rocket rises, the distance d from the observer to the rocket increases. a. Express the measure of angle A in terms of d. b. Find the

39. ## College Algebra

Use a system of equations to solve the problem. A rectangular picture frame has a perimeter of 2,200 centimeters and a width that is 300 centimeters less than its length. Find the area of the picture. _____ cm2

40. ## Precalculus

A plane flies 30 mi on a bearing of 200 degrees and then turns and flies 40 mi on a bearing of 10 degrees. Find the resultant displacement vector as a distance and bearing.

41. ## chemistry

An excess of aqueous AgNo3 reacts with 41 mL of 5 M K2CrO4(aq) to form a precipitate. What is the precipitate?

42. ## English

What type of clause or phrase is italicized in the sentence below? (Jumping across the ditch), the fire threatened our house.

43. ## MATH Albera

Sales at a certain department store follow the model where y is the total sales in thousands of dollars and x is the number of years after 2001. What was the first year that sales fell below \$50,000?

44. ## World Geography

a What are the major groups that blended to form the culture of this region? b What are some major sources of income in the economies of Central America and the Caribbean? c What forms of music have evolved in the region?

45. ## Statistics

True or False As sample size increases, the value of the standard error also increases.

46. ## Physics

An infinitely long wire carries a current I=100A. Below the wire a rod of length L=10cm is forced to move at a constant speed v=5m/s along horizontal conducting rails. The rod and rails form a conducting loop. The rod has resistance of R=0.4ohms. The rails

47. ## math

the population of a town is declining at a rate of 4.1% per year. the current population is 25000. 1)what will the population be in 7 years. 2) how long will it take the population to reach 15000?

48. ## statistic

Which of the following behave exponentially over time? Select all that apply. (6 points) finances population area pricing volume bacteria mass

49. ## Physics

A Venturi flow meter is used to measure the the flow velocity of a water main. The water main has a diameter of 30.0 cm, and the constriction has a diameter of 10.0 cm. The two vertical pipes are open at the top, and the difference in water level between

50. ## math - trig

The airport meteorologists keep an eye on the weather to ensure the safety of the flights. One thing they watch is the cloud ceiling. The cloud ceiling is the lowest altitude at which solid cloud is visible. If the cloud ceiling is too low the planes are

51. ## physics

A missile is fired horizontally with an initial velocity of 300 m/s from the top of a cliff 200.0 meters high. a. How long does it take the missile to reach the bottom the cliff? b. How far from the base of the cliff does the missile strike the ground?

52. ## statistic

Which set of points can be modeled without a power model? (2 points) {(2.2, 4.33), (3.5, 6.641), (4.8, 10.184)} {(1.4, 0.133), (2, 0.21), (2.6, 0.333)} {(1.1, 17.155), (1.7, 14.941), (2.3, 13.013)} {(1.4, 5.192), (1.8,6.104), (2.2, 7.016)}

53. ## SS

Which of the following caused a severe economic crisis in Japan during the 1990s? Taxes were raised too high. Bad bank practices caused a recession.** Too many workers went on strike. Trade embargos increased. Which of the following is a cultural exchange

54. ## physics

An airplane traveling 1001 meters above the ocean at 35 m/s is to drop a box of supplies to shipwrecked victims below. a. How many seconds before being directly overhead should the box be dropped?

55. ## statistic

The data (1,5), (3,16), (5,35), (7,67), (9,110) could be modeled as a linear relationship if

56. ## statistic

With an exponential transformation, how does the data set (x, y) change? (2 points) (log x, y) (x, log y) (log x, log y) cannot be determined without a data set

57. ## Physics-science

what is the heat required in kilo calories to covert 2kg of ice at 0 c completely into stream at 100c

58. ## Math help,plz :(

So I'm drawing a scale drawing of A room (Yes, I know what a Scale drawing is) and I don't know how to do it adding proportions.... and what does it mean to Use dimensions to scale the room? Care to explain?

59. ## physics

A missile is fired horizontally with an initial velocity of 300 m/s from the top of a cliff 200.0 meters high. a. How long does it take the missile to reach the bottom the cliff? b. How far from the base of the cliff does the missile strike the ground?

60. ## Science

Which of the following ets of terms could be used in a deseription of the peripheral nervous system?

I need help writing this: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph

62. ## Math - Trig

From the foot of a building I have to look upwards at an angle of 22° to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50° to look at the top of the tree. a. How tall

63. ## Precalculus

I know I posted this before,but I did not learn it your way .....instead I drew a picture and use the law of cosines....is there a way you can show me the work using law of cosines?? A plane flies 30 mi on a bearing of 200 degrees and then turns and flies

64. ## calculus

use a sign chart to solve inequality. Express answers in interval notation. x^2+6

65. ## Physics

Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a current Io=200A going into the page. A third thin, infinitely long wire with mass per unit length λ=5g/m carries current I going out of the page. What

66. ## algerbra

3x-2y=8 2x=2y=22 How i solve with substitution?

67. ## Math Quiz

Math Quiz please help fast Write the following ratio in simplest form: 32 min:36 min (1 point) 8:9 8:36 32:9 128:144 2. Marie saved \$51. On Wednesday, she spent \$8 of her savings. What ratio represents the portion of her total savings that she still has

68. ## Math

Carolyn and Kim are selling lemonade this summer. It costs 10 cents to make each cup of lemonade. They are going to sell each cup of lemonade for 25 cents. What is the total cost to make 55 cups of lemonade? If they sell 55 cups of lemonade, what is the

69. ## Math

Jordan has \$10.00.If each drawing pen costs \$1.49,how many can he buy?

70. ## physics

A 1.13 kg skateboard is coasting along the pavement at a speed of 4.28 m/s when a 0.93 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

71. ## MATH

The cost of tuition at Johnson Community College is \$190 per credit hour. Each student also has to pay \$60 in fees. Write a linear equation model for this situation. Use C for the cost and x for the number of credit hours.

72. ## chemistry

how many moles of nitrogen would be needed to make 10.0 ammonia?

73. ## world civilizations II

nationalist movements: a. all began as traditionalist, religiously based movements b. were called "tongs" in China c. were usually led by people with extensive knowledge of Western ideas and values d. did not begin in Southeast Asia until the 1930's

74. ## math words problem

Rich’s weekly salary is based on the number of pairs of shoes he sells. He is paid a base salary of \$25, plus \$5 for every pair of shoes he sells. The relationship between his pay (p) and pairs of shoes (s) sold can be represented by the linear equation

75. ## physics

A tight uniform string with a length of 1.80 m is tied down at both ends and placed under a tension of 100 N. When it vibrates in its third harmonic, the sound given off has a frequency of 79.0Hz . Part A What is the mass of the string?

76. ## Statistics

Can someone help me do this problem? A group of environmentalist are trying to estimate the population of the state rid in clear view park. They capture a sample of 500 birds in early spring and tag them. in august they capture 215 birds, of which 20 are

77. ## statistic

Explain the transformation needed to convert the following data to a linear data set. {(1, 0.98), (2, 1.39), (3, 1.71), (4, 1.98), (5, 2.22), (6, 2.43)} (6 points)

78. ## statistic

With an exponential transformation, how does the data set (x, y) change? (2 points) (log x, y) (x, log y) (log x, log y) cannot be determined without a data set

79. ## math

The Food Barn sells candy bars at a price of 5 for \$1. Margaret bought \$12 worth of candy bars there and resold half of them at a price of 3 for \$1 and half at a price of 2 for \$1. How much profit did she make (assuming her labor costs are zero)?

80. ## PHYSICS HELP!

A 73.5 kg ice skater moving to the right with a velocity of 2.64 m/s throws a 0.18 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction

81. ## science

What is a form of pollution triggered by a formation of a gas and can have dramatic effects? fog pesticides acid rain oil spill

82. ## Math

Is 0.475 divided by 0.045, equal to 10.5555 (with repeating fives)?

83. ## science i really really need help

Sue is setting up an experiment to test whether fly maggots select a dark or a brightly lit environment. She sets up a chamber in which there is a gradient in light intensity from one end (dark) to the other (brightly lit). The experimental hypothesis was

84. ## science

the honeyguide bird leading the honey badger to the bees hive, both eat meat what is the symbiosis for this

85. ## math

Tom and Max have 72 football cards.Tom has 2 more than 4 times as many cards as Max has. How many football cards does Tom have?

86. ## Politics

A major factor contributing to nonvoting is A. high income B. partisanship c. reductions of barriers to voting D. political alienation Is the answer B

87. ## Math

Carolyn and Kim are selling lemonade this summer. It costs 10 cents to make each cup of lemonade. They are going to sell each cup of lemonade for 25 cents. What is the least number of cups of lemonade they need to sell in order to collect \$10.00 more than

88. ## Physics Classical Mechanics

A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 4.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 40.0∘ with respect to the horizontal.

89. ## Science

Explain how the process of fertilization take place in human female ?what would happen if there is no fertilization?

90. ## Civics

1.)Why do states establish licensing boards for various professions? 2.) What would happen to the country's school districts if the federal and state governments didn't provide any financial assistance?

91. ## Math

A firefighters ladder, 65 feet long, rests against a tall building. If the bottom of the ladder is 16 feet from the building, how high up the wall does the ladder reach.

92. ## Chemisry

What weight of potassium chlorite is required to prepare 89.6 mL of oxygen measured over water at 21.0 degrees Celsius at 743 millimeters of mercury (mmHg). The vapor pressure of water at 21.0 degrees Celsius is 18.65 mmHg

93. ## Algebra 1

Solve using two different methods. Explain which method you found to be most efficient. A. 3x - 9y = 3 6x - 3y = -24 B. 7x - 3y = 20 5x + 3y = 16 C. y = 1/2x - 6 2x + 6y = 19 I am just stuck and don't know how to do these last few problems on my

94. ## Geography

What are the prospects of democracy in the region?

95. ## biology

Explain how the Punnett Square is related to probabilities, and describe what different regions of a Punnett Square represent

96. ## Samantha

Hello, i have to write a ccot essay. can someone please help find details for each of my subtopics? the topic: analyze continuities and changes that resulted from the spread of islam into west africa betweeen circa 800 ce to 1750 ce. changes: trade and

97. ## social studies

Who suggested the Great Comprise? a. Roger Sherman b. James Madison c. John Adams d. Benjamin Franklin I think the answer is James Madison, but I am not entirely sure.

98. ## math

what is the smallest number of people that must be gathered together to be certain that at least two people of the group were born in the same month?

99. ## Physics

Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a current Io=200A going into the page. A third thin, infinitely long wire with mass per unit length λ=5g/m carries current I going out of the page. What

100. ## science

Make a cross to show what will happen if a round seed (homozygus) is crossed with wrinkled green seed?

101. ## physics

How much tangential force must be exerted to stop a rotating solid disk (radius = 1.50 feet) weighing 480 lbs in 12.0 seconds? The disk is initially rotating at 600 RPM.

102. ## Physics

Suppose 2.7 centimeters of rain at 15 degrees Celsius falls on a rectangular field of dimensions 2.1 kilometers by 1.1 kilometers. The amount of energy released when water vapor condensed and cooled to form this rain is equivalent to how many

103. ## science

sound and light prentice hall science Explorer book 6th grade page 15 section 2 assessment 1.c. comparing and contrasting which wave properties are distances? which are measured relative to time

104. ## Algebra

A small business invests 33,000 in equipment to produce a product. Each unit of the product costs \$1.70 to produce and is sold for \$5.00. How many items must be sold before the business breaks even?

105. ## Social Studies

I am in 5th grade, and I need a easy interesting current event to write a paragraph about. Help me find a subject!!

106. ## Statistics

How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians are asked to complete hypothesis testing? Can you think of examples in

107. ## fin

As part of a new labor contract, Acme has agreed to make a one-time contribution of Euros 1,000,000 to the construction of a new physical fitness facility for its employees. This amount will be placed in an account earning E% (E = the fifth digit of SUN).

108. ## physics

If a board spans two bricks and carries a load of 10kg, where on the board does tension occur?

109. ## Physics

A straight copper wire that is 1 milimeter in diameter carries a current of 20 miliamps. Whas the magnitude of the largest magnetic field created by this wire in Tesla?

110. ## Algebra

Factor by grouping v^3-2v^2-4v+8

111. ## algebra

-3x-5y=-6 6x+5y=-34 how do i solve this using elimination?

Lisa's Running Distances Day Distances (in kilometers) Monday 2.05 Tuesday 4.10 Wednesday 3.80 Thursday 1.95 Friday 4.05 Estimate the average distance, in kilometers, Lisa ran for the five days. Explain your estimation strategy. Based on your previous

113. ## Quick math help

Write an equation in slope intercept form perpendicular to: -2x+8y=16 and goes through (4,5)

114. ## Math

A toothpaste company did a survey at the mall. They found that 42.5% of those surveyed brushed their teeth twice a day. Which random numbers would you generate on a computer spreadsheet to simulate the survey? a. random integers from 425 to 1000 b. random

115. ## English

What should the warrant be about in a argumentative essay?

116. ## Math (pre calculus)

Solve 2^3-x = 5^2x+1 Give an exact solution.

117. ## Algebra 1

12 + 12x = 12x + 12 A. None B. one C. Infinitely many D. Two solutions I think it's A. Thank you.

118. ## Quick math help

Apply a translation up 6 units to the following F(x)- -6x-10

119. ## Quick math help

Apply a reflection and translation down 3 units to the following: G(x)=3x-2

120. ## math

write a five digit number that fits each description use only the digits that the athlete are wearing use each digit only once in each answer find the greatest number less than 1.8 1. The digits ate 41836

121. ## science

Explain how your skin can be considered an organ.

122. ## Romeo and juliet 1 question

When do romeo and juliet meet and when do they die? I'm looking for the days , so I think they met on Sunday and died on Thursday but idk so please help:)

123. ## physics

An object that deforms when a force is applied to it and returns to its original form when the force is no longer applied is said to be

124. ## physics

A magnetic field is uniform in a region of radius 10 cm, and increasing at 0.02 Tesla/second.

125. ## American History

If John F. Kennedy was in office today, what do you think his approach to the media might be?

126. ## Physics

Problem 1- In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m . a) What is her gravitational

Show that the maximum profit occurs when the marginal revenue equals the marginal cost. I'm pretty sure this is supposed to be some sort of proof, but I have no idea how to even start it...

128. ## Astronomy help

I have already solve the problems in many time, but still cannot get the correct answer, can someone kindly help me to solve the problem, please? 1. Suppose the Moon is at a (center-to-center) distance D from Earth. Find an exact expression for the

129. ## world history

Most sages of the Axial Age took which of the following views of human nature? A. It's essentially bad. B. It's neither good nor bad. C. It's pre-determined. D. It's essentially good.

130. ## language arts

What do country life and city life have in common? I am making a Venn diagram for language arts and have identified their separate traits, but can't think of any they have in common.

131. ## science i really really need help

What is the independent variable? Select one option from the list below. 1 is the correct answer help me please .thanks Sue is setting up an experiment to test whether fly maggots select a dark or a brightly lit environment. She sets up a chamber in which

132. ## Physics

A chunk of metal with a mass of 81.1 grams and a specific heat of 153 joules per kilogram·kelvin is heated to 95.7 degrees Celsius and placed in 144 milliliters of water at 19.5 degrees Celsius. What are the final temperatures of the metal and the water?

133. ## Math help?

Can someone plz explain how to show scaled measurements in a scale drawing? For example: Width/x=24in/1in length/x= 24in/1in

134. ## Quick math help

Write an equation in slope intercept form perpendicular to (-3,10) (3,-2) and goes through (-2,5)

135. ## math

A standard deck of 52 playing cards is placed facedown on a table.how many cards must you draw from the deck to be certain that you have a pair of the same value?

136. ## physics

The area of a span that is unaffected by an applied force is

137. ## Algebra

Hi! Can you please re-check my answers. Mt teacher said some of them are not right but when I do it again, I still come up with the same answer. This is about Variations. Thanks! 1. What kind of variation equation is a=kbcd --> my answer is joint variation

139. ## Statistics

True or False The mean for a sample of n = 4 scores has a standard error of 5 points. This sample was selected from a population with a standard deviation of ƒã = 20.

140. ## Calculus

Lim x to 3 (-x^2)/((x^2)- 6x + 9) substitution i get -9/0 factoring i get same answer would that mean the answer is infinity? if not how could i prove that it isn't infinity

141. ## science urgent help

What is the independent variable? Select one option from the list below. 1 is the correct answer help me please .thanks Sue is setting up an experiment to test whether fly maggots select a dark or a brightly lit environment. She sets up a chamber in which

142. ## Mathematics

Without using calculator or tables, simplify log7root7-log5root5 divided by log 1.4

143. ## mathematics

From the first principles, find the derivation of (3x-1/2x)

144. ## chemistry

ok, so i did a lab called: measurements using electrochemical cels and electroplating, and one of the post lab questions asks,if the student fails to dry the electrode, in this case (Cu+2), what effect does it have on the calculated value of Faraday? and

145. ## English

1. Shut the door behind you. 2. Shut the door behind yourself. 3. I looked about me. 4. I looked about myself. 5. We have the whole week before us. 6. We have the whole week before ourselves. (Which expressions are grammatical? Is each pair grammatical?)

"This city of 200,000 has over 400 restaurants" Is that an unfinished claim? Unfinished claim-When you make a comparison, you state two things that are compared (for ex I am taller than you) Advertisers may intentionally not finish the comparison "this

147. ## math

how do i work the problems 2 20-7=18-___

148. ## English

I urgently need your help with a few sentences. Can you tell me which alternatives are possible? 1) What do you think of/about these shoes? 2) AlL the ones I have been shown are uncool 3) all of the ones I have been shown... 4) He was given two weeks by

149. ## Biology

1) What is free gibs? 2)What is energy carriers? 3)If the inner membrate of the mitochondria leaks hydrogen what will happen?

150. ## Science

6) - Which of the following compounds in the liquid phase can be considered an electrolyte?

151. ## math

A certain school has an enrollment of 400 students.Must there be at least two students in this school whose birthdays fall on the same day of the year?For this problem consider only non leap years.

152. ## Journalism

Please im begging you were going to submit the last articles tomorrow, help me make a feature article ... the topic is about unity for what happened in the philippines, the super typhoon yolanda please pleasple please

153. ## Physics

A ball has an initial velocity of -23m/s. If the ball has a new velocity of 76m/s after 27 seconds, what is the ball acceleration

154. ## Math

4x=y 4(7)=28 x=7 y=28 4(-5)=-20 x=-5 y=-20 4(-3)=-12 x=-3 y=-12

155. ## VNS

3 workers can do a job in 12 days.2 of the workers work twice as first as the third.How long would it take one of faster workers to do the job alone?

156. ## chemistry

will iron rust if it is placed in a test tube of ethanol acid with no water inside. Explain

1+1

158. ## mah statistics

the following table gives the number of camcorders sold on a given day in an electronics store X: 0, 1, 2, 3, 4, 5, 5, P(x) 0.5, .12, .23, .3, .16, .1, .04 find the mean, variance, and standard deviation of the daily sales of camcorders in the store.

159. ## math

what is the anwser for equivalent to 10⁄15

160. ## math

jenna has two lengths of ribbon, one 24 inches one 36 inches. she want to cut the ribbon inot equal lengths and not have any left over. what lengths can she cut the ribbon?

161. ## Math

x+4=y 8+4=12 x=8 y=12 7+4=11 x=7 y=11 5+4=9 x=5 y=9 -7+4=-3 x=-7 y=-3 2+4=6 x=2 y=6

162. ## Math

-8x=y -8(7)=-56 x=7 y=-56 -8(-6)=48 x=-6 y=48 -8(-8)=64 x=-8 y=64 8(-8)=-64 x=8 y=-64 -7(=8)=56 x=-7 y=56

163. ## science i really really need help

Sue is setting up an experiment to test whether fly maggots select a dark or a brightly lit environment. She sets up a chamber in which there is a gradient in light intensity from one end (dark) to the other (brightly lit). The experimental hypothesis was

164. ## math

Solve (x^3 y)^2/8x^1/3

165. ## math

solve the following inequality /3x + 12/ >/ 21 PS >/ means greater than or equal to.

166. ## Math

Jordan has \$10.00.if each drawing pen costs \$1.449,how many can he buy?

167. ## Math

x-3=y -1-3=-4 x=-1 y=-4 -6-3=-9 x=-6 y=-9 2-3=-1 x=2 y=-1 7-3=4 x=7 y=4 -5-3=8 x=-5 y=8

168. ## Math

x-8=y 4-8=-4 x=4 y=-4 8-8=0 x=8 y=0 0-8=-8 x=0 y=-8 6-8=-2 x=6 y=-2 -1-8=-9 x=-1 y=-9

169. ## Math

2x+1=y 2(-1)+1=-3 x=-1 y=-3 2(0)+1=1 x=0 y=1 2(-2)+1=-5 x=-2 y=-5 2(1)+1=3 x=1 y=3 2(4)+1=9 x=4 y=9

In a functional table, the input (a) is 10 and the output is 30. what are two possible rules? output = ____________________ output = ______________________