# Questions Asked onMarch 18, 2014

The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the poverty level cutoff in 1987 to the nearest dollar. the poverty level cutoff in 1987 was _____ dollars. (

2. ## Eric

Are these correct? 1. Which of the following is a correct statement about homeostasis? a. The effector sends the stimulus to the control center b. The receptor is enhanced by the control center c. The response causes disease d. The receptor sends the

3. ## College Algebra

The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the poverty level cutoff in 1987 to the nearest dollar. the poverty level cutoff in 1987 was _____ dollars. (

4. ## simple physics

You push downward on a box at an angle 25° below the horizontal with a force of 750 N. If the box is on a flat horizontal surface for which the coefficient of static friction with the box is 0.73, what is the mass of the heaviest box you will be able to

5. ## science

Three point charges are placed on the x-axis. A charge of +2.0 μC is placed at the origin, -2.0 μC to the right at x = 50 cm, and +4.0 μC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the

6. ## trigonometry

a clock has a dial face of 12 inches radius the minute hand is 9 inches while the hour hand is 6 inches the plane of rotation of the hour hand is 2 inches above the plane of rotation of the minute hand. Find the distance between the tips of the minute and

7. ## Quadratic Functions in Algebra

Suppose C(x)=x^2−6x+20 represents the costs, in hundreds, to produce x thousand pens. How many pens should be produced to minimize the cost? What is the minimum cost? Number of pens to minimize cost: Minimum Cost:

8. ## Language Art (Please Check)

1.B 2.A 3.B 1.which of the following is an example of a primary source? A.article written by an expert on the event B.letter from the time of the event C.website 2.When gathering information for a research paper,why is making a source card a good idea?

9. ## Trigonometry

Mountain officials want to build a new ski lift from B to C as shown in the figure below. The distance from A to C is 1480 feet. They measure angle DAC to be 32 degrees and angle DBC to be 18 degrees. What is the distance A from to B? Round your answer to

10. ## Chemistry

A 10.00 gram solid sample consisting of a mixture of sodium chloride and potassium sulfate is dissolved in 100.0 mL of water is combined with another 200.0 mL solution that contains excess aqueous lead(II) nitrate. Upon mixing the two solutions, a solid

11. ## Chemistry

The Ksp of tin(II) hydroxide, Sn(OH)2, is 5.45 × 10-27. Calculate the solubility of this compound in g/L.

12. ## Algebra

One more rectangular-shaped piece of metal siding needs to be cut to cover the exterior of a pole barn. The area of the piece is 30 ft². The length is 1 less than 3 times the width. How wide should the metal piece be? Round to the nearest hundredth of a

13. ## Chemistry

Hello! I'm doing these questions for my chemistry homework, and I can only figure out the first one, I don't know how to do the rest, I'm completely stuck! Please help!! Thank you! 1.) For the reaction, calculate how many grams of the product form when

14. ## Algebra I

Solve the linear equation by elimination 10x-9y=46 -2x+3y=10

15. ## Chemistry

A reaction has a standard free-energy change of –10.30 kJ mol–1 (–2.462 kcal mol–1). Calculate the equilibrium constant at 25ºC.? This is what I've done so far.. ∆Gº= -2.3 RT + log (K) -10.31 kJ = -2.3 (.0083145)(298) + log K -10.31 kJ = -2.3

16. ## Chemistry

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Cr(s)+3O2(g)→2Cr2O3(s) 1.) 1 molCr; 1 molO2 2.) 4 molCr; 2.5 molO2 3.) 12 molCr; 10 molO2 4.) 14.8 molCr; 10.3 molO2 Express your answer as a

17. ## chemistry

2C3H6(g) + 2NH3(g) + 3O2(g) -> 2C3H3N(g) + 6H2O(g) A 150.0 liter steel reactor at 25 ºC is filled with the following partial pressures of reactants: 0.500 MPa C3H6, 0.800 MPa ammonia, and 1.500 MPa oxygen gas. If the reaction proceeds to 90% yield, and no

18. ## PRE-CALC

A number is selected at random from the set {2, 3, 4, … ,10}. Which event, by definition, covers the entire sample space of this experiment? A) The number is greater than 2. B) The number is not divisible by 5. C) The number is even or less than 12. D)

19. ## Chemistry

This compound is mescaline, a hallucinogen. Which of the following statements is true? Mescaline is an amine. Mescaline contains an alcohol group. Mescaline is a carboxylic acid. Mescaline is an amine and contains an alcohol group.

20. ## Chemistry

Natural gas is almost entirely methane, CH4. What volume of natural gas at 20 C and 1.00 atm pressure is required to heat one quart of water from 20 C to 100 C? The density of methane at 20 C is 0.665 g/mL. The reaction for the combustion of methane is CH4

21. ## Chemistry

I need to vary the surface area by choosing different size beaker. I will put liquid in there so it would have to be volume??cm^3? But the question is how can I calculate the surface area of the beaker ??? The key thing here is the container... Examples:

22. ## us history

How did the Virginia Plan, the New Jersey Plan, the Great Compromise, and the Three-Fifths Compromise lead our current form of Congress?

23. ## physics

A 5.0-nC charge is at (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, 4.0 m)? Answer 1.5 × 10-8 J 3.6 × 10-9 J 1.1 × 10-8 J 7.7 × 10-9

24. ## chemistry

In the following reaction, how many liters of oxygen produce 560 liters of carbon dioxide in the oxidation of methane, given that both gases are at STP? CH4 + 2O2 ¨ CO2 + 2H2O

25. ## physics

The angle of incidence and the angle of refraction for light going from air into a material with a higher index of refraction are 69.9° and 39.6°, respectively. What is the index of refraction of this material?

26. ## Floral design

During April, a customer asks you to create an arrangement for an invalid friend who must stay at home for five more days. The invalid friend loves flowers, especially fragrant ones. The amount the customer is willing to spend on the arrangement for this

47. ## Algebra URGENT! Conic sections

A spacecraft is in a circular orbit 150 kilometers above Earth. Once it attains the velocity needed to escape the Earth's gravity, the spacecraft will follow a parabolic path with the center of Earth as focus. Suppose the spacecraft reaches escape velocity

48. ## carver

Bruce needed two (cupful) of sugar to make punch for four (grandchild).

49. ## math

There are 22 students on the debate team. The number of boys is two more than three times the number of girls. How many boys are on the team?

50. ## Physics

If you try to lift a 2 x 10 plank by applying 25 N force but plank does not move did you do any work?

51. ## physics

A 3.0-kg object moving 8.0 m/s in the positive x direction has a one-dimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?

52. ## Math

Increase a number by 21, multiply the result by 3, then subtract 9, and divide by 5. If the final result is 30, what number did you start with?

53. ## Language Arts

Need help on the sentence below. Can't decide if it is complex or compound. I know if it didn't have the "and" it would be complex but the "and" is throwing me off. "They listened to many American recordings, and then they added new ideas to their music.

54. ## Geometry

In (triangle)EFG, if m

55. ## English

Sorry, I left out a "mood" Read the following sentences from "Five Hours to Simla." The baby let drop its narcotic rubber teat, delighted. Its eyes grew big and shone at all it saw flowering about it. The little girl was perplexed, wondering what to choose

56. ## Skills for Success

How would Jenny best allocate her income for the month?

57. ## finance

Linda Scales is now employed as the managing editor of a well-known business journal. Although she thoroughly enjoys her job and the people she works with, what she would really like to do is open a bookstore of her own. She would like to open her store in

58. ## statistics

You have an SRS of 15 observations from a Normally distributed population. What critical value would you use to obtain a 98% confidence interval for the mean μ of the population? I know the answer is 2.602...but I do not understand why Tell me if I'm

59. ## math

substitute 400 for x 0.005x^2-45x+12,000

60. ## english-essay writing topic

what is a good topic to write about for a personal essay? it has to be something that is meaningful. PLEASE HELP ASAP!!!

61. ## science help

If water temperature changes in favor of greater oxygen levels how do the population of the fish and wading bird population change in response to the new oxygen over time? I would think the fish population would increase and so would the birds (because the

62. ## CHEMISTRY

The data below has been taken for the reaction of a dye with the hydroxide ion. The reaction was performed at two different hydroxide ion concentrations while the dye concentration was kept constant. What is the rate law? [OH─] = 0.10 M [OH─] = 0.20 M

63. ## America history

6. In Mesoamerica, the shift to basic crops, including corn, beans, and squash, is referred to as the _______ revolution.

64. ## Math

Liam has a bag containing five red, two blue, five green, six yellow and two white marbles that are all the same size and shape. what is the probability of randomly choosing a green marble on the first pick, not replacing it, and then randomly choosing a

A model rocket is launched with an initial velocity of 128 ft/s from a height of 70 ft. The height of the rocket, in feet, t seconds after it has been launched is given by the function s(t)=−16t^2+128t+70. Determine the time which the rocket reaches its

66. ## Psychology

Cognitive neuroscience is an emerging field of study. How should we feel this will impact cognitive psychology and your life?

67. ## physics

A bullet A of mass 2kg travelling at 200m/s emblezes itself in a wooden block of mass 9kg moving in the opposite direction. At 20m/s. Calculate the velocity of the block when the bullet comes to rest inside the block. And what principle is used in the

68. ## science question

If changing conditions lead to decreased oxygen levels in a stream, the carrying capacity of the stream for fish will decrease. Oxygen level in water is therefore a ______with respect to the number of trout that stream can support. Any idea?

69. ## chemistry

Sometimes the basicity of a solution is reported using pOH (pOH = -log[OH-]). What is the a. [OH-] if pOH = 1.90 b. [H3O+] if pOH = 12.94 c. pH if pOH = 9.70

Can you recheck these? I don't understand. 10. I enjoy it because the temperature is pleasant, and everything is green and pretty. ans: cd (compound) 11. I also love to hear the birds singing in the trees and to watch them building their nests. ans: SS

71. ## math***1questions***

1.B New flowers are being planted in acurcular flower bed with a 14-foot dimeter.if each flower requires 1 square foot of space,about how many flowers can be planted A.308 flowers B.154 flowers C.77 flowers D.66 flowers

72. ## solid mensuration

A prism measuring 5 ft tall with a triangular base whose sides measures 7 ft, 3 ft, and 9 ft. In the base, the distance from the 9 ft side to the opposite vertex is 2 ft.

73. ## gaso;ine

How many gallons of gasoline were sold in 2013

74. ## help i have no idea!!!!!!

1.It took Jack 4 hours to drive from his house to the beach at a speed of 45km/h. If he takes 5 hours to make the return trip home,what will his speed be?

75. ## english

Settlers reached the organ territory in 1840's. Which is the verb of the sentence? a)1840's b)reached c)oregon territory d)settlers

76. ## help i have no idea!!!!!!

2.The distance between Jill's home and her school is 400 meters. She walked 1m/s for five minutes. How many meters does she still have to travel to reach her school?

77. ## Physics

How would i solve this? (30)(Cm)Δ+(335.5)(4.18)Δ(21)=0

78. ## help i have no idea!!!!!!

3.Sam is a mailman who delivers mail in a mail truck. His route is 2 kilometers long. He usually starts his route at 8:00 am and finishes by 12:00pm If Sam decided to get a bigger route that is 12 kilometers long, what does his average speed need to be to

79. ## Chem

Give the formula for the conjugate base of each acid. A.HSO4- B.H3PO4 C.HPO42- I have my answers as h2so4 h2po4 h2po4- my answrers are wrong, please help

80. ## math

y = 4x^2 cosx

81. ## Math

Write a multiplication equation that has a solution of -14.8

82. ## STATISTIC ****HELP****

The tests done to determine if someone is HIV positive are called Enzyme immunoassay or EIA tests. The test screens a blood sample for the presence of antibodies to HIV. Like most tests, this test is not perfect. The table below shows the approximate

83. ## help i have no idea!!!!!!

4. The car was at the 45km marker and drove to the 120km marker. What distance did the car travel?

84. ## Trigonometry

Consider the triangle ABC. Suppose that C=69 degrees, a=45 and b= 9 Carry your intermediate computations to at least four decimal places, and round your answers to the nearest tenth. List all solutions A= B= c=

85. ## Science

what type of bond is a metal cation likely to form?

86. ## Math 3

Lauren is baking dog biscuits to donate to her local shelter. She bakes 130 cookies and wants to package them in plastic bags. If each bag holds 8 biscuits, how many bags will she need to package all of the cookies? Is it 16 or 17 bags? Thanks

87. ## math

1/8 of Tony's are mystery books he had3 mystery books. How many books does he have in all?

88. ## Math

Point A lies at (2, 3) on a coordinate system. If the coordinate axes are rotated 45°, what is its position on the new coordinate system?

89. ## Math

What is the limit of f(x)=4x^2−6/4x^2−1 as x approaches infinity? A) 1 B) 3 C) 4 D) 6 E) -4

90. ## Math

The supply and demand for a business manufacturing toy cars are given by these two equations, where y is the price in dollars per item and x is the number of toy cars sold in thousands. Supply: y = x^2 − x + 0.5 Demand: y = x^2 − 1.6 The two graphs

91. ## Science

how did the discovery of nutrons change the atomic model

92. ## Basic English

9. Which of the following sentences contains a comma splice? A. Our friend, who travelled from Tennessee, was quite tired when he arrived. B. The kitten climbed the drapes, it couldn't figure out how to get down. C. The cruise ship docked on Oahu, then

93. ## LA pls help!!!

1. What is one similarity between the opening paragraphs of "America the Not-So-Beautiful" and "A Glimpse of Home"? #1 point# Both authors share a personal experience. Both authors appeal to the readers' emotions. Both authors identify themselves as part

94. ## Math

Write multiplication equation that has a solution of 9/14

95. ## PHYSC101

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

96. ## Chemistry

what would be the molality of a solution if 71g of Cl2 were added to 400 mL of acetone (D=0.788 g/mL)

97. ## chemistry

Calculate the pH of a buffer system composed of 0.880 M C5H5N and 0.660 M C5H5NHNO3. The Kb for C5H5N is 1.70 x 10^-9.

98. ## Chemistry

What does each electron outside of a nucleus occupy?

99. ## science

30 cubic meters of argon gas are kept under constant pressure. The gas is heated from 10.0 degrees Celsius to 293 degrees Celsius. What is the new volume of the gas?

100. ## EASY QUESTION IM DUMB

IF you try to lift a 2x10 plank by applying 25 N force but the plank does not move did you do any work?

D/6 = -10

102. ## Science

Some water molecules are split into hydrogen and oxygen when going from: A. Atmosphere to clouds B. Ocean to atmosphere C. Ground water to surface water D. Surface water to biosphere EXPLAIN!

103. ## Physics

A force of 9.4N pulls horizontally on a 1.2-kg block that slides on a rough, horizontal surface. This block is connected by a horizontal string to a second block of mass m2 = 2.00kg on the same surface. The coefficient of kinetic friction is μk = 0.25 for

104. ## HISTORY

IN VIRGINIA, COLONIST WHO COULD PAY THEIR WAY ACROSS THE ATLANTIC WAS GRANTED 59 ACRES OF LAND TO LEASE. THE TERM FOR SUCH AN ARRANGEMENT IS CALLED'

105. ## Chemistry

Oxygen gas, from the decomposition of KClO3, was collected by water displacement. The pressure and temperature in the lab during the experiment were 451.0 torr and 20.0 C. What was the partial pressure of oxygen?

106. ## Math

Eric and Madison both measured the trading card. Eric says he got 3 inches and Madison says she got 2 3/4th. The teacher says both are right. How is that possible?

107. ## Chemistry

1. Calculate the mass of each compound required to make 25mL of the following solutions: (a) 0.10 M Ni(NO3)2 • 6H2O (b) 1.0 M NaClO4 • H2O (c) 0.11 M trien (C6H18N4) 2. Calculate the concentrations of Ni2+ and trien in a solution prepared by mixing

108. ## Science

For carbon to move from an animal to a car, what processes need to happen? Photosynthesis, combustion, and respiration? Respiration, fossilization, and photosynthesis? Fossilization, decomposition, and respiration? Or respiration, photosynthesis, and

109. ## literature

why do you think audiences were silent at the end of the play of the diary of anne frank

110. ## AP Calc

The base of a solid is bounded by y=|x|+a,

111. ## AMERICAN HISTORY

BEFORE DEPARTING FOR WHAT WOULD BECOME THE PLYMOUTH COLONY, THE SCROOBY SEPARATISTS FIRST LIVED FOR IN A.SCOTLAND B. THE CHESAPEAKE C. THE NETHERLANDS D. BELGIUM

112. ## College Algebra

How to get the answer to a formula if I=ã2P/L relates the coefficient of self-induction, L (in henry's), the energy P stored in an electronic circuit (in joules), and the current I (in amps). Find I if P=120 and L=70. The example I have to go by does

113. ## AMERICAN HISTORY

WHICH HIGH FEDERALIST TRIED TO CRUSH INTERNAL POLITICAL DISSENT AFTER XYZ A. JOHN ADAMS B. GEORGE WASHINGTON C. ALEXANDER HAMILTON D,THOMAS JEFFERSON

114. ## math

Can you help me solve Write in to other ways decimal and percent 4/250

115. ## Accounting - need guidance

On January 1, 2012, Bartell Company sold its idle plant facility to Cooper Inc. for $1,050000. On this date, the plant had a depreciated cost of$735,000. Cooper paid $150,000 cash on January 1, 2012, and signed a$900,000 note bearing interest at 10%. The

116. ## History

how have the metis retain their culture in modern canada

117. ## American Goverment

Which is an important function of county government? A. taxing imports B. overseeing tribal governments C. running elections D. hosting foreign leaders

118. ## health

Drinking in moderation or not drinking at all will typically lead to? A. Weight gain B. Heart disease C. Weight loss D. High blood pressure

119. ## Math

A kaleidoscope is a tube-shaped instrument that contains mirror and colored glass. When a viewer looks in one end, (s)he sees vibrant, changing patterns. Tami sees a kaleidoscope in the shape of triangular prism. It has a height of 4 inches, a base of 5

120. ## English

I have to write a paper on an author and then effectively persuade the audience that this author is an important and influential writer who should be included in the curriculum for a college writing course. I chose Ernest Hemingway. This is my thesis -

121. ## chem

18.1g of ammonia and 90.4g of copper(II) oxide are used in the reaction 2NH3+3CuO=N2+3Cu+3H3O.What is the limiting reactant? How many grams of nitrogen will be formed?

122. ## science quiz pls help!!!

In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True False***? 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100

123. ## statistics

Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give your answer correct to two decimal places.) Sample n x G n=384 x=314 H n=423 x=329

124. ## Biology

Briefly describe a portal system and give the location of two portal systems in the human body.

125. ## Math

Write in order from least to greatest. +3,-1,-4,+2,0

126. ## Science

1. Where is the Earth's equator located today? Describe the climatic conditions. 2. Compare and contrast the climatic conditions existed during this time today. 3. Answer: What types of fossils would you expect to find here? Explain why based on the

During a given month, P(A)=0.75,P(B)=0.6, and p(A and B). Are these two events independent? are they mutually exclusive. yes;yes yes;no no;yes no;no it cannot be determined yes;no 3. There are two prominent, nationally circulated newspapers, The Wall

128. ## statistics

In a survey of families in which both parents work, one of the questions asked was, "Have you refused a job, promotion, or transfer because it would mean less time with your family?" A total of 200 men and 200 women were asked this question. "Yes" was the

129. ## Math help

1. You roll a number cube numbered 1-6 12 times. p(5)= 2\3. what type of probability is illustrated and why? 2. You draw five cards from a standard deck of 52 cards. p(heart)= 4\5. what type of probability is illustrated and why?

F+7=10

131. ## statistics

Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 7, n2 = 16, and á = 0.05 F=?

132. ## physics

What is the minimal resistance of a 100 W light bulb designed to be used in a 120 V circuit? Answer 12.0 Ω 144 Ω 1.2 Ω 0.83 Ω

-9=6+a

5=7+n

135. ## Chemistry

a 2.500 g sample of a pure compound was analysed and found to contain 1.094 g of nitrogen.determine whether the compound is either NH4NO3 or NH4NO2 .show all by calculations.

136. ## science

What describes the charecteristics of a liquid? A.) It has a fixed volume and shape. B.) It has high energy and expands to fill the container. C.) It has fixed volume and varied shape. D.) It has no fixed volume or shape.

137. ## math 7th

a right triangular prism has a length of 11 units.Its right triangle face has legs of 3 and 4 and a hypotenuse of 5. what is the surface area of the right triangular prism.

138. ## Chemistry

It is commonly known that freshly cut fruits turn a brownish color when exposed to the air for a number of minutes. This is due to the action of the enzyme polyphenoloxidase. It is also well known that the formation of the brown color can be prevented or

139. ## Statistic

A local eye clinic has two doctors. Dr. Kutallot recommends glass 60% of the time and corrective surgery 40% percent of the time. Dr. Lenzie recommends glasses 70% of the time and 30% of the time. 60% of the patients are treated by Dr. Lenzie. No patients

140. ## Math

how to explain to my child this math problem : davia draws a shape with 5 sides .Two sides are each 5 inches long . Two other sides are 4 inches long.The perimeter of the shape is 27 inches . What is the length of the fifth side?

141. ## math

holly's garden is divided into 5 equal sections. she will fence the garden into 3 areas by grouping some equal sections together. what part of the garden could each fenced area be?

142. ## English

Which of the following sentences from "Five Hours to Simla" best illustrates the mood of frustration? (1 point) • "After the first cacophony of screeching brakes and grinding gears. there followed the comparatively static hum of engines, and drivers

143. ## Science

How did the discovery of neutrons change the atomic model?

144. ## Science

What type of a bond is a metal cation likely to form?

145. ## PHysiscs

Four acrobats of mass 83.5 kg, 68.0 kg, 62.0 kg, and 55.0 kg form a human tower, with each acrobat standing on the shoulders of another acrobat. The 83.5-kg acrobat is at the bottom of the tower. (a) What is the normal force acting on the 83.5-kg acrobat?

146. ## Science

Artificial Selection leads to loss of Genetic Variation? or Genetic Equilibrium?

147. ## Physics

If the work required to stretch a spring 4 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 14 inches beyond its natural length? Your answer must include the correct units. (You may enter lbf or lb*ft for ft-lb.)

197. ## Calculus Help

use logarithmic diff. to find the derivative of the function. Show steps please! so I can see how it is done. Thank you so much! y=(e^(-x)cos^(2)(x))/(x^(2)+x+1)

kayla bought a bag of grapefruit. each morning for 5 days she and her father each ate one half of a grapefruit. her mother ate 3 halves total in that time. how much grapefruit did they eat altogether? write your answer as an improper fraction and as a

199. ## chemistry

Balanced equation of the reaction that occurs when the butane in cigarette lighters burns in the presence of enough oxygen

200. ## english

What is the most likely reason the author wrote " Eagle's Flight "

201. ## Science

For carbon to move from an animal to a car, what processes need to happen? Photosynthesis, combustion, and respiration? Respiration, fossilization, and photosynthesis? Fossilization, decomposition, and respiration? Or respiration, photosynthesis, and

202. ## Personal

I have a question about like life... it relates to school as well. Like I have a huge project due THIS Thursday and I helped take care of my friends dogs and I have to take pictures of them and my friend says I can take them now and when I ask her she