# Questions Asked onNovember 6, 2014

an athlete stretches a spring an extra 40.0 cm. how much energy has he transferred to the spring, if the spring constant is 5286.0 N/m? Us= 1/2kx^2 =1/2(5286.0)(.40)=1057.2 J Thanks!

2. ## chemistry

Rank the following elements by electron affinity, from most positive to most negative EA value: tellurium, bismuth, neon, sodium, iodine i tried Te, Bi, Na, I, Ne and it was incorrect.

3. ## Calculus

When estimating distances from a table of velocity data, it is not necessary that the time intervals are equally spaced. After a space ship is launched, the following velocity data is obtained. Use these data to estimate the height above the Earth's

4. ## algebra help!

what is the domain of the function below? {(0,2)},(3,1),(5,2),(8,4)}? a. {1,2,4} b. {0,3,5,8} c. {0,1,2,3,4,5,8} d. {(0,2),(3,1),(5,2),(8,4)} ***** Is the following relation a function? {(0.3,0.6),(0.4,0.8),(0.3,0.7),(0.5,0.5)} a. yes b. no ***** c. cannot

5. ## Chemistry

Sort these species into isoelectronic groups. It doesn't matter which group goes in which box, so long as the correct species are grouped. Ne Mg2+ S2- Ti4+ K+ He Li+ Be2+ N3-

6. ## English

1. Both Walt Whitman and Emily Dickinson were influenced by the Romantics. Choose one of the two poets. Provide at least three ways that he or she reflects Romantic thinking in his or her writing. Then give an example from one of the works that you studied

7. ## chemistry

A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution before the addition of any KOH. The Kb of NH3 is 1.8 × 10-5. I thought that I would need a second volume to find the moles of NH3?

8. ## science

A 5.0 kg model vehicle travelling at 14 m/s experiences a rocket boost of 85 N ( in the direction of motion) for 20 s What is the resulting speed? The answer is 350 but i don't know how to get to that answer

9. ## Trigonometry

A boy is twirling a model plane on a string that is 2 meters long. If he twirls the plane at 0.4 revolutions per second, how far does the plane travel in 5 minutes? Give your answer in meters to 2 decimal places.

10. ## algebra

A bookstore can purchase several calculators for a total cost of \$350. If each calculator cost \$2 less, the bookstore could purchase 20 additional calculators at the same total cost. How many calculators can be purchased at the regular price?

11. ## math

If a number is added to the numerator of 5/6 and twice as much is added to the denominator, the result is 3/5 Find the number?

12. ## Science

There are two forces acting on a box of golf balls, F1 and F2. The mass of the box is 0.750 kg. When the forces act in the same direction, they cause an acceleration of 0.450 m/s2. When they oppose one another, the box accelerates at 0.240 m/s2 in the

13. ## algebra

A repairman purchased several furnace-blower motors for a total cost of \$150. If his cost per motor had been \$5 less, he could have purchased 1 additional motor. How many motors did he buy at the regular rate?

At the Out - Rage Benefit Concert, 723 tickets were sold for \$3/ student and \$5/ non- student. The benefit raised \$2,815. How many non- student tickets were sold?

15. ## math

Look at the numbers below. 75, 74, 72, 69, 65 A: describe the pattern

16. ## english

an article on mobile culture the ethics thanks in advance!

17. ## physics

What is the maximum speed that the car can turn in a curve of radius 29.0 m without slipping? The coefficient of static friction between a road and a car's tires is 0.500, and the coefficient of kinetic friction is 0.390. Assume that the road is horizontal

18. ## english

Both texts deal with racial discrimination. How does the structure of poem help convey this meaning in a way that the prose passage does not? A)The poem conveys meaning through imagery; the prose passage does not. B)The poem uses first person point of

19. ## Physics

Three particles A, B, C start from the origin from the same time, A with velocity a along x-axis, B with velocity b along y-axis, C with velocity c in xy plane along a line x=y. What should be the magnitude of c so that they always remain collinear is (a).

20. ## Physics

What is the apparent weight of a 70-kg astronaut 3800 km from the center of the earth's moon in a space vehicle moving at constant velocity and acceleration toward the moon at 2.9m/s^2? State the direction in each case.

21. ## Science

A sled is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. What is the sled's potential energy?

22. ## psychology

For this discussion, please choose one of the two options: behaviorism or cognitivism. Taking on the role of either a behaviorist or a cognitivist, you will demonstrate your understanding of your chosen psychological view by explaining why your theory and

23. ## Science

A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown in the table below. Liquid reactant A = 10 g Liquid reactant B = 17 g Beaker + solid product= 32 g What is the mass of the beaker? A. 5 g B. 10 g C. 15

24. ## Math

A bungee jumper falls from a bridge 300 feet above ground. Her height above ground after t seconds is given by the equation h=16t^2+300 where h is the height of the jumper in feet and t is the time in seconds after she jumps. Approximately how long will it

25. ## Math/Statistics

The number of megapixels in a digital camera is one of the most important factors in determining picture quality. But, do digital cameras with more megapixels cost more? The following data show the number of megapixels and the price (\$) for 10 digital

26. ## Language arts Help

MacNeil asks, "When before in human history has so much humanity collectively surrendered so much of its leisure to one toy, one mass diversion?" What is this persuasive technique called? A. Repetition B. A generalization C. A rhetorical question D. A

27. ## physics

A constriction in a pipe reduces its diameter from 7.9 cm to 1.8 cm . Where the pipe is wider, the fluid velocity is 8 m/s. Find the fluid velocity where the pipe is narrow. Answer in units of m/s

28. ## Optimization

A hunter is at a point on a river bank. he wants to get his cabin, located 19 miles north and 8 miles west. He can travel 5 mph on the river bank and 2 mph on the rough rocky ground.how far upriver should he go in order to reach the cabin in the minimum

29. ## Trigonometry

Suppose that Lance Armstrong1 is using a 180 mm chain ring and pedaling at a rate of 80 revolutions per minute. The wheels on his road bike have a diameter of 622mm. What diameter sprocket on the rear wheel does he need to maintain a speed of 30 kilometers

30. ## CHEMISTRY

If the gas was instead in a cylinder with a floating, massless, frictionless piston, what would the volume of the gas be (in liters) at STP?

31. ## Pre Algebra

When adding the sqare root of 25 and negative 9, which type of number is the sum? Whole Number Irrational Number Integer Radical

32. ## Basic Dressmaking Processes

1. In order to produce a professional-looking garment, pressing should be done A. at each process. C. just on the right side of the fabric. B. only when the garment is complete. D. quickly and with a light touch. 2. A wooden clapper is used to A. hold an

33. ## Science HELP

Sodium is a metal and chlorine is a poisonous gas. Neither is safe to eat. However, when sodium and chlorine combine, it produces edible table salt. What can be concluded? A. Table salt has similar physical properties of both reactants. B. Table salt is a

34. ## maths - Ratio

the scale on a map is 1:2500, a pond is represented on the map as a shape whose perimeter is 12cms. Find the actual perimeter of the pond in kilometres. what is the full working out

35. ## math

0.082 rounded to ?

36. ## art

What is the most significant difference between the two sculptures below? Nimrud's sculpture is a relief sculpture, Donatello's sculpture is a sculpture in the round. Nimrud's sculpture glorifies Mesopotamian Gods, Donatello's sculpture is sinful. Numrud's

37. ## Math

Polluted water flows into a pond. The concentration of pollutant, c, in the pond at time, t, minutes is modeled by the equation c(t) = 9 - 90 000 (1/ 10 000 + 3t) a) When will the concentration of pollutant in the pound reach 6kg/m^3?

38. ## math

which number is a perfect cube a.7 b. 25 c. 66

asked by somebody help i am new
39. ## college statistics

the average length of time required for students to complete a test in a an introductory statistics course is found to be 50 minutes with a standard deviation of 12 minutes. if students are allowed 80 minutes to complete the test , approximately what

I KNOW what the caged bird feels, alas! When the sun is bright on the upland slopes; When the wind stirs soft through the springing grass, And the river flows like a stream of glass; When the first bird sings and the first bud opes, And the faint perfume

41. ## physics

A pelican flying along a horizontal path drops a fish from a height of 3.3 m. The fish travels 7.6 m horizontally before it hits the water below. What was the pelican’s initial speed? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s

42. ## english

A few weeks ago I was in company with my friend Josephine S. Griffing, when the conductor of a streetcar refused to stop his car for me, although (I was) closely following Josephine and holding on to the iron rail. They dragged us a number of yards before

43. ## Science HELP

According to the law of conservation of mass, what should the product side of this single replacement reaction look like? Zn+2HCl--->? A. H2ZnCl2 B. H2+Zn+Cl2 C. H2+ZnCl2 D. ZnCl2 Is the answer D?

44. ## real quick question

What is the best antonym for the word progressive? A)traditional B)forward thinking C)new D)experimental confused

45. ## Physics

41. A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 0.2 m/s^2. If the student uses a force of 15 N, what is the coefficient of kinetic friction of the floor? Okay, so I know that the net force is 15 and

46. ## Math/Algebra

The graphs of y=3-x^2+x^3 and y=1+x^2+x^3 intersect in multiple points. Find the maximum difference between the y-coordinates of these intersection points.

47. ## Science

Water is pumped from a stone basin up through a pipe 1 meter high. At that height, the water flows out through a tap and falls down through the air to the basin below, where the cycle begins again. What is the gravitational potential energy of 2.5

48. ## statistic

A student must pass through 12 sets of traffic lights on his way to university. Suppose that each of the lights is green 39.5% of the time, yellow 5.9% of the time, and red 54.6% of the time. Suppose also that the traffic lights function independently (b)

Please check my answers because I need to do good at this. 1. When consuming fats the healthiest choice is foods high in? A. saturated fats B. unsaturated fats * C. trans fat D. cholesterol 2. The body's main energy source should come from what essential

50. ## Intermediate Algebra

Atmospheric carbon dioxide levels continue to increase and are suspected to contribute to global warming. The solution to the polynomial equation x3 – 380x2 + 2x – 760 = 0 gives the record high amount of carbon dioxide in parts per million (ppm) in

51. ## chemistry

A mixture of gases has the following partial pressure for the component gases at 20 degrees Celsius: oxygen 180.0 torr, nitrogen 3200 torr, and hydrogen 246.0 torr. Calculate the pressure of the mixture.

52. ## Biology

What are the macromolecules DNA and RNA referred to as? Proteins Carbohydrates Nucleic acids

asked by Help me quick question
53. ## Chemistry due soon

What is enthalpy? A. Enthalpy is the kinetic energy of a system. B. Enthalpy is the heat involved in a reaction. C. Enthalpy is the temperature of a reaction. D. Enthalpy is the mass involved in a reaction. I think the answer is a or b

54. ## Math HELP!

Find the unit rate. In 10 months, 62.6 gallons were used. A. 0.16 gallon/month B. 10 gallons/month C. 6.26 gallons/month D. 626 gallons/month Is the answer C?

55. ## maths

maria gave two fifths of her stickers to susan but still had 18 left. how many did she give susan. thats my homework question and i don't understand how i find out the answer

56. ## science

Carbon dioxide is obtained from the air and changed into carbohydrates and oxygen during the process of A.fossilization B.resperation C.digestion D.photosynthesis Is the answer B?

57. ## chemistry

when x gram of carbon is completely burnt in certain amount of oxygen y gram of carbondioxide is form.what mass of Co2 will be produced when 2x gram of carbon is burnt in z gram of oxygen. which law of chemistry will help me to find the answer

58. ## sbmjc

how many moles of methane is required to produce g of co2 after the complete combustion ?

59. ## science help!!!!!!!!!

You are creating a carbon cycle poster. In which direction would you draw arrows to show the movement of carbon through the process of resperation? A.from the rocks to the air B.from the rock to the grass C.from the air the wolf D.from the wolf to the air

60. ## geometry

Jake needs 9 pieces of rope that are each the same length. He cuts the pieces from a rope that is 8 yards long and uses up the whole piece of rope. How long is each piece of rope?

61. ## science

brain central nervous system human being nerve tissue neurons Organize the parts of this body system in the CORRECT order according to the levels of organization in a multicellular organism, simplest to most complex..

62. ## Algebra HELP!

A teacher instructed her class to take any number and perform a series of computations using that number. The teacher was able to tell each student's original number by subtracting 1 from the student's answer. Create similar instructions for students so

63. ## Algebra

A baseball is hit at a point 2 feet above the ground at a velocity of 100 feet per second and at an angle of 45 degrees with respect to the ground. The path of the baseball is given by the function: f(x)= -0.0032x^2+x+2. where f(x) is the height of the

64. ## physics

A car drives straight down toward the bottom of a valley and up the other side on a road whose bottom has a radius of curvature of 125mm . At the very bottom, the normal force on the driver is twice his weight.

65. ## physics

A 73 kg man in a 4.3 kg chair tilts back so that all his weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area of radius 1.5 cm. Find the pressure exerted on the floor by each leg. The

66. ## physics

If the average gauge pressure in the vein is 14400 Pa, what must be the minimum height of the bag in order to infuse glucose into the vein? Assume that the specific gravity of the solution is 1.05. The acceleration of gravity is 9.8 m/s

67. ## physics

What force F must be applied to the small piston to maintain the load of 49 kN at a constant elevation?

68. ## physics

A circular swimming pool has a flat bottom and a 4.39 m diameter. It is filled with water to a depth of 1.51 m. There is 1.36 atm of pressure on the top surface.

69. ## physics

How many joules of heat are required to melt 20.0 kg of ice at 0°C?

70. ## Science 8A

Umm, can someone give me an example of a stable system? Also, how were you able to determine whether or not this system is stable? Please help! Urgent!

71. ## math

7 books to wrap, each 5/6 of a foot long. how long a roll needed 7x12 =84 5/6x7=35/42?

72. ## physics (work/nonconservative forces)

An object moving along a horizontal track collides with and compresses a light spring (which obeys Hooke's Law) located at the end of the track. The spring constant is 47.3 N/m, the mass of the object 0.230 kg and the speed of the object is 1.80 m/s

73. ## English

I have an essay i need to write and the questions i need to answer are "Why do you think Romeo and Juliet remains so popular?"and "What is it about the characters of Romeo and Juliet that makes it so easy for young people to relate to them?" I need two

74. ## pre-algebra

a 50-pound bag of grass seed sells for 292.50. find the unit price of grass seed

75. ## Health

The muscles located in the leg that move the ankle and foot are divided into ________. A. Anterior, posterior, and lateral compartments B. Oblique, lateral, and posterior compartments C. Horizontal, vertical, and diagonal compartments D. None of the above

76. ## geography

Why are some areas more affected by earthquakes than others?

77. ## Physics

A ball of mass 0.60 kg is fired with velocity 100 m/s into the barrel of a spring gun of mass 2.4 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to

78. ## math

a boy standing on a vertical cliff 50m high is looking down an angle of depression of 20 degree at a car. how far is the car from the base of the cliff?

79. ## Physics

I have a blue liquid with density 1040 +- 20 yellow liquid 1190 +- 60, (dark)red liquid 1170 +- 30 pink/light red liquid 1100 +- 60 my task is to find out what liquids are they all of the densities were calculated in class(we were doing an experiment).

80. ## math

tony walked 3.5 miles in 7/8 of an hour. at this rate, how many miles can tony walk in one hour?

81. ## physics

a 0.12 kg is sitting on a record with a diameter of 0.30 meters. the record completes one turn on 0.40 seconds

82. ## physics

a 0.12 kg is sitting on a record with a diameter of 0.30 meters. the record completes one turn on 0.40 seconds

83. ## Trigonometry

Find these quantities: i. Find all angles in the unit circle with secx=2.1754 . Give your answers in radians to 4 decimal places. ii. Find sec(arcsin(2x))

84. ## Calculus

d/dx[(3x^2+2•sqrt of x)/x]=? Is it 3-(1/(x•sqrt of x))?

85. ## Math

What is the easiest way to solve an algebraic equation?

86. ## algebra

Suppose y varies directly with x. Write an equation relating x and y. 645-09-05-00-00_files/i0130000.jpg a. y = 6x c. y = 7x b. y = x d. y = − x

87. ## Math

Susan's grandmother gave her 25 dollars and plans to save 2.50 dollars each week but instead of Susan spending the 25 she decides to deposit the 25 dollars in a bank. How will the line change if she deposits 25 from her grandmother but decided she can only

88. ## English

Hermit crabs rely on a supply of empty mollusk shells that they inhabit. What is the function of the relative pronoun in the clause 'That they inhabit'? A. Possessive B. Object of a preposition C. Direct object D. Subject I think it is either direct object

89. ## geometry

A total solar eclipse occurs when the moon passes between the earth and the sun, and the darkest shadow cast by the moon, called the umbra, hits the surface of the earth. If the umbra does not hit the surface, as shown in the following figure, then a total

90. ## Math

If Manuel spends 30 dollars a week when he has \$1090, how many will he have after 11 weeks? He will have \$760 When will he be out of money??

91. ## math

if the difference in the degree measure of an interior and exterior angle of a regular polygon is 100 degree,how many sides doesthe poygon have??

92. ## physics

An 11.8 g bullet leaves the muzzle of a rifle with a speed of 578.5 m/s. What constant force is exerted on the bullet while it is traveling down the 0.6 m length of the barrel of the rifle? Answer in units of N

93. ## physics

An artillery shell is fired at an angle of 86◦ above the horizontal ground with an initial speed of 1630 m/s. The acceleration of gravity is 9.8 m/s 2 . Find the total time of flight of the shell, neglecting air resistance. Answer in units of min

94. ## nqwiliso s.s.s.

three forces act on a body.forceof 30N and 25N act to east and a force of 40N acts to the west.draw a fully labelled scale vector diagram to find the magnitude and direction resultant force use 1 mm : 1N.

7x-9=4x

96. ## MATH

prove the identity: cos(x)*csc(x)*tan(x)=1

97. ## biology

Colour blindness is a recessive disorder. If a colour blind male is crossed with a normal female, what are the possible genotypes and phenotypes of the offspring

98. ## L/A

How do you form the perfect tense of a verb? A: Use the helping verb will and the base form of the word? B: Use a form of the verb be and the past participle of the verb? C: Use a form of the verb have and the present participle of the verb? D: Use a form

99. ## Physics

An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1200 kg and a speed of 25 km/h in the positive x direction before the collision. The Camaro has a mass of 1700 kg and was traveling in the positive y

100. ## Physics

Your friend Josh tells you that he spends less on gas in the winter than in the summer. He also says that he has to fill up his tank less often in the winter. (a) Which of the following are possible hypotheses that can be formed from Josh’s

101. ## L/A

Which of the following sentences contains a verb future perfect tense? A: Andy is going to walk home with Beth every afternoon. B: Andy has been walking home with Beth every afternoon. C: Andy will walk home with Beth every day next week. D: By tomorrow,

102. ## Algebra

What are the coordinates of the points where f(x)=x^3-x^2+x+1 and g(x)=x^3+x^2+x-1 intersect?

103. ## Algebra

Find all points (x,y) that are 13 units away from the point (2,7) and that lie on the line x-2y=10.

104. ## physics

For the ballistic missile aimed to achieve the maximum range of 15500 km, what is the maximum altitude reached in the trajectory? Answer in units of km

105. ## Chemistry

A reaction: A(aq)+B(aq)C(aq) has a standard free-energy change of –4.69 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively? I

106. ## math

is a negative times a negative ALWAYS positive? or can it be negative as well?

107. ## Math

What is 408,032,009 in expanded form

108. ## Algebra 2

(192x^2y+72x^3)-(24rxy-9rx^2) I need help factoring completely in groups and can you please show all your work thank you

109. ## physics

A hiker begins a trip by first walking 25.0 km southeast from her base camp. On the 2nd day, she walks 40.0 km in a direction 600 north of east, at which point she discovers a forest rangers tower. Find the magnitude and direction of displacement from base

110. ## Math

to find 6x8, can I use the facts for 5x4 and 1x4

I am so confused on how to set this up then solve please help. For a rectangle with area 100 to have the smallest perimeter what divisions should it have? Would I use 2L+2W=P, A=xy, or what. I know it is probably something really simple and I am just not

112. ## Hurricane Project for Physics Class

1) Please describe the typical path(s) for hurricanes. Is this part of the pattern of convection?

113. ## Math

Joy knits a square blanket that has an area of 1,500 square inches. What is the approximate length of each side of the blanket? A. 16 B. 27 C. 39 D. 42 _____________________________________ As an estimate for √47 is between ___? A. 4 and 5 B. 5 and 6 C.

114. ## physics

The coldest and hottest temperatures ever recorded in the United States are -83°F and 135°F, respectively. What is the speed of sound in air at each temperature?

115. ## 2 Math Questions

1) What do you do to check whether a number is rational or irrational? Use an example of a rational and an irrational number. 2) How does finding the square root [√] of a number compare to finding the cube root [^3√] of a number? Use the number 64 in

116. ## Science HELP

A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown in the table below. Liquid reactant A = 10 g Liquid reactant B = 17 g Beaker + solid product= 32 g What is the mass of the beaker? A. 5 g B. 10 g C. 15

117. ## physics

A quarterback throws the football to a stationary receiver who is 22.7m down the field. the football is thrown at an initial angle of 39 degrees to the ground. The acceleration of gravity is 9.81m/s^2. a) at what initial speed must the quarterback throw

118. ## Science

There are two forces acting on a box of golf balls, F1 and F2. The mass of the box is 0.750 kg. When the forces act in the same direction, they cause an acceleration of 0.450 m/s2. When they oppose one another, the box accelerates at 0.240 m/s2 in the

119. ## Math

Use the properties of logarithms to rewrite and simplify the logarithmic expression. 1.) log(9/300) 2.) log2(4^2 x 3^4)

120. ## Physics

Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 2.40 m. Two of the spheres have a mass of 3.40 kg each. The third sphere (mass unknown) is released from rest. Considering only the

121. ## Algebra help

Your cost c to buy w pounds of walnuts at \$6/Ib represented by c = 6w A truck originally held 24 chairs. You remove 2 chairs at a time. The number of chairs n remaining after you make t trips is represented by n= 24-2t. The volume V remaining in a 243-ft^3

122. ## STATISTICS

Suppose that, in order to estimate the proportion of students who wear glasses, a sample of 100 students was collected and showed that 20 of the students in the sample wore glasses. A confidence interval for the population proportion of students who wear

123. ## algebra

The sum of a number and its reciprocal is 29/10 Find the numbers?

124. ## physics

A 244 g particle is released from rest at point A inside a smooth hemispherical bowl of ra- dius 21.7 cm, as shown in the figure The acceleration of gravity if 9.81 m/s2 .

125. ## Math

How many square units are in the area of the triangle whose vertices are the x and y intercepts of the cuure y=(x-3)^2(x+2)?

126. ## physical science

What is the kinetic energy of a 0.02 kg bullet that is traveling 300 m/s? Express your answer in joules.

127. ## machnics

The equations of motion are derived from the indefinite integral of acceleration.verify

128. ## physics

The half-life of Th(227) is 18.72 days. It decays by alfa emission to Ra(223), an alfa emitter whose half-life is 11.43 days. A particular sample contains 10^6 [10E(+6)] atoms of Th(227) and no Ra(223) at time t=0. a) How many atoms of each type will be in

129. ## Calculus URGENT

Find the number c that satisfies the conclusion of the Mean Value Theorem on the given interval. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = √x [0, 9] c=? I've tried quite a few different answers

130. ## physical science

Calculate the kinetic or potential energy in joules for each of the following situations: A. A 2.5 kg book is held 2.0 m above the ground. B. A 15 g snowball is moving through the air at 3.5 m/s. C. A 35 kg child is sitting at the top of a slide that is

131. ## another question

APRIL 25. Even the morning air is sultry today. I would have fished for my breakfast last night before sunset, but I knew that it would surely spoil before morning. Drinking my water warm has taken some getting used to. It’s funny how we take certain

132. ## math

A dealer bought some radios for a total of \$1,200. She gave away 6 radios as gifts, sold each of the rest for \$10 more than she paid for each radio, and broke even. How many radios did she buy?

133. ## Health and Physical Education 8 - It's urgent!

Please check my answers because I need to do good at this. 1. When consuming fats the healthiest choice is foods high in? A. saturated fats B. unsaturated fats * C. trans fat D. cholesterol 2. The body's main energy source should come from what essential

134. ## statistics

Membership in Mensa requires an IQ score above 131.5. Nine candidates take an IQ test and their summary scores indicate that their mean IQ score is 133. IQ scores are normally distributed and have a mean of 100 and a standard deviation of 15. If nine

135. ## physical science

A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4.25 m/s. But 3.2 s later, at the bottom of the slope it's speed is 22.75 m/s what is its average acceleration

136. ## math

A repairman purchased several furnace-blower motors for a total cost of \$150. If his cost per motor had been \$5 less, he could have purchased 1 additional motor. How many motors did he buy at the regular rate?

137. ## Physics

A. You drag a suitcase of mass 19 kg with a force of F at an angle 41.3 degrees with respect to the horizontal along a surface with kinetic coefficient of friction 0.54. The acceleration due to gravity is 9.8 m/s^2. What is the normal force on the

138. ## physical science

A river does 6,500 j of work on a water wheel every second. The wheel efficiency is 12%. A. How much work in joules can the axle of the wheel do? B. What is the power output of the wheel in 1 s?

139. ## Literature

"Write a monologue revealing the unspoken thoughts and feelings of one of the characters in "Everything Stuck to Him." Use the personal pronoun "I." Choose one of the following scenes to step into the character's mind: a) the girl sitting up alone with the

140. ## Intermediate Algebra

Explain why (-9)1/2 is not a real number but -9 1/2 is a real number.

141. ## physics

'a 48 kg projectile is fired at an angle of 30 degree above the horizontal with an initial speed of 1.34 x10^2m/s fro the top of a cliff 150m above level ground, where the ground is taken to be y=0 what is the inital total mechanical energy of the

142. ## Chemistry

A mouse is placed in a sealed chamber with air at 755.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2 and H2O produced by the mouse. The gas volume in this chamber is measured to be exactly 1.70 L, the temperature is held constant

143. ## physics

48 kg projectile is fired at an angle of 30 degree above the horizontal with an initial speed of 1.34 x10^2m/s fro the top of a cliff 150m above level ground, where the ground is taken to be y=0 what is the inital total mechanical energy of the

144. ## Earth Science I suppose

What does the pattern of convection have to do with the typical path of a hurricane?

145. ## physical science

John is using a pulley to lift the sail on his sailboat. The sail weighs 150 N, and he must lift it 4.0 m. A. How much work must be done on the sail? B. If the pulley is 50% efficient, how much work must John do on the rope to lift the sail?

146. ## criminology

Is it possible to create a method of capital punishment that would actually deter murder

147. ## Calculus

Match the rule with the title: ____ 3. d/dx [f(x)/g(x) ]=(g(x) f^' (x)-f(x) g^' (x))/[g(x)]^2 ____ 4. d/dx [f(g(x))]=f^' (g(x))∙g'(x) ____ 5. d/dx [f(x)∙g(x)]= f(x) g^' (x)+g(x) f^' (x) ____ 6.d/dx [x]=1 ____ 7. d/dx [f(x)+g(x)]= f^' (x)+g^' (x) or

148. ## Math

The number of megapixels in a digital camera is one of the most important factors in determining picture quality. But, do digital cameras with more megapixels cost more? The following data show the number of megapixels and the price (\$) for 10 digital

149. ## chemical calculations

Brine from a first tank runs into a second tank at 2 gallons per minute and brine from the second tank runs into the first at 1 gallon per minute.Initially,there are 10 gallons of brine containing 20 lb of salt in the first tank and 10 gallons of fresh

150. ## Calculus-Newton Method Approximation

1/ 3(x^3) + 1/2(x^2) + 1 = 0, x1 = −3 newtons way to the 4th decimal

151. ## composition II

Is it possible to create a method of capital punishment that would actually deter murder? For example, by televising executions?

152. ## French

Please check these sentences for grammar. 1. Adorez-vous faire les magasins? 2. Est-ce que tu préféres lire à la bibliotheque ou écouter de la musique? 3. Est-ce tu ne préféres pas la pomme avec le petit dejeuner? 4. Est-ce tu n'aime pas les pommes?

153. ## Math

x^2+6x+4 Complete the square Find the turning point of the equation

Phisic

155. ## English

1. She has glasses whose arms are broken. 2. She is holding glasses whose arms are broken. 3. She is wearing glasses whose arms are broken. --------------------- Does #1 mean #2 or #3?

156. ## math

Kelly has 4 times as many songs on her music player as Lou. Tiffany has 6 times as many songs on her music player as Lou. Altogether, they have 682 songs on their music players. How many songs does Kelly have. Please teach me the steps on how to do it I`m

157. ## Algebra/Math

The graphs of a function f(x)=3x+b and its inverse function f^-1(x) intersect at the point (-3,a). Given that b and a are both integers, what is the value of a?

158. ## Object Oriented Programming Concept Using C++

Q. Use following relationship as sides in case of rectangle and base and height in case of triangle: Area of Rectangle = X* Y Area of Triangle =1/2 * X* Y

159. ## physics

A 36-N force, parallel to the incline, is required to push a certain crate at a velocity of 9.1 up a frictionless incline that is 45° above the horizontal. The mass of the crate is:

160. ## physics

A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle θ = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is μ = 0.64.

161. ## College physics

In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is T(in) = 20 degrees celcius and the temperature outside is T(out) = 0 degrees celcius. The walls have fiberglass insulation, which dominates the heat

162. ## Physics

You are holding the axle of a bicycle wheel with radius 35 cm and mass 1 kg. You get the wheel spinning at a rate of 55 rpm and then stop it by pressing the tire against the pavement. You notice that it takes 2.0 s for the wheel to come to a complete stop.

163. ## math

The temperature x in °f is related to the temperature in °c by the relation c(x) = 5/9 (x-32).What is the slope of graph in (b)?

164. ## Math HELP!

Mac's farm has a total of 18 horses and 27 cows. What is the ratio of horses to cows in simplest form? A. 6/9 B. 18/27 C. 2/3 D. 3/2 Is the answer C? Thank you

165. ## math

Hi! If 1/8=1 foot on a scale and the deck is 2 3/8 inch. How many feet will it be if 1/8 inch is equal to 1 foot 3/8 divided by 1/8=3ft 2 in divided by 1/8=

166. ## Calculus

Can someone please walk me through the steps, I am just not sure what to do next. thanks Solve the optimization problem. Minimize F = x^2 + y^2 subject to xy^2 = 16 I took the derivative F = 2x + 2Y but I don't know where to go from here.

167. ## la

At the end of her aunt's story in “The Story-Teller," the older girl asks whether the girl in the story would have been rescued even if she had not been good. what does she seem to think is the theme of her aunts story? what detail in the aunt's story

168. ## Physics

A spherical bowling ball with mass m = 3.2 kg and radius R = 0.107 m is thrown down the lane with an initial speed of v = 8.6 m/s. The coefficient of kinetic friction between the sliding ball and the ground is μ = 0.34. Once the ball begins to roll

169. ## Calculus

Please check, if there is something wrong please explain what I did wrong. Thank you! Calculate the d^2y/dx^2. y= e^-x + e^x y' = e^x - e^-x y'' = e^x + e^-x Find the x-coordinace of all critical points of the given function. determine whether each

170. ## Algebra

a grocer buys cases of almonds and walnuts. Almonds are packaged 20 bags per case . The grocer pays \$30 per case of almonds and makes a profit of \$17. Walnuts are packaged 24 bags per case. The grocer pays \$26 per case of walnuts and makes a profit of \$15

171. ## Math HELP!

A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students? A. 12:15 B. 15:12 C. 27:12 D. 12:27 Is the answer A?

172. ## math

A carpenter who is installing cabinets uses thin pieces of material called shims to fill gaps. The carpenter uses four shims to fill a gap that is 1.2 centimeters wide. Three of the shims are 0.75 centimeter, 0.125 centimeter, and 0.09 centimeter wide.

173. ## Chemistry

Calculate the percent deviation from ideal behavior for 1.03 mol of CO2 gas in a 1.10 L container at 35.0°C, which exerts a pressure of 20.3 atm.

174. ## physics

the mass of the sled as its two riders is 350kg he magnitude of the centripetal force that acts on the on the sled if the radius is 33m or 24m

175. ## Math

Ursula wrote the sum 5.815 + 6.021 as a sum of two mixed numbers. A. What sum did she write? B. Compare the sum of the mixed numbers to the sum of the decimals.

176. ## geometry

construct a triangle ABC where AB=8.5 and BC=6.2.

177. ## physics

A motorist has to travel 3.50 km in a city with an average speed not exceeding 25 km/h. If the average speed increases to 40 km/h, find the time he will gain in his journey.

178. ## Physics

1) Please describe the typical path(s) for hurricanes. Is this part of the pattern of convection?

179. ## physics

A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +1.2. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror?

180. ## physics

A motorist has to travel 3.50 km in a city with an average speed not exceeding 25 km/h. If the average speed increases to 40 km/h, fine the time he will gain in his journey

I do not have any Idea how to set this up. Please walk me through the steps. A.) If a customer buys x copies then he or she pays \$500 sqrt x. it cost the company \$10,000 to develop the program and \$2 to manufacture each copy. If a single customer were to

182. ## physics

A motorist has to travel 3.50 km in a city with an average speed not exceeding to 25 km/h . If the average speed increases to 40 km/h. What is time he will gain from his journey

183. ## Math Help

Hi! I'm really lost on how to do this. Does anyone know how to solve this? Thanks! :) Condesne the expression to the logarithm of a single quanity. 4(lnz+ln(z+5)]-2ln(z-5)

184. ## algebra

Give an equation of a line in slope intercept form that would be parallel to the equation y=3x+5 and passes through (0,3).

185. ## Physics

1) Please describe the structure of a hurricane,and how they work. Include a discussion of how energy is transferred from the warm ocean water up to the sky.

186. ## Math HELP!

The cost of your favorite lemonade is \$3.84 for 3 gallons. Write this as a unit rate. A. \$3.84/1 gallon B. \$1.28/1 gallon C. 1 gallon/\$1.28 D. \$1.45/1 gallon Is the answer b?

187. ## Algebra

What are the coordinates of the points where f(x)=x^3-x^2+x+1 and g(x)=x^3+x^2+x-1 intersect?

188. ## Physics

1) What are the possible effects of a warming climate and rising sea levels on the number, intensity, and effects of hurricanes?

189. ## science

are starches and glucose all types of carbohydrates?

190. ## Algebra

Let a and b be real numbers, where a

191. ## physics

A 0.027 kg golf ball moving at 16.8 m/s crashes through the window of a house in 4.6 × 10−4 s. After the crash, the ball contin- ues in the same direction with a speed of 12.0 m/s. Assuming the force exerted on the ball by the window was constant, what

192. ## physics

A jet needs to reach a takeoff speed of 75.0 m/s. If the runway is 1625 meters long, what minimum acceleration is needed? How much time will it take to reach the takeoff speed

193. ## math

natasha had 7/8 gallon of paint. her brother ivan took 1/4 gallon to paint his model boat. natasha needs at least 1/2 gallon to paint her bookshelf. did ivan leave her enough paint?

194. ## Trigonometry

An airplane flew 300 miles at a bearing of N65°E from airport A to airport B. The plane then flew at a bearing of S38°E to airport C. Find the distance from A to C if the bearing from airport A to airport C is S60°E.

195. ## Math HELP!

Find the unit rate. Rounf to the nearest tenth, if necassary. 344 miles is 11 hours A. 344 miles/hour B. 3,784 miles/hour C. 0.03 mile/hour D. 31.27 miles/hour Is the answer a?

196. ## Math

Groups in math class have 4 green marbles, 6 yellow marbles, and 10 black marbles. Each group pulls out a marble, records it, and then replaces it 50 times. The class complies its data. how many times can you expect to pull out a green marble with 1000

197. ## t

A 15.7-L tank is filled with H2 to a pressure of 237 atm. How many balloons (each 2.00 L) can be inflated to a pressure of 1.00 atm from the tank? Assume that there is no temperature change and that the tank cannot be emptied below 1.00 atm pressure.

198. ## chemistry

What does a slash (/) mean in chemistry?

199. ## Programming (Integer generator)

Write a program that accepts two numeric values from the user and displays all integers between these values. Your program will Accept a starting value Accept an ending value Display all the integers (inclusive) between those two values. Your program

200. ## Algebra HELP!

Ryan is building matchstick square sequences, as shown ( first figure used 4, second figure used 7, third figure used 10, and the forth figure used 13). He used 599 matchsticks to form the last two figures in his sequences. How many matchsticks did he use

201. ## science

is a complex sugar an example of a starch? is a simple sugar an example of glucose?

202. ## Calculus

Find the derivatives of the following 18. y=〖cos〗^4 x^4 ANSWER: tanx2 19. y= sinx/(1+ 〖cos〗^2 x) ANSWER: 3sinx 20. y=sinx(sinx+cosx) ANSWER: sinx Can you check my answers?

203. ## CAL

The _____________ of a function is a formula for the slope of the tangent line to that function at any point x. When the function is defined as f(x), the derivative will be written as __________or ________. When the function is written in the form of y =,

204. ## Language arts Help

When MacNeil says that much of television news is "machine gunning with scraps," he means that A. Television news covers too much violent crime. B. Television news stories are too short and fast. C. Television news covers war too much. D. Television news

205. ## wj keenan

both insulators and conductors can be charged by?

206. ## Math

Adan used the three fractions to make a circle graph colored each a different color. What fraction of the graph is not colored?Explein your answer 2/5 ,1/6 ,and 1/3. Can somebody help me!!!!

207. ## Math

Luka is eating crackers. Each serving has 1.6 grams of fat. She ate 0.75 serving of crackers at lunch. She is now eating 1.5 servings of crackers as a snack. How many grams of fat did Luka eat all together? Explain how you solved the problem

208. ## Physics

Explain how you would determine how much error there is between a vector addition and the real results.

209. ## physics

A cannon rests on the ground at 40 degree angle it fires a ball at 200 m/s how high is the top of trajectory? At what impact speed does it rest? How far away does it land?

210. ## Language arts Help

Something that is trival is A. Insightful B. Important C. Unusual D. Insignificant Is the the answer D?

211. ## science

is a starch a complex carboydrate

212. ## art

What is aesthetics? exploring fundamental questions such as "What is art?" and "What is beauty?" determining how an artwork is organized, using the principles of design as a guide describing a work of art based on its period, civilization, and style i

214. ## Science

The letters that represent the different forms of a gene are called...? Phenotypes Traits Alleles Dominants. I think Dominant is out of the answer. I'm guessing the answer is Alleles.

215. ## MATH

1: The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low temperature drop from Tuesday to Wednesday? 2) The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many

216. ## physics

How high must your roof be to fire 1.2km if it fires at 450 m/s muzzle velocity?

217. ## Math

I have a peice of lumber that is 18 feet long can 18 prices of lumber make 5 shelves

218. ## Calculus

fence 3 feet tall runs parallel to a tall building at a distance of 7 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?

219. ## algebra

Create your own polynomial with a degree greater than 2.find the zeros of the function.

220. ## English

Going over my work before I have to submit. I have one doubt before I do it. The sentence is--- If you hurry you will be able to keep your appointment. I say two independent clauses with no comma, but If you hurry sounds like an order ofexpression to set

221. ## MATH

A biologist is recording the loss of fish in a pond. She notes the number of fish, f, in the pond on June 1. On July 1 there were 63 fish in the pond, which is 52 fewer fish that were in the pond on June 1. Which equation represents this situation?

222. ## physics

find displacement 4 vectors (1) 40 meters @10, (2) 30 meters @ 190 and (1)50 meters @ 280

223. ## chemistry

Draw one of the Lewis structure of the N2O5. In each case one oxygen bridges the nitrogens (N-O-N single bond) and 2 other oxygens are bonded to each N. How many equivalent resonance structures are there that satisfy the octet rule and where O makes at

224. ## art

How were the Roman's able to make arches and domes? They created a mold for the clay and it hardened in the sun. They carved it out of marble. They created the revolutionary building material, concrete.

Ryan is building matchstick square sequences, as shown ( first one used 4, second one used 7, third one used 10, and the forth one used 13). He used 599 matchsticks to form the last two figures in his sequences. How many matchsticks did he use in each of

i think i have my answer but im not sure heres the question The stranger "preferred to keep his hat and coat on." "His gloved hands were clasped behind him..." He "turned his face away" from Mrs. Hall. He "wore big blue spectacles with sidelights, and had

227. ## Chemistry

Which direct measurement would provide evidence that the energy of a substance had changed? A. temperature B. heat C. mass D. volume I think the answer is a or b

228. ## Health

Aspects of personality, temperament, and behaviors can make children more susceptible to developing alcohol use disorders such as, ________.

Ten years from now Alex's age will be 3 times her present age. Find Alex's age now.

230. ## Chemistry (EMERGENCY)

drive.google.com /viewerng/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxnaHNpYmNoZW1pc3RyeXxneDoxMmEwMTFhYWEwNWNiYjg0 #1-3 must be completed for homework, but my teacher failed to thoroughly explain the material to my class, and I have no idea what to do.

231. ## MATH

1: The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many degrees did the low temperature drop from Tuesday to Wednesday? 2) The table shows the low outside temperatures for Monday, Tuesday, and Wednesday. By how many

232. ## Math help!

Miriam is four years older than Ricardo. Ten years ago Miriam was 3 times as old as Ricardo was then. A: How old are they now? B: Determine whether your answer is correct by checking that it satisfies the conditions of the problem.

233. ## college math

1. A farmer has 1000 acres of land on which corn, wheat, or soybeans can be grown. He also knows that each acre of corn requires 5 days of labor and yields a profit of \$20. Each acre of wheat requires 9 days of labor and yields a profit of \$40. Each acre

234. ## Math

What is the probability that a randomly thrown dart hits a shaded region, given that the dart lands within the rectangle? All of the circles are congruent, and the diameter of each circle is 6 cm.

235. ## math

1. A farmer has 1000 acres of land on which corn, wheat, or soybeans can be grown. He also knows that each acre of corn requires 5 days of labor and yields a profit of \$20. Each acre of wheat requires 9 days of labor and yields a profit of \$40. Each acre

The family was poor. It was "poor but proud." The confused boy grew up thinking one should be proud of being poor. One of the in-laws slipped around occasionally and made liquor. He had plenty of cash, did not read books, and was tolerated but not admired.

237. ## Math

the commission on a house that sold for \$28,000 was \$1,140, what was the rate of commission paid by the broker?

238. ## physics

Daneil is bouncing on a trampoline. After a certain bounce he leaves the ground traveling at a speed of 2.54 m/s. How far into the air does he go? I need helllpppp I'm so bad a physics, I need to know what formula to use..

239. ## Math- Had Sub teacher, need help

My professor won't be back for a week and we have an exam tomorrow. The sub was going over a problem towards this question but I barely understood her. Tried to speak to her after class but she was very impatient. I need help please. The manager of a large

his king had two hundred wives, but none of them had borne a son to him. His subjects, seeing that he was becoming an old man, begged him to marry one of the spider's daughters, as they always had plenty of children. But when the king saw the spider's

241. ## physics

A 15 kg rock is horizontally from very high cliff at a speed of 65m/s. what is the speed of the rock after it has fallen a vertical distance of 35m?

242. ## Organice Chem

Could you use acetone as a solvent to recrystallize acetanilide? Justify

243. ## Math

What 3 positive integers satisfy a^3+b^3=c^3 ?

244. ## Math

Use the simplex meth to solve the linear programming problem Maximize z = 8x1 + 2x2 Subject to: 4x1 + 3x2 < 11 X1 + 4x2 < 7 With x1 > 0, x2> 0

245. ## MATH

FIND THE UNIT RATE ROUND TO THE NEAREST HUNDREDTH ?TRAVEL 250 MIN IN 5 HOUR

246. ## math

tickets to a play cost 3 dollars a child and 5 for adults. theater wants at least 1500 in sales. find intercept and describe what each one represents?

247. ## English

I need help on sentence check 2 chapter13

248. ## language arts

according to harriet tubman, what was thomas garrett's role in the underground railroad

249. ## Chemistry

If 10 cm3 of ethanol is added to 10 cm3 of water, does the initial temperature of water change upon addition of ethanol?

250. ## matg

Cobalt-60 has a half-life of about 5 years. How many grams of a 300 g sample will remain after 20 years? (Points : 1)

251. ## SS

What are some features of Canadian culture that are different from American culture?

252. ## Static Equilibrium

This has been causing me some pain. An 89.03 kg person is half way up a uniform ladder of length 3.453 m and mass 22.75 kg that is leaning against a wall. The angle between the ladder and the wall is θ. The coefficient of static friction between the

253. ## Chemistry

What is the molarity of a 2.50 x 102 cm3 solution containing 560.0 g of C6H12O6?

254. ## Physics

Can someone, please help me out with this question. A uniform rectangular 91.21 kg refrigerator with height h = 2.069 m and width w = 1.153 m is pushed at a constant velocity across a level floor. The refrigerator is pushed in the horizontal direction

255. ## math

a football player attempts a field goal from a distance of 52 yards. The ball reaches a maxium height of 9 yrds and lands 8 yards behind the uprights. If the uprights are 3 yards high. algebraically determine if the field goal was successful

-9-(12-3x)

257. ## english

Anxiety is to test as procrastination is to

258. ## college statistics

the math SAT scores for all students who applied to the school of engineering are normally distributed with M=629 and standard deviation of 60. the school of engineering has decided to accept those students whose scores fall in the top 15%. what is th

259. ## Science

A scientist is studying a plant species in which the flower color genes are codominant. The scientist crosses a plant with red flowers and a plant with white flowers. The offspring will most likely have A.red flowers B.white flowers C.pink flowers D.red

260. ## Math

Use the properties of logarithms to rewrite and simplify the logarithmic expression. 1.) log(9/300) 2.) log2(4^2 x 3^4)

261. ## physics

A 1.2 lead ball is launched off a cliff top at 16 m/s Determine the balls kinetic energy at position P. Ignore friction

262. ## math

Gina wants to use a board that is 8 feet long to make a ramp. She wants the ramp to be 6 feet wide. Her design is shown below. Which is closest to h, the height in feet Gina should use for the ramp according to her design? a. 10.0 b. 5.3 c. 2.0 d. 1.3

asked by somebody help i am new
263. ## Algebra

A grocer buys cases of almonds and walnuts. Almonds are packaged 20 bags per case. The grocer pays \$30 per case of almonds and makes a profit of \$17 per case. Walnuts are packaged 24 bags per case. The grocer pays \$26 per case of walnuts and makes a profit

264. ## physics

if a load 1kg streches a cordby 1.2cm.what is the force constantof the cord?