# Questions Asked onSeptember 20, 2011

1. ## Math

Jake says that adding 0 does not change a sum. Is he correct? explain.

2. ## Geometry

A 30-foot cable is suspended between the tops of two 20-foot poles on level ground. The lowest point of the cable is 5 feet above the ground. What is the distance between the two poles?

3. ## economics

A profit-maximizing firm in a competitive market is currently producing 100 units of output. It has average revenue so \$10, average total cost of \$8 and fixed cost of \$200. a. what is the profit? b. what is the marginal cost? c. what is its average

4. ## math

the melt in your mouth chocolate factory sells three times as many mints as it sells almond bars.it sells half as many almond bars as it sells caramels.if it sells 3,750 cases of mints each month,how many caramels does it sell in one month

5. ## Algebra 1

A measurement is given. Find the minimum and maximum possible measurement. A doctor measures a patient's weight as 162 lb to the nearest pound.

6. ## More Critical Thinking

Do these passages contain ought imperatives? 1) Toby, never throw a pen at your sister! You could put an eye out! 2) Never raise your hands to your kids. It leaves your groin unprotected. (George Carlin)

7. ## Physics

a rocket is launched at an angle of 53 degrees above the horizontal with an initial speed of 75m/s. It moves for 25 seconds along its line of motion with an overall acceleration of 25 m/s^2. What is its maximum height?

8. ## algebra

one-half of a number, increased by 9, is less than 33

9. ## Math

How would I shade 0.05 in on a grid?

10. ## chemistry

Consider the following unbalanced reaction: Fe2O3 (s) + CO (g) --> Fe (s) + CO2 (g) How many moles of carbon dioxide are produced per mole of iron (III) oxide reacted.

11. ## Physics

The head of a hammer is loose and you wish to tighten it by banging it against the top of a workbench. Why is it better to hold the hammer with the handle down, as shown below, rather than with the head down? Explain in terms of inertia.

12. ## donnelly

what is the chemical name of NaKC8H4O4

13. ## Algebra 1

Emily wants to buy turquoise stones on her trip to New MExico to give to at least 4 of her friends. The gift shop sells stones for either \$4 or \$6 per stone. Emily has no more than \$30. I have no clue how to work this out!!!

14. ## math

the deck in hopes's backyard is round. it has 5 posts evently spaced around the edge to support a trellis. for her birthday party, she wants to connect each post to all the others post with crepe-paper streamers. how many streamers will she need?

15. ## Physics

A lightning bug flies at a velocity of 0.25 m/s due east toward another lightning bug seen off in the distance. A light easterly breeze on the bug at a velocity of 0.25 m/s. What is the resultant velocity of the lightning bug? I drew the .25 east but would

16. ## math

a boy spent 2/5 of his money on sweets and 1/3 on records. what fraction of his money did he spent? what fraction of his money did he have remaining.

17. ## math

write each addition vertically.decide which new groups you will make.then,add to see if you were correct. 256+1273___________ a new ten?____________ a new hundred?_________ a new thousand?____________ need answers and please explain

18. ## english

1. What roles do the adults or older figures play in the lives of the various narrators? Select a figure from each of the four memoirs and write one sentence answering the question for each memoir.

19. ## Geometry

Geometric Proofs.... Write a justification for each step Given: AB = EF, B is the midpoint of Line AC and E is the midpoint of Line DF. 1. B is the midpoint of Line AC and E is the midpoint of Line DF. 2. Line AB is congruent to Line BC and Line DE is

20. ## Mathematics

Out of 18 times at bat, Jen got a hit 5/6 of the time and Kasa got a hit 8/9 of the time. 1) Who got more hits? 2) How many more?

21. ## math

write a negation of the statement...not all people like football

22. ## chem

how is the rms speed of n2 molecules in a gas sample change by mixing with a sample of an at the same temperature

23. ## english

The elderly patient's deep venous thrombosis was treatee with Coumadin. what is simple subject

24. ## chemistry

A sample of aluminum sulfate 18-hydrate, Al2(SO4)3 · 18 H2O, containing 157.0 mg is dissolved in 1.000 L of solution. Calculate (a) molarity of Al2(SO4)3 (b) molarity of SO42- (c) molality of Al2(SO4)3, assuming that the density of the solution is 1.00

25. ## algebra

A motorboat can maintain a constant speed of 24 mph relative to the water. The boat makes a trip upstream to a certain point in 62 minutes. the return trip takes 34 minutes. What is the speed of the current?

26. ## science

determine the mass of a ball with a velocity of 35.1 m/s and a wavelength of 8.92 x 10^-34

A piece of copper contains 3.6 x 10^8 atoms. What is the volume of the sample in units of liters? i have no idea how to start this. Please help thank you!!!

28. ## finance

You borrow \$185,000 to buy a house. The mortgage rate is 6.5 percent and the loan period is 32 years. Payments are made monthly. If you pay the mortgage according to the loan agreement, how much total interest will you pay?

According to the label on the skim milk, 1 cup (244 mL) of skim milk contains 9.00 g pf protein. Assuming the density of the skim milk is 1.10 g/mL, what should the mass percent of protein in milk be?

In our business class, we have to come up with a business and make it different from other competitor. My business is desktop publishing ( Creating brochures , advertisement, newspaper, and business card) and I can't think of way to make the business

31. ## Physics

We saw in Example 5.7 how a centrifuge can be used to separate cells from a liquid. To increase the speed at which objects can be separated from solution, it is useful to make the centrifuge’s speed as large as possible. If you want to design a

1.If I had a picture of a family having fun in the snow-I'm not sure how to say that-- a.La familia divertirse en la nieve b.La familia se divertir en la nieve c.La familia diviertese en la nieve d.La familia se divierte en la nieve I think it is (a) 2. If

33. ## Calculus

For the Arithmetic sequence, determine the value of t1, and d. An explicit formula for the general term. And T20. 7/4, 1, 1/4, -1/2 I don't know how to do this the fraction way, but by doing this the decimal way, the common difference I got is -0.75. T1

34. ## Chemistry

What are the products for the reaction of Sodium hydrogen phosphate with nickel II nitrate Ni2HPO4 + Ni(NO3)2 -->

35. ## physics

Calculate the amount work done on 60 N of force is used to move an object a distance of 4.0 meters

36. ## Physics

The head of a hammer is loose and you wish to tighten it by banging it against the top of a workbench. Why is it better to hold the hammer with the handle down, as shown below, rather than with the head down? Explain in terms of inertia.

37. ## Physics

Two identical point charges are fixed to diagonally opposite corners of a square that is 1.5 m on a side. Each charge is +2.0 µC. How much work is done by the electric force as one of the charges moves to an empty corner? I have W(fe)= -EPE=-q[V(f)-V(i)].

38. ## ENGLISH 111

In the following sentence identify the appositive or appositive phrase and the noun or pronoun defined by the appositive. We often contribute to the Salvation Army, one of our favorite charities.

39. ## Critical Thinking

I need to determine if these sentences are statements or not. 1)Abraham Lincoln was the first president of the United States. 2)If Sally calls, tell her I'm at the library. 3)Blondes are more attractive than brunettes. 4) Don't you realize how silly that

40. ## 7th grade Lang. Arts

Hi! Can you please fill in the blanks below with one of the words listed that fits in the sentence correctly? Here are the sentences: 1) The program conatained a(n)______________ of the opera, so that we were able to follow the action even though the

41. ## Algebra

The height in feet of a ball t seconds after it is thrown upward is given by height = -12t squared+87t +8 find the height of the ball 2 seconds after it has been released

42. ## Physics!

A roller coaster track is designed so that the car travels upside down on a certain portion of the track, as shown in Figure P5.20. What is the minimum speed the roller coaster can have without falling from the track? Assume the track has a radius of

43. ## Calculus

2sin(2theta) + sqrt(3) = 0 interval (0,2pi) How do I solve this? I thought about maybe subtracting the sqrt(3) from both sides, so that i would have 2sin(2theta) = -sqrt(3) Then maybe dividing by two? sin(2theta) = -sqrt(3)/2 Am I doing anything right

44. ## algebra!

how do you solve this by substitution: step by step 1. 5x-y=16 5x+2y=13 2. 3x-3y=9 2x-4y=-16 3. x=-6y y=2/3x+5 thank you!

45. ## physics

An airplane has a velocity relative to the ground of 214 m/s toward the east. The pilot measures his airspeed (the speed of the plane relative to the air) to be 162 m/s. What is the minimum wind velocity possible?

46. ## Calculus - - Reiny

If S1 = 0.7 and S2 = 2.1 in geometric series, what would the sum of the first 12 terms in the series be? I tried doing this, and I got 1.16 or something :S How exactly do I do this? Please tell me what formula to use. I was using the Sn = a(rn-1)/r-1

47. ## Physics

A lightning bug flies at a velocity of 0.25 m/s due east toward another lightning bug seen off in the distance. A light easterly breeze on the bug at a velocity of 0.25 m/s. What is the resultant velocity of the lightning bug? I drew the .25 east but would

48. ## Acct

Journalize the following transactions -Received cash from investment made by owner,\$15000. Received cach providing accounting services, \$8000. Billed customers on account for providing services, \$4000. Paid Advertising expense 400. Received cash from

49. ## English

1.What figure of speech is this? I think it is personification "Death stands above me, whispering low I know not what into my ear." simile litotes personification metonymy synecdoche 2.What figure of speech is this:The fog comes on little cat feet This one

50. ## Math

A bike race is 32 miles long. By noon, Izek had ridden 3/4 of the distance. How many more miles did he need to ride to finish the race?

51. ## physics

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?

52. ## Chemstry

4NH3+5O2--->4NO+6H2O determine the amount of oxygen needed to produce 1.2x10^4mol of nitrogen monoxide gas

53. ## algebra

can anyone show me the steps to convert to scinctific notation of these two problems: .000316 which the answer is 3.16x10^-4 and 0.000517 which the answer is 5.17x10^-4

54. ## physics

a quarterback throws a pass to a receiver. the release point for the football is 1.8 m above the ground. he projects the ball with a speed of 20 m/s at an angle of 40 above the horizontal. If the pass falls incomplete, how long is it in the air? If the

55. ## A L G E B R A H ELP MS SUE.

I THINK I MAY HAVE DONE MY HOMEWORK WRONG BECAUZE IT SAYS TO : ESTIMATE THE PRODUCT OR QUOTIENT. SO WOULD THAT MEAN TO ACTUALLY DO WORK THEN ESTIMATE THE PRODUCT OR QUOTIENT LIKE FIRST -72 X 57 = -4104 OR ESTIMATE; -4000 ? I AM CONFUSED ABOUT WHAT IM

56. ## math

round 8,438 and 5,555 to the nearest hundred

57. ## physics

On the surface of the Moon, a ball is thrown horizontally, with a speed of 15 m/s, from the top of a 6 m tall hill. How far from the point on the ground directly below the launch point does the ball strike the ground? (On the Moon, the acceleration due to

58. ## Math

Geometric Proofs.... Write a justification for each step Given: AB = EF, B is the midpoint of Line AC and E is the midpoint of Line DF. 1. B is the midpoint of Line AC and E is the midpoint of Line DF. 2. Line AB is congruent to Line BC and Line DE is

59. ## Science

Describe the difference and function between how plant cells and animal cells obtain food. I put something like- plant cells get food by photosynthesis, using chloroplast, sun, water, and carbondioxide. animal cells get food by digesting water, meat,

60. ## geometry

in order to find the area of a regular hexagon using the formula Area=1/2(nxs)(a)you must frist find the apothem whie vertical leg of a 30-60-90 triangle with the base of 3. Find the length of the apothem in the 30-60-90 triangle

61. ## physics

A skateboarder, starting from rest, rolls down a 11.5-m ramp. When she arrives at the bottom of the ramp her speed is 6.95 m/s.

62. ## chemistry

calculate the volume of 17 M concentrated acetic acid solution that is needed to prepare 100 cubic centimeter of 1 M acetic acid?

63. ## Physics 1

At t = 0, a stone is dropped from a cliff above a lake; 1.3 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff. No idea how to get

64. ## us history

Regarding Thomas Paine's Common Sense... 1. According to Paine, peaceful negotiations and reconciliation between the American colonists and England were no long possible after what single specific historical event? 2. According to Paine, how has our

65. ## chemistry

calculate the volume of 17 M concentrated acetic acid solution that is needed to prepare 100 cubic centimeter of 1 M acetic acid?

66. ## math

lim x->0 sinx secx / x use the fact that the limit as x approaches 1 of (sinx / x) = 1

67. ## Physics

The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a circular orbit of radius 3.01 x1011 m. Find the period of the orbit.

68. ## math

the melt in your mouth chocolate factory is a rectangular building.The distence across the front of the store is 98 yards.The distance from the front to the back one-third of this distance.If the owners paint a sign all the way around the outside of the

69. ## english

In this sentence I am suppose to give the simple subject and simple predicate. 1. The clay is usually hard and brittle at first. simple subject is clay and simple predicate is the word is 2. The soft clay is then shaped into a cup, a bowl, or a vase.

70. ## physics

A truck of mass 5000kg is travelling down the highway when it breaks suddenly. The unbalanced force F acting on the truck when it is braking is 6000N. What is the acceleration?

71. ## Math

a bank of 16 floodlights together use 5600 watts of power how much power is used by each bulb

72. ## Chemistry

What is the frequency of light having a wavelength of 5.6 micrometers?

73. ## physics

A ball is projected horizontally from the edge of a table that is 1.2 m high, and it strikes the floor at a point 1.11 m from the base of the table. The acceleration of gravity is 9.8 m/s2 . What is the initial speed of the ball? Answer in units of m/s

74. ## lit

Is this right? My friend jumped off the diving board and shouted "look out below!"

A women has \$500,000 invested in two rental properties. One yields an annual return of 14% on her investment, and the other returns 9% per year on her investment. Her total annual return from the two investments is \$52,000. How much is invested at each

76. ## physics

A ball is projected horizontally from the edge of a table that is 1.2 m high, and it strikes the floor at a point 1.11 m from the base of the table.The acceleration of gravity is 9.8 m/s2 .How high is the ball above the floor when its velocity vector makes

77. ## math withpizzazzi book c pg.C-14and 13

what re the answe to these two mat riddles : whats wrong with getting a hair cut ? and what do you call it when a bunch of kids throw crayon and poster paint at ou

78. ## Math

Reasoning What property of addition is shown in the following number sentence? Explain. 7 + (3 + 5) = (7 + 3) + 5

79. ## English

I'm posting you your answers for the true-false activity again because I don't want to make them wrong. Lorenzo thinks that learning English is difficult. TRUE Lorenzo prefers geography lessons to English lessons. TRUE Though Lorenzo doesn't say it

80. ## math

round 929 to the nearest hundred

81. ## math

The line y=2x + b is tangent to the graph y= sqrt x at the point P= (a,sqrt a). Find P and determine b

82. ## helpppp

concentrated sulfuric acid has a density of 1.84g/ml. calculate the mass in grams of 1.00 liter of this acid.

83. ## Calculus

Wouldn't this sequence be neither geometric and neither arithmetic? 0.0005, 0.005, 0.05, 0.5 I can'f find a pattern. And also this sequence, it doesnt look arithmetic or geometric 1/5, 1/4, 1/3, 1/2, 1,... And also this other question: The first three

84. ## Math

Minnie has 6 country CDs and 5 rock CDs. Amanda has 5 rock CDs and 6 country CDs. Who has more CDs? Explain.

85. ## accounting

6. Acme Manufacturing Company estimates factory overhead as a percentage of machine hours. On 1.1.11, Acme estimates total factory overhead of \$400,000 for the year, and estimates 20,000 machine hours will be required during the year. During the year,

86. ## Calculus

Evaluate the indefinite integral of InT(-x^3+9x^2-3x+2)/(x^4-2x^3) I got ((1-2x)/(2x^2))+3*ln(2-x)-4*ln(x) but apparently that's not the answer...

87. ## pre-calculus

Could someone please help me with this problem? square root of (2x+1) -5 = 8 I think I take the 5 and add it to the 8 and then I have square root of (2x+1) = 13 then do I square both sides and end up with 2x+1 = 13^2 2x+1=169 2x+1-1=169-1 2x=168 x=84 am I

88. ## Personal finance

A saver has \$2500 on deposit in an acct. earning 5% interest. During this yr., the inflation rate was 6%. After one yr. what is the buying power of the amount of savings for that person?

89. ## Physics

Asteroid satellite: While on its way to Jupiter in 1993, the Galileo spacecraft made a flyby of asteroid Ida. Images captured (Fig. P5.66) of Ida discovered that the asteroid has a tiny moon of its own, since given the name Dactyl. Measurements found that

90. ## Biology

What are two major flaws in the Phylogenetic Tree System?

91. ## Physics

two dogs pull horizontally on ropes attached to a post; the angle between the rope is 70deg. dog A exerts a force of 268N and dog B exerts a force of 310N. find the magnitude of the resultant force. and the angle the resultant force makes with dog A`s

92. ## English

I have a question we were suppose to analyze The River by Bruce Springsteen in which a guy speaks of how the youthful dreams his girlfriend and him have had all disappeared. He remembers those dreams the way he remembers the way they used to go to the

93. ## English

I'm still doubting about the true/false activity you corrected yesterday. I need to motivate my choice. 1) Lorenzo says: "I’m not very fond of French and English. I think learning foreign languages takes a lot of time and you have to revise too often. If

94. ## Physics

a stone is thrown horizontally from the edge of the cliff with speed of 18m/sec. Cliff is 50 meters high

95. ## Math

Reasoning Does (4 + 5) + 2 = 9 + 2? Explain.

96. ## physics

A truck at rest at a stoplight accelerates uniformly with acceleration a = 9 meters/second2 for 6.8 seconds after the light turns green. What is the speed of the truck in meters/second after that time interval?

97. ## CHEMISTRY

A geologist discovered a new rock which he suspected contained an oxide of an element called mysterium. He gave thr ock to a chemist who ground it up and heated a sample with carbon at a high temperature. No metal was produced in this experiment. 1.Why did

98. ## Science (Hypothesis)

The null hypothesis is the hypothesis of no difference, while the hypothesis is what you expect to occur, right? So, what if what you expect to occur is the null? Can you do this? For example, Null: Mice prefer areas along the wall and areas along the

99. ## Physics

two dogs pull horizontally on ropes attached to a post; the angle between the rope is 70deg. dog A exerts a force of 268N and dog B exerts a force of 310N. find the magnitude of the resultant force. and the angle the resultant force makes with dog A`s

100. ## math

10/3+2*4=8 Insert grouping to make the equation true

101. ## Math

Show how the Commulatice Property of Addition works using the number 2, 3, and 5.

102. ## chem

7.82 SILVER(I) NITRATE REACT WITH POTASSIUM CHLORIDE FIND THE BALANCED CHEMICAL REACTION USING THE GIVEN MASS FIND THE MASS OF THE REAGENT. ALSO CALCULATE THE MASSES OF THE PRODOUCT FORMED IN THE REACTION

103. ## math HELP!!

What is the answers to following( i can't get it) Estimate each quotient. 2. 24,678 ÷ 83 3. 18,857 ÷ 37 4. 53,556 ÷ 32 5. 5,539 ÷ 90 6. 36,626 ÷ 12 Find each quotient. 7. 31  1,798 8. 81  7,776 9. 27  8,775 10. 96  31,776 11. 72 

104. ## Economics

What is the difference between microeconomics and macroeconomics? Discuss and contrast the two theories.

105. ## Physics

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic

106. ## math

dentify the line that contains the error in this solution and correct the work for that line. Negative two times x plus one minus three is greater than or equal to eleven Negative two x plus negative two minus three is greater than or equal to eleven

107. ## Geometry

Given: segment AE and segment CD are lines. Prove: angle ABD is congruent to angle CBE. Thanks!

108. ## social sciences

Write a paragraph of at least eight sentences to explain how the swahili language came into being

109. ## science

i need help in finding the defintion for words like physical,mass,behavior,color,melting point, appearance,never,density,senes,chemical,gas,boiling point,deposition,condensation,vaporization,sublimation.

110. ## math

how do i change a decimal into a fraction in simplist form

111. ## math

God Bless you all for your help

112. ## Physics

Suppose the density of the Earth was somehow reduced from its actual value to 1300 kg/m3. What would be the value of g, the acceleration due to gravity, on this new planet? Assume the radius does not change. I know that density = mass/volume & the volume

113. ## physics

a car starts from rest and accelerates for 7.8s with an acceleration of 2.3 m/s squared. how far does it travel

114. ## accounting

Bubba Production Company produces a homogenous product. All materials are added at the beginning of production and other product costs are added evenly over time until the product is complete. Conversion costs were 70% complete with respect to the 2,000

115. ## math

find the square root to the nearest tenth of 13

116. ## science

What type of information does a map's scale provide? A. location B. symbols C. distance D. vegetation I can't decide which answer is right Is it B or C.

117. ## physics

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?

California passed a law prohibiting any transport of nuclear waste in the state unless the company doing so is a resident or is owned by resident of California. What kinds of constitional issues do this raised?

119. ## Physics

A stone of mass 3.2 kg is tied to a string of length 0.9 m, and is swung in a horizontal circle with speed v. The string has a breaking point force of 10.1 N. What is the largest value that v can have without breaking the string?

120. ## Geometry

Given: segment AE and segment CD are lines. Prove: angle ABD is congruent to angle CBE. I am in need of guidance in proving this statement. Thanks!

121. ## English

Thank you very much. Here are some more sentences I'd like you to check. I thought the sentence "In my family, we are in three" was incorrect. 1)I like doing a lot of things like hanging out with my friends, cooking with my mum and travelling with my

122. ## Math

Show how the Commutative Property of Addition works using the numbers 2, 3, and 5.

123. ## science

what tools do we use to measure mass what units do we use when measuring

124. ## algebra estimate

i have to estimate each product or quotient are these right? -72 x 57 i got: -70 x 60 - -4200 -92 x (-41) i got 3600 -83 x 52 i got: -80 x 50 = -40000 -803 x (-106) i got -800 x (-100) = 80000 49 x 61 i got 50 x 60 = 3000 i don't know about these division

125. ## Math

I need help with these following questions: 1. Which type of graph is best to illustrate differences in data by using bars to represent the data? (a) bar graph (b) line graph (c) circle graph (d) pictorial graph 2. Sales made last year by Murray's

126. ## Chemistry !

A geologist discovered a new rock which he suspected contained an oxide of an element called mysterium. He gave thr ock to a chemist who ground it up and heated a sample with carbon at a high temperature. No metal was produced in this experiment. 1.Why did

127. ## algebra

How many terms are in the expression 5x – 6a + 8?

128. ## calculus

Suppose the function G(t) represents a test grade (out of 100 points) as a function of hours studied. If G(t)=-0.046t^3+0.915t^2+38.005 points, what is (dG/dt)when t=4? Round your answer to the nearest point per hour. a. 50 points per hour b. 3 points per

129. ## English

I just wanted to ask you why you think the statement in 2 (with reference to paragraph 1 is "correct", I mean true). Thank you. 1)Lorenzo says:” I’m not very fond of French and English. I think learning foreign languages takes a lot of time and you

130. ## chemistry

what do you mean by parts per million?

131. ## English

Can you help me check these sentences on family and hobbies? I need to know if the word choice is correct. Thank you. 1)I’ve got short, curly, blond hair and blue eyes.In my family we are three: my mother, my father and I (not me). Correction: In my

132. ## Physics

In recent years a number of nearby stars have been found to possess planets. Suppose the orbital radius of such a planet is found to be 5.5 x1011 m, with a period of 1210 days. Find the mass of the star.

133. ## Chemisty

Consider a hydrogen atom that goes from the n = 2 to the n = 1 state. (a) Calculate the wavelength, in nm, of the photon emitted. (b) What part of the electromagnetic spectrum is it?

134. ## phy

a car rolls down an incline starting from rest A graph

135. ## math

if A and B are countable sets, then prove AxB is countable

136. ## ALGEBra Estimate

need to estimate to find quotient: -476 / 90 ESTIMATE IS -450 / 90 IS -5 IM NOT UNDERSTANDING ESTIMATE FOR 538/ (-63) 479 / (-61)

137. ## math

the altitude of the pyramid is 30cm and its base is enclosed by a rectangle whose dimension are 12cm by 18cm respectively. what is the distance from the vertex of a section parallel to the base whose area is 72cm^2?

138. ## maths

Q1) Paul brought a car last year. It has lost 12½% of its value since then. It is now valued at £10,500 How much did Paul pay for his car? -[I got £11812.50... Is that right?~xD] Q2) A newspaper report stated: "Concorde has flown 7.1x10^7 miles. This is

140. ## Math

I do ont get math at all

141. ## calculus

int_(1)^(2) 6/t^4 dt

142. ## English

I'm posting you the ones I found most difficult to check. Thank you. 1)I hate doing shopping (“the shopping”?). I attended the primary and middle schools in Italy. I’ve got a pimply face with a pimply nose and a normal (?) mouth. 2) I’ve got small

143. ## Math

Jon begins a new job with an annual salary of \$ 42,000 for his first year of employment, a guarantee of a 5% salary increase each for his second, third and fourth year and a guarantee of a 20% increase for his fifth and sixth year. What will be his salary

144. ## math

Given: segment AE and segment CD are lines. Prove: angle ABD is congruent to angle CBE.

145. ## geometry

if ab=12,bc=7,and ac=19 what must be true of points a,b and c

146. ## Calculus

Evaluate the indefinite integral of InT(-x^3+9x^2-3x+2)/(x^4-2x^3) I got ((1-2x)/(2x^2))+3*ln(2-x)-4*ln(x)+c but apparently that's not the answer... and I don't know why.

147. ## Maths

Jason’s credit card’s beginning unpaid balance for August is \$2,000. During the August billing cycle he made a payment of \$200 and used card to purchase \$50 worth of grocery. Credit card charges 24% annual percentage rate and uses the unpaid balance

148. ## math

if A and B are countable sets, then prove AxB is countable

149. ## Calculus

Evaluate the indefinite integral of InT(-x^3+9x^2-3x+2)/(x^4-2x^3) I got ((1-2x)/(2x^2))+3*ln(2-x)-4*ln(x)+c but apparently that's not the answer... and I don't know why.

150. ## geometry

Which of these tables correctly matches the list of tools with the task that can be performed with the tools? Answer A.pencil, string, ruler = duplicate a rectangle B.pencil, compass, straightedge = duplicate a triangle C.pencil, straightedge, ruler = make

151. ## Anthropology, sociology and psychology

Reasons for decreased marriages and birth rate. pls help

152. ## Math

a technician draws 10 cc of a patients blood to be tested for cholesterol and for red blood cells. identify a.the sample b.the population c. the variable being studied i attempted but im not sure if its right...i said a) the 10 cc of blood b) the patients

153. ## world history

What effect did the trading civilization of Phoenicia have on the ancient world

We are learning about animals and I have to write sentences describing animals. Are these correct?Thanks for checking them 1.El venado café es muy bonito. 2.El elefante gris es muy inteligente. 3.La jirafa marrón es muy alta y delgada. 4.La ardilla café

155. ## Physics

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic

156. ## physics

A train travels 50 km and stops to pick up freight. It then travels another 150 km before dropping off the freight. Its total travel time is 11 hours. What is the average velocity of the train if it travels a straight track?

157. ## Economics

What economic impact does a recession have on the finances on a health care facility? On the health care system? Could you direct me to a web site

158. ## physics

you walk 2.0 miles N,then 4.5 miles E,then 6.2 miles S.what is your displacement?

159. ## physics

A bus slows down uniformly from 79.6 km/h (22.1 m/s) to 0 km/h in 15 s. How far does it travel before stopping?

160. ## Economics

What is the difference between microeconomics and macroeconmics? Discuss and contrast the two therories. Do you have a web address that I can go on to get an answer for my question .

161. ## Science

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.4 m until, at t = 1.66 s, it is traveling east. The car does not alter its speed during the turn.

162. ## Physics

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic

163. ## algebra est prod quotien

i have to estimate each product or quotient are these right? -72 x 57 i got: -4104 est -4000 -92 x (-41) i got 3772 = est: 3800 -83 x 52 i got: -4316 est: -4500 -803 x (-106) i got 85228 est: 85000 49 x 61 2989 est: 3000 -476 / 90 -5.288 est: -500/ 90 ?

164. ## physics

A 10 kg cart was observed moving north with a speed of 15 m/s before it collided with an identical cart moving south at 10 m/s. The collision was observed to cause the carts to couple and move together as one. What is in kg m/s the combined momentum of

165. ## biochem

I mixed 4.50mL of 10.0mM NaOH with .50mL phenol red. I need to calculate the pH of this solution. I have more information in my lab but I am not sure what data I need to look for. As part of the experiment I calculated pKa of Phenol Red. Do I use that pKa

166. ## Finance

what would be the stock value if the growth rate is 10 percent, but PCN's beta falls to: 1-0? 0-5?

167. ## Science

If a block is 12cm wide, 7cm long and 9 cm then how much of the block will be below the surfaceof the water if the block weights 500 grams?

168. ## science

what tools do we use to measure mass what units do we use when measuring

wHAT IS SIMPLE SUBJECT AND SIMPLE PREDICATE IN: tHEY WILL USE A COMPASS ON THEIR HIKE?

170. ## social studies

Is there any online textbooks I may use to finish my social studies?

171. ## Math

A rectangle sheet of aluminum foilis 50 centimeters long and 20 centimeters wide, and weighs 5.4 grams. 6ind the thickness of the aluminum foil in centimeters.

172. ## cultural diversity

1. Which one of the following statements does Not exemplify the concept of teachable moments? A. The teacher follows the child's cues when exploring a topic. B. The adult, acting as the child's social partner in the block center, uses semantic extension

173. ## Math

how do you solve this by substitution: step by step 1. 5x-y=16 5x+2y=13 2. 3x-3y=9 2x-4y=-16 3. x=-6y y=2/3x+5 thank you!

174. ## Calculus

How would I do this the fraction way, I want to get used to doing it in fraction form, that would make things much easier. 2. 5 - 1 + 1/5 -... Common ratio is -0.2, so that would be -1/5. S = a/1-r S = 5/1-(-0.2) S = 5/1.2 = 4.166 = 25/6

175. ## chemistry

What is the concentration of a standard solution? - It was prepare to 250mL, it contained 9.7563g (O.lM) of (NH4) and 3mL of sulphuric acid.

176. ## Math

Write each missing number 3 + = 5+3

177. ## Art

how would you as a defence attorney defend Jackson Pollock's art peice calle convergence

178. ## math 101

Find each quotient. 7. 31  1,798 8. 81  7,776 9. 27  8,775 10. 96  31,776 11. 72  4,032 12. 78  12,168 13. 48  10,608 14. 56  31,136 15. The town collected \$43,556 in park fees over the past year. The town has 12 parks.

179. ## math

When a woman is as old as her father is now, she will be five times as old as her son is now. By then, her son will be eight years older than she is now. The combined ages of her father and herself are 100 years. How old is her son?

180. ## english

We need to write the complete subject or predicate for each word group. Can you check to see if I am right? 1. many early artists ------ artists 2.designed a certain kind of dish, pot, or vase--designed 3. some early kinds of artwork -- kinds 4. were very

181. ## Spanish

Could you please check these -thank you 1.How do you say I am going to wake up early I think it is "Yo me voy a despertar temprano" 2. What is another way of saying "Voy a secarme el pelo. Is it "Me voy a secar el pello.

182. ## algebra

procedure of 4/5 - 2p/5 =6/5

183. ## Physics

You are given a vector in the xy plane that has a magnitude of 70.0 units and a y component of -55.0 units. What are the two possibilites for its x component? Please explain, thanks! :)

184. ## Macomb

Marie Antoinette was negligently injured by Guillotine. Marie is preparing to file a lawsuit against Guillotine in state court for \$23,000 damages as compensation for the private wrong that Guillotine committed against her. Which court in Michigan has the

185. ## chemistry

would aromatic rings be acidic or basic? they don't really have anything to lose or any spots to gain...

186. ## science

what effect does sugar water have on a plant?

187. ## chemistry

A 5.00 % m/m glucose solution has d = 1.02 g/mL. What is the mass of glucose in 375 mL of the solution? Enter only the numeric value for your answer (no units).

188. ## English

Can you help me check these sentences, please? I included the words I'm unsure of before the question marks. Thank you. 1)I find it (reading books) rather boring and sometimes a little too far away from the real world. I like reading science and history

189. ## Administering the Labor Agreement

17. O.S.R. Manufacturing Inc. is a manufacturer, distributor, and installer of kitchen cabinets. Its manufacturing plant and installation crews are unionized by the Carpenters' Union, and the distribution employees are unionized by the Teamsters. Which

190. ## Geology

Based on Paul Garner's book: The New Creationism, which of the following are problems with the Solar Nebula Theory? (Note: You may choose more than one of the following) [1] dust particles shouldn't accrete, they should spread apart [2] the sun isn't

WHAT IS THE SIMPLE SUBJECT AND SIMPLE PREDICATE IN: THE SMELL OF COOKING IS DELICIOUS TO THE HUNGRY CAMPERS?

192. ## Math

155,168,170,193,198,209,229,270,324,347 1.median 2.maximum 3.minimum 4.mean 5.mode 6.range

193. ## Math

Denzal's first 3 scores in math were 90,100,90. a.what must Denzal score on his fourth test to keep his mean score at 90 or higher? b.what must Denzal score on his fourth test to keep his median test score at 90 or higher?

194. ## English

Leave no children behind, is it a fallacy?

195. ## algebra

Simplify. Remember to use absolute-value notation when necessary. If a root cannot be simplified, state this 4√(7b)4

196. ## Math

Solve m =y-y1/x-x1 for y

197. ## English

I just wanted to know which alternatives are better. Thank you very much for your help. 1)I hate doing shopping OR the shopping”?). 2) I do some football OR I play football). 3) I like reading war and car books OR war books and car magazines (?) and

198. ## cultural diversity

1. Asian emphasis on the value of filial piety may be noted in: A. A family's reluctance to disagree with an early childhood professional. B. Encouragement of interaction between adults and children. C. Strict adherence to Buddhist teachings. D. A mother's

199. ## math

i need to cmplete a venn digram of composite and odd using the numbers 20-35.

200. ## Physicss

a car brakes to a halt in 5 seconds. The position of the car versus time is given by: x = 10t - t^2 a) What is the average speed between 0 s. and 4 s.? Thank you

201. ## U.S. History

I have to do a book report during the time period of 1900-1981, only occuring in the united states. I do not know what books to look for to do my report, any recommendations?

202. ## math

what is the scientific notation for 1,890,000 and 7,426,000

203. ## MAth

estimate each sum or difference. 22.8+49.2+1.7

204. ## agriculture

How do I find the marginal profitability of using precision ag practices in wheat production?

205. ## algebra

can you check if im right? -7 + 9 i got 2 -23 - 12 -23 + -12 = -35 8 - (-5) 8 + 5 = 13 -12 + 7 = -4 5 - 14 5 + (-14) = -9 12 + (-8) = 4 8 - 13 8 + (-13) = -5 -5 - 16 -5 + -16 = -21 13 - 17 13 + -17 = -4 -26 + (-14) = -40 -26 + 13 = -13 |-2| + 5 2 + 5 = 7

206. ## economics

how did the middle class grow?

207. ## psychology

why do you think it was important to Cobb that they held onto what was real and woke up?Are there areas of your life where reality might need to intrude?How can we know whether or not God is the ultimate reality?

208. ## social studies HELP

who developed a vaccine to prevent polio?

209. ## math

the altitude of the pyramid is 30cm and its base is enclosed by a rectangle whose dimension are 12cm by 18cm respectively. what is the distance from the vertex of a section parallel to the base whose area is 72cm^2?

210. ## math

how do you make 9=6 (using roman numerals ) be equal on both sides

211. ## math

i need to complete a venn diagram using the numbers 20-35 please help me drawing a venn diagram.

212. ## math

square root of 64 and the square -64

213. ## statistics

# A stoplight at the corner of Lincolnway and Duff Avenue is red 20% of the time. For someone who drives through this stoplight 10 times a week, what is the probability that they will stop at least three times? a: .201 b: .771 c: .878 d: .322

214. ## Ms Visio

• 2. Construct a data dictionary and draw a hierarchy chart and flowchart or pseudocode for a program to calculate commissions. Output. Output is the commission report shown in the spacing chart that follows. At most, 50 detail lines are to appear on

215. ## geometry

Two groups of students are asked to depict a picture of a semi-circular pizza. Group 1 uses a ruler to depict the base of the shape and completes the semi-circle with a pencil. Group 2 uses a ruler to make a line of 10 inches to depict the base of the

216. ## Science

If you lift a chair weighing 50n to a height 10.5 meters and carry it 10 meters across the room. How much work did you do on the chair?

217. ## Math

What is 5,892.719 round to the nearest hundredths

218. ## standard deviation

if the standard deviation of a set of n numbers is y what is the varience of the set? i need help!

219. ## Rob

1) A White eye (w) female Drosophila is crossed with diminutive (dm) males. The F1 wild type females are then crossed to the double mutant, white eye, diminutive males and produce the following: white eye, normal size 487 normal eye, diminutive 475 normal

220. ## algebra

can you check if im right? -36/9 = -4 -52/ -4 = 13 (-5) x (-20) = 100 -63/-9 = 7 (-15) x (2) = -30 22 /-2 = -11 (13) x (-6) = -78 -100/-5 = 50 (-60) x (-3) = 180 -240 / 30 = -8 (43) x (-8) = -344 -169/ -13 = 13

221. ## Physics

a car brakes to a halt in 5 seconds. The position of the car versus time is given by: x = 10t - t^2 a) What is the average speed between 0 s. and 4 s.?

222. ## scientist

scientists do their experimental tests more than once,so they can reduce the effects of chance errors.This is called conducting

223. ## geometry

Suppose right triangle ABC has one acute angle 47º. Suppose also that right triangle DEF has an acute angle 43º. How are triangles ABC and DEF related?

224. ## math

John goes to the store to buy some school supplies.He byus a stapler for \$6.32, staples for \$3.75, pencils for \$2.00, and 2 packs of erasers for \$0.99 each. He must pay \$0.07 tax for every (\$1.00)dollar he spends. How much does John have to pay in all?

225. ## Calculus

If S1 = 0.7 and S2 = 2.1 in geometric series, what would the sum of the first 12 terms in the series be? I tried doing this, and I got 1.16 or something :S How exactly do I do this? Please tell me what formula to use. I was using the Sn = a(rn-1)/r-1

226. ## chemistry

If the equilibrium constant for the carboxyl group of glycine is 2x10^-3, what is the pk value?

227. ## Science

Can someone please help me please thank you. Climate change is an environmental issue in the news almost daily, and air pollution impacts us on a global level. What are the implications of global warming? Do you think the efforts to improve air quality are

228. ## Genetics

1) A White eye (w) female Drosophila is crossed with diminutive (dm) males. The F1 wild type females are then crossed to the double mutant, white eye, diminutive males and produce the following: white eye, normal size 487 normal eye, diminutive 475 normal

229. ## HELP!!

1.) 15 * 4 2/3 2.) 10 2/3 divided by 4

230. ## science

A driver of a car traveling at 17.4 m/s applies the brakes, causing a uniform deceleration of 1.8 m/s2. How long does it take the car to accelerate to a final speed of 13.4 m/s? Answer in units of s

231. ## government

Do voter ID laws conflict with anything in the Constitution besides, situationally, the 24th Amendment?

232. ## Algebra

Need to use properties to help simplify each expression. Example: 5 * 8 * 6 Would the answer be a actual property or 240

233. ## science

What is an independent and dependent variable? Please give a definition and example.

234. ## geometry

if B is the midpoint of AC=1/2AC

235. ## algebra

What is perdiction equation

236. ## TRIG

THE SIN COS SEC TAN COT CSC 5X+Y=0

B-20= -9B

238. ## General Knowledge

What is the color of the big building located on Pacific Blvd. Vancouver BC, Canada?

239. ## math

My teacher makes us use this: => and to symbolize the steps we use to find our answers, but I don't understand the difference. Can someone please explain it?

240. ## Speech

Help with an introduction speech outline (I just need some help so I can get a start on it...do not tell me websites that can help me unless they have examples on them)

241. ## cultural diversity

1. Native Americans are ambivalent about early intervention programs for children with disabilities because they: A. Have a high tolerance for human imperfection. B.have their own tribal healing ceremonies and rituals. C. Believe programs of that type

242. ## algebra

How many terms are in the expression 5x – 6a + 8?

243. ## english

Change the sentences,replacing the phrase people who are..with an adjective used as an noun. 1-People who are uneducated have a hard time catching up.

244. ## Socials

We are doing this party thing in Socials class. And my party is the NDP party, so we'll be asked questions from the Conservatives and Liberals. I have to advise the leader on stuff. But I don't know what to say. I'm just supposed to whisper stuff into my

245. ## Calculus

Evaluate the indefinite integral: INT dx/(64+x^2)^2

246. ## english

I'm sorry Ms. Sue. The directions said write the simple subject or predicate for each. I told you the wrong thing.

247. ## calculus

sec^2(pi/2-x)-1=cot^2x where do i start

248. ## science

if something has a high density,what does that mean

249. ## cultural diversity

1. Prejudicial behaviors by young children, particularly in the 3 to 5 year age group, are not rooted in: A. Cognitive inability to fit new information and experiences into an existing belief system B. Observation and emulation of pro-social attitudes and

250. ## Englisch

Can somebody help me to write a summary? The article "Towards a greener Economy?, written in 2009 by friedman, deals about the economic system in unsustainable. The satirical newspaper decribe the americans are wasteful. Than i don't know how can i write

251. ## english

could anyone please clarify my query : why there is no passive formation for the following sentences though they have transitive verbs which take an object ? 1. she goes to school 2. she crosses the bridge

252. ## history

how did the asias live

253. ## science

what property of plastic is important for it to be used when picking up a hot item

254. ## MATH

WHICH IS GREATER 11/24 OR 29/35?

255. ## math

find the average 6 1/5 and 6 1/4

256. ## English

Thank you very much. I still have a few more sentences to check. 1)I hate doing shopping (“the shopping”?) and eating Chinese food. I attended the primary and middle schools in Italy. I’ve got a pimply face with a pimply nose and a normal mouth. 2)

257. ## math

six cars are parked in front of a car dealership. If you are looking at the cars from the front. the red car is parked in front of the green car. the black car is between the green and the yellow car. The blue car is parked on the right side of the red

258. ## calculus

antonio is thinking of four number from 1 through 9 with a sum of 18. find the number

259. ## algebra

domains are 1,2,3,4 and ranges are -1 ,4,9,14 what is the function rule?

260. ## Social Studies

which economy is better?

261. ## math

does (4+5)+2=9+2? explain

262. ## spelling

verbs, the telling part or what is happening part of a sentance

263. ## MATH

FIND THE PERIMETER AND AREA OF A ROOM WITH THESE DIMENTIONS 11FT 13FT 14FT 3FT

x/8-1/6=6

265. ## physics

A 10 kg cart was observed moving north with a speed of 15 m/s before it collided with an identical cart at rest. The collision was observed to cause the carts to couple and move together as one. What is in Joules the kinetic energy of the system of both

266. ## math

Estimate products of fractions. 2/9x26

267. ## Science

what mass of sodium carbonate is present in a 3000cc of a 1.2 solution? The density of the sodium carbonate is 1.5 g/ml.

268. ## Math

Can someone explain to me the greatest possible error when finding the maximum and minimum possible lengths of something?? PLEASE!!!

269. ## science

if something has a high density,what does that mean

270. ## science

what property of water makes it a liqiudand not a sold

271. ## Math

Segments parallel to the sides are used to divide a square board 3 ft on each side into 9 equal-size smaller squares. If the board is in a level position and a grain of rice lands on the board at a random point, what is the probability that it lands on a

272. ## English

1. I will give you what you want. 2. I will give you the thing which you want. 3. I will give you the things which you want. 4. I will give you all that you want. (Does #1 meaqn #2, #3, or #4?)

273. ## spanish

whats the verb for su madre en el hospital

274. ## Algebra II

Right now we're doing systems of Linear Equations in Three Variables. It says to solve the following system: x - y + 3z = 4 x + 2y - z = -3 4x + 3y + 2z = -5 Whatever I try with this problem (and the others like it) it comes out wrong. I've had about one

275. ## Algebra 1

Can someone explain to me the greatest possible error when finding the maximum and minimum possible lengths of something?? PLEASE!!!

276. ## math

find the prime factorization of 175

277. ## MAT/117

The weight of an object varies on different planets. Solve the equation w=Cr^-2 for r

278. ## a l g e b r a = Mrs Sue

can you check if im right? -36/9 = -4 -52/ -4 = 13 (-5) x (-20) = 100 -63/-9 = 7 (-15) x (2) = -30 22 /-2 = -11 (13) x (-6) = -78 -100/-5 = 50 (-60) x (-3) = 180 -240 / 30 = -8 (43) x (-8) = -344 -169/ -13 = 13

280. ## psychology

about the inception the movie cobb's guilt and the way that it manifests in his subconscious puts him and the in danger but it also helps to ground him in reality,How canguilt be damaging in our lives?In what circumstances might it be right and healty?

281. ## math

18.45 divided by 7?

282. ## math

how do I work this problem? a+3+5=16a=

284. ## math

the two square roots of 9 are 3 and what

285. ## math

square roots to the nearest tenth of 42

286. ## social studies economics

identify and understand the meaning of 3 different economic systems: traditional, command , and market is there a website i can find this out

287. ## social studies

how can the study of history help show our countrys diversity?

288. ## dayli science

write one or two sentences that contain these words:hypothesis,solutin,prolem,scientist

289. ## Math

Reasoning Does (4 + 5) + 2 = 9 + 2? Explain

290. ## algebra

fill in the blank on distrubitive property (23times975)+(23times25)

291. ## Math

how to figure possible set of scores for 15 students that would result in the class average of 66

292. ## prealgabra

36*x^2-20*y^2/3*x+7*y find the quotient

293. ## math

the diagram shows a trapeze in a childrens playground. AC is horizontal bar 1.2m long. BX and DY are vertial posts each 3.4m tall. they are 2.5m apart. AC is suspended by ropes, AB and CD each 2.0m long. Calculate to one decimal place the vertical height

294. ## math

what is 7,468 rounded to the nearest hundred

295. ## algebra - mrs sue

sorry it should boe -100/ -5 should be : 20

296. ## psychology

how can we know that the world around us is real and what do we mean by real?

297. ## psychology

inception is possible?

298. ## math

the base edge of a triangular pyramid is 3 meters and its altitude is 10 meters. find the area of a section parallel to the base and 6 meters from it.

299. ## math

3a^2+25a+28/3a+4 =

300. ## english III

what is a pronoun of a sentence?

f(x)=8x-x2

302. ## math

what is 1/3of 98

303. ## english

No one has ever returned from that desert. (is the verb transite or intransitive and why)

304. ## algebra

fill in the blank on distrubitive property (23times975)+(23times25)

305. ## math

how many feet are in 261.32 yards

306. ## math

(5 + 3) + 9 = 8 +

2x+(y-50)=90