# Questions Asked onDecember 13, 2012

1. ## physics

10 people,each of mass 70 kg, stand on a boat with a mass of 1000 kg. they jump off one end of the boat with velocity 1 m/s relative to the boat. the boat rolls in the opposite direction without friction. a what is the final velocity of the boat if all the

2. ## math

Product in thousand kilogram of a certain company in first,second and third e.t.c. Weeks is the same as the co-efficient of the first,second,third e.t.c. Power of x in the expansion of(1+x)(1-x)^-2. Find the product in the six week.

3. ## accounting

THIS IS THE SECOND PHASE OF THE TAX RETURN PROBLEM YOU BEGAN AT THE END OF CHAPTER 4. THIS PHASE OF THE TAX RETURN INCORPORATES THE MATERIAL FROM CHAPTERS 5,6,7, AND 8 BY PROVIDING YOU WITH INFORMATION CONCERNING THE SCHNAPPAUFS' DEDUCTIONS FOR 2010. THEY

4. ## CHE MISTRY

149ml bubble of hot gases at 217 degrees celcius and 1.78 atm escapes from an active volcano. What is the temperature, in celcuis, of the gas in the bubble outside the volcano if the new volume of the bubble is 164ml and the pressure is 0.770atm?

5. ## statistic

The following data are the numbers of cars thefts that occurred in a city in the past 11 days. 6 3 7 11 4 3 8 7 2 6 9. calculate the values for the first and third quartiles. construct a box plot for the given data.

6. ## Chemistry

Is this done right? White phosphorous, P4, spontaneously bursts into flame in Oxygen gas. if 6.5 g of white phosphorous reacts completely with oxygen to form 11.54g of a phosphorous oxide, what is the empirical formula of this oxide? this is what i did:

7. ## Chemistry

When 0.40 g of impure zinc reacted with an excess of hydrochloric acid, 127 mL of hydrogen was collected over water at 10 degress C The external pressure was 737.7 Torr. a) What volume would the dry hydrogen occupy at 1.00 atm and 298 K ? b) What amount

8. ## Genetics 7th

Eye color Fur Color black white black 24 24 red 25 27 The table above describes offspring of the same two parents. What are the most likely genotypes of the parents? Ff Ee and ff ee Ff Ee and Ff Ee FF EE and ff ee

9. ## physics

A certain car is capable of accelerating at a uniform rate of 0.84 m/s 2 . What is the magnitude of the car’s displacement as it accelerates uniformly from a speed of 84 km/h to one of 97 km/h? Answer in units of m

10. ## ASAP CHEMISTRY

Determine the molar mass of the following: 0.94g of a gas that occupies 500L at 0 degrees celcius and 1.00 (STP). I keep getting 32g/mol

11. ## physics

A baby sitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.770 m/s 2 . What is the velocity of the stroller after it has traveled 5.94 m? Answer in units of m/s

12. ## physics

Imagine that a new asteroid is discovered in the solar system with a circular orbit and an orbital period of 7 years. What is the average distance of this object from the Sun in Earth units?

13. ## Chemistry

determine the pH of a 0.116 M Ba(OH)2 solution at 25 degrees C. i keep getting 13.06 for this answer, but the answer is 13.37 :S what i do is i take the negative log of the concentration which is 0.9355 which is pOH. i know that pH = 14 - pOH so i get pH =

14. ## Chemistry

Consider the gold-platinum system which has a value of delta w of -4250 J/mole; (a) Calculate the enthalpy of mixing for a solution of 10% platinum and 90% gold. Express your answer in units of kJ/mole. (b) Is the dissolution of 10% platinum into gold an

15. ## Chemistry

Answer the following questions by referring to the Cu-Al phase diagram shown below. (a) What is the lowest temperature at which a liquid can be found in a system of any composition of Cu-Al ? (b) A common alloy composition used in airplanes is 4 at. % Cu -

16. ## math problem

To make an orange dye, 4 parts of red dye are mixed with 3 parts of yellow dye. To make a green dye, 2 parts of blue dye are mixed with 1 part of yellow dye. If equal amounts of green dye and orange dye are mixed,___________ of this mixture is composed of

17. ## Intermediate college algebra

Beer cans are right circular cylinders. My algebraic ale and logarithmic lager cans, from snide brewery, have dimensional units called brewskis. The have a volume (in cubic brewskis) equal to the solution of the number of grams of radium 226 remaining

18. ## Chemistry

Check? Answers On bottom. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond When an atom gains or loses valence electrons and becomes charged, it is known as

19. ## health

what factors you would discuss when organising a visit with a client in health care

20. ## health

address performance issues in service delivery in health care

21. ## maths --plse help me..

factorize x^3-3x^2+3x+7

22. ## calculus

find the area of triangle such that area is maximum

23. ## Chemistry.

How do I calculate the internuclear distances for KF, KCl, KI, and KBr?

24. ## calculus

find the sides of triangle such that area is maximum.

25. ## maths --plse help me..

solve the following equation by method of completing the perfect square:- 4x^2 + 4 √3 x +3=0

26. ## Math

A student rolls three standard six-sided dice. What is the probability that the sum of the numbers that come up will be 18?

27. ## discrete structure

Assume that Adam has 4 books to be bought. For each book, Adam can buy it from 3 different shops. Further assume each shop is unique. Using graph/tree graph,show the possible ways to buy all books starting from book 1 to book 4 in sequence.

28. ## physical sciences

The density of mercury is 13.54 g/cm3. Suppose you need 40 gm of mercury for an experiment. What volume of mercury do you need?

29. ## income tax

Which of the following expenses is deductible, but subject to the 2% limitation on Form 1040, schedule a;job expenses and most other miscellaneous itemized deductions? a. a blue suit for an accountant b. appraisal fees on the sale of a personal residence

30. ## geometry

Benji is 55 ft from the base of his apartment building in New York when he spots his friend, Ronny, in the apartment building 150 feet up on the 15th floor. From where he is standing, what is the angle of elevation when he looks up at Ronny? Round to the

31. ## income tax

In 2011, the Chens' pleasure boat was severely damaged by a hurricane in an area that was declared a federal disaster area. they had AGI of \$110,000 in 2011. The following information relates to the craft: Cost basis \$95,000 FMV before casualty 145,000 FMV

32. ## science

Two point charges are placed on the x-axis a follows: charge q1= +4.00nC is located at x=0.200m, and charge q2= +5.oonC is at x=-0.300m. What are the magnitude and direction of the total force exerted by these two charges on a negative point charge q3=

33. ## Sociology

what is the importance of identifying norms within a team and Why is clear communication considered an essential element during team developement?

34. ## English writing

Please ASAP can someone give me an introductory paragraph on the Truman show and the giver with the title and author and the thesis statement ? Please just an idea I need help

35. ## Math

The population of town A increases from 1,346 to 1,500. In the same period, the population of town B increases from 1,546 to 1,800. a. Find the percent of increase in population for town A and for town B. b. Which town had the greater percent of increase?

36. ## trigonometry

4.if cotθ = -√15/7 , use the fundamental identities to find cosθ > 0 9.A projectile is fired with an initial velocity of 88 ft/sec at an angle of 35° to the horizontal. Neglecting air resistance, what is the time of impact? (Round to the nearest

37. ## physic

Light is shone on a metal and photoelectrons are emitted. Can you tell me the three things from the list below which might cause the photoelectron emission to stop. Decreasing the intensity of the light Increasing the frequency of the light Decreasing the

38. ## trigonometry

5. Find the complete exact solution of sin x = -√3/2. 9. Solve cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places. 21. Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two decimal places. 22. Prove that tan^2a –

39. ## chemistry - exam practice help!!

Given the table below predict the numerical value of the standard cell potential for the reaction: 2 Cr(s) + 3 Cu2+(aq) 2 Cr3+(aq) + 3 Cu(s) Half Reaction E (volts) (1) Cr3+ + 3 e- Cr E= -0.74 (2) Cr3+ + e- Cr2+ E=-0.41 (3) Cr2O72- + 14 H+ + 6 e- 2 Cr3+ +

40. ## physics

Two particles are fixed on an x axis. Particle 1 of charge 47.9 μC is located at x = -5.87 cm; particle 2 of charge Q is located at x = 32.3 cm. Particle 3 of charge magnitude 52.8 μC is released from rest on the y axis at y = 15.1 cm. What is the value

41. ## Physics

a hockey player accelerates a puck (m=.167 kg) from rest to a velocity of 50 m/s in 0.0121 sec. Determine the acceleration of the p7uck and the force applied by the hockey stick to the puck. Neglect resistance forces.

42. ## Physics

a bike passes a lamp post at the crest of hill at 4.5 m/s. she accelerates down the hill at the rate of 0.04 m/s squared for 12 seconds. how far does she move down the hill during this time ?

43. ## trigo math

7. Prove that tan B sin B + cos B = sec B. 11. Prove that tanλ cos^2λ +sin^2λ/sinλ = cos λ + sin λ. 12. Prove that 1+tanθ/1+tanθ = sec^2θ+2tanθ/ 1-tan^2θ. 21. Prove that sin^2w-cos^2w/ tan w sin w + cos w tan w = cos w – cot w cos w.

44. ## chemistry - exam practice help!!

For the cell shown below, which will increase the cell voltage the most? Fe2+ | Fe3+ || Cu2+ | Cu A) Halve[Cu2+] B) Double[Cu2+] C) Double[Fe2+] D) Halve[Fe2+] E) Cut Cu electrode in half ... Ecell = E0 cell + 0.059/n * log([Cu+]/[Fe2+]) Ecell is directly

45. ## chemistry

Check? Answers On bottom. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond When an atom gains or loses valence electrons and becomes charged, it is known as

46. ## pre-algebra

the perimeter of a pool is 150m. the width is 1/2 its length. what are the dimensions of the pool

47. ## chemistry

Check? Answers On bottom. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond When an atom gains or loses valence electrons and becomes charged, it is known as

48. ## Math

What is the value for n : 3n-8=32-n

49. ## Spainsh

Help? Which word in a sentence or phrase determines the gender of its descriptors? A. adjective B. verb C. noun D. infinitive E. stem F. conjugation

50. ## Math

If 2 cups of rice requires 4.5 cups of water, what is the total number of cups of water needed to prepare 5 cups of the same rice?

51. ## Math

In the Ambrose family, the ages of the three children are three consecutive even integers. If the age of the youngest child is represented by x+3, which expression represents the age of the oldest child? (1)x+5 (2)x+6 (3)x+7 (4)x+8

52. ## geometry

find the measures bc and ac

53. ## Math

The graph of the equation 2x+6y=4 passes through point (x,-2). What is the value of x?

54. ## Math

What is the verbal expression of 2(n-6)?

55. ## maths --plse help me..

The pilot of an aircraft flying horizontally at a speed of 1200 Km/hr observes an angle of depression of a point on the ground changes from 30 degree to 45 degree in 15 seconds. Find the height of the aircraft at which it is flying?

56. ## Math help algebra HELP plz

Solve A collection of dimes and quarters is worth \$7.65. There are 45 coins in all . How many of each are there?

57. ## Spainsh

Check? Choose the correct option to complete the sentence Choose the correct option to complete the sentence 1. Marco y Ana ______________ en Acapulco por 3 semanas A. estuvo B. estuvieron C. estuvimos D. estuvisteis My answer: A Yo no _____________

58. ## Algebra help PLZ NOW

Graph the following equation : 2x-3y=-6

59. ## NEED Help math

Graph this equation : X=-3 on a graph PLZ and show how you did it please

60. ## Math

The perimeter of a rectangle is 82 yards. The length is two yards more than the width. Find the dimensions of the rectangle.

61. ## US History

What was the purpose of the Washington Naval Disarmament Conference and the Kellogg-Briand Pact? What prompted them? Was the purpose accomplished?

62. ## Mathsa

Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1)

63. ## Mathsa

Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1)

64. ## maths --plse help me..

The angle of elevation of the top of a tower as observed from a point on the ground is alpha and on moving a meters towards the tower, the angle of elevation is beta .prove that the height of the tower is a (tan alpha*tan beta)/(tan beta - tan alpha)

65. ## physics

A particular guitar string is supposed to vibrate at 210Hz , but it is measured to vibrate at 220Hz By what percent should the tension in the string be changed to correct the frequency?

66. ## Math HELP

Write the equation of the line (in slop/intercept form) that has a slop of 7 and goes through the point (6,4).

67. ## Physics

A sound wave is traveling in warm air when it hits a layer of cold, dense air. If the sound wave hits the cold air interface at an angle of 23 degree angle, what is the angle of refraction? Assume that the cold air temperature is -10 degrees C and the warm

68. ## chemistry

Internal energy is denoted by the letter U. true/false false

69. ## I don't know the quadreatic formula for this

X^2 x+2=82, x^2+2x=82

70. ## Mathv

4. Graph the inequality: x ≤ –2 (1 point)

71. ## Math story problem

Melissa and Emily leave by car from the same location traveling in opposite directions. Melissa leaves at 4:00 traveling at 55mph. Emily leaves at 5:00 traveling at 60 mph. At what time will they be at 325 miles apart?

72. ## kbMath

5.   4x + 2 = x + 8.  (1 point) x = 4 x = 3 x = 2 x = 1 Solve the inequality. 6.   q – 12 ≥ –13  (1 point) q ≥ 1 q ≥ –1 q ≥ 25 q ≥ –25 7.   12p < 96  (1 point) p < 8 p < 108 p < 84 p < –8 8.    < –18  (1 point) g <

73. ## Mathforme

5. 4x + 2 = x + 8. (1 point) x = 4 x = 3 x = 2 x = 1 Solve the inequality. 6. q – 12 ≥ –13 (1 point) q ≥ 1 q ≥ –1 q ≥ 25 q ≥ –25 7. 12p < 96 (1 point) p < 8 p < 108 p < 84 p < –8 8. < –18 (1 point) g < –23 g > –90 g > 90 g < 90 9.

74. ## Please help me out I can't figure out how to do th

Graph this equation: x=-3 PLZ show the steps of how you got it.

75. ## Math

Merchandise inventory purchases for a firm for a three month period are: January :2,000 units @ \$12 per unit; February 1,800 @ \$14 per unit; march 2,600 units @15 per unit. What is the mean unit cost of merchandise inventory? A.\$12.82 B.\$13.33 C.\$13.78

76. ## MATH help PLZ sole for x:

Solve for x: X-1/x = 3x/x-2

77. ## Economics

Given the following information calculate the Marginal Revenues. I am getting lost on the order because I know the formula is change in TR/change in Q. Q Price TR 60 26,000 (60x26K) = 1,560,000 70 22,000 (1,540,000) 80 18,000 (1,440,000) 90 14,000

78. ## Math storie problem

The perimeter of a rectangle is 82 yards. The length is two yards more than the width. Find the dimensions of the rectangle.

79. ## chemistry

Which of the following best describes the heat engine? A. A heat engine works through the conversion of energy in the form of heat to mechanical work. B. A heat engine works through the conversion of energy in the form of heat to chemical work. C. A heat

80. ## chemistry

Which of the following best describes the Carnot cycle? A. It represents one of the least efficient cycles for converting thermal energy into work. B. It represents one of the most efficient cycles for converting thermal energy into work. C. It represents

X^2-4x-24=0

(x-4)^2=12

83. ## Math help

Find the width of a recctangle that has a length of 48 cm a diagonal of 50 cm.

84. ## How do I solve for w

W^2+48^2=50^2

85. ## math (precalc)

Point S is 4 km west of point R, and point T is 4 km southwest of S. Find the bearing and distance from R to T. (If possible, show diagrams too, please! Thanks in advance.)

86. ## labor relations

to most effectively increase its percentage of the labor force in the 1990s, the union movement should increase its appeal to:

87. ## Math

3x – 7y < –21 how would I graph this? Please help.

88. ## physics

A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.100 . Suddenly, the plane accelerates forward, its altitude remaining constant. What

89. ## accounting

. Della purchased a commercial warehouse which has a 39 year life on February 25, 2011, for \$350,000. \$45,000 of the price was for the land. What is her depreciation deduction for 2011

90. ## accounting

On November 30, 2011, Constance purchased an apartment building for \$750,000. Determine her depreciation deduction for 2011

91. ## accounting

Georgia owns a home in Colorado that she rents for \$1,200 per month that she does not use personally. While she was in Europe for Christmas, the roof in her house leaked and her tenants repaired it for \$900. For the following month's rent (January), her

92. ## English

What does ATLEAST mean if the number is 360? A.) 360 and less B.) 360 and more

93. ## Math help plz

To determine the number of fish in a lake , a conservationist catches 500 fish, tags them, and releases them into the lake. Later, 120 fish are caught and 25 of them are tagged. Estimate the number of fish in the lake.

94. ## Computer

Why are zombie processes dangerous for long running server program?

95. ## Math help give an example

The equation of a line that passes through (0,0)

96. ## Math help give an example

The equation of a line that is perpendicular to the line y=-7x+4

97. ## Spanish

Check this answer? Which letters exist in the Spanish alphabet, but not in the English? A. ll B. ch C. ñ D. s E. none of the above F. a,b,& c only My answer was : B

98. ## Math help storie problem

Dave buys 3 green peppers and 2 red peppers for \$3.45. Ruth buys 4 green peppers and 3 red peppers for \$ 5.00. Find the price of each variety of pepper.

99. ## Math

An open box is to be made from a 11 inch by 11 inch piece of cardboad. this box is constructed by cutting squares that measure x inches on each side from the corners of the cardboard and turning up the sides. Use a graphical calculator to find the height

100. ## Spanish

Spanish ?? Mandatos informales . Check Please, Answers are on the bottom of the page. 1) Choose the correct informal command for the following verb (Ayudar) ___________ a tu hermano A. Ayudas B. Ayudes C. Ayuda D. Ayude E. Ayudó F. Ayudaba 2) Choose the

101. ## Health

One desirable behavioral objective of a nutrition education activity is for children to: a.identify nutritional strengths of the food b.clean all spills immediately c.taste the food that has been prepared d.classify the food in its appropriate food group

102. ## Algebra 2

The numbers iã5 and -iã5 are solutions to which equation? a. x^2+ã5=0 b. x^2+5=0 d. x^2-5=0

anybody can help me for this situation?? • Monitor Transport Maintenance: In order to guarantee the safety of all our customer, the condition of each vehicle must be in good shape throughout their service. Developer should propose an effective method of

104. ## Math help give example

A third degree polynomial of one variable with four terms written in descending order

105. ## Algebra 2

Simplify. (2-5i)-(3+4i)

106. ## MATH help PLZ provide an example

An illustration of the associative property of addition provide an example

107. ## MATH help PLZ provide an example

An illustration of the associative property of addition provide an example

Dave buys 3 green peppers and 2 red peppers for \$3.45. Ruth buys 4 green peppers and 3 red peppers for \$ 5.00. Find the price of each variety of pepper.

109. ## Help Please!! Health

Which one of the following major concepts is NOT included in the conceptual framework on which education nutrition is based? a.nutrition is how the body uses food b.food is composed of nutrients required for health c.every person needs a variety of

110. ## Math

Is the ordered pair (0,0) a solution of the direct variation equation y=kx ?

111. ## biology

genetic engineering can provide a variety of advantages and disadvantages to today's society. what are current scientists more likely to learn from transgenic animals than from transgenic bacteria or transgenic plants?

112. ## MATH HELP Algebra

An illustration of the associative property of addition provide an example

113. ## science

in pea plants yellow peas are dominant over green peas. a particular pea plant has one recessive allele for green peas. in which of the following scenarios would the plant have green peas?

114. ## Algebra help

Dave buys 3 green peppers and 2 red peppers for \$3.45. Ruth buys 4 green peppers and 3 red peppers for \$ 5.00. Find the price of each variety of pepper.

115. ## Differential Calc (Math)

Stuck... can't seem to use l'hopitals, nor can I use logrithmic differentiation... lim (e^(2x)+ x)^(1/3x) x->0+ Thank you so much

116. ## math

I have a diagram of an occupied building space within a larger building represented by 49 equal squares but no linear measures for the sides. The space is 120,000 sq ft. how can i estimate the lengths and widths of the floor space with just this

117. ## Business Ms.Sue

Paul Smith is opening a plumbing supply store in University City .He plans to sell plumbing parts and material to both wholesale and retail customers. Since contactorors prefer to charge parts and materials and pay at the end of the month, Paul expects he

118. ## ap world history

What was the nature and extent of the Umayyad Empire? How do you answer this question? What's an empire's nature? HELP PLEASE!

119. ## Science

If an object with a density of 0.8 g/cc is placed in pure water is it correct that 80% of the object will be below the water line and 20% of the object will be above the water line?

120. ## vocabulary

for the words listed below,write an additional word that is part of the same word family.

121. ## math

Calculat the absolute value of: 4-{x-3}=0 PS. The brackets are supposed to be the straight lines for the absolute symbols.

122. ## Science

Is it incorrect to use g/ml as the unit for the density of a solid object? I thought g/ml and g/cc were the same.

123. ## math helpp!!!

Bernie put in a garden in her back yard. The garden has a perimeter of 265 feet. She wants to know the total surface area of the garden and all she knows is the perimeter and that the width is 20% or (1/5) of the length. (Remember 20% and the fraction 1/5

124. ## help math!!!

A boat travels down the river in 2.3 hours. The return trip up river takes 3.7 hours. A one way trip down or up river is a distance of 26 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need

125. ## math hurry please

Each child ticket for a ride costs \$3, while each adult ticket costs \$5. If the ride collected a total of \$115, and 33 tickets were sold, how many of each type of ticket were sold? A. 8 child and 25 adult B. 17 child and 16 adult C. 156 child and 41 adult

126. ## Help please!!health

After a meal at a child care center ,the left over hot food that has been in serving bowls that have been on the table should be: a.chilled, refrigerated and used at another meal b.reheated, cooled and frozen for later use c.discarded d.heated in a

127. ## Pschology

what are some sources for mental health treatment in Canada?

How many solutions are there to the following system of equations? 2x – y = 2 –x + 5y = 3 A. 0 B. 1 C. 2 D. infinitely many

129. ## EPCC

how to calculate the heat (kJ) released to thesurroundings when a 23.0 g of HCL if formed, from a CH4 + Cl2=CHCl3+3HCL

130. ## english

Hello, I have to do an essay on what specific actions should a Christian do to protect the environment. I am having issues looking up resources thanks

131. ## algebra 2

how can i solve this help please show the step 3square rood of 64x^4

132. ## Geometry- Preferably Ms. Sue

Lucinda wants to build a square sandbox, but she has no way of measuring angles. Which of the following explains how she can make sure the sandbox is square by measuring only length? A)Arrange four equal-length sides, so the diagonals bisect each other.

133. ## math

what is the lcm of 11 5 and 4 please help

134. ## Analytic Geometry

Please help me to solve this problem. Find the equation of the locus of a moving point if the sum of the slopes of the line joining it to (1,3) and (4,-2) is 1.

The Hershey-Chase experiment proved that DNA was the hereditary material because? A)radioactive phosphorus in viral proteins was shown not to enter bacterial cells. B)radioactive phosphorus in viral DNA was shown to enter bacterial cells. C)radioactive

136. ## math

I don't understand how to do my math homework. 7 over 6. (-18 over 35)

137. ## geometry

In triangle GHJ and triangle KLM, it's given that

asked by sherianna johnson
138. ## science

what is the probable relationship between the rebound centers and the thickness of ice in canada

139. ## math

Suppose you invest \$700 at an annual interest rate of 7.6% compounded continuously. How much will you have in the account after 1.5 years?

140. ## calculus

Calculate the area between curves y=e^x and y=-e^x on the interval [0,1]

141. ## calculus

determine the cubic function with 1 point of inflection and no relative minima or maxima.

142. ## calculus

the area of a rectangle is A=lw. Further suppose l=2w. calculate dA in terms of the differential dw. does this just mean to get the derivative of 2w^2

143. ## geometry

find the equation of the line through (6, -3) and (-4, -7)

144. ## Chemistry

A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00 g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment 0.1107g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894

145. ## univ. physics

A heat pump has a coefficient of performance of 4.5. If the heat pump absorbs 46.1 cal of heat from the cold outdoors in each cycle, what is the amount of heat expelled to the warm indoors? (in cal)

A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00 g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment 0.1107g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894

147. ## Science

Does the weight on a Bridge affect the amount of shaking it endures during an earthquake?

148. ## statistics

Describe a hypothesis related to the area of psychology in which you are predicting an interaction. Describe the specific nature of the interaction and why you think an interaction would occur.

149. ## statistics

What is the advantage of using a two-factor design rather than conducting two separate studies, each investigating one of the factors?

150. ## English

CHECK PLEASE?! Part 1: Poem Structure "Annbel lee" by edgar allen poe In this part, you will analyze the structure of the poem. Please fill out the following. Title of Poem:Annabel lee Poet: Edgar allen poe Theme: potrait Type of Poem:Narrative poetry

151. ## Fraction

So I have figured this out but I don't think this is the way I am suppose to write the equation fraction out. 8 1/2 years ago, Steven was 7 years old. How old is he now? Do I write it out like this 8/1 + 1/2 + 7/1 ??? But it comes out too high of a number.

152. ## windows 7

A____ searchs the web for information related to the text you select. A. web archive B.In private browser C. accelerator

1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the

154. ## Pre-cal

f(x)= x+1 and g(x)= square root of x-3 please help me!

155. ## math

4 students are sitting to receive the prizes.Alan and Julia wanted to sit together, how many different arrangements of students would there be ?

156. ## Biology

Do you think the Dough will rise the fastest in the sample with the highest , the lowest , or a moderate concentrate of sugra?

157. ## Physics help!

Suppose a revolving door at the bamk is spinning around once every 5 seconds. As you walk through, you push on the door for 2 seconds, which increases the rotational speed so that it rotates once a second. What was the rotational acceleration due to your

158. ## Physics

You need to open a heavy door that's 40 inches wide. Instinctively, you push near the edge that's the farthest from the hinges. If instead, you had pushed at a point only 10 inches in from the hinges, how much harder would you have had to push to open the

159. ## Physics

A crowbar lever , with a 3 inch long nail remover connected to a 20inch handle. If you push down on the handle end with a force of 40 N, what force is available to remove a nail? HINT: a Crowbar isnt all that different from a seesaw, except the pivot is

160. ## math

Find the fraction of these whole numbers 1/2of 10

161. ## Physics

How much work is done to the wagon by the girl pulling her brother shown in Figure 4.16, if she travels 25 m? F= (50N), 30 DEGREES ANGLE

162. ## math

it says to find a fraction of these whole numbers 1/2 of 10 has to be a fraction

Suppose a revolving door at the bamk is spinning around once every 5 seconds. As you walk through, you push on the door for 2 seconds, which increases the rotational speed so that it rotates once a second. What was the rotational acceleration due to your

164. ## English

Edgar Allen Poe. What have you learned about the poet that contributes to the type of poetry he writes?

165. ## algebra

there was a total of 840 guests at a wedding dinner. 60% of them were adults, and the rest were children. some boys left before the dessert was served. as a result, the percentage of adults increased to 70%. how many boys left before the dessert was served

166. ## Science

if the wood in the bowl contains only 1/16 of its original C-14, then its age is four half-lives of C-14.

167. ## math

Triangle HIJ is similar to triangle LMN. Side LM measures x + 1, side MN measures 2x and side NL measures 3x – 1. Side HI measures 12 and side JH measures 26.4. Find the value of x

168. ## physics

a car of mass 12,000 kjg is moving at 40m/s along a strong road. The driver brakes and the car goes 800 meters before stopping. What was the magnitude of the average force of friction (inN) between tires and road?

is this a good story She left that morning, taking all she could with her clothes, money, phone; as she headed toward the straggle subway as she bounded many people screamed at her and told her names but she didn’t care she was so lost in this maroon

170. ## Biology

List two ways that these single - celled fungi are different from bac-terial cells?

171. ## Statistics

I'm having a problem with this problem. Please help. Thank you.. Find the probability that more than 13 people will read the morning newspaper..

172. ## math

x+3+7=5(x-4) solve for x?

173. ## math

3 - 2 x _____ = 1 ? please explain how to answer

174. ## book/movie report

My teacher said that we needed to do a book report or a movie report. 1. Can someone post a website of book reports and movie reports. I wanted to do a report on Hunger Games but the book version and movie version is different.

175. ## 7/8 Math URGENT!!! PLZ HELP!! ANYONE????

Could ANYONE please explain this formula to me and what the words mean... I=prt (Intrest= principle x rate x time)

176. ## math

Express each ratio as a unit rate.Round to the nearest tenth, if necesary. A: 400 feet in 52.4 seconds B: 184 meters in 38 seconds

177. ## math

Find two consecutive even integers such that the square of the smaller is 10 more than the larger.

178. ## chemistry

10. If the calcium oxide were obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 15.0 g? 11. If the 15.0 g of calcium oxide in the above problems were allowed to react with water, what amount of calcium hydroxide

179. ## math

A necklace, priced between \$50 and \$100, was on sale at 25% off. When the original price (a whole dollar amount) was discounted, the sale price was also a whole number of dollars. What are the possible original prices for the necklace?

180. ## everest

In Weeks 9 and 10, you will develop an essay using definition as the rhetorical strategy. This week, you will develop an introductory paragraph for your definition essay, including a thesis statement. To complete this assignment: Choose a term related to

181. ## Chemistry

15. 120 g of sulfuric acid are added to 230.0 g of barium peroxide. Which reactant is in excess and by how much? How much barium sulfate is precipitated in this reaction???? HELP please

You need to open a heavy door that's 40 inches wide. Instinctively, you push near the edge that's the farthest from the hinges. If instead, you had pushed at a point only 10 inches in from the hinges, how much harder would you have had to push to open the

A crowbar lever , with a 3 inch long nail remover connected to a 20inch handle. If you push down on the handle end with a force of 40 N, what force is available to remove a nail? HINT: a Crowbar isnt all that different from a seesaw, except the pivot is

184. ## physics

An electron is accelerated from rest to a velocity of 2.0x10^7 m/s. a) if the electron travelled 0.10m while it was being accelerated, what was its acceleration? b)How long did the electron take to attain its final velocity? Please correct me if I'm wrong

185. ## AIG MATH

The weight of Meg's dog is 2 1/2 times more than that of her cat. If both animals weight 42 lbs, find the weight of each animal?Please show your work.

186. ## Chemistry

How many grams of carbon dioxide can be obtained from the action of 100.0 g of sulfuric acid on 100.0 g of calcium carbonate?? I need helpim stuck!

187. ## math

Jennifer is 16 and grandfather is 72.How many years ago was her grandfather 5 times as old as Jennifer

188. ## math

the cost of 2 televisions and 3 dvd players cost 1421 dollars the cost of 1 dvd player is half the cost of of 1 television what is the cost of 1 television. How you could slove in simple math

189. ## calculus

for the given functions f&g, find the following and state the domain of each result. f(x)=5x+4/7x-8; g(x)=2x/7x-8 a.(f+g)(x)= ? what is the domain? b. (f/g)(x)= ? what is the domain? Please show work

190. ## PHYSICS NEED HELP PLEASE

You need to open a heavy door that's 40 inches wide. Instinctively, you push near the edge that's the farthest from the hinges. If instead, you had pushed at a point only 10 inches in from the hinges, how much harder would you have had to push to open the

191. ## math

If a pastry chef has 13 lbs of apple slices to make 8 apple pies if slices are distributed equally what will be the wright of the apple slices used to make eavh pie

192. ## jmhs help

Which of the following statements about learning styles is false? A. An individual should study using techniques that utilize his or her preferred learning style. B. An individual can learn using only his or her preferred learning style. C. Understanding

193. ## math

There are 10 cups of punch left in the punch bowl. Each glass holds 2/3 of a cup.how many glasses can you fill?

194. ## Algebra

Please help!!! im not sure what it is asking or how to answer it! In what situations would you use the mean to summarize a set of data? The median?

195. ## Please I'm begging someone help me with biology

I need help with listing two ways that single - celled fungi are different from bac-terial cells??? I'm so clueless I'm begging anyone to help me thanks

196. ## Please I'm begging someone help me with biology

I need help with listing two ways that single - celled fungi are different from bac-terial cells??? I'm so clueless I'm begging anyone to help me thanks

197. ## vocab

This summer, local children can sigh up for art class or music lessons for a confiscate fee of \$3. It's impossible to take both, though, since the classes will be recession

198. ## math

if bob uses x eggs for every 200 grams flour. How many eggs does he use if he uses 900 grams flour?

199. ## Earth Science

Computer models of Earth's climate project increases in the average temperature from 2°C to 6°C by the end of the century. Have these high temperatures ever occurred before in the past 400 000 years?

|1.5C-24|

201. ## hunger games/ book review and movie review

How long is a book review? What is the difference between hunger games book review and hunger games moview review?

202. ## math ALG 2!

Four times a certain number is the same as the number increased by 78. Find the number.

203. ## physics

A swimmer swims in still water at a speed of 6.83 m/s. He intends to swim directly across a river that has a downstream current of 2.89 m/s. (a) What must the swimmer's direction be?

204. ## physics

A hunter wishes to cross a river that is 2.5 km wide and that flows with a speed of 6.0 km/h. The hunter uses a small powerboat that moves at a maximum speed of 9.8 km/h with respect to the water. What is the minimum time necessary for crossing?

205. ## physics

The pilot of an aircraft wishes to fly due west in a 46.8 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 204 km/h. (a) In what direction should the aircraft head? ° north of west (b) What should its speed

206. ## physics

A river flows due east at 1.50 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 9.2 m/s due north relative to the water. (a) What is the velocity of the boat as viewed by an observer on the shore?

207. ## Physics

An arrow is shot straight upward at 55 m/s. a) find the time until the arrow reaches its peak b)how high was the arrow at its peak c)find the total time the arrow is in the air d)what was the velocity of the arrow after 3.5 seconds e)how high was it at 3.5

208. ## Physics

An arrow is shot straight upward at 55 m/s. a) find the time until the arrow reaches its peak b)how high was the arrow at its peak c)find the total time the arrow is in the air d)what was the velocity of the arrow after 3.5 seconds e)how high was it at 3.5

209. ## 7th grade language arts Ms. Sue please

1. If you were writing a persuasive essay about the need to install solar panels on top of big apartment buildings, what counterargument should you address? (1 point) Homeowners can get tax breaks for installing solar panels on their homes. People are

210. ## physics

A place kicker must kick a football from a point 32.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 20.8 m/s at an angle of 53° to the horizontal. (a)

211. ## physics

A shell is fired from the ground with an initial speed of 1.54 103 m/s at an initial angle of 46° to the horizontal. (a) Neglecting air resistance, find the shell's horizontal range. m (b) Find the amount of time the shell is in motion. s

212. ## Physics

An arrow is shot straight upward at 55 m/s. a) find the time until the arrow reaches its peak b)how high was the arrow at its peak c)find the total time the arrow is in the air d)what was the velocity of the arrow after 3.5 seconds e)how high was it at 3.5

213. ## physics

A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 4.2 m waterfall. If the spy's speed is 20 m/s and the officials' speed is 24

214. ## physics

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 16 m/s. The cliff is h = 60 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? s (b) With what speed

215. ## physics

A person walks the path shown below. The total trip consists of four straight-line paths. Path 1 is 80.0 m due east. Path 2 is 250.0 m due south. Path 3 is 130.0 m 30.0° south of west. Path 4 is 190.0 m 60.0° north of west. At the end of the walk, what

216. ## HUNGER GAMES

For the hunger games books. Theres catching fire and mocking jay??? what are both of the books about? I only read the first book and only saw the movie

217. ## math ALG 2!

A blue bike is \$14 less than a red bike. The sum of their prices is \$300. How much is the red bike?

218. ## Math alg2!

1.)Mike is 5 years more than twice as old as Tom. The sum of their ages is 65. How old is Mike? 2.)Mrs. Computer is 3 times older than her daughter, Mousy. The sum of their ages is 52. How old is Mousy?

219. ## math ALG 2!

Find three consecutive integers such that the sum of the second and the third is 17. Which equation would be used to solve this word problem? a.) x + (x + 1) + (x + 2) = 17 b.)(x + 1) + (x + 2) = 17 c.)x + (x + 2) + (x + 4) = 17 d.) 2(x + 2) + 3(x + 4) =

what is the adverb and the adjective that it modifies inb this sentence? In spite of her defeat, she was not sad at all.

221. ## math

HOW TO FIND THE DECIMAL EQUIVALENT TO A MIXED FRACTION?

222. ## aig math

Jenny,Bob and Paul share a sum of money. Jenny received 2/5 of the money, Bob received 1/4 of the money and Paul received the rest of the money. If Paul received \$1.50 more than Bob, how much more money did Jenny receive than Paul.

223. ## Statistics

please help having difficulty with this problem. It was noted that 40% of the people in Dallas read the morning newspaper. A random sample of 18 people is selected from the city. On average, how many people would you expect to read the morning newspaper in

is this a good story can i get ideas She left that morning, taking all she could with her clothes, money, phone; as she headed toward the straggle subway as she bounded many people screamed at her and told her names but she didn’t care she was so lost in

I am really stuck in this biology it super hard how do yeast cells benefit from fermentation ?I wil be happy if anyone would help me out thanks.

226. ## book report

THis is how I setted up for the heading: Title: Hunger Games Author: Suzanne Collinns Rank: You should definitley read this! ______ : Celest In the blank what word do I put?

227. ## English

Check? 1. What action is happening in the poem? Is there a story taking place in the poem? Is the poet reacting to an event? Describe. Edgar is describing his future love. They were only kids when they met, but Edgar knew he loved her. His is telling the

228. ## math

4/5 of x = \$12.52. what is x?

229. ## physical science

In 300 words or more explain the similarities and differences between ionic, covalent, and metallic bonding.

230. ## Math 9 pleese help me thanx

The cube of the sum of 5 an 2 is decreased by the square of the product of 6 and 4. Write an expression that models this statement. Then , solve.

231. ## Math

What is 3/4 divided by 2/3?

232. ## Physics

Two long, straight, parallel wires carry current in the same direction. If the wires are 24 cm apart and carry currents of 2.0 A and 4.0 A, respectively, find the force per unit length on each wire? I'm not really sure how to go about this. I must be

233. ## Division

If you have 43 marbles. You divide them equally among some sacks. How many sacks must you use to get fewer than 8that marbles in each sack?

234. ## Chemistry

How many electrons are there in the unipositive ion of Cs-136 (#55)? How many neutrons?

235. ## calculus

find the rate of change of f(x)-x^2+4 a. from -2 to 0 b. from 1 to 3 c. from -2 to 1 please show work

236. ## art through the ages

Compare Raphael’s School of Athens to Veronese’s Christ in the House of Levi. Explain how each artist reflected the political and social environment of Rome and Venice during the Renaissance period

237. ## Math

x+4+2x=-1-5+5x-4x

238. ## Algebra

A rectangle is drawn so the width is 7 inches longer than the height. If the rectangle's diagonal measurement is 46 inches, find the height.

239. ## Division

If you have 43 marbles. You divide them equally among some sacks. How many sacks must you use to get fewer than 8that marbles in each sack?

240. ## I really need help in science please anyone thanks

Since fermentation occurs in the cytoplasm of yeast cells explain the role of mitochondria in yeast cells ? If anyone can help me this I will truly be graceful

241. ## trig

evaluate the following in exact form, where the angeles alpha and beta satisfy the conditions: sin alpha=4/5 for pi/2 < alpha < pi tan beta=7/24 for pie < beta < 3pi/2 answer choices A. sin(beta+alpha) B. tan(beta-alpha) C. cos(alpha-beta)

242. ## calculus

write the function whose graph is the function of y=(x+5)^2 but is reflected about the x-axis. y=

243. ## SCIENCE

which process does not produce a physical change of state? A) MELTING ICE B) HEATING WATER VAPOUR C) FREEZING WATER D) MY GUESS IS

244. ## Math

If the average of these four numbers is 21, find the missing number. 12, 18, 28, ? What is the missing number and why

245. ## current physics

3 kilo ohms ll 5 kilo ohms = 1.875 kilo ohms

246. ## trig

if tan x= 4/3 and pip < x < 3pi/2, and cot y= -5/12 with 3pi/2 < y < 2pi find sin(x-y)

247. ## chemistry

What are the steps in finding the balanced equation for the complete combustion of benzene?

248. ## calculus

find the function that is finally graphed after the following transformations are applied to the graph of y=square root x in the order listed. a. reflected about the y-axis b. shift down 3 units c. shifht left 9 units please show work

249. ## TO: MS SUE MATH 9

The cube of the sum of 5 an 2 is decreased by the square of the product of 6 and 4. Write an expression that models this statement. Then , solve. THANX

250. ## AD or BC?

Wood fragments from the floor of a palace in Syria - Syro-Hittite period. Date: 675 ± 50 years BCE

251. ## physics

A 443 kg mass is brought close to a second mass of 181 kg on a frictional surface with coeﬃcient of friction 0.5. At what distance will the second mass begin to slide toward the ﬁrst mass? The acceleration of gravity is 9.8 m/s 2 and the value of the

252. ## physics

Tom has a mass of 72.2 kg and Sally has a mass of 49.4 kg. Tom and Sally are standing 17.4 m apart on a massless dance ﬂoor. Sally looks up and she sees Tom. She feels an attraction. If the attraction is gravitation, ﬁnd its magnitude. Assume both can

253. ## Math

Meredith took 15 minutes to unpack 4 boxes of books. If she unpacked a total of 28 boxes, how long did it take her to unpack all the boxes?

254. ## physics

How high does a rocket have to go above the Earth’s surface so that its weight is reduced to 33.7 % of its weight at the Earth’s surface? The radius of the Earth is 6380 km and the universal gravitational constant is 6.67 × 10 −11 N · m 2 /kg 2 .

255. ## physics

An archer puts a 0.34 kg arrow to the bowstring. An average force of 213.1 N is exerted to draw the string back 1.48 m. The acceleration of gravity is 9.8 m/s 2 . Assuming no frictional loss, with what speed does the arrow leave the bow? Answer in units of

256. ## Fund of programming 1

Write a program that prints out your course schedule for a single week. Here's an example of the output for one day: Monday 9:00 Computer Science 101 Monday 11:00 Physics 201 Monday 2:00 Dance 153

257. ## calculus

for the function f(x)=5/x+4, find the average rate of change of f from 1 to x. please show work

258. ## Fund of programming 1

Complete the following C++ program. The program should compute and output the Celsius value corresponding to the given Fahrenheit value. //************************************************ // Celsius program // This program outputs the Celsius temperature

259. ## Pre-Algebra

Grete Waitz won the New York marathon nine times. The rate at which she ran during her last victory in 1988 was 26 miles in 148 minutes. To the nearest hundredth, what was the unit rate for her last race?

260. ## 7/8 Math URGENT!!! PLZ HELP!! ANYONE????

The \$42 shirt came to \$45.87 after tax. What is the tax rate? (%)

261. ## physics

A 443 kg mass is brought close to a second mass of 181 kg on a frictional surface with coeﬃcient of friction 0.5. At what distance will the second mass begin to slide toward the ﬁrst mass? The acceleration of gravity is 9.8 m/s 2 and the value of the

262. ## calculus

find the function that is finally graphed after the following transformations are applied to y=square root x in the order listed. a. reflected about the x-axis b. shift up 7 units c. shift right 5 units y=? would the answer be: y=sqrt(-x-5)-7

263. ## Chemistry

How many grams of acetic acid must be dissolved to produce 3875 ml with a Ph of 2.9?

264. ## math

No results were found for the search term: At a student conference 12 students were asked to form different committees with the following conditions:1)each committee was to contain exactly 3 students;2)each student was to belong to exactly 2

265. ## calculus

for the following f defined by f(x)=4x^2+3x+2. find the following values. a. f(-2)= b. f(-x)= c. -f(x)= df(x+h)= please show work

266. ## calculus

for the following f defined by f(x)=4x^2+3x+2. find the following values. a. f(-2)= b. f(-x)= c. -f(x)= df(x+h)= please show work

267. ## I NEED HELP ASAP WITH SCIENCE PLEASE IT'S IMPORTAN

Since fermentation occus in the cytoplasm of yeast cells explain the role of mitochondria in yeast cells?

268. ## Physics

Two long, straight, parallel wires carry current in the same direction. If the wires are 24 cm apart and carry currents of 2.0 A and 4.0 A, respectively, find the force per unit length on each wire?

269. ## math

Mr. Frank is planning a parade, First 36 musicians will march and play. Second ,32 soilders will march in uniform; third 28 horses will goin fourth will be clowns . if the pattern continues, how many clowns will walk in the parade?

270. ## Chemistry

10.0g of sodium chloride is dissoved in 300ml of 0.75mol/L magnesium chloride solution. Find the new concentration of chloride ions f the solution.

271. ## Chemistry

10.0g of sodium chloride is dissoved in 300ml of 0.75mol/L magnesium chloride solution. Find the new concentration of chloride ions f the solution.

272. ## 7th grade math Ms. Sue please

1. 7r – 7 = 2r + 18 (1 point) r = –5 r = 5 r = 2.2 r = 1.2 2. 2x + 12 = 18 – x (1 point) x = 3 x = 10 x = 6 x = 2 3. 8x – 3 = 15x + 18 (1 point) x = –3 x = 3 x = 2.1 x = .9 4. 6y – 6 = 4y + 16 (1 point) y = 2.2 y = –2.2 y = 11 y = 5 5. 3(x

273. ## chemistry 100

How do I disassociate Li2CO3 I have tried Li_2CO_3--> 2Li^+ + 3CO^2- What am I doing wrong?

274. ## Math Algebra , high school

A biologist has three salt solutions: some 5% solution, some 15% solution, and some 25% solution. She needs to mix some of each to get 50 liters of 20% solution. She wants to us twice as much of the 5% solution as the 15% solution. How much of each

275. ## Pie Charts

On the pie chart it reads: 1999 U.S. Electricity Generation by Fuel Type (Billion Kilowat hours) Coal: 1882, 51% Natural Gas:565 15.3% Petroleum: 119, 3.2% Nuclear: 728, 19.7% Hydroelectric: 307, 8.3% Other Renewables: 89, 2.5% What was the total amount of

276. ## Algebra II math high school

To get the necessary funds for a planned expansion, a small company took out three loans totaling \$25,000. The company was able to borrow some money at 8%. It borrowed \$2000 more than half the amount of the 8% loan at 10% and the rest at 9%. The total

277. ## physics

A machine part rotates at an angular speed of 0.77 rad/s; its speed is then increased to 1.76 rad/s using an angular acceleration of 0.29 rad/s 2 . Find the angle through which the part rotates before reaching this ﬁnal speed. Answer in units of rad

278. ## Math

Reducing fractions how can I figure out the reduced fraction for 20/10?

279. ## Pre-Algebra

One hundred nautical miles equals about 185 kilometers. To the nearest kilometer, how far in kilometers is 290 nautical miles?

280. ## I REALLY NEED HELP IN SCIENCE Plz !!!

If you double the concentrate of yeast in the dough how do you think your results might change ??? Please I really do need help in this thanks

281. ## Physics

the net external force of the propeller of a 4.0 kg model airplane is 9.5 N forward. What is the acceleration of the airplane? Answer in units of m/s^2

282. ## chemistry

Wat is the volume of a 200g object that has the. Density of 1.27L?

283. ## Pre-Algebra

Carpet Masters charges \$9.50 per square yard to clean a carpet. If you have two rooms with an area of six square yards each, how much will it cost to have the carpets cleaned?

284. ## algebra

what is the horizontal change between (-2,5) and (4,10)

285. ## Chemistry

what is the magnitude and sign of the molar heat of vaporization of butane

286. ## chemistry

Wat is the volume of a 200g object that has the. Density of 1.27L?

287. ## English

Find the plural that has been formed incorrectly. Then write it in its correct plural form. Dad was hoping to catch several bass and trouts for our suppers. I'm not sure if it's "trouts" or "suppers".

288. ## child development

-----------are considered critical at certain times during early growth and development and have growth-inducing influence on the brain's structure. A) Growth spurts B)Norms C)Essential experiences D)Nonessential experiences

289. ## English 3 :/

I need serious help writing a thesis statement and body paragraphs and a conclusion paragraph with 2 quotes and a connotation of the quote for each quote for The Scarlet Letter. Please help!

290. ## math

Joshua has 3 yards of ribbon. He needs 1/4 yard to make 1 bow. How many bows can he make?