# Questions Asked onMarch 2, 2011

1. ## physics

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

2. ## Chemistry

One mole of N2 and three moles of H2 are placed in a flask at 375 C. Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is 0.21. The Kp for the reaction is 4.31*10^4. I assume this to be the reaction N2 + 3H2 --> 2NH3

3. ## chemistry

An unopened soda can has an aqueous CO2 concentration of 0.0506 m (molality) at 25 C. What is the pressure of CO2 gas in the can?

4. ## Chemistry (Stoichiometry)

Magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. a) Write a balanced chemical equation for this reaction. b) What is the percentage yield if 10.1g Mg reacts with an excess of water and 21.0g Mg(OH)2 is recovered? c) If 24g

5. ## Physics

Two identical gliders slide toward each other on an airtrack. One moves at 1 m/s and the other at 2 m/s. They collide and stick. The combined mass moves at ____ m/s. Answer

6. ## physics

A hot-air balloon of mass 200 kg is descending vertically with downward acceleration of magnitude 1.2 m/s2. How much mass (ballast) must be thrown out to give the balloon an upward acceleration of magnitude 1.2 m/s2 (same magnitude but opposite direction)?

7. ## Physics

A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 20°. For a speed of 29 m/s, at what value of the distance d should a driver

8. ## PHYSICS NEED HELP FAST

A power plant has a power output of 1055 MW and operates with an efficiency of 33.0 percent. Excess energy is carried away as heat from the plant to a nearby river that has a flow rate of 1.1 x 10^6 kg/s. How much energy is transferred as heat to the river

9. ## math

a refrigerator is 3 ft wide, 2.5ft deep,and 6ft high. The walls and other parts other refrigerator take up to 20ft. How much cubic feet are left for food?

10. ## physics

Lance threw a ball straight up into the air. The ball's gravitational potential energy at its peak height was 0.4 joules, and its speed when it hit the ground was 4 meters per second. What was the mass of the ball?

11. ## precalculus

A bacteria culture initially contains 1500 bacteria and doubles every half hour. a) Find an expression for the number of bacteria after t hours. Q(t)= b) The number of bacteria after 20 minutes is (the answer must be an integer) c) The number of bacteria

12. ## Biology

A space probe discovers a planet inhabited by creatures !@#\$%^&produce with the same hereditary patterns as those in humans. Three phenotypic characters are height (T = tall, t = dwarf), hearing appendages (A = antennae, a = no antennae), and nose

13. ## accounting

Brianna Moore is an accountant for New World Pharmaceuticals. Her duties include tracking research and development spending in the new product development division. Over the course of the past six months, Brianna noticed that a great deal of funds have

14. ## math

is 5/8 greater than less than or equal to 58%

15. ## math

Liann works in the olde tyme Soda shoppe. The shop sells milkshakes, double milkshakes, and triple milkshakes. A shake uses 1/8 cup of syrup, a double shake uses 1/4 cup of syrup, and a triple shake uses 3/8 cup of syrup. How many shakes of each kind could

16. ## Finance

Ten years ago, Levin Inc. earned \$0.50 per share. Its earnings this year were \$2.20. What was the growth rate in Levin's earnings per share (EPS) over the 10-year period?

17. ## PHYSICS NEED HELP FAST

A 150KG STEEL ROD IN A BUILDING UNDER CONSTRUCTION SUPPORTS A LOAD OF 6050KG. DURING THE DSY THE RODS TEMP. INCREASES FROM 22C TO 47C CAUSING THE ROD TO THERMAALLY EXPAND AND RAISE THE LOAD 5.5mm. FIND THE EGERHU TRANSFER AS HEAT TO OR FROM THE ROD. THE

18. ## math

.045 please convert to a fraction and percent

19. ## Math

A worm up a wall 20 feet high. Each day he climbs 5 feet at night he slips down 4 feet. How many days will it take the snail to get to the top of the wall. Thanks help!

20. ## math

In an intelligence test administered to 1000 childrens the average score is 42 and standard deviation 24.find (i)the number children exceeding the score 60. (ii) the number of the children with score lying between 20 and 40.

21. ## statistics

given that x~n(300,15), find the 70th percentile.

22. ## calculus

a woman exerts a horizontal force of 25 lb on a crate as she pushes it up a ramp that is 10 ft long and iclined at an angle of 20 above the horizontal find the work done on the box

23. ## geometry

Trapezoid JKLM has an area of 54. If RC = 6 feet and ML = 8 feet, find JK.

24. ## chemistry

2.) Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is red, and C is yellow. In the reactions in which they participate, they are reduced to A-, B-, and C- ions respectively, all of which are colorless. When a solution of

25. ## Algebra

write a numerical expression for the phrase & simplify 129 less than -34

26. ## CHEMISTRY

Sulfur dioxide gas reacts with hydrogen sulfide gas to produce elemental sulfur (S8) and water vapor. Predict the temperature range over which this reaction is spontaneous.

27. ## buckeye elementary

name the lengths of the sides of three rectangles that have perimeters of 14 units

28. ## chemistry

In the United States, water used for irrigation is measured in acre-feet. An acre-foot of water covers an acre to a depth of exactly 1 foot. An acre is 4840 yd^2. If desalinated water costs \$1950 per acre-foot, how much does desalinated water cost per

29. ## earth

describe the relationship between mass movement and gravity?

30. ## physics

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

31. ## Can no one help?!

1. Use cylindrical shells to compute the volume of the solid formed by revolving the region bounded by y= 2x and y = x^2 -3 about x= 6. 2. Find the volume of the solid formed by revolving the region bounded by y= e^x , y= e^-x, and y= 3 about y= 5. I'm

32. ## trig

Richard is flying a kite. The kite string makes an angle of 57 degrees with the ground. If Richard is standing 100 feet from the point on the ground directly below the kite , find the length of the kite string

33. ## physics

A hot-air balloon of mass 200 kg is descending vertically with downward acceleration of magnitude 1.2 m/s2. How much mass (ballast) must be thrown out to give the balloon an upward acceleration of magnitude 1.2 m/s2 (same magnitude but opposite direction)?

34. ## Physics

Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who

35. ## chemistry

How many grams of oxygen are required to produce 56.0 g water vapor?

36. ## chemistry

2.) Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is red, and C is yellow. In the reactions in which they participate, they are reduced to A-, B-, and C- ions respectively, all of which are colorless. When a solution of

37. ## chemistry

A buffer is formed by mixing 100 mL of 0.2 M HClO2 and 200 mL of 0.7 M KClO2. What volume of 0.2 M KOH can be added before the buffer capacity is reached?

38. ## Chemistry

One mole of N2 and three moles of H2 are placed in a flask at 375 C. Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is 0.21. The Kp for the reaction is 4.31*10^4. I assume this to be the reaction N2 + 3H2 --> 2NH3

39. ## English

Can you help with writing a paragraph using all these words? Scientist, encourages, limitations, robotics, asthma, and fit. All the words must be in the paragraph.

40. ## Chemistry

What is the molality of a solution composed of 11.1 g NaCl dissolved in 638 g of water? Answer in units of m.

41. ## Math

Use the distributive property to rewrite this expression, then simplify the new expression if possible; -4(z+3)

42. ## Physics

Please help! Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is the temperature change? Explain your reasoning. Thanks

43. ## chem 1 high school

equation: 4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g) What mass of O2 is needed to produce 0.563g of NO? I think the answer is 750g but how do I get that answer?

44. ## psy 101

You believe that most behaviors are a product of your environment; your best friend argues that behaviors are a result of heredity. This is an example of?

45. ## physics

A loaded truck can accelerate at 6.4 m/s^2. It loses its load so that it is only 0.9 as massive. By what factor must the acceleration change for the same driving force?

46. ## math

Girls are one-half of the fifth grade class.Two-tenths of these girls have red hair.Red haired girls are what fraction of the fifth grade class?

47. ## Science

What does a sharp shadow tell us about the way light travels?

48. ## Physics

A 2 kg ball rolls at 2 m/s toward a 1 kg ball at rest. After the balls collide they stick together and move at _____ m/s.

49. ## Geo

A plane P cuts O in a circle that has diameter 20. If the diameter of the sphere is 30, how far is the plane from O?

50. ## Math

A triangle has 2 angles that measure 60 each. Which of the following best describes thiz triangle. A. Right isoseles triangle B. Equilateral triangle C. Obtuse isosceles triangle D. Acute scalene triangle

51. ## law

what is commutative testimony?

52. ## Finance

. Fill out the missing items on the Kim, Inc.’s balance sheet based on the ratios given below: Cash and marketable securities 800 current liabilities ? Accounts Receivables ? Long term Debt ? Inventory ? Equity ? Fixed Assets ? TOTAL ASSETS \$8800 TOTAL

53. ## physics

A Ferris wheel at an amusement park having a diameter of 14 m completes one rotation in 45 s. (a) What is the rotational speed of this Ferris wheel in revolution per minute and in degrees per second?

54. ## physics

please help. a pitcher throws a .50kg ball of clay at a blck of woo. the clay sticks to the wood on impact, and thier joint velocity afterwards is 3.0m/s. what is the original speed of the clay. please help with this question

55. ## math

a monitor displays the graph y = sin 5x. what will be the amplitude after a dilation of 2?

56. ## chemistry

A 40 mL sample of 0.25 M NaCHOO is titrated with 0.2 M HCl. What is the pH of the solution after 140 mL of HCl has been added?

57. ## history

the american dream rising from "rags to riches" was reflected in a. mark twain' novel the gilded age b. novels of social protests c. dime-store novels d. minstrel shows

58. ## physics

A loaded truck can accelerate at 6.4 m/s^2. It loses its load so that it is only 0.9 as massive. By what factor must the acceleration change for the same driving force?

59. ## SCience

whyis frosted glass often used for bathroom windows instead of clear glass or solid wall?

60. ## Commercial

Im trying to find an ad that should be banned, and I came upon this site h t t p : // w w w . fastcompany . c o m /1691071/the-worst-ads-of-2011 And I think that the Progressive: "Flo Dishes Out Discounts" ad should be banned, because it kind of shows Flo

61. ## Geometry

If the length of the altitude of the hypotenuse of a right triangle is 8, and the length of the hypotenuse is 20, what are the lengths of the segments of the hypotenuse? (Let x and 20-x be the lengths of the segments of the hypotenuse.)

62. ## math

how do you solve 355 1/5 55 2/5

63. ## math

A triangle has sides of lengths 48 feet, 55 feet, and 74 feet. Which statement is true concerning this triangle?

64. ## Math

Minimize C=7x+3y+4z 0≤x 0≤y 0≤z 100≤2x+3y+3z 120≤5x+2z Answer: Minimum value of C =?

65. ## College Physics

Vector A points in the negative y direction and has a magnitude of 6 units. Vector B has twice the magnitude and points in the positive x direction. Find the direction and magnitude of vec A-B and Vec B-A?

66. ## algebra

How many solutions does the following system have: 6x - 3y = 9 2x - y = 3 Explain how to determine the number of solutions without solving the system. Then apply elimination, and interpret the resulting equation. could you please explain this to me?

67. ## history

What is the significance of Alexander Hamilton's financial program? How did Hamilton's financial program play a role in the creation of a two-party political system? My response to the first was that he wanted to increase the nations finances and to make

68. ## Physics

Can anyone explain this to me, it was on my exam and i don't get it ; A 14.0 kg crate is pulled up a rough incline with an initial speed of 1.6 m/s. The pulling force is 131.0 N parallel to the incline, which makes an angle of 12.3 ◦ with the horizontal.

69. ## trig

covert polar equation r = 6/(2-3sinè) to rectangular equation

70. ## English

Posted by English on Sunday, February 27, 2011 at 7:26pm. 1. You can read whatever magazine you like. 2. You can read which magazine you like. 3. You can read that magazine you like. (Which one is right? Are they all grammatical? What is the difference in

71. ## Physics

If you do work on an object in 1/3 the usual time, your power output is ____ times the usual power output

72. ## math

Hitomi has a total of 30 red and blue bowling balls ate her bowling alley. Each red ball weighs 8 lb. Each blue ball weighs 9 lb. If the total mass of the blue balls is 49 lb. heavier than the total mass of the red balls, how many red balls does she have?

73. ## Physics

A 255 kg piano slides 4.3 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-35). The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b)

Each person has taken four tests and has one more test to take.Find the score that each person must make to change the mean or median as shown Barry has scores of 93,84,86,and75.He wants to raise the mean to 86

75. ## biology - glycolysis +atp (help)

9. The total amount of energy released from the chemical bonds of glucose is 2870 kJ/mol, after the initial investment of 2 ATP. The total energy that can be harvested to form ATP molecules is about 1200 kJ/mol. a. After the initial investment of 2 ATP, 38

76. ## Physics

A curve of radius 40 m is banked so that a 1070 kg car traveling at 60 km/h can round it even if the road is so icy that the coeﬃcient of static friction is approximately zero. The acceleration of gravity is 9.81 m/s a)Find the minimum speed at which a

77. ## English

1. Call 911. 2. Call at 911. 3. Dial 911. 4. Dial at 911. 5. Call me at 123-4567. 6. Dial me at 123-4567. (Which expressions are right?)

78. ## physics

WHAT CONDITIONS ARE NECESSARY FOR A HEAT ENGINE TO HAVE AN EFFICIENCY OF 1.0? AND HOW DO THE TEMP OF COMBUSTION AND THE TEMP. OF COOLANT AND EXHAUST AFFECT THE EFFICIENCY OF AUTOMOBILE ENGIES?

79. ## Algebra 1

The perimeter of a triangle is 20 inches. The longest side is 4 inches longer than the shortest side, and the shortest side is three -fourths the length of the middle side. Find the length of each side of the triangle

80. ## Algebra I

Write a system of equations to solve- Kay sells athletic shoes aat a store. She can either earn \$500 per month plus 4% commission on her tial sales, or \$400 per month plus a 5% commission on total sales. then B. What is the total price of the athletic

81. ## Chemistry

Calculate the mass of sodium bicarbonate needed to neutralize 3.0 mL of 3.0 M HCl. Show your work.

82. ## History

Aaron Burr hated Alexander Hamilton because Hamilton a. doubted Burr's character, and sabotaged his political aspirations. b. did not serve in the military during the American Revolution. c. was his biological father. d. never supported the policies of

83. ## Physics

A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 2.60 104 s. What is the speed at which the satellite travels?

84. ## Chemistry

The normal freeing point of cyclohexane if 6.6 degrees Celsius. A 0.2g sample of an unknown solute is dissolved in 50 ml of cyclohexane (d-0.8g/ml, Kf=20 degreesCelsius/m. If the freezing point of the solution is 3.6 degrees Celsius, what is the molar mass

85. ## Finance

XYZ bonds have a 7.60 percent coupon and pay interest annually. The face value is \$1,000 and the current market price is \$1,062.50 per bond. The bond matures in 16 years. What is the yield to maturity?

86. ## spanush

what is the verb poner in the preterite "yo" form?

87. ## German

PREPOSITIONS 1)Er setzt sich _______den Tisch 2)paul steht _________der Wohnungstür 3) schickn Sie die Briefe _____Leiter 4)Kann ich____dem Essen spazieren gehen

88. ## high school chem 1 (stoichemestry)

using equation: 2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2O question: How many Molecules of H2O can be made from 9.21 x 10^22 molecules of H2SO4?

89. ## accounting

Brevard County needs a new county government building that would cost \$24 million dollars. The politicians feel that voters will not approve a municipal bond issue to fund the building since it would increase taxes. They opt to have a state bank issue \$24

90. ## english

First you get to read something on the Internet or in your favorite magazine, and then write a summary of it. Choose any subject of interest to you personally (stamps, bees, security alarms, global warming, sports, etc.) and read about it (or listen to a

91. ## math

Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents. (-33xy^-1/66x^0y^-3)2

92. ## math

Simplify the following quotient of complex numbers into the form a + bi. -8-8i/1+2i

93. ## geometry

a block prism has a volume of 36 cubic units, what is the least and greatest surface area it could have

94. ## chemistry

which of the following is not Acidic? Milk Saliva soft drinks blood

95. ## math

!_,_,_,9,730,_,... terms in the sequence above are created such that each term after the first term is 1 more than the cube of the perceding term. what is the value of the first term in the sequence??

96. ## chemestry

an aqueous solution was prepared by dissolving 1438.0g of a nonelectrolyte in 469.0g of water at 25*c. the Vapor pressure of the resulting solution was found to be 20.5 torr. what is the molar mass of the unknown compound? the vapor pressure of the water

97. ## geometry

a line segment is divided into two segments that are in a ratio 4 to 7. the measure of one segment is 15 inches longer than the measure of the other. Find the measure of each segment.

98. ## Biology

As scientists tried to discover the nature of genes, what three critical gene functions had they identified?

99. ## Math

Identify the group that does Not contain equivalent fractions, decimal and percent. a.1/20, 0.05,5% b.7/20,0.7,70% c.1/8, 0.125, 12.5%

100. ## math

Use integration by parts to verify |(from -pi to +pi)cosmxcosnxdx = pi when m=n and |(from -pi to +pi)cosmxcosnxdx = 0 when m and n are not equal.

¿Qué quieres comer hoy? Would I answer this-Quiero comer en el restaurante hoy. Thank you

102. ## chemistry

what is the mechanism of urea based precipitation of copper nitrate?

103. ## Algebra sequences

Year 2003 2004 2005 2006 Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the preceeding year. Round to the two decimal places and show the Texas population increase that is approximately geometric. 1.01 B.

104. ## physics

If the rotational speed of each wheel is 9 revolution per second, what are the tangential speeds of a point on the rim of each wheel? Note: Wheels spin independently with equal rotation speeds -Diameter of Wheel A: 24 -Diameter of Wheel B: 12

How many molecules of water can be made from 9.21 x 10^22 molecules of hydrogen sulfate? The equation is 2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2O

106. ## Physics 2

The wire in the figure below carries a current of 13 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 26 A. Use Ampère's law to find the magnitude of the magnetic field at a distance of r =

107. ## Physics

A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 20°. For a speed of 29 m/s, at what value of the distance d should a driver

108. ## chemistry

what is the effect of concentration of urea on urea based precipitation of copper nitrate?

109. ## Chem

CH3-COOH-CH-COO- 3-hydroxybutyrate or β-hydroxybutyrate I have no idea why this is named what it is named. I know that the COO on the end is the most oxidized. I don't understand why a 3 is being used. Would it not be 4 b/c there are 4 carbons. I'm just

110. ## geometry

a line segment is divided into two segments that are in a ratio 4 to 7. the measure of one segment is 15 inches longer than the measure of the other. Find the measure of each segment.

111. ## English

I need help with homophone for a couple sentences I am stuck on. Sentence 1: The _____ in that phone booth has a shirt with a turtle-necked______. Sentence 2: The campers in their _____ are _______ about the reports of bears. Don't show your ____ while on

112. ## chemistry

what is the number of calories of heat energy released when 25 grams of water is cooled from 20 C to 10 C?

113. ## Physics

The kinetic energy of a 4 kg object moving at 3 m/s is _______ J.

114. ## ENGLISH

Please check for any errors. If there are some errors please correct them for me. When you were in my office last Tuesday, you stated that you wanted to alter your will to include two additional heirs. I have now prepared a will in compliance with your

115. ## Physics

A 255 kg piano slides 4.3 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-35). The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b)

116. ## Physical Education

Length: about 1 A4 page. Someone please proofread and tell me how I can re-structure certain sentences. Like some of them are lengthy because I want to make a point or arguement. Part a) Outline the purpose of the campaign you are assessing. b) Assess two

117. ## English

1. However brilliant she is, she won't be able to solve this math problem. 2. However brilliant she may be, she won't be able to solve this math problem. 3. No mater how brilliant she is, she won't be able to solve this math problem. 4. No matter how

118. ## physics

A door starts from rest and swings with an angular acceleration, alpha, α = 6 rad/s2, where t is in seconds. Determine the angle in radians through which the door turns in the first 3 s. Hint: kinematics equation for angular position (i.e., angle) is

119. ## Algebra 2 word problem

Just wanted to check to see if these are correct. Thank you, Please check if a greyhound bus travels 7mph slower than the express bus. the express bus travels 45 miles in the time it takes the greyhound bus to travel 38 miles. find the speed of each bus

120. ## Physics

Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees

121. ## physics

A rectangular piece of gold is 2.6 cm long and 3.9 cm wide.The piece displays a resistance of 1.47 ìÙ when a current flows along the depth-direction. In cm, how deep is the piece?

122. ## Physics

Hi I really need help with this question... please provide a step by step explanation with the answer because I need to understand it. Thanks! A 406-kg pile driver (the figure below) is raised 12 m above ground. (a) How much work must be done to raise the

123. ## Geometry

a line segment is divided into two segments that are in a ratio 4 to 7. the measure of one segment is 15 inches longer than the measure of the other. Find the measure of each segment.

124. ## Physics

Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees

125. ## math

in the triangle ABC , AD ray bisects the exterior angle of the triangle at A and intersects CB ray at D . if AB = 6 cm , AC = 8 cm , and BC = 5 cm , find the length of BD line segment

126. ## PHYSICS

A while crossing a bridge that is 3.6 km long, a truck weighing 9000 N is stalls 0.6 km from the left side of the bridge Calculate the torque about the left support due to the truck

127. ## Statistics

In a single toss of a fair die, what is the probability of obtaining an even number divisible by three?

128. ## math

Simplify the following product of complex numbers. (8 + i) • (-4 – 3i)

129. ## ALGEBRA

Translate to an algebraic expression. The product of 35% and some number. The translation is _______ (type the percentage as a decimal. Use y to represent some number )

130. ## Physics

A piston, A, has a diameter of .87 cm. A second piston, B, has a diameter of 5.6 cm. Determine the Force "F" necessary to support the 850 N weight in the absence of friction.

131. ## Science

Why is it so important to know your students even before planning your first science lesson.

132. ## English

1. He has great taste in fashon. (Would you like to paraphrase the sentence? What other words can we use instead of 'taste'? What is the meaning of 'taste' in the sentence?)

133. ## math

how wuld I write 2/5 as a decimal

134. ## microeconomics

What condition must be met in order to conclude that an economy is maximizing social well-being? Do the equilibriums given by individual markets necessarily lead to the maximization of social well-being (that is, if demand is equal to supply, can you

135. ## Algebra

Factor the following trinomial: w^18 – 9w^9y^5 + 14y^10

136. ## Biology - gylcolysis history (help+check)

The process of glycolysis is thought to have emerged very early in the origins of life. What evidence to support this theory can you find in the material presented in this section? Be prepared to defend your ideas. Ans: is this question indirectly related

137. ## Algebra I

Write a system of equations to solve- Kay sells athletic shoes aat a store. She can either earn \$500 per month plus 4% commission on her tial sales, or \$400 per month plus a 5% commission on total sales. then B. What is the total price of the athletic

138. ## math

While investigating the properties of parallelograms using a dynamic geometry software program, a student notices that the diagonals of a parallelogram seem to bisect each other. The student conjectures that this statement is true for all parallelograms.

139. ## math

Express the answer using scientific notation; retain all nonzero decimal places. (1.9 • 104) • (8.4 • 105)

140. ## ALGEBRA

At a local community college, it cost \$ 450 to enroll in a morning section of an algebra course. Suppose that the variable n stands for the number of students who enroll. Then 450n stands for the total amount of money collected for this course. How much is

141. ## Geometry

pa and pb are tangents to circle from point p. chord ab is drawn. find the number of degrees contained in angle pab if angle apb contains a)80 degees b 40 degrees c) 60 degrees d) 90 degrees e) 120 degrees can some1 pllllz explain this 2 me!

142. ## math

Apply the rule (3x,3y) to the vertices of rectangle ABCD to get rectangle WXYZ.

143. ## Physics 2

The wire in the figure below carries a current of 13 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 26 A. Use Ampère's law to find the magnitude of the magnetic field at a distance of r =

144. ## geometry

correct me if I'm wrong please. 7. what is the equation of the line which passes through c(2,3) and has a slope m =1/2? a.)x-2y=-4

145. ## college

When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution for handling a crisis of epic proportion?

146. ## Geometry

a line segment is divided into two segments that are in a ratio 4 to 7. the measure of one segment is 15 inches longer than the measure of the other. Find the measure of each segment.

147. ## Chemistry

What is the molar mass of 4.56grams of Benzoic Acid?

148. ## geometry

round 4.3215 to the nearest thousands

149. ## Chemistry

I don't know how to get the mole ratios of the following: Copper to Chloride Zinc to Chloride Zinc to Copper There are the moles I have of each; Copper 4.25*10^-3 mol Zinc 3.67*10^-3 mol Chloride 2.27*10^-2 mol

150. ## eth125

: Familism in Hispanic & Latino Culture - Based on the evidence provided, how is familism a positive attribute? What might make familism a negative attribute, as well?

9 + 5k = 45 + 2K the sample shows operation S9 to come up with 5K=36+2k assuming subtract 9 from the 45 sample shows K=12 how did they come up with that?

152. ## english

In the message portion of your Discussion post, start by writing one general sentence about a topic After your one general sentence, write three or four sentences that add specifics to your description

153. ## calculus

find equation of the tangent line to the graph of f(x) at the given point f(x)=(x-1)(2x+3)/(x-5) at 9, 42

154. ## Chemistry

Calculate the mass of sodium bicarbonate needed to neutralize 3.0 mL of 3.0 M HCl. Show your work.

155. ## Bio

what is another method for classifying bacteria? (other than shape or cell wall structure). thanks! :)

156. ## Chemistry

(A) is a solution of hcl (b)is a solution of koh titrate against b8 record your titre values as follows burretreading|rough|1stread|2ndread|3rdread/finalrding under rough|33.50|un der 1s rd |33.50|under 2nd rd |33.60| under3rd rd|33.70 intial rding under

157. ## HTT/210

HOW DID YOUR SECTOR BECOME MORE POPULAR OR IMPORTANT TO THE TRAVEL AND TOURISM INDUSTRY? PROVIDE A SIGNIFICANT HISTORICAL OR RECENT DEVELOPMENT. WHAT IS THE COMMON DEMOGRAPHIC OR TARGET GROUP THAT UTILIZES YOUR TRANSPORTATION SECTOR WHEN TRAVELING OR

158. ## Statistics

For a population with a standard deviation of 10, how mlarge a sample is necessary to have a standard error that is less than or equal to 5 points?

159. ## chemistry

If a 190 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3 x 1.0 ft, what is the average thickness of the sheet in meters?

160. ## Biology

What lines of support are there for evolution and what examples can be seen for each of these?

161. ## English

1. She studied hard, only to fail. 2. She studied hard, but failed. 3. She studied hard, but she failed. (Does #1 mean #2 and #3? Are they all grammatical? Do we have to put a comma before only?)

162. ## Accounting

What is the journal entry for the following? Stan opened a bank account in the name of SSRC and deposited \$10,000 of his savings into the account.

163. ## English

Can you please check these sentences for me? Thank you. 1) Henry believes beauty to be not as superficial as thought. 2) He urges Dorian to enjoy his youth now that he can, while it won't last for ever. 3) He also urges him to give in to any kind of

164. ## physics

If the original electric field is 1.5x10^-4 N/C and the distance is reduced to one-half the original distance, what is the magnitude of the new electric field?

165. ## Spanish

16. Yo _____ está mejor o peor. a. no sé b. no sé si c. sé d. no lo sabía A or B? 17. "¿Cuánto cuesta esa videocasetera nueva?" "_________" a. Cinco dólares b. Cincuenta dólares c. Quince dólares d. Quinientos dólares B? 19. "¿Qué hiciste en

166. ## Chemistry

Determine the molarity (in mol/L) of NO2− ions in solution when 9.77×101 g of sodium nitrite is added to enough water to prepare 3.94×102 mL of the solution.

167. ## Psychology

"It all happened for the best," "I would never have left that dreadful job if they had not laid me off," and "Yes, I miss mom's home cooking, but I am going to school and building my future." These are examples of: (Points: 5) avoidant coping.

168. ## geometry

a pool is 50 meter long, 25m wide and 4m deep.what will be the cost of cementing its walls and the floor at at a rate of 25 per meter?

169. ## Physics

The work done on an object with a mass of 50 kg raised 3 meters is ________ Nm.

170. ## Phys

i cant get this no matter what i try; A curve of radius 40 m is banked so that a 1070 kg car traveling at 60 km/h can round it even if the road is so icy that the coeﬃcient of static friction is approximately zero. The acceleration of gravity is 9.81 m/s

171. ## algebra

I have to find the square footage of my kitchen floor with the length of one side being 8 inches. So, now I know I can make X=8. f(x)=x^2 is the template needed for this solution. If f(8)= the square footage of my kitchen floor, what will my answer be?

172. ## A level law

discribe the custodial, community and other sentences available for adult offenders convicted in the crown court. 2. which types of sentences would be more appropriate where the main aims of sentencing are rehabilitation and reform thank you

173. ## hcs/335 plz help

What issues involve problems with consent in stem cell research? can anyone help me? i just need a quick explanation andi can go on from there i don't want the answer i just need help thanks

174. ## History

During the end of James Madison's presidency, the Republican Party a. began to embrace economic nationalism. b. opposed tariffs as destructive to agrarian interests. c. led the fight to stop the Second Bank of the United States. d. was dismantled.

175. ## history

what attracted readers by presenting "sensational" news stories?

176. ## overland high school

the gravitional force exerted on objects on the moon is about 1/6 that of earth. if an object weighs 240 newtons on the moon, on earth it would weigh _________.show work

177. ## math

A right triangle has a hypotenuse equal to 25 m and one leg equal to 17 m. What is the approximate value of the second leg of the triangle?

178. ## Physics

A satellite has a mass of 6000 kg and is in a circular orbit 4.20 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.20 106 m. What is the true weight of the satellite when it is at rest on the planet's

179. ## Physics

Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees

use inverse operations and a property of equaility to solve the equations. x+13=42 x-12=37

181. ## calculus

For each function, find a. f''(x), and b. f''(3). f(x)= 1 --- 6x^2

182. ## English

My father lived to be ninety. My father lived to be ninety years old. My father lived until/till ninety. My father lived until/till ninety years old. My father lived until/till he was ninety (years old). (Are all the expressions grammatical and the same?

183. ## Another Commerical

Ive done one on one of the prescription drugs, and I also want to do a complaint against the 5 hour Energy drinks because it isnt really healthy. The healthy choice is to get enough sleep, eat well, and do some exercise such as aerobics. I need to know who

184. ## Statistics

A random variable X is normally distributed with ì = 60. Convert the value of X to a z-score, if the standard deviation is as given. X = 60; ó = 7 A) 7 B) 1 C) 60/70 D) 0

185. ## Math

Jim bought a pair of shoes for \$50 and laces for \$1. If the sales tax is 7%, how much tax must he pay?

186. ## Saint Louis University

Let f(x,y)=sqrt((x-a)^2+(y-b)^2+(z-c)^2). Minimize f subject to Ax+By+Cz+D=0. what is the geometric meaning of your solution?

187. ## Math Man I am lost

Find the derivative of the function f(x)= 1/(sqrt (2x^3)-9)

188. ## chemistry

If you mix 150.0 of sodium with the necessary amount of chlorine, how much salt should you produce(measured in grams)?

189. ## Accounting

In 2014 ABC Company reported net income of \$100,000. What would be the effect on retained earnings on ABC Company's balance sheet and on its 2015 income statement if it didn't record a closing entry?

190. ## algebra

9x -12 = 78. I need the steps to solve.

191. ## math (algebra 1)

Determine the probability of rolling a sum of 9 or an odd number with two number cubes.

192. ## Physics

I was walking through my local home supply store the other day carrying a 10 ft length of plastic pipe. The pipe was horizontal and my hand was supporting the middle of the pipe. I noticed that when I took two steps each second the ends of the pipe would

I'm not sure what this is asking or how to answer it- ¿Qué prefiere llevar tu mamá? Is it asking what I prefer to take my mom? And how do I answer it? I'm really confused on the transalation Please give advice

194. ## Bio

Why do scientists think that colonial organisms were important in the evolution of multicelluar organisms? thanks!

195. ## PHI 103

what fallacy is used in,"After a taste of the morning coffee that his wife had made, Paul asks, "Did you do something different with the coffee this morning? It tastes a little bit different." "Look," snaps his wife, "if you don't like the taste of my

196. ## Algebra 2

Find all number for which the rational expression is undefined. q^3-59/9^2-64. Thank you

197. ## Chemistry HELP!!

A 100.0mL sample of the lake water was treated with 1.0mL of 1M AgNO3. 71.7mg of silver (I) chloride was isolated.What is the concentration of chloride ions in the water sample?

198. ## math

The following pattern continues indefinitely. REPEATREPEATREPEAT… 1) What is the 38th letter in the pattern? Explain your answer. 2) What is the 40th letter in the pattern? Explain your answer. 3) What is the 604th letter in the pattern? Explain your

199. ## geometry

Segments with the lengths of 6, 8, and 10 units will form what type of triangle?

200. ## chemistry

A high-altitude balloon contains 97.5 L of helium gas at 95.8 kPa. What is the volume when the balloon rises to an altitude where the pressure is only 21.5 kPa? (Assume that the temperature remains constant.)

201. ## math

How do you change 12d=60 into an linear enquality using either < or >?

202. ## English

Please check for spelling and commas errors. If commas need to be placed somewhere please let me know where. Please let me know whether you want photographs taking of the altar during the ceremony or after the services. If you would prefer not to have

203. ## Biology

As scientists tried to discover the nature of genes, what three critical gene functions had they identified?

204. ## math

let f be a function such that y'[x^2+1*f(x)]=2xf(x) +3x^4 +3x^2. What's f(x)?

205. ## liberal arts

3(x – 2) + 4x = -27

206. ## Business Law - Partnership

Question: Bright is a partner in a firm of accountants. Without consulting the others, he orders a word processor, though the price exceeds the figure for which agreement of all partners is required by the partnership agreement. He appoints a new clerk

207. ## Math

Here is the question: Patty has a bag of 72 marbles. The ratio of green marbles to yellow marbles is 2 to 7. How many green marbles does patty have? I don't know how to answer it. Please help!

208. ## Accounting

Cadzow Inc purchases all of its inventory on credit. On January 1, 2008 Cadzow had \$1,750,000 of Inventory. Cost of goods Sold during 2008 was \$5,650,000. The beginning and ending balances in Cadzow’s Accounts Payable account on January 1, 2008 and

209. ## english

After reviewing the lecture and suggested readings for this week, you have probably picked up several useful tools for stress management. Not only can you use these tools to help you choose better ways to react to situations, but you can also help others

210. ## Algebra 2

Find all numbers for which the rational expression is undefined. p^3-3p/p2-49. Thank you.

211. ## physics/physical science

I have multiple questions like the following and need help on how to work out the answer of one because our book does not cover impulse. a car is at rest when it experiences a fwd propulsion force to set it in motion. it then experiences a second fwd

212. ## Statistics

A random variable X is normally distributed with ì = 60. Convert the value of X to a z-score, if the standard deviation is as given. X = 60; ó = 7 A) 7 B) 1 C) 60/70 D) 0

213. ## ENGLISH

Please check and make sure my words are spelled correct and I have commas where they need to be.If not please correct it for me.Also do I suppose to capitalize smothers canning fortune. Please let me know whether you want to go by air or drive to the

214. ## Calculus Please someone help

1. Find the slope m and an equation of the tangent line to the graph of the function f a the point (2, 38) 2. Find an equation of the line that passes through the point (9,7) and is perpendicular to the line 5x+3y-4=0

215. ## Math

Don't understand what they want for a answer. Given the equation of a nonvertical line, explain how to find the slope without finding two points on the line.

216. ## math

how do i write a decimal and a fraction to show what part of a dollar one penny represents

217. ## College astronomy

What would be the parallax of Alpha Centauri if measurements were made from Mars?

218. ## eth 125

: Familism in Hispanic & Latino Culture

219. ## math

Use four 4s to make all the numbers from 0 to 50 example 4+4 6=4+---- 4 use any mathematical signs but four 4s may be used for each number

220. ## history

Discuss one example of cultural, economic, or environmental diffusion between the yellow river valley and Mesopotamia

221. ## math

Alexandra needs to cut the square pyramid out of cardboard. How much cubic space does she have?

222. ## Physics

Please Help! An object at 20 degrees Celsius with heat capacity 100 calories/Celsius is placed in 40 grams of water at 100 degrees Celsius. After equilibrium is reached, the object is removed from the hot water and placed in 200 grams of water at 0 degrees

223. ## Chemistry

How much heat is needed to raise the temperature of 155 g of water from 25.5 Celsius to 95.0 Celsius?

224. ## English

Please check for any errors. If there are some errors please correct them for me. When you were in my office last Tuesday, you stated that you wanted to alter your will to include two additional heirs. I have now prepared a will in compliance with your

225. ## Math

Suppose that y≤3⁢x, 2⁢x≤y and 13⁢x+13⁢y≤1 together with 0≤x, 0≤y. Determine a value of k so that the function f(x,y)=kx=y has a positive maximum value on the region at two corners. ANS: k= ?

226. ## ENGLISH

Please check for any errors. If there are some errors please correct them for me. When you were in my office last Tuesday, you stated that you wanted to alter your will to include two additional heirs. I have now prepared a will in compliance with your

227. ## chemistry

HOOC CH(CH2CH2SCH3)NH3+ , the amino acid methionine, has pKa1 = 2.2 and pKa2 = 9.1. If this amino acid is represented by H2L+, what is the major species at pH 6?

228. ## 5th math

Answer to this question: Lucienne and her class made 684 note cards for a school benefit. how many boxes of eight can thry fill? And tell what you did with the reminder?

229. ## math

whats the percent of 65/70

230. ## physics

If the original electric field is 1.5 10-4 N/C and the distance is reduced to one-half the original distance, what is the magnitude of the new electric field?

231. ## chemistry

Cu(H2O)4 + 2OH -->

232. ## algebra

For the class your car gets 32 miles per gallon of gas you need to travel 278 miles on day 1, 649 miles on day 2, and 482 miles on day 3. What is the function? What are the domain and the range?

233. ## geometry

what are the polar coordinates of the point k(-1,-sqrt3)? a.(2,60deg) b.(2,240deg)

234. ## algebra 1

four less than half a number is 17.find the number

235. ## English

What has a lot of power and start with with a "s" and ends with a "l".

236. ## chemistry

how many molecules are in 35 grams of C2H60 (ethyl alcohol(?

237. ## Statistics

If there are 1000 people in a group, how many would you expect to score above 90? Mean: 85 SD: 10

238. ## microeconomics

Consider the markets for pizza and fried chicken. Show graphically and explain the impact(s) you would expect if technological change leads to the development of a pizza oven that is both much cheaper and uses less energy than current ovens.

239. ## science

plant like which are called_______

240. ## art

how is the best way to create a celtic artefact from an everyday object

y=x2+6

242. ## Colleen

Is there a trick to learning how many days are in a each month for one year

243. ## math

Find 28% of 71

244. ## social studies

what does a peninsula look like

Im doing this budget project thing, and Im pretending to buy a TV, I want to buy one at the cheapest price, so I went to h t t p : // w w w . shaw . c a / Television/ And the data plan is \$29.95. But how much would the TV cost to buy? And I need a source

246. ## math

what is the range,median and mode?how do you identify them?

247. ## algebra

5x+5=2/10x+29

248. ## physics

why is distance usually on the bertical axis even if the distance is the independent variable?

249. ## algerbra

what is the degree of the polynomial 8x^5y^4-2x^8

250. ## geometry

write the equation of the line that contains the points (4,3) and (5,6)

251. ## Math

??Jack has two spheres one has radius of 12 and the other has a diameter of 12. What is the difference between two spheres?

252. ## math

area of a triangle is equal of the area of a square of side 60 m. Find the side of the triangle whose corresponding altitude is 90 m.

253. ## Algebra 2 word problem

just checking to see if i have this problem correct Sammy can cut wood twice as fast as Joe. When they both work together, it takes them 4 hrs. how long would it take them to do the job alone? 4/x +4/x+2 = x^2+2 4x+4x+8= x^2+2 8x+8= x^2+2 x^2-6x-8=0

254. ## psychology

I need an example of how one domain of development affects the other two

255. ## physics

In the figure , the total resistance is 10.0 kOmega, and the battery's emf is 28.0 V. If the time constant is measured to be 40.0 mu s. Calculate the total capacitance of the circuit.Calculate the time it takes for the voltage across the resistor to reach

256. ## Physics

____ N of work are done on your physics text when you carry it horizontally across a 15 meter wide room.

257. ## Physics

A 18 N object moves 1 m/s. Its KE is ______ J.

258. ## Physics

The momentum of a 5 kg thrown 3 m/s is _________ kg m/s.

259. ## science

Please help? What is the cars motion Relative to the starting point at time = 8 minutes?

As regards to federal reserve what is the success in the cost and availability of credit today? and what could be handled differently?

261. ## Chem

HCl -> H+ + Cl- In this scenario would the HCl be a strong acid and the Cl- the base? And do you only use the word conjugate bases when dealing with weak acids? Thanks.

262. ## algebra

solve for x: X+4 = ∜(x+1)

263. ## Spelling

Witch has the short e bread or cooked how can i tell

264. ## Math

How many inches are in one feet

265. ## us history

what were the challenges farmers on the plains and what inventions and government aid helped them during the 1800's

266. ## Math

If I walked 55feet per day. How many miles will I walk per day. Thanks

267. ## pe

missed school cause I had flu. now haf to write 5 papers for pe.

268. ## physics

WHAT FORMULA DO YOU USE TO WHEN YOU NEED TO GET THE TEMP. OF Al TO 100C. IF THE Al IS 2.5KG AND ITS STARING TEMP. IS 70C.

269. ## Math

What is the root of 22 over the root of 32?

270. ## checking to see if this is right

just checking to see if i have this problem correct Sammy can cut wood twice as fast as Joe. When they both work together, it takes them 4 hrs. how long would it take them to do the job alone? 4/x +4/x+2 = x^2+2 4x+4x+8= x^2+2 8x+8= x^2+2 x^2-6x-8=0

271. ## German

1)Er setzt sich _______den Tisch 2)paul steht _________der Wohnungstu 3) schickn Sie die Briefe _____Leiter 4)Kann ich____dem Essen spazieren gehen

272. ## German

PREPOSITIONS 1)Er setzt sich _______den Tisch 2)paul steht _________der Wohnungstu 3) schickn Sie die Briefe _____Leiter 4)Kann ich____dem Essen spazieren gehen

273. ## World History

How did a newfound sense of commercialism aid in the development of Europe as global power culturally and economically during the modern period?

274. ## earth science

why do cloulds and precipitation usually occur along frontal surface

275. ## main ideas

In comparing an oak tree with a maple tree, you can correctly say that

276. ## History

What is the role of the United States in the emerging global community?

277. ## History

Black southerners sought respect, land, and the rights of citizenship. What did freedom mean?

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279. ## Math

7 (x-2y) minus cubed

280. ## Math

how many days are in october,november,and december in total

281. ## english

How long did the journey to Virginia actually take Smith and the colonists?

282. ## Science

Iron Particles are electroplated by chromium why?

283. ## Math

(5x ^3)^2(2x^7)

150 = 25p

285. ## science

the phenomena of parallelism of axis? a- results in the production of day and night b- causes different hemispheres of the earth to tilt toward the sun c- determines the angle at which the sun's rays will strike the earth d- all of the above

286. ## algebra

simplify: ã(x^2+2x+1)

287. ## English

What does ei means when a teacher writes this on your research paper? Thanks a lot

288. ## history

why is betsy ross an important person??

289. ## math

Explain vertices and edges

290. ## mathmetics math/intervals

i am doin homework and i do not know what an interval is

Does Spain produce a lot of cork?????????

292. ## not really sure

What is the mass of a mole of Sodium Carbonate?

293. ## science

True or False...The CLOSER the origin of an earthquake to an inhabited area , the greater the destruction?

294. ## adult development psyc 307

identify and decribe the physical,conitive, and socioemotional changes that we experience during the early adult stage of development?

295. ## math

Explain vertices and edges

296. ## English

* Diego (How do you pronounce the name above? Is it a male given name?)

297. ## Simple Maths

Suppose student gets 30 marks out of 70 so how much will he get out of 100!!! And what will be the 50% of it tell me step wise step!!!

What is strengths and weaknesses regarding monetary polcies, and how is related to treasury bill and note rates?

299. ## language arts

what does fertilize mean?!

300. ## Pre-Algebra

how do you read this &radic and what is the value of it?

301. ## Math

3x^2 - x - 4

does the pentagon shape right angle

303. ## algebra

simplify: ã(x^2+2x+1)

304. ## math

how do u figure out what 18% of 34 is?

305. ## Math

If I walk 10,000 steps per day. I about 18inches. My step How can I determine how many inches will I walk per day.

306. ## math

14/25 please convert to a decimal and percent

307. ## critical thinking

Consider a situation or situations in your personal life where you feel you have used inductive or deductive reasoning to come to a conclusion.

308. ## facturing

x/x + 12 -1 = 1/2x

309. ## science

sulphuric acid + sliver = hydrochloric acid + calcium = not sure on how to do these

If ƒ: x→x+3 find the function g such that gf : x →x²+4x+5

311. ## math

1=11inches,w=5inches

312. ## math

0.06 please convert to a fraction and percent

313. ## equation

x/x + 12 -1 = 1/2x

get each variable by itself on one side of the equation. x-45=90 n+23.4=36.9

315. ## trig

y=sin pie divied by 2 theta