# Questions Asked onOctober 27, 2014

1. ## math

Jenna says that no row or column contains products with only odd numbers. Do you agree? explain.

2. ## physics

A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?

3. ## nutrition

the number of calories consumed must equal the number of calories a. needed** b. burned c. absorbed d. wanted

asked by Maryan Soto
4. ## math

4 PARTS TO THIS...SOUNDS CHINESE...HELP! Chef Alonso is creating a recipe called Spicy Italian Chicken with the following ingredients: 3/4 pound chicken, 2 1/2 cups tomato sauce, 1 teaspoon oregano, and 1/2 teaspoon of his special hot sauce. a) Chef Alonso

5. ## Calculus

A person whose height is 6 feet is walking away from the base of a streetlight along a straight path at 4 feet per second. If the height of the streetlight is 15 feet, what is the rate at which the person's shadow is lengthening?

6. ## Trig

A weight is oscillating on the end of a spring. The position of the weight relative to the point of equilibrium is given by y=1/12(cos8t-3sin8t), where y is the displacement (in meters) and t is the time (in seconds). Find the times when the weight is at

7. ## Physics

What is the minimum energy needed to change the speed of a 1600 kg sport utility vehicle from 15.0 m/s to 40.0 m/s?

8. ## math

Bianca has a total of 25 cent. She has some nickels and pennies. How many different combinations of nickels and pennies could Bianca have?

9. ## Calculus: need clarification to where the #'s go

Air is being pumped into a spherical balloon so that its volume increases at a rate of 80 \mbox{cm}^3\mbox{/s}. How fast is the surface area of the balloon increasing when its radius is 14 \mbox{cm}? Recall that a ball of radius r has volume \displaystyle

10. ## physics

A force of 1.35 newtons is required to accelerate a book by 1.5 meters/second2 along a frictionless surface. What is the mass of the book? 0.45 kilograms 0.90 kilograms 1.35 kilograms 1.5 kilograms 1.8 kilograms

asked by jerome rice
11. ## Physics

An ideal spring with a force constant (spring constant) of 15 N/m is initially compressed by 3.0 cm from its uncompressed position. How much work is required to compress the spring an additional 4.0 cm?

12. ## science

which of the following is true about the magnetic field diagram below

13. ## algebra. help!

1. 3x+10≥4 a. x≥-2 b. x≤ 2 c. x≤-2 d. x≥ 2 ** 2. The tennis team is selling key chains as a fundraiser. If its goal is to raise at least $180, how many key chains must it sell at$2.25 each to meet that goal? Write and solve an inequality. a.

14. ## Science 8A Electromagnetism

Hi, Umm, can someone give me an example because I'm kind of confused. I need help! Please help me! For this portfolio, you will design an experiment to investigate the relationship between the number of coil loops and a strength of a solenoid. Once you

15. ## algebra. help!

A cafeteria has two soda machines. Once machine has the following flavors: Cola, root beer, and lime. The second machine has lemon, orange, cola, and cherry. Which set represents all flavors in the two machines. a. {Cola, root beer, lime} b. {cola} c.

16. ## Math

Brand A: 20 for $2.50 Brand B: 35 for$3.25 Brand C: 50 for $5.25 Brand D: 100 for$10.00 The school nurse is low on band-aids. She heads to the store and finds 4 brands. Which one is the best buy? You must prove your answer.

17. ## ga history

1. which economic activities are most dependent on georgia's climate? a lumber and mining b imports and exports c agriculture and tourism d transportation and telecommunications 5. Metropolitan Atlanta's rapid growth has proven to be a major strain on the

18. ## ga history

1. which economic activities are most dependent on georgia's climate? a lumber and mining b imports and exports c agriculture and tourism d transportation and telecommunications 2. the boundary between the piedmont and the coastal plain is known as the a

asked by kathy need help asap
19. ## Math

A rectangular tabletop has a length of 4 3/4 feet and an area of 11 7/8 square feet. What is the width of the tabletop❓❔❓❔❓❔

20. ## Chemistry

How many atoms of nitrogen are in 3.00g of N2O5?

21. ## Stats

Suppose the scores of students on an exam are Normally distributed with a mean of 297 and a standard deviation of 66. Then approximately 99.7% of the exam scores lie between the numbers _____and _______such that the mean is halfway between these two

22. ## Math help

A cafeteria has two soda machines. Once machine has the following flavors: Cola, root beer, and lime. The second machine has lemon, orange, cola, and cherry. Which set represents all flavors in the two machines. a. {Cola, root beer, lime} b. {cola} c.

23. ## Chemistry lab

based on the qualitative organic analysis 1. Why is it important to have clean test tubes before running a test? Before which tests should acetone not be used to clean the test tubes? 2. Why run solubility tests before running the functional group

24. ## stats

AARP reported on a study conducted to learn howlong it takes individuals to prepare their federal income tax return (AARP Bulletin, April 2008). The data contained in the file named TaxReturn are consistent with the study results. These data provide the

25. ## algebra 2

A skydiver jumps from an airplane at an altitude of 2,500 ft. He falls under the force of gravity until he opens his parachute at an altitude of 1,000 ft. Approximately how long does the jumper fall before he opens his chute?

26. ## Math

Translate this phrase into an algebraic expression. 7 increased by twice Malik's savings. Use the variable m to represent Malik's savings.

27. ## algebra--1 question

Choose the compound inequality all real numbers that are less than -3 or greater than or equal to 5 this is the problem i wrote out: x < -3 or x 'greater than or equal to' 5 (i don't have the sign) i know that's the problem written as an inequality but i

28. ## Chemistry

A 10.0 gram sample of a mixture of CH4 and C2H4 reacts with oxygen at 25°C and 1 atm to product carbon dioxide gas and liquid water. If the reaction produces 520 kJ of heat, what is the mass percentage of CH4 in the mixture? I am all out of tries on the

29. ## physics

A 65kg astronaut (including spacesuit and equipment), is floating at rest a distance of 6m from the spaceship when she runs out of oxygen and fuel to power her back to the spaceship. She removes her oxygen tank (3.0 kg) and flings it away from the ship at

30. ## algebra. help!

Start from 110 feet away, a person on a bicycle rides towards a checkpoint and then passes it. The rider is travelling at a constant rate of 30 feet per second. The distance between the bicycle and the checkpoint is given by the equation d=|110-30t| at

31. ## math

3/5 + 3/4 round each fraction and estimate the sum. add the two fraction using a common denominator and then round the result. which estimate is closer to the actual answer.

32. ## Algebra

Translate this phrase into an algebraic expression. 7 increased by twice Malik's savings. Use the variable m to represent Malik's savings.

33. ## Chemistry

I have 3 Fe (s) + 4 (H2O) (g) reacts with FeO4 (s) + 4 H2 (g) How many g of steam and iron must react to produce 375 g of magnetic oxide Fe3O4 ? I need help trying to figure out how to write the equation please

34. ## Physical Science

A hockey puck moving at 28 m/s is caught by an 80.00 kg man who was at rest. The man and the puck move together after the collision. The pucks mass is 0.16 kg. What is the final velocity?

35. ## Math

The medical records of infants delivered at Kaiser Memorial Hospital show that the infants' lengths at birth (in inches) are normally distributed with a mean of 22 and a standard deviation of 2.1. Find the probability that an infant selected at random from

36. ## lan

Which best describes Maya Ying Lin's design in "Always to remember" A. Place of healing, vertical like other monuments, durably made of stone. B. Harmonious with surrondings, place of healing, quiet memorial. C. Place of healing, political statement, quiet

37. ## Science 10

Need examples of food for Chemistry Reactions 1. Synthesis 2. Decomposition 3.Single Replacement 3. Double Replacement So for synthesis ( A + B --> AB ) I did, Macaroni + Cheese --> Mac n Cheese For Decomposition ( AB --> A + B ) I did, Dough --> Wheat +

38. ## Chemistry

Ammonia, NH3, reacts with Phosphoric acid to produce Ammonium hydrogenphosphate, (NH4)2HPO4. What mass (in grams) of ammonia will react with 2.800E3 kg of Phosphoric acid?

39. ## math

Scale Drawings Marking City is 5 inches away from jamming city on the map. What is the actual distance between the two cities? Scale: 2inches:35Miles My answer 2in/35mi = 7ft/x mi 2x=7x35 2x/2=245/2 x=122.5 miles

asked by john Dosley
40. ## Physical Science

A 5.00 kg block of ice at –25 oC is converted to steam at 125 oC. How much energy (in kilojoules) is expended in this process? The following data are provided: a. Specific heat of ice = 2.092 J/g oC b. Latent heat of fusion = 334.72 J/g c. Specific heat

41. ## Pre-Algebra

The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.)A school band has a brass section of trumpet, trombone,

42. ## physics

A figure skater is spinning with an angular velocity of +10 rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is +5.8 rad. Determine (a) her average angular acceleration and (b) the time during which

43. ## science-gen chem

if 0.969 g of CaCl2 is mixed with 1.111 g of KlO3 how many grams of solid Ca(IO3)2 can theoretically be made? CaCl2(aq) + 2KlO3(aq) ===> 2Kcl(aq) + Ca(lO3)2 (s)

44. ## Math

A particle is moving along the curve y= 2 \sqrt{4 x + 4}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

45. ## math

A bottle of cordial contains 5litres ,10% is pure fruit juice.how many litres of water must be added to dilute it to 4% fruit juice

46. ## Math

The height h in metres above the ground of a projectile at any time t in seconds after the launch is defined by the function h(t)=-4t +48t +3 A.) Complete the square to write H in standard form b.) Find the height of the projectile three seconds after the

47. ## Physics need help

Carbon monoxide is a gas at 0 degree Celsius and a pressure of 1.51x10^5 Pa. It is a diatomic gas, each of its molecules consisting of one carbon atom (atomic mass = 12.o u) and one oxygen atom (atomic mass = 16.0 u). Assuming that carbon monoxide is an

48. ## science

'Imagine there is a tank of unknown gas that contains 53.31% carbon, 11.18% hydrogen, and 35.51% oxygen by mass. At 35.0 °C and 0.455 bar, 2.00 L of the gas has a mass of 3.20 g. Using this information, answer the following questions. a.) What is the

49. ## Calculus

If f(x)=sqrt (x^2-4) and g(x)=3x-2, then the derivative of f(g(x)) at x=3 is A. 7/sqrt 5 B. 14/sqrt 5 C. 18/sqrt 5 D. 15/sqrt 21 E. 30/sqrt 21

50. ## math

which number has the greatest value? a 3.5 b square root of 15** c square root of 1/16 d 26/100 which number is an irrational number? a 3.5 b square root of 36 c square root of 48 d 37/100*** If a is a rational number and b is an irrational number, then

51. ## Physical Science

Jill walks 1 mile everyday for exercise, leaving her front porch at 9:00 A.M. and returning to her front porch at 9:25 A.M. What is the total displacement of Jill's walk?

52. ## Physics

A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?

53. ## Calculus: need clarification to where the #'s go

When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^{1.4}=C where C is a constant. Suppose that at a certain instant the volume is 330 cubic centimeters and the pressure is 79 kPa and

54. ## Physics

A block of mass m1 = 41.3 kg on a horizontal surface is connected to a mass m2 = 13.2 kg that hangs vertically as shown in the figure below. The two blocks are connected by a string of negligible mass passing over a frictionless pulley. Assume that the

55. ## Physics

A cargo plane is flying horizontally at an altitude of 11.2 km with a constant speed of 1260 km/hr when a large crate slides out of the rear of the plane. How long does it take the crate to hit the ground? The acceleration of gravity is 9.81 m/s 2 . Answer

56. ## Physics

The wheels, axle, and handles of a wheelbarrow weigh W = 57 N. The load chamber and its contents weigh WL = 674 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a

57. ## math

A florist had an equal number of red and yellow tulips. She sold 624 red tulips. Then she had 4 times as many yellow tulips as red tulips. How many tulips did she have at first. 624 X 5 ----- 3120

58. ## science

1. Tommy performed an experiment to test the solubility of sodium chloride in water. After he completed his experiment, he discovered that he had a few unused grams of NaCl leftover in a beaker. What should he do with the excess NaCl? A. Pour the excess

59. ## math

Ms. Hernandez has 17 tomato plants that she wants to plant in rows. She will put 2 plants in some rows and 1 plant in the others. How many different ways can she plant the tomato plants?

60. ## Physics

Two thin slits with separation of .0250mm are placed over monochromatic orange laser light at 610.nm. What is the small angle measurement from the central maximum (zero degrees, inline with the source) to the first maximum?

61. ## world geography

Employment opportunities were limited in Tijuana. Manuel, who had been unemployed for several months, decided to join a group of people traveling north to find work. What concept is described by the paragraph above? a)population growth b)urbanization

asked by ty washington
62. ## Physics

The atomic mass of a nitrogen atom (N) is 14.0 u, while that of an oxygen atom (O) is 16.0 u. Three diatomic gases have the same temperature: nitrogen (N2), oxygen (O2), and nitric oxide (NO). Rank these gases in ascending order (smallest first), according

63. ## Calculus: need clarification to where the #'s go

A particle is moving along the curve y= 2 \sqrt{4 x + 4}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

64. ## physics

Let's say you measure an average acceleration to be 0.44 ms-2. What is the height (in centimeters) of the riser block? Assume the legs of the track span 1.0000 m and that there is neither friction nor drag. Also assume the block is under one of the legs.

65. ## math

Trevor invests $10000 for a year.he obtains 8% per year for a part of the money and 10%per an um for remainder.at end of the year he sill receive$950 in interest.how much does he invest at 10%

66. ## Calculus

If (x+2y)dy/dx=2x-y, what is the value of d^2y/dx^2 at the point (3,0)? A. -10/3 B. 0 C. 2 D. 10/3 E. Undefined

67. ## Physics

Two springs, each with spring constant 20 N/m, are connected in parallel, and the combination is hung vertically from one end. A 10-N weight is then suspended from the other end of the combined spring. How far does the combined spring stretch as it comes

68. ## algebra

Suppose a function f(x) has a domain of (-inf,inf) and range [-11,3]. If we define a new function g(x) by g(x)=f(6x) +1, then what is the range of g(x)? Express your answer in interval notation. Thank you!

asked by Trish Goal
69. ## Science Physics

A pile driver falls a distance of 1.75 m before hitting a pile. Find its velocity as it hits the pile. So its 1.75x9.80=17.15?

70. ## Theories and issues in working with school-age chi

Which of the following is the most accurate statement about separation anxiety?  A. Separation anxiety usually appears the age of two months. B. Separation anxiety is usually outgrown in infancy. C. Separation anxiety is an affliction that should be

71. ## Physics

A large pot is placed on a stove and 1.2 kg of water at 14°C is added to the pot. The temperature of the water is raised evenly to 100°C just before it starts to boil. (a) What amount of heat is absorbed by the water in reaching 100°C? (b) The water

72. ## Math Help..!

A stock's price dropped from $63.28 per share to$27.45. What was the loss on a single share of the stock?

73. ## Math

The slowest mammal on Earth is the sloth. A sloth might move along a tree at a maximum rate of just 3 ^-1m each minute. At this rate, how long will it take a sloth to climb a tree that is 33 m tall?

74. ## science

12. Convert 11.1 liters to centiliters. A. 1,110 centiliters B. 11,100 centiliters C. 111 centiliters D. 111,000 centiliters 13. Which of the following tasks should be performed before measuring the mass of any object on a triple-beam balance? A. Make sure

asked by rachel help asap ms.sue
75. ## English

1. The boy was hungry that he ate a lot. 2. The boy was hungry that he ate much. ------------ Are both the same? Which one is commonly used? ================== 3. I smelled the fish becoming bad. 4. I tasted the bread becoming bad. ------------- Are these

76. ## Algebra

A 30-pack of blank CDs costs $9.50. A 50-pack of blank CDs costs$13. How can you tell which is the better buy?

77. ## Algebra, help please!!!

Fill in the following blanks to find other expressions for 5%: A: ___ for every 100 B: ___ for every 50 C: 1 for every ___ D: 8 for every ___ E: 0.5 for every ___ Please help, very confused by this problem.

78. ## chemistry

The balanced equation is shown below. 2 HCl(aq) +CaCO3(s)=CaCl2(aq) +H2O(l) +CO2(g) 2.00 dm3 of a 3.00 M hydrochloric acid solution is added to the kettle (this is an excess). During the reaction 1.20 dm3 of CO2 is produced (assume 250C and 1 atmosphere)

79. ## Fluid Mechanics

(a) Find the total force on the bottom of a cylindrical gasoline storage tank 15.0 m high with radius 23.0 m. (b) Find the total force on the side of the tank.

80. ## math problem solving

leslie has 17 tomato plants that she wants to plant in rows. she will put 2 plants in some rows and 1 plant in others. how many different ways can she plant the tomato plants?

81. ## Math Physics

Water is pumped at 250m^3/min from a lake into a tank 65.0 m above the lake. (a) What power, in kW, must be delivered by the pump? (b) What horsepower rating does this pump motor have? (c) What is the increase in potential energy of the water each minute?

82. ## Calculus

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 24 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

83. ## S.S.

1. Which of the following is true of the Hay-Bunau-Varilla Treaty? A. It granted the United States a canal zone in the Isthmus of Panama. B. It laid out the terms for the purchase of Panama from Colombia. C. It was intended to restore friendly relations

84. ## math

A box of chalk and 2 staplers cost $10 Three boxes of chalk and 2 staplers cost$18. Find the total cost of 1 box of chalk and 1 stapler?

85. ## math

consider the sum 3/5+3/4. round each fraction and estimate the sum. add the two fraction using a common denominator and then round the result. which estimate is closer to the actual answer.

86. ## Physics-Light

light diffraction help? a single monochromatic indigo light source is shined through an etched, flat prism with a slit separation of .0250mm. the resulting interference pattern is viewed on a screen 1.25 m away. the third Maximum is found to be 6.6 cm from

87. ## Pre-Algebra

The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.) If there are two tubas in the band, what is the total

88. ## math

David has a hose that is 27 ft long. He wants to cut it into two pieces so that the longer piece is 3 ft more than 2 times the length of the shorter piece.

89. ## English

In the following sentence am I correct to say that "whom the newspaper endorsed" is the adjective clause. My company once employed the woman whom the newspaper endorsed for political office.

90. ## Physics Science

(a) Find the total force on the bottom of a cylindrical gasoline storage tank 15.0 m high with radius 23.0 m. (b) Find the total force on the side of the tank.

Custom Kitchens received an invoice dated November 17 from Idea Cabinets Ltd. for $7260 with terms 3/15, 15/30,n/60. If Custom Kitchens made a payment of$4000 on December 2, what further payment on December 16 will settle the account?

92. ## Physics

A person pushes a 10 kg crate 5 m up a 29 degree incline with an 80 N force parallel to the incline. The fricitonal force is 20 N. Find the work done: a) by the person b) by gravity c) by friction

93. ## Algebra, help please!!!

Find three decimals between each of the following pairs of decimals: A: 4.333333333(repeating 3) and 4.3 B: 203.76(repeating 7,6) and 203.7(repeating 7)

94. ## English

He is listening to music through headphones. --------------- Instead of 'through', what other prepositions can we use?

95. ## Limits

Prove using formal definition of limit: Lim 2^(1/n)=1 n->ininity

96. ## English

1. I have acne. 2. I have an acne. 3. I have acnes. 4. I have pimples. 5. I have pimple. 6. I have a pimple. -------------------- Is 'acne' the same as 'pimple'? Which ones are grammatical? Can we substitute 'pimple' for 'acne'?

97. ## physics intro

A 0.175-lb ball is thrown upward with an initial velocity of 75.0 ft/s. What is the maximum height reached by the ball? Would I need to set it up like √2*75.0*-32.2/0/175?

98. ## math 7

a model house is 12 cm wide if it was built with a scale of 3cm and 4m than how wide is the real house

99. ## Chemistry

Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)-2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)

100. ## math trade discount

In addition to the regular trade discount of 25% and a volume purchase discount of 8.33333333% from the manufacturer, Appliance Warehouse is offered a further 5% discount for orders places in January. a. What is the list price on an electric range whose

101. ## Calculus

A sphere is increasing in volume at the rate of 3(pi) cm^3/sec. At what rate is the radius changing when the radius is 1/2 cm? The volume of a sphere is given by V=4/3(pi)r^2 A. pi cm/sec B. 3 cm/sec C. 2 cm/sec D. 1 cm/sec E. .5 cm/sec

102. ## physics

A toy car in the figure below runs off the edge of a table that is h = 1.150 m high. The car lands d = 0.410 m from the base of the table.

103. ## math

if the school record for the softball throw is 78 ft about how much farther must Robert throw the ball to match the record. a 15ft b 16ft c 18 ft d 20ft

Find the a/b form, where a and b are integers and b isn't equal to 0, for each of the following: A. 0.29 (29 repeating) B. 0.00029 (29 repeating)

105. ## physics

A small block of mass m = 225 g is released from rest at point circled A along the horizontal diameter on the inside of a frictionless, hemispherical bowl of radius R = 27.5 cm as shown in the figure below. (a) Calculate the gravitational potential energy

106. ## Math

Sue bought an ice cream cone from Dairy Queen. The cone had a radius of 3cm and a height of 8cm. If I use the formula of (TT=3.14, r=radius, h=height) 2 V=1/3TTr h Is the answer 50.24 cm3? Any help is appreciated. If I'm not right could you tell/show me

107. ## Spelling

Finish each phrase with a spelling word that rhymes. tread- board-split-chief-season-brain-throw-goal-scrape-chice-allow-auction-flaw-daughter-destroy-renew-boyhood-returned-chopped-counting. 1- new knowledge a........gain Answer: brain 2-leader of

108. ## Physics

The cylinder in the drawing contains 3.81 mol of an ideal gas. By moving the piston, the volume of the gas is reduced to one-fourth its initial value, while the temperature is held constant. How many moles Δn of the gas must be allowed to escape through

109. ## S.S. To Ms.Sue

7. What new concept became popular with department stores? A. Electricity B. Advertisements C. Using Credit D. Browsing 15. In the first major pioneering movement, settlers made their way to Oregon and California by way of the _______ Trail. A. Kearny B.

110. ## ga history

Describe some positive and negative events of the trustee period, and provide your own evaluation of the rule of the trustees as either generally a success or a failure. social studies/Ga history -

111. ## Theories and issues in working with school-age chi

Children create _______ when they talk about certain kinds of information many times. A. motivations B. cultural schemas C. attitudes D. socialization strategies A.

112. ## science

on the moon where g=1.62m/s2 would the pendulum clock on the moon run faster or slower

113. ## Math

Name a number that is a factor of both 12 and 24

114. ## science

1. Tommy performed an experiment to test the solubility of sodium chloride in water. After he completed his experiment, he discovered that he had a few unused grams of NaCl leftover in a beaker. What should he do with the excess NaCl? A. Pour the excess

115. ## uga

Assume the z test statistic equals 0.99, find the the p-value if Ha:p> 0.50

116. ## Bio 11

what is the advantage of sexual reproduction over asexual reproduction

117. ## Organic Chemistry

In lab, we purified acetanilide through recrystallization. We did not have have time to test the melting point to check the purification, so we put the recovered crystals in a 50ml beaker, covered the top with parafilm with a few holes poked in the top,

Find al points where tangent lines to: (x^2+y^2)^(3/2) = sqrt(x^2+y^2) + x is either horizontal or vertical using implicit differentiation.

119. ## chemistry

1/0.000015 in scientific notation. Please explain how to do this.

120. ## Calculus

The top of a 13 foot ladder is sliding down a vertical wall at a constant rate of 4 feet per minute. When the top of the ladder is 5 feet from the ground, what is the rate of change of the distance between the bottom of the ladder and the wall

121. ## Physics

In the movie Superman, Lois Lane falls from a building and is caught by the diving superhero. Assuming that Lois, with a mass of 45 kg, is falling at a terminal velocity of 56 m/s, A)how much force does Superman exert on her if it takes 0.7 s to slow her

122. ## Fluid Mechanics

What must the water pressure be to supply the second floor (18.0 ft/up) with a pressure of 50.0 lb/in² at that level?

148. ## language / reading

I can't figure out what the climax of The Last Battle is? Is it this,the climax of The Last Battle is when Jill and Eustace go to the real Narnia.

149. ## math

what is the consecutive positive odd numbers of 34,459,425?

150. ## English

On following sentence the first clause is a dependent clause. The second clause is an independent clause which can stand by itself. Before President Roosevelt died, President Truman did not know that the United States was developing atomic weapons. I say

151. ## S.S.

12. The richest discovery in the history of mining occurred in 1873. This so-called "Big Bonanza" made _______ the richest man in the world. A. Henry Sutter B. John Mackay C. John Placer D. Henry Comstock B?

152. ## language / reading

I'm doing a précis and I want to get a good grade could someone check this. C.s. Lewis's The Last Battle takes place in a forest it is a children's fantasy novel. The conflict is that a false ask an roams Narnia. The main characters at e Jill and Eustace

153. ## Math

A kitchen floor measures 10ft by 12 ft. Calculate the minimum area and maximum area using the greatest possible error

154. ## Math

In three successive years the price of the common shares of Bedrock Resources Ltd. fell 40%, 60%, and 70% ending the third year at 50 cents. a. What was the share price at the beginning of the three-year skid? b. How much (in dollars and cents) did the

155. ## math

4/10 -1/5 9/15-1/3 4/12-1/6 find the difference

156. ## Math invoice

Custom Kitchens received an invoice dated November 17 from Idea Cabinets Ltd. for $7260 with terms 3/15, 15/30,n/60. If Custom Kitchens made a payment of$4000 on December 2, what further payment on December 16 will settle the account?

157. ## Chemistry

If 525J of energy are added to a 75.5g piece of iron at 22.2 degrees celcius what is the final temperature?

158. ## World History

Among the factors that brought about European colonialism, which of the following supported concepts of racial superiority? A. The introduction of the steam engine and the telegraph B. Social Darwinism C. Economic and trade opportunities D. the machine gun

asked by Minerva Nall
159. ## Wording/Vocab

Is there a word that means to create life, similar to what Dr.Frankenstein did?

160. ## Finance

Your company is considering diversifying its investment in financial securities into both stocks and bonds. You are asked to evaluate the following alternatives and make your recommendations as to the securities that your company should select. Bonds:

161. ## college algebra

Using a phone card to make a long distance call costs a flat fee of $0.80 plus$0.33 per minute starting with the first minute. Write a function for the cost of a long distance call C(x) in terms of x minutes for this situation.

162. ## Physics

A 2.32 kg block slide down a ramp from a height of 4.19 m. The block has a speed of 3.25 m/s when it reaches the bottom. There is friction. What is the work (in J) done by gravity? What is the work done by friction? I found the work of friction already.

163. ## chemistry

Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)-2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)

164. ## algebra

Consider the f(x)=srt(x+1/x-1) and g(x)= sqrt(x+1)/sqrt(x-1). Explain why f and g are not the same function. Thank you!

asked by Trish Goal
165. ## Physics

In the movie Superman, Lois Lane falls from a building and is caught by the diving superhero. Assuming that Lois, with a mass of 45 kg, is falling at a terminal velocity of 56 m/s, A)how much force does Superman exert on her if it takes 0.7 s to slow her

167. ## Math

X^x-31x+108=0

168. ## Statistics

According to a national poll conducted in 2010, seventy percent of teens reported having sent or received a text message while driving. Assume that I randomly survey 14 teens and asked them whether or not they have sent or received a text message while

169. ## ELA

Correct the possessive nouns. The sisters-in-law potluck was a sucess. (plural) Carlos dog ran home. (singular)

170. ## Physcis

What is the radius of a real or imaginary nucleus of 42X^85?

171. ## Grammar

What is the irregular plural noun? The teams of oxen pulled the plows across the field. (I CANT FIND THE ANSWER DEPENDING ON THE DEFINITIONS ON THE PAPER AND ONLINE)

172. ## coustmary units

How many feet there are in 198inches ?

173. ## History

Who were the Progressives in the 1920s? I know that they had something to do with farmers. But were they themselves farmers?

174. ## Corporate Finance

Your company is considering diversifying its investment in financial securities into both stocks and bonds. You are asked to evaluate the following alternatives and make your recommendations as to the securities that your company should select. Bonds:

175. ## physics

A 35.2 kg wagon is towed up a hill inclined at 18.3◦ with respect to the horizontal. The tow rope is parallel to the incline and exerts a force of 125 N on the wagon. Assume that the wagon starts from rest at the bottom of the hill, and disregard

176. ## Physics

Intensity of 4Mhz in 1.54mm = 2W/cm2 at 4cm intensity =? I know the answer is 0.32, but I do not understand why. Can you please explain? I did figure out that Attenuation= 8db. 4/2 x 4cm = 8db. Thank you in advance. I appreciate it!

177. ## English

Am I right to say the following sentences has 2 adjective clauses. The boxes in that closet belong to my nephew who has moved away. in that closet who has moved away

178. ## Health

The Muscle mass belongs to the posterior group.

179. ## Theories and issues in working with school-age chi

Which of the following is at the base of the quality pyramid?  A. Procedures B. Health C. Safety D. Environment  D.

180. ## Math

Use the distributive property to rewrite the expression 1/2(C-8)=

181. ## Math Homework

Solve the inequality and express the answer in interval notation: 1.) 3x^2+2x>2x^2-3 2.) 4x^2-x

182. ## College Algebra

The average cost of a 1 minute commercial on a leading network channel was 146,000 in the fall of 1999. This was a 8% decrease from the the cost a year earlier. What was the cost of a 1 minute commercial on the channel in the fall of 1998?

183. ## History

How do you write nazis properly Like there's nazis, nazi, nazis', nazi's... When should you use each of these forms

184. ## Math

after a flood on the Red River, 1200 L of water were pumped out of a basement in 8 h. What was the unit rate of outflow?

185. ## English

1. This digital camera is so small that it can fit in my pocket. 2. This digital camera is so small that it can fit my pocket. --------------------------- Which one is correct? Do we have to use 'fit in' or 'fit'? In Sentence 1, what is the part of speech

186. ## English

1. The coffee was so good that I had another cup. 2. The coffee was so good that I had another cup of coffee. --------------------------- Does #1 mean #2? Does 'had' mean 'drank'?

187. ## algebra

|x| + 5 = 18 5 or -5 13 or -13*** |y + 4| < 1 -5 < y < -3 -3 < y < 5***? -4 < y < 1***? 1 < y < 4 |2t| - 5 = 7 t = 1 or -1 t = 6 or -6*** t = 10 or -10 t = 12 or -12 |a| -3/4 = -5/8 1/8 or -1/8 7/8 or -7/8 1 3/8 or -1 3/8 no solution Please help!? Not good

188. ## Chemisty

Need Boys #'s

189. ## Algebra

(2a - b)^3 = 8a^3 - 8a^2b + 4ab^2 - b^3 7x^3(2x + 3) = 14x^4 + 21x^3

190. ## Pre-Calc/Trig

I have looked this up, but still cant figure out what it is.. What is the projectile motion function?

191. ## Chemistry

How much energy is required to raise the temperature of a 34.4g Al bar from 20.0 to 35.5 degrees celcius?

192. ## government

Donna Edwards What are 3 major issues the candidate believes in?

193. ## eng

describe your adrenaline when you are scared & terrified & don't know what to do!

194. ## Computer Engineering (microcomputers)

Count the number of bytes: Modify any one of the last three programs, to also count the total number of bytes actually copied, the count should appear in a register. I suggest you set a breakpoint at the INT 20 instruction, because the registers can be

195. ## physics

016 (part 1 of 2) 10.0 points A speedboat increases in speed from 17.9 m/s to 31.8 m/s in a distance 188 m. Find the magnitude of its acceleration.

196. ## math

What is the area of a rectangular room that is 3¾ yards long and 3⅓ yards wide

197. ## Algebra

(x^2 + 4x + 1) / (x - 5) = x + 9 + (46/(x - 5))?

198. ## physics

The velocity v(t) of a particle is plotted as a function of time. The scale on the horizontal axis is 9 s per grid square and on the vertical axis 2 m/s per grid square. Initially, the particle is at x0 = 43 m.

199. ## physics

A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2 . What is the speed of the car after it has traveled 67 m? Answer in units of m/s 014 (part 2 of 2) 10.0 points How long does it take the car to travel 67 m? Answer in units

200. ## algebra

Simplify the expression below completely ( x^2-x-30)/( x^2-25)

201. ## Math

While remodeling her house , Ms.Puliafici paints her cabinets . There are 210 square feet of cabinets.She can paint 20 square feet every 1/2 hour . How long will it take her to finish the cabinets ?

202. ## math

How do you solve this? 5x- [1.5 -3.6] [0.2 1.3] [-0.3 2.8]= [-5.6 1.7] 5x/5[-1.5 -3.6] [0.2 1.3] [0.3 -2.8]=[-5.6 1.7] x = [-1.5 3.6] [0.2 1.3] [0.3 -2.8]=[-5.6 1.7] [-1.5 + 0.2 + 3.6 + 1.3] [0.3 + -5.6 + -2.8 + 1.7] x = [-1.3 4.9] [-5.3 -1.1] I have tried

203. ## The practice of working with school age children

What tool can you obtain from schools to help you plan year-round programming? A. Sewing machine B. Policy and procedures manual C. Public transportation D. Academic calendar B.

204. ## math

Hanna and Fran have $120, Hanna and Pete have$230. Pete has 6x more than Fran. How much money does Hanna have?

205. ## Pre-Calc/Trig

How?? I only know how to convert standard form functions into intercept form, but I do not understand how to do this. Convert the functions into standard form. 1.y=2(x-4)(x+3) 2.y-2=-3(x+4)^2

206. ## math

Anna starts the race 10m ahead of ping.ping runs at 20%faster tan anna`s speed.they will be level in the race after 9seconds.find average speed of anna

207. ## math

In three successive years the price of the common shares of Bedrock Resources Ltd. fell 40%, 60%, and 70% ending the third year at 50 cents. How much (in dollars and cents) did the share price drop in the second year?

208. ## Theories and issues in working with school-age chi

A child caregiver who is using the statement, "Say please," is practicing _______ socialization. A. external B. internal C. intentional D. unintentional

209. ## The practice of working with school age children

A program that includes creative arts and drama, indoor and outdoor play, and teacher-led and child-initiated activities is an example of a(n) _______ curriculum. A. competitive and stressful B. safety-focused and responsible C. balanced and integrated D.

210. ## Theories and issues in working with school-age chi

The stage described by Erik Erikson as most commonly seen in seven-year-old children is  A. initiative vs. guilt. B. industry vs. inferiority. C. trust vs. mistrust. D. autonomy vs. shame and doubt.  Is the answer C.

211. ## English

Each shipment of VSV-EBOV will be packed in a special container with dry ice, at a temperature of -80 degrees Celsius, or -112 degrees Fahrenheit. The vaccine was developed at the National Microbiology Laboratory in Canada. Can someone summarize this in

212. ## Algebra

Find the equation of the line, in slope-intercept form, that satisfies the given conditions. The graph is perpendicular to the graph of y=3x-1 and passes through the points whose coordinates are (4,-2). Y=______

213. ## math

9/10-3/5 find the difference

214. ## History

Why the progressive party( when Thomas Crerar was the leader) fail. I looked on Wikipedia but I didn't understand it. Can someone explain or summarize it in one or a few sentences

215. ## chemistry

Use the molar mass of the following in order to calculate the number of moles from the given masses. Watch the significant figures a) 0.025 g of oxygen b)0.657 g og copper c) 0.7 g of chlorine I know how to calculate with finding the molar mass but not

216. ## Algebra

Temperature AF 40 1000 60 1840 70 2260 85 2890 Find a linear model for the number of acre-feet of water that evaporate as function of temperature. E(T)= Is the answer E(T)=42T-960?

217. ## Algebra

Find the dimensions of the rectangle of the largest area that can be enclosed by 200 meters of fencing

218. ## algebra

Let f be a function such that f(x+y)=x+f(y) for any two real numbers x and y. If f(0)=2, then what is f(2012)? Thank you!

asked by Trish Goal
219. ## chemistry

Is this correct? 3.84 mol(2 H2O/7.68)????

220. ## Social Science

I am confused, what is the difference between basic tribunal and war crime tribunal. Thank You

221. ## Physics

A circular pond of radius 12 m has a layer of ice 0.25 m thick. On a spring day, the temperature of the water below the ice is 4.0°C and the temperature of the air above is 11°C. What is the rate of heat transfer through the ice, in kW?

222. ## Theories and issues in working with school-age chi

_______ proposed that much of a child's learning comes from modeling the behavior of others.  A. Howard Gardner B. Jean Piaget C. Albert Bandura D. Robert Havighurst C.

223. ## biology

You carried out a 10-fold dilution series. You started with tube 0 which contained an overnight culture of E. coli. You estimated the original culture contained 6 x 108 cell/ml using McFarland nephlemeter standards. You plated 0.1 ml volumes of a number of

224. ## Physics

A car, moving along a straight stretch of highway, begins to accelerate at 0.0235 m/s 2 It takes the car 67.8 s to cover 1 km.How fast was the car going when it first began to accelerate?

225. ## The practice of working with school age children

A _______-centered program is most helpful to the children served. A. school B. parent C. child D. family C.

226. ## biology

dont even know where to start You prepared a 10-fold dilution of a culture out to 10-9. You initially estimated there were between 3 x 108 cells/ml and 5 x 109 cells/ml in the original cell suspension. Which tube dilutions would you plate to ensure you

227. ## Language Arts

What is the theme of the book catching jordan?

228. ## government

when you research A politician what do u learn about politics

229. ## Math

There are 18 fewer bus riders than walkers. There are 6 walkers. How many students ride the bus?

230. ## medication

what works better for headaches motrin or advil

231. ## Chemistry

1/10e-8 in scientific notation. How do I solve this please.

232. ## Math

Solve algebraically, 1/x=(x-34)/(2x^2).

If I have an 80 in my class, and I get a 70 on my test which is 33.33% of my grade, what will my overall grade become

234. ## Physics

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=54300 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

235. ## Calculus

If y=sqrt (x^2+16), then d^2y/dx^2=?

236. ## Theories and issues in working with school-age chi

The Americans with Disabilities Act prohibits child care centers from discriminating against children based on which of the following? A. Economic or social status B. Race, religion, or gender C. Hearing impairment, blindness, or learning disability D.

237. ## S.S.

Ms.Sue can you please check my questions they are down below.

238. ## math

3 1/4 + 2 5/6 estimate each sum or difference

239. ## World History

So, last week Coach gave us 3 packets by Blackline Masters to do but I wasn't at school most of last so I didn't get them until Friday and he isn't giving me any extra time, and tneyre due tomorrow, and im kind of freaking out, does anyone know where I

240. ## research

Write a proposal for UNDP survey regarding tuberculosis in HIV patients for grant of 150,000 with duration of 9 months with its concept paper. It is not a real proposal and is only an assignment and can be short.I need the format to write this.

241. ## health

Oblique muscles are an example of which muscle feature? A. Direction of fibers B. Shape C. Size D. Location

242. ## Math

determine the values of a,b,c,and d for a sinusoidal equation in the form: y= a sin b(x-c)+d and y= a cos b(x-c)+d using the max= 23.1 and min= -19.7 to determine the value. how to determine the values? thank you..

249. ## Theories and issues in working with school-age chi

Which of the following exhibits adult supervision with full accountability? A. In-home care or out-of-home care in a center with a child and youth leader B. Sending a child to lessons or other youth groups to be looked after C. Self-care for the child in

250. ## physics

A beam of particles is directed at a 0.016-kg tumor. There are 2.1 x 1010 particles per second reaching the tumor, and the energy of each particle is 5.4 MeV. The RBE for the radiation is 14. Find the biologically equivalent dose given to the tumor in 16

251. ## chemistry

1/10^-8 in scientific notation

255. ## government

NO on banning federal health coverage that includes abortion. does this mean she doesnt support abortion

256. ## government

1. "Find a local candidate: Name, Office he/she is seeking, political party" so i live in maryland so would a local one be Joni Ernst

257. ## Physics

A beam of particles is directed at a 0.017-kg tumor. There are 2.4 x 1010 particles per second reaching the tumor, and the energy of each particle is 5.2 MeV. The RBE for the radiation is 14. Find the biologically equivalent dose given to the tumor in 27

258. ## Math

300 milliliters are equivant to how many liters?

259. ## S.S.

20. After Lincoln "fired" George McClellan, his successor, General _______ proved himself an equally inept commander at the Battle of Fredericksburg. A. Burnside B. Johnston C. Hooker D. Meade A?

260. ## English

Each shipment of VSV-EBOV will be packed in a special container with dry ice, at a temperature of -80 degrees Celsius, or -112 degrees Fahrenheit. The vaccine was developed at the National Microbiology Laboratory in Canada. Can someone summarize this in

261. ## English

1. I'll have tea instead of coffee. 2. I'll have tea in place of coffee. ------------------ Are both the same in meaning? Do you have any popular phrases which can be used for 'instead of'?

262. ## Statistics

2. Given the cumulative distribution function (cdf) F(x)=(0 x

263. ## History

What were the goals of the conservatives and the communist party in the 1935 election

A cylindrical glass of water (H2O) has a radius of 3.49 cm and a height of 9.85 cm. The density of water is 1.00 g/cm3. How many moles of water are contained in the glass?