# Questions Asked onMarch 27, 2012

1. ## chemistry

A 0.100 M solution of K2SO4 would contain the same total ion concentration as which of the following solutions? A. 0.0800 M Na2CO3 B. 0.100 M NaCl C. 0.0750 M Na3PO4 D. 0.0500 M NaOH

2. ## Chemistry

Calculate the change in PH when 6 ml of 0.1 M HCl is added to 100 ml of a buffer solution that is 0.1 M in NH3 and 0.1 M in NH4Cl. And calculate the change in PH when 6 ml of 0.1 M NaOH is added to the original buffer solution.

3. ## algebra

why did the gyro go into the bakery?

4. ## physics

A 70-kg fisherman in a 138-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.8 m/s as in the figure below. Neglecting water resistance, and assuming the boat is at rest before the package is thrown, find the

5. ## Physics

Gamma-ray bursters are objects in the universe that emit pulses of gamma rays with high energies. The frequency of the most energetic bursts has been measured at around 3.0 × 10 21 Hz. The speed of light is 3 × 10 8 m/s. What is the wavelength of these

6. ## physics

Your friend of mass 80 kg can just barely float in freshwater.Calculate her approximate volume.

A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.90 106 m/s. Relative to the center, the tangential speed is vT = 3.00 105 m/s for

8. ## language arts

tell which letter is a correct answer to the questions. a question may have more than one right answer. Which of the following can be inflamed? a. a wound b. a menu c. an interrogation d. a congregation (I know for sure an answer is 'a' but I'm wondering

9. ## ms.sue 5 grade math

1-Becky made 4 quarts of chicken noodle soup in a big pot, then served -cup bowls of soup to 6 people. How much soup is left in the pot? (1 qt = 4 c) A. none B. 1 qt 3 c C. 1 qt 1 c D. 3 c my son put answer (B) 2- A bedroom has the dimensions shown. What

10. ## CHEMISTRY

a) Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). b) Calculate the change in pH when 4.00 mL of 0.100 M NaOH(aq) is added to the original buffer

12. ## chemistry

Consider the cell: (Pt) H2/H+ || (Pt) H+/H2. In the anode half-cell, hydrogen gas at 1.0 atm is bubbled over a platinum electrode dipping into a solution that has a pH of 7.0. The other half-cell is identical to the first except that the solution around

13. ## physics

A spiral spring stretches 4 cm when a mass of 0.5 kg is suspended from it. what is the spring constant?

14. ## physics

Which of the following is true for popcorn kernels and the water molecules inside them during popping? a. The temperature of the kernels increases. b. The water molecules are destroyed. c. The kinetic energy of the water molecules increases. d. The mass of

15. ## Chemistry

How much CuSO4.5H20 would you need to prepare 6 grams of copper ammine complex, [Cu(NH3)]SO4.H20? There is only 1 ammonia molecule in the copper ammine complex. please answer asap, thanks!

16. ## Statistics

A machine is used to fill soda bottles in a factory. The bottles are labeled as containing 2.0 liters, but extra room at the top of the bottle allows for a maximum of 2.25 liters of soda before the bottle overflows. The standard deviation of the amount of

17. ## math

A rectangular lot is bordered on one side by a stream and on the other three sides by 360m of fencing. Find the dimensions of the lot in order to maximize area. (Also, does it make sense if the answer I got is 180m width, 90m length?)

18. ## Physics

An object located 18 cm from a convex mirror prodeucses a virtual image 9 cm from the mirror. What is the magnification of the image?

19. ## math

Angie drew a number line and labeled 0 and 1. To show 5/12, how many parts should she divide the distance from 0 to 1?

20. ## Physics

A garden roller is pulled with a force of 200N acting at an angle of 50* with the ground level.Find the effective force pulling the roller along the ground.

21. ## math

Louise is creating a 1-foot long comic strip. If she has marked 0.5 on her paper, what should she do to find 1 foot? Subtract 0.5 Add 0.2 Multiply 0.5 Add 0.5

A 2.10 kg frictionless block is attached to an ideal spring with force constant 315N/m . Initially the block has velocity -3.75m/s and displacement 0.270m . Find (a) the amplitude of the motion. (b) the maximum acceleration of the block. (c) the maximum

23. ## Chemistry II

You place 1.234 g of solid Ca(OH)2 in 1.00 L of pure water at 25°C and it partially dissolves. The pH of the solution is 12.40. Estimate the Ksp for Ca(OH)2.

24. ## math

If you roll a fair number cube 30 times, how many times would you expect to roll a number less than 3

25. ## English

i please need help with two short stories today. i write the first one here it be called Chicken-Hips. The women of the household clucked disapprovingly when they saw me. It was the first time I had worn African clothes since my arrival in tiny, dusty

26. ## Physics

(True or False) One Kilowatt-hour is equal to the energy consumed by an electric device of 1 W for 1 hour

27. ## math

LOGIC: I plus onehalf of square plus zero plus onehalf of diamond plus center of the sea plus threefourth of X plus zero plus center of the sun?

28. ## Microbiology

Why do you suppose Streptomyces griseus produces an enzyme that inactivates streptomycin? Why is this enzyme produced early in metabolism?

29. ## physics

A 70-kg fisherman in a 138-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.8 m/s as in the figure below. Neglecting water resistance, and assuming the boat is at rest before the package is thrown, find the

30. ## Physics

A dog, with a mass of 8.0 kg, is standing on a flatboat so that he is 26.8 m from the shore. He walks 8.6 m on the boat toward the shore and then stops. The boat has a mass of 36.0 kg. Assuming there is no friction between the boat and the water, how far

31. ## chemistry

For the reaction: H2PO4- + HAsO42- ---> HPO42- + H2AsO4- Which pair exists as base in the equilibrium? H2PO4- & H2AsO4- are proton donors,therefore they are conjugate acids. HPO42- & HAsO42- are proton acceptors,therefore they are the base pairs asked in

32. ## physics

Sam, whose mass is 82 {\rm kg}, takes off across level snow on his jet-powered skis. The skis have a thrust of 240 {\rm N} and a coefficient of kinetic friction on snow of 0.11. Unfortunately, the skis run out of fuel after only 15 {\rm s}.

33. ## physics

Suppose that you balance a 6kg ball on the tip of your finger, which has an area of 1 cm^2 Find the pressure on your finger.

34. ## chemistry

Hydrogen and oxygen react to produce water according to the equation below. 2 H2 + O2 2 H2O How many liters of hydrogen at STP are needed to produce 0.24 mol H2O?

Chris cuts half a rectangular lawn, 40m by 30m, by mowing strips of equal width around the perimeter. Jerri cuts the small rectangle in the middle that's left. How wide a strip does Chris cut so that they share the work equally? Solve by using quadratic

36. ## ms.sue 5 grade math

1-Becky made 4 quarts of chicken noodle soup in a big pot, then served -cup bowls of soup to 6 people. How much soup is left in the pot? (1 qt = 4 c) A. none B. 1 qt 3 c C. 1 qt 1 c D. 3 c my son put answer (B) 2- A bedroom has the dimensions shown. What

37. ## probability

there are 4 white balls and 6 red balls in a sack. If two balls are taken out successively ( the first ball is not replaced ) what is the probability that the balls are drawn are of different colors?

38. ## math

Complete in Metric Conversions: Estimate the cost ($) of the concrete required to construct a concrete sidewalk shaped as shown on the board. The required depth of the concrete in the sidewalk is 4 inches and the concrete costs$105/cubic yard.

39. ## Physics

The vector position of a 3.45 g particle moving in the xy plane varies in time according to 1 = 3 + 3t + 2t2 where t is in seconds and is in centimeters. At the same time, the vector position of a 5.00 g particle varies as 2 = 3 − 2t2 − 6t. Determine

40. ## statistics

At a local high school students were randomly assigned to one of two math teachers- Mrs smith and mrs jones. After the assignment, Mrs Smith had 30 students and mrs jones had 25 students. at the end of the year each class took the same standardized test.

41. ## macroeconomics

If the economy currently has a frictional unemployment rate of 2 percent, structural unemployment of 2 percent, seasonal unemployment of 0.5 percent, and cyclical unemployment of 2 percent, what is the natural rate of unemployment? Where is the economy

42. ## physics

The Young's modulus for steel is 2x1011 and its rigidity modulus is 8x1010 Nm-2. Find the Poisson's ratio and its bulk modulus.

43. ## Chemistry

If 33.6 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass? AND if 2.1 moles of CaCl2 are dissolved in enough water to make a .92 liter solution what is the resulting molarity? Please help and

44. ## Statistics

Find the probability P(E or F) if E and F are mutually exclusive and P(E)=0.30 and P(F) =0.47

45. ## physics

The Young's modulus for steel is 2x1011 and its rigidity modulus is 8x1010 Nm-2. Find the Poisson's ratio and its bulk modulus.

46. ## Physics

The vector position of a 3.45 g particle moving in the xy plane varies in time according to 1 = 3 + 3t + 2t2 where t is in seconds and is in centimeters. At the same time, the vector position of a 5.00 g particle varies as 2 = 3 − 2t2 − 6t. Determine

47. ## ballou high school

The smith family is going to buy a home for 150,000 they will need a 10% down payment how much will they need

48. ## physics

A 6.2kg piece of metal displaces 0.80 L of water when submerged.Find its density.

49. ## physics

A convex lens is needed to produce an image that is 0.55 times the size of the object and located 30 cm from the lens on the other side. What focal length should be specified?

50. ## statitics

Suppose that a sample of n = 1,600 tires of the same type are obtained at random from an ongoing production process in which 8% of all such tires produced are defective. What is the probability that in such a sample 150 or fewer tires will be defective

51. ## Chemistry III

Assume you dissolve 0.240 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.16 102 mL of solution and then titrate the solution with 0.153 M NaOH. C6H5CO2H(aq) + OH -(aq) C6H5CO2-(aq) + H2O(l) (a) What was the pH of the original benzoic

52. ## physics

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through

53. ## physics

A block of wood of mass 6.0 kg slides along a skating rink at 12.5 m/s^2 [w] . The block slides onto a rough section of ice that exerts a force of 30 N force of friction on the block of wood. The acceleration of the block of wood is 5.0 m/s^2 [E] and it

54. ## math

Which shows the gymnastic scores in order from least to greatest? 9.72, 9.8, 9.78, 9.87 9.78, 9.72. 9.87, 9.8 9.78, 9.8, 9.72, 9.87 9.72, 9.78, 9.8, 9.87

55. ## physics

A block of wood of mass 6.0 kg slides along a skating rink at 12.5 m/s^2 [w] . The block slides onto a rough section of ice that exerts a force of 30 N force of friction on the block of wood. The acceleration of the block of wood is 5.0 m/s^2 [E] and it

56. ## Physics

a 4 kilogram ball moving at 8 meters per second to the right collides with a 1 kilogram ball at rest. After the collision, the 4 kilogram ball moves at 4.8 meters per second to the right. What is the velocity of the 1 kilogram ball?

57. ## statistics

Suppose that SAT scores among U.S. college students are normally distributed with a mean of 450 and a standard deviation of 150. What is the probability that a randomly selected individual from this population has an SAT score at or below 600?

58. ## Physics

The vector position of a 3.45 g particle moving in the xy plane varies in time according to 1 = 3 + 3t + 2t2 where t is in seconds and is in centimeters. At the same time, the vector position of a 5.00 g particle varies as 2 = 3 − 2t2 − 6t. Determine

59. ## URGENT MATH HELP!

When a ball is thrown upward, its height, h, in metres, is given by h=1.5 +19.6t -4.9t², where t is the number of seconds after it is thrown. For what length of time is the ball above the ground?

60. ## Intermediate Algebra

Solve using the elimination method.Show work.If system has no solution state this or infinite solution 8x+10y=-34 16x-5y=-43

61. ## Chemistry

Predict the characteristic of the solutions of the following salts. 1.CrBr3 2.NH4ClO4 3.NaCl 4.NiSO4 5.GaI3 6.MgC4H4O5 7.K2CO3

How can a financial manager at a non-profit make better use of Web capabilities to enhance the financial position of the organization?

a market researcher predicted that the profit function for the first year of a new business would be p(x)= -0.3x^2 + 3x -15, where x is based on the number of items produced. will it be possible for the business to break even in its first year? thanks

64. ## statitics

Suppose that a sample of n = 1,600 tires of the same type are obtained at random from an ongoing production process in which 8% of all such tires produced are defective. What is the probability that in such a sample 150 or fewer tires will be defective

65. ## Chemistry

What quantity of heat is necessary to convert 50.0 g of ice at 0.0 C into steam 100,0 C? The heat of fusion is 80.0 cal/g, the heat of vaporization is 540 cal/g, and the specific heat of water is 1.00 cal/gC.

66. ## mathematical modeling

Use the 68-95-99.7 rule to solve: The amount of Jen's monthly phone bill is normally distributed with a mean of $48 and a standard deviation of$6. Fill in the blanks. 95% of her phone bills are between $_____ and$_____.

67. ## Physics

The image of a crayon appears to be 20.6 cm behind the surface of a convex mirror and is 3.32 cm tall. The mirror’s focal length is 52.6 cm. a) How far in front of the mirror is the crayon positioned? b) Calculate the magniﬁcation of the image

68. ## Physics

The vector position of a 3.45 g particle moving in the xy plane varies in time according to 1 = 3 + 3t + 2t2 where t is in seconds and is in centimeters. At the same time, the vector position of a 5.00 g particle varies as 2 = 3 − 2t2 − 6t. Determine

69. ## statistics

The time it takes Jessica to bicycle to school is normally distributed with an average of a third of an hour and a variance of 9 minutes. Jessica has to be at school at 8:15 am. What time should she leave the house so she will be late on 5% of the time?

70. ## Chemistry

Chemistry HELP - Rates of reaction, redox reactions? 10 points? An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH-(aq) >

71. ## US HISTORY

The "Cult of Domesticity" most accurately describes A. The lifestyles of factory women B. The responsibilities of farm wives C. The ideal of upper class, nonworking women D. The religious convictions of families in factory towns E. The role of Indian women

72. ## Chemistry

A 5.0 L sample of gas at 1.0 atm and 25 degrees Celsius is compressed to 0.05 L and 5.0 atm. What is the temperature at this new set of conditions?

73. ## Organic Chemistry

Design a procedure to separate a mixture of alcohols containing methanol, ethanol, 1-pentanol. Explain, with references to intermolecular forces, why this separation method is effective in this situation.

74. ## Science

While Carmen is at the park with her family, she walks up to a wishing well. She throws a penny down the well, and she hears a splash at the bottom. Which of the following best describes what happens as the penny falls? A)The force of gravity is equal to

75. ## Chemistry

when 5.0g of KOH is added to 100mL, of water, the temperature of the solution increases by 3 degrees celsius. Assume the density of the solution to be 1g/mL and specific heat capacity of the solution to be 4.184 J/g K. a. calculate the amount of heat

76. ## Math-verify~

A parallelogram is defined by vectors OA=(4,3) and OB=(1,1). Determine the length of the diagonals OA+OB=(4,3)+(1,1) =(5,4) sqrt(5^2+4^2) =6.403 OA-OB=(3,2) sqrt(3^2+2^2)=3.60 Therefore the length of diagonals are 6.40 and 3.60 units.

77. ## Geometry

The side length of square ABCD is 1 unit. Its diagonal, AC, is a side of square ACEF. Square ACEF is then enlarged by a scale factor of 2. What is the area of the enlargement, in square units?

78. ## English

this be emily carr story d'sonoqua D’Sonoqua I was sketching in a remote Indian village when I first saw her. The village was one of those that the Indians use only for a few months in each year; the rest of the time it stands empty and desolate. I went

79. ## physics

NEED HELP WITH ONLY PART C Two 135.1.0-W speakers, A and B, are separated by a distance D = 3.6 m. The speakers emit in-phase sound waves at a frequency f = 11800.0 Hz. Point P1 is located at x1= 4.50 m and y1 = 0 m; point P2 is located at x2 = 4.50 m and

80. ## Understanding percent

In the square, if part A is 1/4 of the square and part C is 1/10 of the square, what percent of the square is part B?

81. ## Chemistry

A 20.2 mL sample of a weak monoprotic acid, HX, requires 50.0 mL of 0.060 M NaOH to reach the equivalence point. After the addition of 30.0 mL of NaOH, the pH is 5.50. What is the Ka of HX?

82. ## math

sam's birthday cake was cut into 16pcs. after his party, 3 pcs. were left. what fraction of his cake was left? what fraction of his cake were eaten?

83. ## Chemistry

Calculate the concentration of all species in a 0.240 solution.

84. ## geometry

The volumes of two similar solids are 1331 cubic meters and 27 cubic meters. The surface area of the larger one is 242 square meters. What is the surface area of the smaller one?

85. ## math

rena bluestreak earned $12. She spent$8. what fractions of her earnings did she spend/ what fraction did they have left? the amount she spent is how many times as much as the amount she saved?

86. ## math

translate to an inequality. the average speed s, was between 80 and 100 mph. translation 80 s 100

87. ## Physics

You like to swim at a nearby lake. On one side of the lake is a cliff, and the top of the cliff is 36m above the surface of the lake. You dive off the cliff doing somersaults so as to have an angular speed of 6rev/min. How many revolutions do you make

88. ## Science

Which of the following explains why a parachute makes a person falling from a great height fall more slowly? A)The parachute reduces the friction in the air. B)The parachute pulls upward, so the fall is slower. C) The parachute causes air resistance, which

89. ## Algebra

A boat's crew rowed 7.5 downstream,with the current, in 1.5 hours. The return trip upstream against the current,covered the same distance,but took 2.5 hours. Find the crew's rate in still water and the rate of the current.

90. ## math

what is the lateral surface area of a right hexagonal prism whose base is a regular hexagon with sides measuring 8 incheslong and altitude measuring 6 inches tall

A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.90 106 m/s. Relative to the center, the tangential speed is vT = 3.00 105 m/s for

92. ## Physics

Consider a concave mirror with a focal length of 14.98 cm. a) Find the image distance when the object distance is 14.98 cm

93. ## Physics

An object accelerates uniformly from rest and covers 8m in 2 seconds. What is the distance covered in the third second?

94. ## calculus

a solid lies between planes perpendicular to x-axis at x=0 and x=17,cross section perpendicular to axis interval 17 greater or equal x & x greater or equal 0 are squares of diagonals go from parabolas y=-2x^(0.5) & y=2x^(0.5). find the volume of the solid

Do you see the job of the non-profit financial manager as getting easier or more difficult in the future?

96. ## physics

A body of mass M1 collides elastically with another body of mass M2 at rest. After collision the velocity of M1becomes ¾ times of the velocity. Find the ratio of their masses

97. ## physics

A person exerts a horizontal force of F = 174 N in the test apparatus shown in the drawing. (h = 0.33 m.) Find the horizontal force M that his flexor muscle exerts on his forearm.

Graph these points. Angle DFG has vertices D (–2, 4), F (–3, 1), and G (–1, 2). Find the vertices of the image after the rotation of 180° about the origin.

99. ## Chemistry

How many moles of oxygen molecules would be produced from the decomposition of 25moles of potassium trioxochlorate (v) ?

100. ## Chemistry

1. What is the pH of a solution whose [H3O+] is 1 X 10 -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10-3 M? 4. What is the pH of a solution with a [H3O+]

101. ## Science

While Carmen is at the park with her family, she walks up to a wishing well. She throws a penny down the well, and she hears a splash at the bottom. Which of the following best describes what happens as the penny falls? A)The force of gravity is equal to

asked by URGENT - HELP ME
102. ## physics

jack gives 50 kg jill a ride on a sleigh for 500 meters. he exerts a force of 45 Newtons on the rope of the sled at an angle of 30 degrees. He pulls her at a constant velocity. What is the coefficient of friction between the sled and the ground? How much

103. ## physics

Suppose that a police car on the highway is moving to the right at 26 m/s, while a speeder is coming up from almost directly behind at a speed of 37 m/s, both speeds being with respect to the ground. The police officer aims a radar gun at the speeder.

104. ## physics

An 73-kg bungee jumper is enjoying an afternoon of jumps. The jumper's first oscillation has an amplitude of 14 m and a period of 6 s. sprint constant is 80.1 n/m and max speed is 14.7 m/s. Treating the bungee cord as a spring with no damping, calculate

105. ## Chemistry

The reaction between NO (nitric oxide) and oxygen is a key step in the formation of acid rain. O2(g) + 2NO(g) → 2NO2(g) A series of experiments were run, each of which starts with a different set of reactant concentrations. From each experiment an

106. ## physics

A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. The object rolls without slipping along the track shown in the figure. The track ends with a ramp of height R = 3.0 m that launches the object vertically. The

107. ## Chem 2

Calculation in grams for a .100 M solution of NaC2H3O2 * 3H2O using a 100 mL volumetric flask?

108. ## statistics

Assume that a sample is used to estimate a population proportion p. Find the margin of error. 95% confidence; n = 250, x = 130

109. ## accounting

Bulldog Appliances uses the periodic inventory system. Details regarding the inventory of appliances at September 1, 2011, purchases invoices during the next 12 months, and the inventory count at August 31, 2012, are summarized as follows

110. ## English

1. What does he do when/after he gets on the bus? 2. He says hello to the driver and his friends. (Are the question and answer correct? Do we have to use 'when' or 'after' in this case?) 3. Is the fact that Venice doesn't have cars a problem? - Not at all.

111. ## physics

1 junction of a thermocouple is kept in melting ice and the other in boilin H20.The readin of currnt on a micro ammeter is 96mA.The micro ammetr reads 60mA when the hot junction is immersed in hot H2O.Find the temperature of the hot H20

112. ## Dressmaking

The outer edges of a stand collar are A)larger B) 1/8 in.smaller C)cut on the bias D)the same

113. ## Physics

A box of mass m=1.5 kg is attached to a spring with force constant k=12 and suspended on a frictionless incline that makes a 30 degree angle with respect to the horizontal. With the spring in its unstretched length, the box is released from rest at x=0.

114. ## geometry

the scale factor of two similar polygons as 4:7. the perimeter of the smaller polygon is 320 centimeter what is the perimeter of the larger polygon

115. ## Physics

How much thermal energy can you get out of a gallon of gasoline, and if all that energy could be transferred to the wheels how far could your car ideally go if the total force of friction it worked against at constant velocity was 2,200 Newtons

116. ## Intermediate Algebra

Convert this number to scientific notation 1,800,000

123. ## meanings

I was to make a word for creative arts class. Could you guess what my word means. I made it and it is supposed to be a challenge. What do you think "mudsul" means?

124. ## Intermediate Algebra

Use scientific notation to divide the following 2 numbers .Express the answer using scientific notation; retain at least3 decimal places (9.4*10^6)/(4.97*10^2)

135. ## APUSH

Please check? 1. a 2.c 3. e 4. b 1. Before the civil war the south's slave labor force a. was a self reproducing population b. was generally unprofitable to the planter class c. was an inflexible labor system d. was employed exclusively in the cultivation

136. ## language arts

choose two phrases to form a sentence that correctly uses a word. a. forbearance is b. fervor is c. a belief that one cannot make mistakes d. a willingness to live and let live I think it is b and d, am I right?

137. ## Spelling

a) the time to leave _ _ _ _ _ ture b) what is a base word for "communication"?

138. ## Biology

List two ways bacteria and blue-green bacteria differ. Any help would be appreciated. :)

139. ## Accounting1

Consider the following scenarios: (Please respond to each scenario) When we talk about "bad checks," are those always checks our customers have written to us? Explain. Would the company also write any bad checks and what are the repercussions for the same?

140. ## ie math

A right triangle has hypotenuse 8 and area 8. Find the perimeter? I think I have to apply Heron's formula to this question, but I don't know how to solve. Please help. Your help is very much appreciated!

146. ## math

Complete in Metric Conversions: Estimate the gallons of paint needed to cover the outside of a cylindrical silo which is 30 feet in diameter and 70 feet high. Do not include any roof area. The paint covers approximately 150 square feet/gallon.

147. ## chemistry

Consider two non-interacting Fermions (half-integer spin) confined in a “box” of length L. Construct the antisymmetric wave functions and compare the corresponding groundstate energies of two systems; one with particles of identical spin and the other

148. ## Chemistry

What is the likely source of error from reading a graph where the absorbance (y-axis) versus concentration (x-axis) shows non-deal behaviour. The graph is going in what looks like a line of best fit but then curves off a the end. At the end of the graph

149. ## algebra

The yearly production of a 6 foot orange tree is 40 pounds of oranges. A 16 foot tree produces 65 pounds.? Let H represent the height of an orange tree and p the number of pounds of oranges produced. a). List the ordered pairs. (H.P) What is the ordered

150. ## English

Writeacher, can you check these sentences, please? Thank you very much. 1) The Great Fire broke out in London in 1665. 2)London was hit by the Fire in ... 3) The Great Fire burst out (?) in London in.. 4)This accelerated a secret plan to bring in William

151. ## math

Which of the following has the least value? 5.45 8.02 4.99 13.2

152. ## Math-Corrections

Based on the survey,the librarian predicts that about two-thirds of the students in seventh grade will not like the new encyclopedia.Is this answer reasonable? Answer i got:yes

153. ## math

if 34 baby boys were born in a week and that was 54% how many girls were born in that week

154. ## College physics

Consider the two situations. In the first a machine must pull a box up a rough slope at constant speed. The mass of the box is 800 kg, the coefficient of kinetic friction is 0.2, and the slope is inclined at 15 degrees to the horizontal. In the second

155. ## Physics

(True or False) The cables used to transfer electric energy from the generating station to the consumers must be of low resistance to reduce losses due to joule heating

156. ## World History

Hi, I've been assigned a project where I'm playing the role of a history revionist that has to make a top ten list of the problems with bureaucracy in Qing Dynasty China. Also, this has to appeal to senior citizens somehow (that's my assigned audience).

157. ## math

what polygon has 9 diagonals?

My, My, Myy My, my, my The world running by Way too fast for your eye Could we slow it down Just to say good bye Or am i even justified Because of all the lies Can we slow it down Or will we just die? My, my, my I will miss my life as the days go by And

159. ## Chemistry

What is the density of CO2 at STP in g/L? How would I do this problem using dimensional analysis?

160. ## math

Complete in Metric Conversions: 24 kilometers to ____meters 172 flied ounces to ___gallons 1 bushel corn (56Lbs) to ____ kilograms 15 gallons to ___cubic feet. 4600 bushel corn at standard moisture to ___tons 0.5 cubic meters/second to ____gallons/minutes

161. ## Maaaaaaaath

the first three terms of an arithmetic sequence are x-2;2x+6 and 4x-8 respectively..determine.....(1)x (2) the 20th term (3) the sum of the first 20 terms of the sequence

162. ## biochem

I have 0.500ml of 3M ethanol and then I take 0.250ml of it and put it to 0.250ml of 0.06M phosphate buffer, what is the final concentration?

163. ## Chemistry

Calculate the change in PH when 6 ml of 0.1 M HCl is added to 100 ml of a buffer solution that is 0.1 M in NH3 and 0.1 M in NH4Cl. And calculate the change in PH when 6 ml of 0.1 M NaOH is added to the original buffer solution.

164. ## Math

Based on the data, of 40% Reading and 25% Math, Out of 240 students, how many would choose reading or math as their favorite subject?

165. ## Algebra

Two angles are complementary. The sum of the measure of the first angle and one-fourth of the second angle is 57.75 degrees. Find the measure of the angles.

166. ## geometry

The perimeter of . The extended ratio of the sides is 2:4:5. Find the lengths of the sides. It might help if you draw a picture.

167. ## physics

Can anyone help me on this one???????The temperature at the bottom of Lake Tahoe in the Sierra Nevada Mountains of California is 4°C year round. In which country is water at the bottom of lakes normally higher than this? A) Russia.B) Great Britain.C) New

168. ## Calculus

solve: Sin2x=Sinx

169. ## English

Is this a correct sentence Be careful whom you tell.

170. ## Math

The sizes of four drill bits are 3/16inches 1/8inches 3/4inches 5/8inches. Put them in order from least to greatest?

A right triangle has hypotenuse 8 and area 8. Find the perimeter? I think I have to use Heron's Formula for this question. Please help & show work. Thank you very much. Your work is very much appreciated.

asked by My Name Is Bob
172. ## Biochemistry

In one glass - 100,0 mL 0,100M KOH solution, in other - 100,mL 0,100M HNO2 solution. What is pH of solution, which was get when both solutions were mixed up (consider that V of forthcoming solution is sum of original solutions - 200,0 ml)

209. ## Math

Mr Thomas took 2hr to drive from Tokyo to Osaka.He then took another 4hr to complete the remaining 2/3 of the journey to Fukushima.His average speed for the 210km long journey was 35km/h. 1. If he reached Osaka at 12:30,at what time did Mr Thomas arrive at

210. ## Math

Jim has 400 ft of fence material and needs to enclose an area of 10,000 square feet for his garden as the diagram depicts. (The length of the house is 62 ft and the fence extends the same distance on either side of the house.) What must the dimensions of

211. ## English

Can you please check these sentences, too? Thank you. 1) Unless you improve your handwriting I won’t check your next paragraphs. 2) Unlike Sissy, who is described as a black-haired and black-eyed girl, Bitzer has a fair complexion, emphasized by the

Need to see if I have the answer correct on this review question. Which expression models the verbal description below? the number of markers, m, in 8 packages of markers. Would it be B? a. m + 8 b. 8m c. m divided by 8 d. m - 8 Thanks..

213. ## Math

In a maths class of 13 students, 2/3 of boys and 1/4 of the girls love maths. How many girls love maths

214. ## Math

Jillian must average at least 90 on two quiz scores before she can move to the next skill level. Jillian got a 92 on her first quiz. What scores could Jillian get on her second quiz in order to move to the next skill level? How could I answer this is an

215. ## Calculus

Find the volume of the solid formed when the area bounded by x^2-y^2=9, y=x+5, and the x axis is rotated about x=1.

216. ## Trigonometry

Prove: sin(A+B)+sin(A-B)/sin(A+B)-sin(A-B)=tanAcotB

217. ## chemistry

which is the best salt to use to melt ice without any side effects

218. ## chemistry

FIND THE PH IF THE {H30Z+1) IS 6.2 X 10-10 M

219. ## Math

Should the city build a homeless shelter downtown?Which sample is more likely to be biased? a.60 randomly selected downtown resturant customers b.60 randomly selected people at the post office

220. ## English

what kind of sentence is this? Arabic numbers were being used for the first time the concept "0" was baffling to many they wondered how a zero could for standing.

221. ## criminal justice

Which of the following is an ethical system that does not support using the individual as a means to an end

can streams run underground. Can they start above ground and run nunderground. PLease help me, I am so so stuck.

223. ## chemistry

how does the addition of a nonvolatile solute affect the vapor pressure of the solvent into which it is dissolved?

224. ## English

I still have to include the following sentences. I really hope you can help me check them. 1) All the commas in your paragraphs are set in place of periods. Divide your long sentences into shorter sentences consisting of subject, verb and complements. 2)

225. ## math

Complete in Metric Conversions: What is the tip speed (ft/min) of a 21 inch long rotary lawn mower blade that is connected to the output shaft of an engine operating at 3400 rpm?

226. ## PHI 103

Explain what logic can and cannot do?

227. ## Intermediate Algebra

State an equation that represent this situation. Mary invested one amount at 3% simple interest and a second amount at 9% interest ,earning $43.92 in one year.If she would have switched the amounts she would have earned$35.00.What were the 2 amounts?

228. ## English - ms. sue

ms. sue u be able help me with my english questions?

229. ## Log help

If a^3 + 3ab(a+b+3)+b^3 = 10ab, show that log (a+b)=1/3(log a + log b). Please show step by step. Thank you!

230. ## Spelling

Can anyone tell me the meaning of the word bade? Example for this sentence:The next morning John got up early and bade Rover goodbye.

231. ## devry

What should you consider when searching for useful sources?

232. ## com 156

What websites do you normally frequent? Are these websites credible? When is credibility more important and when is it less important? Support your answers with specific examples.

233. ## physics

A Hg thermomtr is calibrated by immersing it in melting ice and thn in boiling H20.The column of the Hg is respctively 2.9cm &29cm.Find the temperature whn the column is 10cm long

234. ## Civics

Is a trial of impeachment held with or without a jury? How about treaties? And murder?

235. ## Calculus

I am bit of confused from this question. I have shown the work below and to subtract, am I supposed to be X2 - X1, Y2-Y1, Z2-Z1? or X1-X2, Y1-Y2, Z1-Z2? ------------------------------------ A triangle has sides formed by the vectors PA=(2,7,3) and

236. ## Math 141

You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9%

237. ## written analysis

In weeks 1 and 2, via your introduction to the critical thinking process, you are briefly introduced to some of the most powerful and complex questions humans have ever asked: What is truth? What is knowledge? How do you know what you know? In this

238. ## simple subject

What is the simple subject in: The black and white Schnauzer barked all day long.

239. ## writing analysis

debate between proponents of intelligent design and evolution. i need an assay of 2 pages about those subject intelligent design and evolution

240. ## discrete math

The canonical representative of15^11 mod3337

242. ## physics

absolute zero is the same as

243. ## Hi

The interests of the West were satisfied by neither the Jeffersonians nor the Federalists between 1789 and 1815. I'm supposed to write a paragraph about it, but I don't understand what it is asking...

244. ## math

what is 3/8, 1/4, 3/4 in order from least to greatest

245. ## PHI 103

Explain what advantages we obtain by studying logic in terms of improving our reasoning.

246. ## math

Complete in Metric Conversions: A 12 food wide fertilizer spreader drops 45 pounds of fertilizer while traveling 625 feet. What is the fertilizer application rate in pounds/acre?

247. ## math

Complete in Metric Conversions: How many pounds of water are in a 36 ft diameter tank that is filled to a depth of 24 ft.

248. ## math

Complete in Metric Conversions: A lawn sprinkler covers a rectangular pattern of 20ft x 30ft. if the flow rate of the sprinkler is 2.5 gpm, derive a formula for calculating the time (hours) to apply D inches of water over one 20ft x 30ft area. What are the

249. ## math

find the lateral surface area of a right triangular prism if its altitude is five inches and its base is an isoceles right triangle with hypotenuse of length 10 inches

250. ## English

What are some of the major themes in the book "writing on my forehead" by Nafisa Haji?

251. ## math

Complete in Metric Conversions: 6000 kg to ___ tonnes (metric tons) 6000 kg to ___tons 1 acre-ft of water to ___gallons 32 psi to ___kpa 10 psfito ___ oz/in^2

252. ## Physics, Energy

The block is released from rest on the frictionless ramp. It compresses the spring by 20cm before momentarily coming to rest. What is the initial distance d? k=200N/m m=3kg angle=300 degrees The picture looks somewhat like this : (box is here) / / (spring

253. ## programming

1.which of the following statements allows many branches or alternatives paths? A.IF-THEN; B.ON-GOTO; C. GOTO; D. all of the above. 2.The system command ---- is used to tell the computer to execute the program A.LIST B.EXECUTE C.END D.RUN 3. -----notation

254. ## math

a survey of 50 people in Nj, 10 of them know the mayor's name in their neighboring city. Out of 5,500 residents how many would you predict know the name of the mayor of the neighboring city?

255. ## Intermediate Algebra

simplify the follwing expression in terms of i , the squareroot of -16

256. ## math help!!

1/x+2 + 1/X+4 =1 Solve by using quadratic formula.

257. ## math

Ms. Woods painted 174 watercolor pictures. Each painting took about 11 hours to finish. Which could be the total number of hours it took Ms. Woods to paint all 174 pictures?

258. ## written analysis

debate between proponents of intelligent design and evolution. i need an assy of 2 pages about intelligent design and evolution

260. ## Intermediate Algebra

Multiply the expression and simplify (-6x^-4y^4)*(-2x^4)

261. ## Statistcs

Assume that a ramdom sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confinence level. n=550, x=165, 95% confindence

262. ## History

Why is the War of 1812 called the second war of independence? I have b/c it was fought against the same country and it made the U.S independent and more respected. I need more, help please!

263. ## directions

can sombody explain to me step by step how to drive to mast charter school?

264. ## math

the perimeter of a room is 45 yards and the area is 120 square yards. what would be the perimeter and the area of the room on a scale drawing with the scale of 3 feet to 1 yard?

265. ## Dress code

What are some cons about dress codes?

266. ## math

Complete in Metric Conversions: A dozer is traveling at 5 miles per hour. How many seconds will it take to travel 160 feet?

267. ## math

what might you have if you don't feel well?

268. ## Intermediate Algebra

A dehydrated patient needs a 6.4% saline IV.Unfortunately the hospital only has bags of 6% and 8% saline solutions.How many liters of each of these solutions should be mixed together to yield 1 liter of the desired concentration?

269. ## to soccerstar

can you explain to me why its 2 times as much

270. ## chem

while measuring the effect of a catalyst on the reaction rate of two reactants , why would a chemist control the temperature,pressure and concentration of two reactants?

271. ## buckley

x-intercept -4:y - intercept -2 write an equation in slope - intercept form

272. ## science

A plane is flying at an angle of 20 N of east 230 m/s. what is the component of its velocity in the northward direction?

273. ## Pre-calculus

what is the domain of f[g(x)]? A.all the elements x in the domain of g for which g(x) is in the domain of f B.the range of x

275. ## economies

Identify the growth form 1950 to 2001 in volume of world exports. Explain the reasons why this occurred

276. ## MATH

The series 2(3a-1) + 2(3a-1)^2 + 2(3a-1)^3...Is given for wich values of a will the series converges?

277. ## math

[(11 ∙ 4. + 6] (mod 8)