# sylvia

Most popular questions and responses by sylvia
1. ## algebra

1. The geometric mean between the first two terms in a geometric sequence is 32. If the third term is 4, find the first term. 2. Insert a geometric mean between k and 1/k. 3. If 2 and 3 are two geometric means between m and n, fond the values of m and n.

2. ## Chemistry

How much Na2CO3 would you weigh to prepare M/20 Na2CO3 solution in 100cm3 volumetric flask?

3. ## Algebra

On a summer day in Cape Cod, the depth of the water at a dock was 4ft at low tide at 2:00 AM. At high tide 5 hours later, the heist of the water at the dock rose to 14 feet. Write a cosine function to model the height of the water at the dock x hours after

4. ## Chemistry

2Al + 3CuSO4 --> + 3Cu + Al2(SO4)3 * copper(II) sulphate is a hydrate 1.2g of CuSo4 50mL of water 1.0 g of aluminum foil What is the limiting reactant?

5. ## intermediate algebra

Mr. Lakandula would like to increase his production of milkfish due to its high demand in the market. He is thinking of making a larger fishpond in his 8000 sq. m lot near a river. Help Mr. Lakandulaby making a sketch plan of the fishpond to be made. Out

6. ## Algebra

1.A motorcycle has a reserved fuel of 0.5 liter which can be used if it's 3-liter fuel tank is about to be emptied. The motorcycle consumes at most 0.5 liter fuel for every 20 km of travel. a. What mathematical statement represents the amount of fuel that

7. ## Chemistry

If you place an aqueous solutions of CuBr2 (which is then Cu(H2O)4 2+) with solid KBr added to it in a hot water bath what do you observe and why?

8. ## math

EF is a median of isosceles trapezoid ABCD. Find EF if AB is equal to 3 inches, and CD is equal to 11 inches.

9. ## statistics

In this question, use Excel functions rather than Normal distribution tables. The number of new cars sold by "Ma's New Car Factory" in a financial year can be approximated by a normal distribution with a mean of 125,000 cars and a standard deviation of

10. ## Medcal Billing an Coding

I am stuck on this one coding scenario I'm hoping you can help me. I have gotten CPT code 90947 or 90945 but I am unsure which is the right one? I need a CPT code for an inpatient hospital scenario, Dialysis Progress Note. The patient was seen during CAPD

11. ## Hamilton

Julia studied math 3 1/3 hours during the 4 days before her last test. what was the average amount of time she studied each day

12. ## ALGEBRA

A car travels 20 kph faster than a truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How about the truck?

13. ## Physics

A 0.12-kg ball traveling with a speed of 40 m/s is brought to rest in a catcher's mitt. What is the size of the impulse exerted by the mitt on the ball?

14. ## MATH

If I put \$300 in an account that earns 5.5%, how much will there be in the account at the end of 21 years?

15. ## Chemistry

Calculate the weight of anhydrous Na2CO3 necessary to prepare M/20 solution in 100cm3 volumetric flask

16. ## chemistry

when aluminum metal reacts with iron (III) oxide to form aluminum oxide and iron metal, 429.6 kJ of heat are given off for each mole of aluminum metal consumed, under constant pressure and standard conditions. What is the correct value for the standard

17. ## Physics

A bowling ball has a mass of 6 kg and a speed of 1.5m/s. A baseball has a mass of 0.12 kg and a speed of 40 m/s. Which ball has the larger momentum?

18. ## Chemisty

Carbon dioxide is usually formed when gasoline is burned. If 30.0 L of Co2 is produced at a temperature of 1.00 X 103 C and allowed to reach room temperature (25.0 C) without any pressure change, what is the new volume of the carbon dioxide?

19. ## chemistry

In the experiment, a hydrate is heated to form an anhydrate. The masses of the before and after are measured and the percent of the water in the hydrate is calculated. If some of the hydrate spatters out of the crucible and isnt noticed, how will this

20. ## chemistry 101

if you had 14 moles of octane how many moles of carbon dioxide would you get?

21. ## Math calculus by rotation

Calculate the volume obtained by rotating around y= -3 the area between the curves x= y^2 -4 x+y+2=0 I did the Volume as an integral between (-4, 0) of (x^2 +x - 12 - 6(x+4) ^1/2) dx The method I used is seeing the solid as a washer(? Can someone help me

if a perimeter of a garden is 82 feet. the length is 5 more than twice the width.what is th width of the garden?

23. ## Algebra

I hope I can explain this. I can't draw the shape here, but it is a triangular prism that looks like a wedge of cheese. The height is 20 cm and the three sides are 13, 37, and 40 cm. There is also a line drawn from the corner of the two sides that are 13

24. ## physics

using the strap at an angle of 31° above the horizontal, a Grade 12 Physics student, tired from studying, is dragging his 15 kg school bag across the floor at a constant velocity. (a) If the force of tension in the strap is 51 N, what is the normal force

25. ## math

The United Nation declared that the world's six-billionth inhabitant was born on October 12, 1999 in Bosnia. Don't discuss what is not said. Discuss what is said. what is wrong with this statement according to what is allowed in statistics?

26. ## Accounting

Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

27. ## American Constitutional Law

In view of canons of construction and interpretation, name and explain three necessary elements that you must consider before drafting language to amend the U.S. Constitution. Where do I find the three necessary elements?

28. ## algebra

the sum of 4 times a number and -2 is equal to the sum of 5 times the number and -2. find the number.

29. ## Chemistry

A student prepared 200mL of 0.01M solution of calcium phosphate, Can(PO4)2. What is the concentration of calcium in parts per million? Relative atomic masses Can =40, P =31, O =16

30. ## ALGEBRA

In a water refilling stationthe time that a pipe takes to fill a tank is 10 minutes more than the time that another pipe takes to fill the same tank. If the two . If the two pipes are open at the same time, they can fill the tank in 12 minutes. How many

31. ## Algebra - area

I hope I can explain this. I can't draw the shape here, but it is a triangular prism that looks like a wedge of cheese. The height is 20 cm and the three sides are 13, 37, and 40 cm. There is also a line drawn from the corner of the two sides that are 13

32. ## precalulas

solve each equation over the given interval 2x=cosx for all values of x

33. ## physics

What is the acceleration of the system if both blocks have a mass of 5.0 kg, and the coefficient of kinetic friction is 0.11? [___/4] (b) Determine the tension in the rope.

34. ## epcc

How many moles of aluminum ions are present in 0.80 mole of Al2(SO4)3

35. ## physics

1)The difference of potential between terminals of a battery is 6V. How much work is done when a series of negative charges totaling 0.5 C are moved from one terminal to another? 2) Two parallel metal plates have opposite charges and a difference of

36. ## calculus

A rectangle is to be inscribed under the arch of the curve y=4cos(.5x) from x=-pi to x=pi. What are the dimensions of the rectanlge with the largest area and what is the largest area? please explain.

37. ## Accounting

Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

38. ## Chemistry

If you add Na2CO3 and AgNO3 together in a test tube what exactly would you observe and what would be the equation for the equilibrium system? If you then add HNO3 to the solution what exactly would you observe and what would be the equation for that

39. ## Statistics

(GRAPH) Sketch a normal curve that has a mean of 15 and a standard deviation of 4. On the same x-axis, sketch another normal curve that has a mean of 25 and a standard deviation of 4. Describe the two normal curves.

40. ## math

Owen and Ethan have \$175 together. How much money does each of them have if Ethan has \$33 more than Owen?

41. ## Statistics

Find the area under the normal curve in each of the following cases. 1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51 3. Between z = -0.76 and z =1.35 4. Between z= -0.26 and z = -1.76 5. To the left of z = 2.35 6 To the right of z = -1.31 7.

42. ## analytic geometry

1. Given the parabola defined by y^2 = -12x, find the coordinates of the focus, the length of the latus rectum and the coordinates of its endpoints. Find also the equation of the dielectric. Sketch the graph. 2. Find the eccentricity of an ellipse when the

43. ## physics

A particle travels to the right at a constant rate of 6.1 m/s. It suddenly is given a vertical acceleration of 1.8 m/s 2 for 4.5 s. What is its direction of travel after the acceleration with respect to the horizontal? Answer between −180◦ and +180◦

44. ## accounting

I have answer a hypothetical situation question as to what advice I would give to a business owner whose business in growing on how to make her accounting work more efficient. She manually enters in cash sales daily, makes purchase orders over the phone,

45. ## algebra

If my equation that I wrote does it matter how it is written. Does it matter if I write it' \$200+\$50h=c or c=\$200+\$50h or c=\$50h+200

46. ## chem lab

In a pottasium permanganate and oxalic acid titration..why do we add sulfuric acid to the oxalic acid solution and then boil it before titrating??

47. ## Math

1. Make a sketch of 5 rectangular open boxes such that a. the height of the boxes are the same, b. The boxes can hold 249cm^3, 504 cm^3,810 cm^3 and 468 cm^3 respectively. 2. Solve each quadratic equation by completing the square to determine the

48. ## Algebra

For each of the following expressions, determine all of the values of k that allow the trinomial to be factored over the integers. A) x^2 + kx - 19 B) 25x^2 + kx + 49 C) x^2 + kx + 8

49. ## analytic geometry

1. The orbit of the earth is an ellipse with the sun at a focus, the semi-major axes 93 million miles and the eccentricity is 1/60. Find the greatest and least distance of the earth from the sun. 2. A battle shipping is sailing at a straight line towards

50. ## Math

Sue buys 8.5 pounds of chicken to make tacos. She uses 0.3 pound of chicken for each taco. How many tacos can sue make?

51. ## math

If a basketball player missed 41 free throws out of 100, what fraction and what percentage of free throws did the player make?

52. ## Math

A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?

53. ## art

how mant difernet arts pices are there

54. ## analytic geometry

1. Given the parabola defined by y^2 =-12x, find the coordinates of the focus,the length of the latus rectum and the coordinates of its endpoints.Find also the equation of the directrix. Sketch the curve. 2. Find the eccentricity of an ellipse when the

55. ## Science

how many atoms of carbon in 18 grams of C3H8o

56. ## intermediate algebra

1. Two numbers differ by 8. If one-half the larger is added to one-fourth the smaller, the resulting sum is 22.Find the numbers. 2. Ten years ago a man was three times as old as his son. In 12 more years the son is three-fifths as old as his father. How

57. ## Algebra

1. A man completing a 40km trip finds that by travelling one more km per hour, he could have made the journey in 2 hours less time. At what speed did he actually travel? 2. One pipe alone can fill a tub in 6 minutes less than it takes a second pipe alo e

58. ## life orientation

in 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community

59. ## United States Constition

Details: Part I: Principles of the Constitution Create a chart or a matrix outlining the following primary principles of the Constitution: 1. Self-Government 2. Separation of Powers 3. Checks and Balances Write an analysis of 250-500 words on the

60. ## POS-301-0101 arizona government

Using 750-1,000 words, create a chronological narrative delineating the significance of the documents/events listed below that impacted the evolution of the United States Constitution. In your narrative, discuss each of the documents and/or events listed

61. ## American History

Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848).

62. ## algebra

I have a problem with break even analysis? the question is I'm trying to find the cost between 2 businesses to care for my lawn. The one company has an initial fee of \$200+\$50an hour for labor cost and the second company has an initial cost of \$300+\$25an

63. ## calculus

find an equation for a line that is normal to the graph y=e^x*x and goes through the origin.

64. ## Statistics

A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding standard score of the following values: 1. 69 2. 85 3. 70 4. 65 B. In a given normal distribution, the population standard deviation is

65. ## Physics

A projectile is kicked horizontally off a tall building with an initial velocity of 13.7 m/s. The projectile lands 56.2 m away from the base of the building. How long is the projectile in the air? How tall is the building? What is the velocity of the

66. ## analytic geometry

1. Find the equation of the asymptotic of the hyperbole x^2/9 - y^2/ 4 = 1. 2. Given the equation of a function 2x^2 + 5y^2 - 16x + 20y + 108 =0, translate the original so that the New equation will have no first degree terms. 2. Find the radius and the

67. ## Medical Billing and Coding

I need a CPT code for an outpatient hospital scenario, Radiology Report. Examination: MRI of brain with contrast. Clinical symptoms: Slurred speech, right arm weakness. Magnetic resonance examination of the brain was performed prior to contrast utilizing

68. ## Physical Science

Beginning at rest, you accelerate at a rate of 2.5 m/s^2 for 12 seconds. What is your final velocity?

69. ## World History

In what ways did Islam create the first “world civilization?” How was Islam changed by contact with indigenous faiths in Africa & Asia? How did Byzantium preserve & perpetuate the traditions of Rome? What roles did commerce play in the transmission of

70. ## algebra

For me to solve the system of equations for the total cost of lawn care using the tequnique substitution am I right to say: c=\$200+\$50h c=\$300+\$25h would be c=\$250 c=\$325

71. ## Physics

Could a simple machine such as a lever, a pulley system or a hydraulic jack be considered a heat engine?

72. ## Physics

Which of these types of motors or engines are heat engines? a. an automobile engine b. an electric motor c. a steam turbine

73. ## Physics

A 0.4-kg ball has a velocity of 20 m/s. a. What is the kinetic energy of the ball? b. How much work was required to lift the box to this position?

74. ## ECONOMICS

WHAT IS HORIZONTAL INTERGRATION

75. ## economics

wHAT IS VERTICAL INTERGRATION

how many diffent arts are there in the whole world

77. ## American History

Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848)

78. ## calculus

the equation cosx=x has a solution in what interval?...the answer is given as [0,pi/2] can someone please explain why?? thnks

79. ## com 220

identify example of bias fallacies and specific rhetorical devices in the speech how did the speacher address arguments and counter arguments ? were the speacher's argument effective explain your answers.

80. ## english

help unscramble lesfat

81. ## Health

Is giardiasis transmitted through direct and indirect contact with infected fecal material or by touching the moist lining of the eyes and nose? Isn't it transmitted through direct and indirect contact with infected fecal matter?

82. ## analytic geometry

1. Find the longest and shortest distance from (10, 7) to the circle x^2 + y^2-4x-2y-20=0 2. From the start, a man runs 4km towards north, 3 km towards east and takes a rest. Draw the line from starring point to resting point and line from resting point to

83. ## History

Can I study Archeology while I did mathematical Literacy at school ?

84. ## U.S. constitution

Using 750-1,000 words, create a chronological narrative delineating the significance of the documents/events listed below that impacted the evolution of the United States Constitution. In your narrative, discuss each of the documents and/or events listed

85. ## geometry

Do the following playing cards have symmetry: 4 of Spades; 9 of Clubs; 7 of Diamonds; 5 of Hearts? If so, explain the type of symmetry.

86. ## human services

how success wisconsin human services in meeting the needs o its demographic group

87. ## American History

I need asap homework help

88. ## staistics/ math

A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to make calls. By 11:00

89. ## statistics

. A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to make calls. By 11:00

90. ## Intro to LAN technologies

58. You have been contracted to build a network for a multimedia development firm that currently uses a 10-Mbps Ethernet network. The company requires a high-bandwidth network for the multimedia team, which constantly views and manipulates large files

91. ## algebra

need help with fractions

92. ## Writing Essays

Im writing an essay and i have to include quotes with citations. if i wanted to include this quote: Dr. David M. Kent, founder of Lifestyle Lift, states, “It warms my heart to see two of our surgeons take part in such a noble cause." What would be the

93. ## Geography

Calculate the distance between town a latitude (30n) and town b on(latitude 70)

94. ## Chemistry

How to identify anions

95. ## Math

Find the roots using quadratic formula 1. X^2+7x =4 2. 4x^2 - 4x +1=0

96. ## cpcc

a small plane is traveling due south a t a velocity of 90 m/s. It suddenly encounters a tailwind of 27 m/s heading due south. what is The "air velocity" of the plan stays the same....but what is the resultant velocity (aka..."ground velocity") of the

97. ## analytic geometry

Determine the acute angle between the lines 3x - 7y = 21 and 5x + 3y = 15.

98. ## physics

Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction

99. ## Math

Sara cycled 11 miles from home to ranch in 1 1/2 hour. How many miles did she cycle per hour?