# Heidi

Most popular questions and responses by Heidi
1. ## math

Mr.Shea saved \$2,500 in April. His monthly salary is Twice the amount he saved in April. In May, he saved a certain amount of money.He spent \$4,200 more than the amount he saved. How much did he save in May.

2. ## Math

Andrew has a combination of 8 quarters, dimes and nickels that add up to a value of 95 cents. How many of each coin does Andrew have?

3. ## Organic chemistry

If the aspirin crystals were not completely dried before the melting point was determined, what effect would this have on the observed melting point ?

4. ## psy

17. The higher the price of an antique, the greater people’s expectation that the object is rare. That, in turn, makes the antique appear more valuable. If the statements above are correct, then offering an antique for sale at a bargain price (Points :

5. ## Chemistry

Three balloons filled with three diffferent gaseous compounds each have a volume of 22.4 L at STP. Would these balloons have the same mass or contain the same number of molecules? Explain.

6. ## algebra

you invest \$2800 in an account that pays an interest of 5.5%, compounded continuously. calculate the balance of your account after 12 years.

7. ## Chemistry

Beginning with the ideal gas equation show how density of a vapor may be determined? I have so far: n = (PV)/(RT) d= m/V n= m/MW by rearranging i get d = P(m/MW)/RT

8. ## Physics

A downward force of 5.1 N is exerted on a -7.3 mcirco C charge. What is the magnitude of the electric field at this point?

9. ## Statistics

An unbiased die is thrown seven times. Find the probability of throwing it at least five six's.

10. ## Statistics/Probability

The probability the New Year's day is on Saturday is a randomly chosen year is 1/7. 15 years was chosen randomly. Find the probability that, (1) Exactly four of these years have a New Year's day on a Saturday. (2) At least two of these years have New

11. ## In need of algebra help!

You are making a rectangular table. The area of the table should be 10 ft^2. You want the length of the table to be 1 ft shorter than twice its width. What should the dimensions of the table be? Okay, so, I'm not sure how to put this into an equation. The

12. ## Math

1.64 as a mixed number in simplest form

13. ## Chemistry

How many grams of hydrogen can be produced by the electrolysis of water with a current of 0.290 A running for 5.00 min?

14. ## Statistics/Probability

The life span of a calculator has a normal distribution with a mean of 60 months and a standard deviation of 5 months. If a calculator is randomly selected, find the probability that the calculator has a life span of. (1) more than 50 months (2) between 4

15. ## psy

The higher the price of an antique, the greater people’s expectation that the object is rare. That, in turn, makes the antique appear more valuable. If the statements above are correct, then offering an antique for sale at a bargain price

16. ## Statistics

The life of an electric light bulb is known to be normally distributed with a mean of 2000 hours and a std. of 120 hours. Find the probability that the life of such a bulb would be. (a) greater than 2150 hours (b) within the range of 1850 hours to 2090

17. ## Microeconomics (need to see if i got these right.

31. If an increase in the price of a good leads to an increase in total revenue, then _____. (Points: 3) the supply curve must be price inelastic the demand curve must be price inelastic I CHOSE THIS ONE the supply curve is price elastic none of the above

A sample of 40 investment customers serviced by an account manager are found to have had an average of \$23,000 in transactions during the past year, with a standard deviation of \$8500. A sample of 30 customers serviced by another account manger averaged

19. ## Physics

Calculate the ratio of the drag force on a jet flying at 1049 km/h at an altitude of 10.0 km to the drag force on a prop-driven transport flying at 560 km/h and at an altitude of 5.00 km. The density of air is 0.380 kg/m3 at 10.0 km and 0.670 kg/m3 at 5.00

Mrs.Rossi wrote the following clues for a mystery number: •It is a 4 digit number •The tens are double the ones. •The thousands are double the tens. •The sum of the digits is 19. What number is it?

1) growth rates The stock price of the company is \$76 investors require a 14% rate of return on similar stocks If the company plans to pay a dividend of \$5.00 next year the expected growth rate of the company's stock price is ______ percent 2) non constant

22. ## science

A satellite completes one revolution of a planet in almost exactly one hour. At the end of one hour, the satellite has traveled 2.0 × 107 meters and is only 10 meters away from its starting point. What is the numerical value of the satellite's average

23. ## Chemistry

Calculate the percent composition of calcium acetate.

24. ## statisticss

The time taken by a man to deliver milk is normally distributed with, mean 12 minutes and standard deviation 2 minutes. He delivers milk everyday estimate the probability that he takes. (a) longer than 17 minutes (b) between 9 and 13 minutes

25. ## Finance questions

1) growth rates The stock price of the company is \$76 investors require a 14% rate of return on similar stocks If the company plans to pay a dividend of \$5.00 next year the expected growth rate of the company's stock price is ______ percent 2) non constant

26. ## Algebra

A rectangular box with the volume 320 cu ft is built with a square base and a square top. The cost is \$1.50/sg ft for the bottom, \$2.50/sq ft for the sides and \$1.00/sq ft for the top. Let x=the lenth of the base in feet. Express the cost of the box as a

27. ## Marketing Question

Technological changes do not directly affect what, how, when, and where products are to be marketed. Now is this true or false and why? This statement is false. We've come a long way from the weekly village markets and the later door-to-door salesmen,

28. ## Chemistry

How many moles of conjugate base (Na2HPO4) are present in 40mL of .010M buffer at pH 7.5 vs at pH 6? Buffer was made up of Na2HPO4 and NaH2PO4. pH=pKa +log[A/HA]; pKa=7.2.... When I did the calculations I got the same amount as if it were in a 0.1M buffer

29. ## calculus

27 ft of wire is to be used to form an isosceles right triangle and a circle. Determine how much of the wire should be used for the circle if the total area enclosed is to be a minimum? Maximum?

30. ## Physics

Two blocks with masses m1 = 1.40 kg and m2 = 3.00 kg are connected by a massless string, as shown in the Figure. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.390.In the figure m1 is on top of

31. ## Chemistry

To what volume should you dilute 50.0 mL of a 4.50 M KI solution so that 28.5 mL of the diluted solution contains 2.75 g of KI?

32. ## Algebra

A single-engine airplane carries enough fuel for an 8-hour flight. After the airplane has been flying for 1 h, the fuel tank begins to leak at a rate that would empty the tank in 12 h. How long after the leak begins does the plane have until it runs out of

33. ## Microecomonics (am i right..URGENT PLEASE)

11. If an economy has to sacrifice increasing amounts of good X for each unit of good Y produced, then its production possibilities curve is: (Points: 3) bowed out from the origin. I PICKED THIS ONE bowed in toward the origin. a straight line. a vertical

34. ## Microeconomics help please (urgent)

I just want an idea on how to do this, so will only post one example: For each of the following situations, decide whether the bundle Lakshani is thinking about consuming is optimal or not. If it is not optimal, how could Lakshani improve her overall level

Hi, Im learning about polymers. I did a lab to make slime where I mixed PVA glue & water. I then added borax to some water in another container, and the poured off the water from the wet borax. I then added the borax to the glue/water solution. I have to

36. ## math

40% to 525 what is original amount.

37. ## discrete math

Fill in the blanks: For all sets A and B, if A is in the set of B, then A union B in in the set of B. Proof: Suppose A and B are any sets and A in in the set of B. [we must show that __________] Let x be and element of _______. [we must show that

38. ## Math

A cyclist and a jogger start from a town at the same time and head for a destination 11 mi away. The rate of the cyclist is twice the rate of the jogger. The cyclist arrives 1.1 h before the jogger. Find the rate of the cyclist.

39. ## Physics, Statistics

Consider a series of 8 flips of a fair coin. (a) Calculate the probabilities for obtaining 0-8 heads. We will consider each of these nine outcomes to be macrostates of the system. (b) Calculate the entropy for each of these macrostates. I was able to

40. ## health

When a person has episodes of hypomania that shift back and forth with mild depression for at least two years, he or she has what form of bipolar disorder? A. BP-NOS B. Cyclothymic Disorder C. Bipolar I Disorder D. Bipolar II Disorde A?

41. ## english/phonlogy

I need help in a project. I'm teaching a group of german students and I have noticed they say things like 'dis' and 'lai' instead of 'this' and 'lie'. I should identify the phonology problem and explain it precisely what it is. Please, can someone give me

42. ## Physics

Beatrice throws the 1st calculator straight up from the edge of the roof of a building. She drops a 2nd calculator off the side of the building 2 seconds after she has thrown the first one. If the height of the building is 40m, what must the initial

43. ## english

I need help with my annotated bibliography thesis for Maya Angelou!!!!!!!? It is for a research paper. I has to include a bibliography of Maya Angelou and 3 of her works. I just need help with the thesis for the annotated bibliography.

44. ## Chemistry

Find the equilibrium constant for the following reaction: D-Glucose (aq) 2L (+) lactic acid (aq) ΔG ° for D-Glucose= -914.5kJ/mol ΔG ° for lactic acid = -538.8kJ/mol Would I just use the ΔG° =-RTlnK?

45. ## math

In an examination a candidate is given the four answers to four questions but is not told which answer applies to which question. He is asked to write down each of the four answers next to its appropriate question. b). show that there are 6 ways of getting

46. ## math

if two angles are supplementery and one is 48 degrees more than 3 times the other what is the measure of the smaller angle

47. ## Microeconomics (trying this question again)

Just want to see if i did good in my choices, thank you 11. If an economy has to sacrifice increasing amounts of good X for each unit of good Y produced, then its production possibilities curve is: (Points: 3) bowed out from the origin. I PICKED THIS ONE

48. ## Finance Class Help (very very urgent) need asap

K this is what I have so far. I am wondering if i did the CAPM right and if that is all i need for that part and then I need to know how to do the Constant Growth Model. When you do yours, assume the risk-free return as 6% Assume the expected market return

49. ## Biology

What molecules carry the energy derived from breaking down glucose? Where are these molecules made? Now, I'm thinking ATP and NADH but I'm not sure. Both these molecules are made outside the mitochondria in the cytoplasm.

50. ## Chemistry

A butane lighter had a mass of 24.643 grams before lighting and a mass of 24.592 grams after. How many mL of CO2 were produced? Assume STP.

51. ## Chemistry

5.2 grams of magnesium metal are place in 400.0 mL of 1.0 M hydrochloric acid. The balanced equation for the reaction is: Mg + 2HCl = MgCl2 + H2. How many moles of H2 gas were produced?

52. ## Physics

A block with mass m = 16.1 kg slides down an inclined plane of slope angle 24.3o with a constant velocity. It is then projected up the same plane with an initial speed 3.35 m/s. How far up the incline will the block move before coming to rest?

53. ## math

can you put the following nmbers in order form least to greatest? 17.11; 17.107; 17; 17.001

54. ## Math

The length of a rectangle is 10cm greater than the width. The area is 551cm^2. Find the length and width

55. ## PHYSICS

A charged disk of radius R that carries a surface charge density ó produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A

56. ## biology

What is the difference between genetic mutation and transgenic organisms?

57. ## PSY 210

paper summarizing each phase of the sexual response cycle for males, females, and commonalities for both males and females. Include a brief description of any sexual dysfunctions which can occur and common methods of treatment.

58. ## Chemistry

Take into account correction factors for phosphate buffers, predict the pH when 0.50ml of 1M HCl is added to 40mL of .10M buffer at expected pH 6 and pH 6.5. The buffer was made with Na2HPO4 and NaH2PO4. pKa is 7.2. When I did this before, I got a lower pH

59. ## Chemistry

Use the henderson-hasselbalch equation to predict the change in pH when 0.50ml of 1M HCl is added to 40mL of .10M buffer at pH 6 and pH 7.5. My two solutions are Na2HPO4 and NaH2PO4.pKa=7.2 Now I don't even know where to begin and how to use the equation.

60. ## Math (statistics)

In an examination a candidate is given the four answers to four questions but is not told which answer applies to which question. He is asked to write down each of the four answers next to its appropriate question. b). show that there are 6 ways of getting

61. ## organic chemistry

how to calculate the % oil of thyme in thyme ? We did an experiment titled : the extraction of Thymol in thyme oil and the prof wants us to calculate the % oil of thyme in thyme... how do I do that ? Thanks

62. ## PHysics

.) Bailey has taken up parkour. She attempts to clear the gap between two buildings. Bailey is on a roof which is 50m high and she is attempting the jump to a building that is 42m high. a.) If the two buildings were built touching (i.e. there is no gap)

63. ## Physics

.) Beth launches a rocket out in the courtyard. It stays in the air for 7.25 seconds before coming back down. a.) How high did it get? b.) With what velocity did it hit the ground upon returning to Earth? c.) What is its rate of acceleration as it slows

64. ## world history

how do i do a report that is due in 2 day that is on the 5 themes of geography and has to do with a current event i need help and i am having a break down how can i work like this HHHHHEEEEEELLLLLLLPPPPPPP ME

65. ## algebra

Evaluate and tabulate the values of y for the given values of x. Tabulate your answer in the form of ordered pairs (x, y). y = 2x, for x = -2, -1, 0, 1, 2

Need ideas on how getting an education is so important for children. please answer. Thx

67. ## Science

Can anyone find a site that gives all the general types o0f human cells/

68. ## Marketing 230

How does an organization establish an IMC plan? What are some of the different stages that company goes through when developing their IMC strategy?

69. ## math

Solve the following matrices (I don't know how to do brackets so I will just use commas to separate the numbers and put them in different lines) A= 0, -2, 3, 1 -3, 1, 0, 4 0, 5, -2, -1 B= 1, -4 -2, 1 3, 0 C= -1, 0, 2 0, 3, 4 0, 8, -1 E= 1 2 3 4 F= -2, 5 3,

70. ## science

what does the Krebs cycle need to proceed?

71. ## Question about Cash Flow Statement

I had to work on the income statement, the balance sheet and the statement of Owner's equity. Now I am on the statement of cash flow. The first thing I have to imput is Cash flows from Operating activities. Where I need to input is where it says Cash

72. ## Algebra help needed!

x ^2 + 6x + 9 (x ^2 - 3x) _____________ __________ x (x ^2 - 9) possible answers are 1 ___ x -3 x-3 x + 3 1 ____ x + 3 so far i got 3x(3X-4)/X^3-9....then facotor the denominator...after that cancel out the like terms.. Simplify I am using parenthesis to

74. ## algebra

solve the following system of equations, please show work 3x-2y+z=12 x+3y+z=-4 2x+2y-4z=6

75. ## math

if tammy can clean 1/2 the area in an hour by herself and melissa can clean 1/3 the area by herself in an hour then how long will it take them to clean the area together.

76. ## geometry

a parabola whose axis is parallel to the y axis passess through the points {1,1), (2.2) and (-1,5). Find the equation of the parabola

77. ## Chemistry

How many atoms are in 448 grams of carbon?

78. ## Physics

suppose you want to design a capacitor that uses mica as the dielectric material which has K = 7 and a dielectric strength of 150 MV/m. It is intended to store at least 1.- J of energy and be able to withstand a voltage up to 250 volts without electric

79. ## Physics

Consider the following model for the electrostatic stretching of DNA. A spring with spring constant kDNA = 250 pN/m is tethered to an immobile surface on one end and a charge of qDNA = −350e on the other. A uniform electric ﬁeld of magnitude |E| = 2.5

80. ## Math

a basketball tournament starts with 64 teams. after one loss the team is out. how many games does the team that wins the tournament have to play? 64/2=32 32/2=16 16/2=8 8/2=4 4/2=2 2/2=1 The answer is 6 games. How would I write the number sentence?

81. ## math

The ratio of one side of a polygon to the corresponding side of a similar polygon is 5:8 The perimeter of the second polygon is 96. What is the perimeter of the first polygon.

82. ## organic chemistry

how to calculate the % oil of thyme in thyme ? We did an experiment titled : the extraction of Thymol in thyme oil and the prof wants us to calculate the % oil of thyme in thyme... how do I do that ? Thanks

83. ## organic chemistry

how to calculate the % oil of thyme in thyme ? We did an experiment titled : the extraction of Thymol in thyme oil and the prof wants us to calculate the % oil of thyme in thyme... how do I do that ? Thanks

84. ## Math

x^2+bx+45, Find the value for b such that the trinomial is a square

85. ## arithmetic

WHAT IS THE ARITHMETIC MEAN OF 3, 5, 7, 9 AND 11

86. ## english

When a student has chosen to continue their education, they have also started towards being financially secure in life. has chosen is part tense participle Is "have also started" present perfect tense?

87. ## Com220

Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient outcome is one measure of quality. What role do health care workers play in determining quality care?

88. ## Physics

3000 Joules of energy in the form of heat are added to a copper block with a mass of 1 kg. What is the blocks temperature change?

89. ## reimbursement methodolgies

You're reviewing reimbursement for a Medicare surgical craniotomy case. The case falls into DRG 1, which has a relative weight of 3.0970 and a geometric mean LOS of 6.3. The hospital's current standard reimbursement rate is \$1500. Calculate the DRG

90. ## Computers

I have to generate OOP code for a system that tracks my CDs and DVDs. I have gotten through the defining of class and subclass and don't know what to do next. Do I need to create the records and then sort?

91. ## english grammar

What is grammatically wrong with the following sentence? "If someone feels they haven’t been treated respectfully, the odds are they’re right."

92. ## english grammar

What is grammatically wrong with this sentence? "A person needs to submit their homework on time."

93. ## Microecomonics (need to see if i got these right

1. Microeconomics deals with: (Points: 3) the working of the entire economy or large sectors of it. economic growth. individual units in the economy. THIS ONE I PICKED all of the above. 2. The basic concern of economics is: (Points: 3) to keep business

94. ## Science

In the Krebs Cycle, does the ATP store energy or release energy?

95. ## math models

Martin invested \$6,500 in a bank at a simple interest rate of 6.5%. How much interest would he receive after 4 years? Use I=PRT

96. ## Math

What is 5/6 of 1/2

97. ## Algebra

Simplify by reducing (4y^2z^3-8yz^2)/(yz^2-2z)

98. ## Algebra I

Tommy owes 3000 on his credit card. He is paying 14.5% interest compounded monthly. If it takes him 4 years to pay off the balance, what was the total amount that he ended up paying. Okay, so it gives me the equation a=p(1+r/n)^nt I did 3000(1+.145/12)^48

99. ## Physics

suppose you want to design a capacitor that uses mica as the dielectric material which has K = 7 and a dielectric strength of 150 MV/m. It is intended to store at least 1.- J of energy and be able to withstand a voltage up to 250 volts without electric