# Tiffany

Newest questions and responses by Tiffany
1. ## Math

Perform the indicated operation and simplify the result if possible. 20 yd. 2 ft. + 12 yd. 2 ft.

2. ## Math

By January 2014 the US population had grown to 317.3 million and the US Federal Debt was a reported \$17.3 trillion. Calculate the January 2014 Federal Debt per capita.

3. ## math

James bought a few hamsters. For each day after the first day of the week, the hamsters ate 20 grams of food more than the previous day. The hamsters grew fast, finishing 1260 grams of food in the first week. How much food did the hamster eat on the first

4. ## Physical Science

An 3000-kh car traveling at 70 m/s takes 8 m to stop under full braking. The same car under similar road conditions, traveling at 140 m/s, takes

5. ## Math

Alexis pours 3/4 cup of juice in 6 glasses. How many cups does Alexis have?

6. ## Math

There are 21 white cars in the parking lot. These cars represent 35% of all the cars in the parking lot. How many cars are in the parking lot?

7. ## math

Noah wants to display his 72 collectors flags.he is going to put 6 flags in each row.how many rows of flags will he have in his display?

8. ## Math

. Which is a solution of 2 8 x 1 5 \$ 11?

9. ## Math

Fred had \$140 dollars to spend on 7 books. After buying them he had 14 dollars. How much did he each book cost?

Exact interest method (365 days) and ordinary interest method (360 days) for \$450 loan at 12.9% interest rate 220 days.

11. ## Writing

Expository writing prompt: Describe a family celebration that has special meaning for you. Please give me some feedback. Every year my uncle celebrates Christmas at his house. Unlike the common Christmas party where people hand out presents to other

12. ## Writing

Expository writing prompt: Why is diversity in a workplace important? Please give me some feedback. It is not uncommon to hear employers emphasize the importance of diversity in a workplace. Diversity is important in a workplace because it creates an

13. ## Writing

Expository essay prompt: Describe the evolution of communication in the last 20 years since the advent of the Internet. Note: I wrote the essay in 15 minutes. Please give me some feedback and rate my essay from 1 (lowest to 5 ( highest). My essay: In

14. ## Writing

The essay below is an expository essay and was written in 15 minutes. Please give me some feedback on my essay ( a score of 1 being the lowest and a score of 5 being the highest). Prompt: Explore how obesity affects a nation's productivity and economy. My

15. ## Math

On a Science exam Rita answered 36 questions correctly and receive a score of 100% her friend answered 27 questions correctly what score did read her friend receive

16. ## Physics

A record player rotates a record at 45 revolutions per minute. When the record player is switched off, it makes 5 complete turns at a constant angular acceleration before coming to rest. What was the magnitude of the angular acceleration (in rads/s2) of

17. ## Algebra

A manuscript needs to be printed. One printer can do the job in 60 minutes and the other can do it in 40 minutes. How long would it take if both printers were used?

18. ## College Algebra

Let f(x) = . Find a formula for a function g whose graph is obtained from f by the given sequence of transformations. (1) shift left 3 units (2) vertical stretch by a factor of 2 (3) reflect across the x-axis

19. ## ENGLISH

WHICH DETAIL DO you not need in order to draw a conclusion

20. ## math

when rounded to the nearest ten I am 350 what am i

21. ## Chem

A sample of a substance (containing only C, H, and N) is burned in oxygen. 7.961 g of CO2, 1.164 g of H2O and 1.551 g of NO are the sole products of combustion. What is the empirical formula of the compound?

22. ## math

the product of a number and 7 is at least 28. write and solve the inequality.

23. ## Math

There are 3 boxes of tangerines. Each box has 93 tangerines. The tangerines will be divided equally among 9 classrooms. How many tangerines will each classroom get?

24. ## Math

List these numbers from least to greatest 3/4,5/8,6/7,6/11,7/10,8/9,

25. ## science

what is the specific gravity of a liter of water at 20 degrees celsius

26. ## finance

teresa buys 100 shares of XYZ sock on margin at \$20 per share. If the margin requirement is 45 percent, the interest rate is 10 percent, and she holds the security for 1 year, how much interest must she pay?

Can someone help me with this problem? if 80% of students Dr. the Bus driver. there are 410 students how many know the Bus driver. My answer is 310. is this correct ____ _80___ 410 100 32,800 divided by 80 = 410 410 - 100 =310

28. ## Ap chemistry

Calculate the concentrations of all ions present in the following solutions of strong electrolytes : 2.0 times 10-3 M AL2(SO4)3

29. ## math

A scuba diver dove from the surface of the ocean to an elevation of -79 9/10 feet at a rate of -18.8 feet per minute. After spending 12.75 minutes at that elevation, the diver ascended to an elevation of -28 9/10 feet. The total time for the dive so far

30. ## Physics

A cheetah can run approximately 100 km/hr and a gazelle at 80.0 km/hr. If both animals are running at full speed, with the gazelle 70.0 m ahead, how long before the cheetah catches its prey?

31. ## Algebra

Please help me find the slope of the curve for these problems. I don't know how to solve it. 1. Y = x^3 at P(-1,-1) 2. Y= x^4/2 at P (-1, 1/2) 3. Y = 8x^4 - 7x^2 + 5x +6 at P (-1,2)

32. ## English

Why did Raymond Carver make "Popular Mechanics" ending so ironically different from the Biblical tale "The Wisdom of Solomon"?

33. ## Government

Who creates executive branch departments? The president or Congress

34. ## Math

The wingspan of a Boeing 747-400 is 64.4 metres. a. If a scale model is built to the scale 1:20, what would the wingspan of the model be in centimetres? b. If the wingspan of another model is 53 cm, find the scale of the model in the form 1:x.

35. ## Social Studies

Why did the Pilgrims' government come about and why was its existence important. I know this has to do with the Mayflower Compact and was a formal method to establish systematic order among the Pilgrims but not sure why it came about and the importance.

36. ## Chemistry

"Aluminum metal melts at 658.5°C. What would be the final temperature if 28.0 grams of solid aluminum at this temperature were placed into 520 grams of liquid aluminum at 1000.0°C? The heat of fusion for aluminum is 396 J/g, and the specific heat of

37. ## Algebra

Simplify 4√490k^2

38. ## Algebra

Evaluate the function. h(x) = x^3 + 4x^2 ; Find h(x-3)

39. ## Brief Calculus

The demand function for a certain brand of CD is given by p = −0.01x2 − 0.2x + 12 where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. The supply function is given by p = 0.01x^2 + 0.5x + 3

40. ## Brief Calculus

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p = −0.01x2 − 0.3x

41. ## English

Underline infinitive phrase and how is it used A few prospectors brave enough to explore the frozen interior found gold in the summer of 1896. To explore the frozen interior adj

5p-7-2p=-3

43. ## Chemistry

For a particular isomer of C8H18, the following reaction produces 5104.1 kJ of heat per mole of C8H18(g) consumed, under standard conditions. (deltaH_rnx = -5104.1kJ) What is the standard enthalpy of formation of this isomer of C8H18(g)?

44. ## Math

Four people want to cross a bridge. They all begin on the same side. It’s night time and they only have one flash light with them. At most two people can cross the bridge at the same time, and any party who crosses, either one or two people must have a

45. ## Math

Tommy has 5 jars. Each jar is 2/3 filled with marbles. How many full jars of marbles does tommy have ?

46. ## math

if an invoice is dated april 25 and has credit terms of 3/15 ,n/45 , what is the last date on which the net amount of the invoice can be paid without incurring an penalty

47. ## Math

Find the circumference of 15in and round your answer to the nearest tenth

48. ## college algebra

The​ half-life of​ carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 73​% of the​ carbon-14 expected in living​ matter, when did the tree​ die?

49. ## Chemistry

Find the volume of 0.250M sulfuric acid necessary to react completely with 79.3g sodium hydroxide

50. ## English

Please check my answer There was one student still taking the exam when the bell rang. Student is the subject and exam is the simple subject.

51. ## Chemistry

Calculate the mass of Fe(OH)3 s) produced by mixing 50.0 mL of 0.153 M KOH (aq) and 25.0 mL of 0.255 M Fe(NO3)3 (aq), and the number of moles of the excess reactant remaining in solution. I got 0.00383 mol Fe(NO3)3 remaining. I don't know how to obtain the

52. ## Chemistry

Identify the excess reactant (HCl or NaOH) and its molar concentration when 1.55 g of NaOH is stirred into 150.0 mL of 0.250 M HCl.

53. ## Chemistry

Calculate the mass of Fe(OH)3 s) produced by mixing 50.0 mL of 0.153 M KOH (aq) and 25.0 mL of 0.255 M Fe(NO3)3 (aq), and the number of moles of the excess reactant remaining in solution. I got 0.242 g Fe(OH)3 and 3.83 mmol Fe3+ remaining.

54. ## phsyics

The block shown in figure below lies on a smooth plane tilted at an angle è = 21.5° to the horizontal. Determine the acceleration of the block as it slides down the plane. Ignore friction.

55. ## Chemistry

How do you write the complete ionic equation and net ionic equation for ammonium chloride and copper (II) sulfate in water?

56. ## Chemistry

How do you write the complete ionic equation and net ionic equation for ammonium chloride and copper (II) sulfate in water?

57. ## Chemistry

I still don't get this problem! Toxic chemicals in drinking water usually are reported and a safety level specified in units of parts per million (ppm) by mass. What is the molar concentration of arsenic in a water sample that has 1ppm arsenic (As)? My

Write 16/40 in simplest form explain your work???

59. ## Chemistry

how many grams of baking soda is needed to neutralize 500ml of hydrochloric acid ?

60. ## Calculus

What is the average value of f(x) on [0,4] if the area between the graph of f (x) and the x-axis is equal to 12? I used the average value formula and got 12. But the answer key says 3. My work: M= 1/4 [12x] interval: [0,4] 48/4=12

61. ## Chemistry -Dr.Bob

Toxic chemicals in drinking water usually are reported and a safety level specified in units of parts per million (ppm) by mass. What is the molar concentration of arsenic in a water sample that has 1ppm arsenic (As)? DrBob222 1 ppm = 1 mg/L and although

62. ## Chemistry

Toxic chemicals in drinking water usually are reported and a safety level specified in units of parts per million (ppm) by mass. What is the molar concentration of arsenic in a water sample that has 1ppm arsenic (As)?

63. ## Algebra

Tameen keeps quarters, nickels, and dimes in his change jar. He has three more quarters than dimes and five fewer nickels than dimes. If there are 52 coins in the change jar, how many dimes are in the jar?

64. ## Calculus-Steve

Find the area of the region between the graphs of f(x)=3x+8 and g(x)=x^2 + 2x+2 over [0,2]. I got 34/3. Calculus - Steve ∫[0,2] (x^2+2x+2) dx = 1/3 x^3 + x^2 + 2x [0,2] = 8/3 + 4 + 4 = 32/3 Why are you taking the antiderivative of x^2 +2x+2 when we are

65. ## Algebra

Ticket sale for a music concert was \$2,160. Three times as many tickets were sold for the Saturday night concert as were sold for the Sunday afternoon concert. Two times as many tickets were sold for the Friday night concert as were sold for the Sunday

66. ## Algebra

The perimeter of MNO is equal to the perimeter of square ABCD. If the lengths of the sides of the triangle are represented by 4x + 4, 5x - 3, and 17, and one side of the square is represented by 3x, find the length of a side of the square.

67. ## Calculus

Find the area of the region between the graphs of f(x)=3x+8 and g(x)=x^2 + 2x+2 over [0,2]. I got 34/3.

68. ## Physics

A married couple is driving on a dark road at night at the rate of 98.0 m/s until they see a clown 50m in front of them and slam the brakes to slow the car down to 10.0m/s and still manage to hit the clown. How much time would the clown have had to move

69. ## math

Triangle ABC is congruent to triangle xyz.write congruence statements comparing the corresponding parts.then determine which transformations map ABC onto xyz

70. ## Chem

A pure silver ring contains 2.60X10^22 silver atoms. How many moles of silver atoms it contain?

71. ## Math

At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel 5 minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter

72. ## Computer Science

A public transport company provides three types of transports to its passengers to travel from city A to city B of different state. The three types of transports are train, bus and taxi. Each transport has different charges and maximum seats limit. The

73. ## algebra

A soccer field has an area of 312 square yards. Its length is 2 yards longer than twice its width. Find the width of the soccer field.

74. ## math

how to cut a 10 ft board into 9 smaller boards

75. ## Statistics

The estimate of the population proportion is to be within plus or minus 0.06%, with a 99% level of confidence. The best estimate of the population proportion is 0.22. How large a sample is required? Round answer to the next whole number.

76. ## chemistry

What is the volume occupied by 0.738g of xenon gas at STP?

77. ## geometry

A small airplane takes off from point A and continues to climb upward in a straight line, as shown in the diagram. What is the plane’s distance from point A when it reaches point C

78. ## Math

a 6,000 seat theater has tickets for sale at \$26 and \$40 . How many tickets must be sold at each price for a sell out performance to generate a revenue of \$190500?

79. ## Chemistry

1. Iron oxide and carbon monoxide react according to the following equation . Identify which reactant is limiting and which is excess if 43.5 grams of Fe2O3 reacts with 43.5 grams of CO Fe2O3 + 3CO2 --> 3CO2 + 2Fe 2. Calculate the percent yield of Carbon

80. ## Chemistry

What is the empirical formula for a compound that is 1.67g Ce and 4.54g I?

81. ## Math

Hello! I need help with this question. I know that I'm using the Law of Sines, but I'm confused on how to solve. I have to also round my answers to the nearest tenth for degrees and to the nearest hundredth for sides. Thanks! Given: A = 60 degrees a = 9 c

82. ## Math

The function f(x) = x^2 -2x + x^1/2 is: A. A polynomial because it is continuous. B. A polynomial because it is of the form axn. C. Not a polynomial because you are subtracting 2x. D. Not a polynomial because you can’t have any fractional exponents. Is

83. ## Physics 202

A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 10.0g and electrical resistance 0.100Ω

84. ## Physics

Sound of a certain wavelength is coming from within a room and passing through a rectangular door (a "slit"). If the width of the doorway is twice the wavelength of the sound, what is the diffraction angle è of the sound leaving the doorway? Please show

85. ## Math

if 12 ft of ribbon is cut into pieces that are 2 1/4 ft long,how much ribbon is left over?

86. ## Math

If w is some number between 3 and 10, which of the following could be the average of the numbers 4,5,6,7,9 and w? (A)4.6 (B)5.1 (C)6.3 (D)7.9 (E)8.2

87. ## Physics

The earth has about 80 times the mass of the earth’s moon. The gravitational force exerted on the moon by the earth has what relation to the gravitational force exerted on the earth by the moon? 1. the same as 2. zero; the earth exerts a force on the

88. ## math

A piece of wire 34 cm long is cut into two parts. One part is to twice as long as other. how long is each part? solution pls..

89. ## math

May takes 12 hours to type a report. Her friend helps her and together they finish the job in 4 hours. How long would it take her friend had she worked alone? Representation: Equation: Solution: Conclusion:

90. ## computers

Wendy calls the help desk and reports that she is unable to access her files that are stored on the server. The network is a Windows Domain with Active Directory. Wendy is logged on locally to her workstation that runs Windows 8. You remote into her

91. ## english 10th

How does an open question differ from a closed question?

92. ## intro to computers

You call the help desk to report a problem you are having on your computer. The technician asks you what operating system you are running. You know it is Windows 7 but you forget which version. How can you find out?

93. ## Math

Mr. Sugar baked a sheet cake in the shape of a rectangular prism with the deminisions of 20in by 12in by 3in high he is going to spread icing all over the cake except for the bottom what is the total surface area?

94. ## soc120

Which of the following is a claim that utilitarian might use to argue that prayer should not be allowed in school? (Points : 1)

95. ## chemistry - DrBob?

Hi! Can you tell me if I chose the right options for my chemistry homework? My answers are at the bottom. 1. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent

96. ## Chemistry

Hi! Can you tell me if I chose the right options for my chemistry homework? My answers are at the bottom. 1. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent

97. ## math

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

98. ## Chemistry

1. The temperature of two substances with the same mass increases by 20 degrees Celsius. Which absorbs the most energy, the substance with the higher or lower specific heat? Explain 2. The human body is approximately 60% water. Explain how this high