# lizzie

Most popular questions and responses by lizzie
1. ## Math, are they all right?

1. A student raises her grade average from a 75 to a 90. What was the percent of increase in the student’s grade average? Round your answer to the nearest tenth of a percent, if necessary. A: 20% B: 16.7% C: 8.3% D: 15% *** 2. Beanbag chairs that

2. ## Math - is this correct?

1. Estimate a 15% tip on a taxi ride that costs \$23.25. I will first round the cost to the nearest dollar. \$23.25 ≈ \$23.00 I will now use mental math to find 10% of the cost. \$23.00 x 0.1= 2.3 5% is 1/2 of 10%, so it would be \$1.15. Finally, I will add

3. ## Math - Another question to check, sorry... =/

7. 72 is what percent of 480? Write and solve an equation to solve the problem. Step 1. First, I will write out the equation. part = percent x whole Step 2. Now, fill in the parts… 72 = p x 480 Step 3. I will simply divide 72 by 480, which will be 0.15.

4. ## Math

how many solutions does the equation sin(5x)=1/2 have on the interval [0,2pi]?

5. ## News for Ms. Sue

1. A student raises her grade average from a 75 to a 90. What was the percent of increase in the student’s grade average? Round your answer to the nearest tenth of a percent, if necessary. A: 20% B: 16.7% C: 8.3% D: 15% Hi Ms. Sue, it was 20%. Thank you

6. ## ONE math question! Check please, thank you!

6) 108 is 36% of what number? Write and solve a proportion to solve the problem. Step 1. First, I will write the proportion to find the missing value, which I will replace it with n. 108/n = 36/100 Step 2. Next, I will write the cross products. So, 36n =

7. ## science ()

Why do the cheeky girls look slightly different?

8. ## Chemistry

Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Mg2 ] = 0.763 M and [Sn2 ] = 0.0180 M Mg(s)+Sn^2+(aq)-->Mg^(2+)+Sn(s) I keep getting 2.57 but it says I'm wrong. Please help me!

9. ## math

About 25% of those called will find an excuse to avoid jury duty. If 11 people are called for jury duty, what is the probability that all 11 will be available to serve on the jury? (Round your answer to three decimal places.)

10. ## MATH

prove tan (theta/2)= (sin(theta))/(1+cos(theta))for theta in quadrant 1 by providing the calculation along with the reason. I appreciate the help.

11. ## Chemistry

Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Mg2 ] = 0.763 M and [Sn2 ] = 0.0180 M Mg(s)+Sn^2+(aq)-->Mg^(2+)+Sn(s) I keep getting 2.57 but it says I'm wrong. Please help me!

12. ## Math

In a financial deal, you are promised \$800 the first day and each day after that you will receive 45% of the previous day's amount. When one day's amount drops below \$1, you stop getting paid from that day on. What day is the first day you would receive no

13. ## math

You have a 20-foot ladder that you are using as you paint your house. You place the ladder so that it forms an angle of 30 at the point of contact between the ladder and the ground. How high will the top of the ladder be above the ground? Please explain.

14. ## chemistry

How many moles of O are present in 14.8 moles of Fe(NO3)3? Can you show work so I can understaned how to do.

5. An Aspirin manufacturer fills bottles by weight rather than by count. Since each bottle should contain 100 tablets, the average weight per tablet should be 5 grains. Each of 100 tablets taken from a large lot is weighed, resulting in a sample average

16. ## Physics

Some hydrogen gas is enclosed within a chamber being held at 200C with a volume of 0.025m^3. The chamber is fitted with a movable piston. Initially, the pressure in the gas is 1.50*10^6 Pa (14.8 atm). The piston is slowly extracted until the pressure in

17. ## algebra

a spinner is split into three equal sections numbered one through three. What is the probability of spinning two threes in a row?

18. ## Physics Help

0.30 mol of argon gas is admitted to an evacuated 50cm^3 container at 20 C. The gas then undergoes an isobaric heating to a temperature of 340C. What is the set up for this? I can plug in the values

I'm reading macbeth and i don't really understand some of the symbolisim. One question i have is : in Act 5 scene 3, Macbeth changes his mind about puttin on his armor. What does this reveal about his mental state?

20. ## English

I have to write a speech on a pet peeve. I chose aggressive driving. Here is my introduction for the outline. Think? Aggressive Driving Introduction •How many of you have turned on the news or opened a newspaper to find that another human being was

21. ## chemistry

2.241g sample of nickel reacts w oxygen to form 2.85g of the metal oxide. Calculate the empirical formula of the oxide?

22. ## Math

1. Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than \$800.00. a. \$2,000.00 at 6% for 7 years *** b. \$4,500.00 at 3% for 6 years *** c. \$1,400.00 at 6% for 9 years d. \$5,000,00 at 7% for 3 years *** e.

23. ## History

Which of the following was NOT a result of the industrial revolution 1. A decrese in child labor 2. Pollution 3. The use of clocks 4. A decrease in the middle class The answer according the book is #1 except I am confused all the child labor laws came in.

24. ## Math

A pole vaulter cleared the bar at 490 cm. Convert 490 cm to meters using a unit multiplier

25. ## English

I am writing an 5 paragraph essay on being stranded on an island. I chose a narrative. How does this look so far? Thesis-It was at this moment that Willie realized the reason he had been sent to this whole new environment and now had to learn a new way of

26. ## chemistry

Classify the following properties of ozones as physical or chemical: 1.bluish color 2.pungent odor 3.reactive towards oxygen 4.decomposes to oxygen on exposure to ultraviolet light 5.it is a gas Is this correct? 1.chemical 2.physical 3.chemical 4.chemical

27. ## Chemistry

convert 175f to c convert 325f to k covnert 575 cal to J canvert 23 Cal to J

28. ## Chemistry

Popcorn kernels pop independently (i.e. unimolecularly). For one brand at constant temperature, 15 kernels pop in 10 seconds when 200 kernels are present. After 35 kernels have popped, how many kernels will pop in 10 seconds? (Your answer may include

29. ## Science

There is an endangered speicies of wolves. They killed farmer's livestock for food so the farmers killed them. They were found in Yellowstone National Park in 1995, and there are no fences around Yellowstone. Sometimes the wolves would wander out and kill

30. ## science

Question: Why are "apparently" small changes in pH so important in Biology? Answer: pH levels are each a 10-fold change so a change by 2 is actually a change by 1000. pH determines certain characteristics in organisms that allow them to live in certain

Barney Casey borrowed \$40,000 from his parents for 2 years. He paid them a total of \$45,000 at the end of the 2-year term of the simple interest loan. What rate of interest did he pay his parents?

32. ## English

Here is my outline for my speech. How does it look? I know I need a better conclusion, I am just not sure exactly yet. Aggressive Driving Introduction • How many of you have turned on the news or opened a newspaper to find that another human being was

33. ## Math

A rectangular flower garden, 7 m by 6 m, is surrounded by a grass strip of uniform width. If the total area of the garden and the grass strip is 90 m^2, what is the width of the strip? To solve this, I used the formula 90=(6+2x)(7+2x) where is is the width

34. ## Math

Alicia's family decked to vist her grandmother, who lives 200 miles away. If they drive an average speed of 60 miles or hour, about how long will it take them to arrive at her grandmother's place.

35. ## English

I need help with starting my essay. These are the organization of my essay. I am not sure what to put for paragraph #2. *Broad subject-My name *Limited Topic for thesis statement-Learning to cope with my height *Main Idea about this topic- Advantages of

36. ## History

Jiskha I am 8 years old and I need help on this history qwestion. I have to get good grade on this or my mom will get really mad at me. Please help! Write a short paragraph that traces the rise of Japan from an isolated society to a major industrial and

37. ## Physics

Explain how rubbin fur on an ebonite rod produces a charge on the rod. What chrage is produced in the rod? I understand the question, but how am I to know if it will have a positive or negative charge? Also, I don't quite understand how you charge

38. ## Physics

Standing waves are produced in a string that is 4.0 m long. If the waves are travelling at 125 cm/s and the distance between the first and the fifth nodes is 80.0 cm, find the frequency of the waves.

4. A study of the ability of individuals to walk in a straight line (“Can We Really Walk Straight?”, Amer. J. of Physical Anthro., 1992:19-27) reported the accompanying data on cadence (strides per second) for a sample of 20 randomly selected

40. ## Physics

A gas with initial conditions p_i, V_i, and T_i expands isothermally until V_f=6 V_i. What are (a) T_f and (b) p_f? 1)T_f/T_i= 2)p_f/p_i= I don't know how to solve this

2. Each of the following is a large-sample confidence interval for μ, the mean resonance frequency (HZ) for all tennis rackets of a certain type. (114.4, 115.6), (114.1, 115.9) a. What is the value of the sample mean resonance frequency? b. Both intervals

42. ## Algebra

Do I have the right answer? A store owner bought a machine that laminates cards. the machine cost \$1000. Each laminated item costs the owner \$.50, but he charges the customers \$4.00 per item. how many cards must be laminated and sold before the owner makes

43. ## Algebra

1.What is the shape of the graph of any linear function? Answer-line 2. Solve for x in |5x -2| >5 Answer- 2/3 < x

44. ## Algebra

1. What is the equation for the line that passes through the point (-5,2) and has a slope of 0? Answer-2 2. What is the slope of the line that passes through the points (-2, 4, 15) and (1, 1.24)? Answer- -2.91 3. Write a funciton rule for the table shown x

45. ## Algebra

4. Compare the quantity in Column A with the quantity in Column B. Column A The solution of 2(x-3) = 6x Column B The solution of 3x + 2 + 5x + 6

46. ## Science-DrBob222-Help

I’m sorry, that’s exactly the way the question is written! I was confused by it myself! I think it means: Suppose you are at a concert and a singer’s voice is radio broadcast all around the world before reaching the radio you hold to your ear. This

47. ## math

The official ratio of width to length for the U.S. flag is 10 to 19. If a flag is 38 inches wide, how long should it be?

48. ## math

Michael has 18 decorative square tiles to make a design on a kitchen backsplash. He wants to arrange them in a rectangular shape with the least perimeter possible. How many tiles will be in each row?

49. ## Algebra

1. Compare the quantity in Column A with the quantity in Column B. Column A slope of y = 2x +2 Column B slope of 2y = 3x +9 Answer-Column A is greater 2. |x-4| < 3 Answer- 1< x < 7 3. Solve for x in 3x + 4 =28 Answer-8 4. An algebraic ___________ has an

50. ## Algebra

2. Find the value of x^3 +2x^2 -3 when x =3 Answer-42 12. What type of correlation would you expect between the number of minutes a candle burns and the height of the candle? a. no correlation b. positive correlation c. negative correlation d. equal

51. ## English

This is my first paragraph of my essay. Help! Imagine being given a name that every kid would make fun of and everyone always questioning “Why would your parents do such a thing?” The man knew the pros and cons of having such a very unusual name,

52. ## geometry

how do i find the degree of a right angle, split into two different angles. ex. if m

3. Determine the t-critical value for a two-sided confidence interval in each of the following situations. a. Confidence level = 95%, df = 15 b. Confidence level = 99%, n = 5. c. Confidence level = 95%, n = 15 d. Significance level = 0.01, df = 37

54. ## math

A checkerboard is 10 inches long on each side.What is the length of the diagonal from one corner to another? I know, I will need to use the equation... A2+B2=C2....but I don't know where to put the numbers. Thank you for the help!

55. ## Algebra

I am trying to find out if my answer's are correct. Can someone please verify. What is the equation for the line that passes through the (-2,2) and has a slope of 5? Answer- Y=5x + 2 Y=5x +12 Y=5x -2 None of these ¨C I believe this is the answer Find the

56. ## grammar

1.Christina and Christopher worked together and completed a project about astronomy. simple subject and compound predicate? 2.Jennifer and her brother were not allowed to go to Great Adventure with the Jones family. Compound subject and compound predicate

57. ## Algebra

I don't know how this answer was achieved. Can you take me step by step? A=1500(1+.043/4)^(4(6)) = \$1938.84

58. ## algebra 2

I don't know how to do this. Which describes the number and type of roots of the equation x^3 - 4x^2 + 50x + 7 = 0? a. 1 positive, 2 negative b. 2 positive, 1 negative c. 3 negative d. 3 positive.

59. ## English

I have made the changes. Is this better? Thesis- The sloppily dressed, wealthy businessman, who now has the state-of-the-art mansion, but because of his penny pinching ways, no one would ever know it. Paragraph #2 Granted Oliver Toliver wasn’t a very

60. ## english

This is the 1st paragraph to my essay: Social awkwardness Ever since I can remember people have always commented on my height, this made me very uncomfortable and awkward about it around my peers. I recall a time when my mother got into an argument with a

61. ## american literature

do you know anything about the crucible. i need help with this proect asap.

62. ## math

can you please work this out for me??... your bedroom is 4m (400 cm) long and 3m (300 cm) wide. If you draw a rectangular plan 2cm by 1.5 cm, what is the scale of your drawing?

63. ## Science

I was so confused by this question!! Any advice?? Suppose at a concert a singer’s voice is a radio broadcast all the wave around the world before reaching the radio you hold to your ear. This takes 1/8 seconds. If you’re close, you her her voice in the

64. ## chemistry

how many moles of CO2 can be produced from 15 moles of Fe2O3?

65. ## chemistry

Classify the following properties of ozones as physical or chemical: 1.bluish color 2.pungent odor 3.reactive towards oxygen 4.decomposes to oxygen on exposure to ultraviolet light 5.it is a gas

66. ## chemistry

325*f to kelvin

67. ## Maths/Algebra

Samantha went shopping and spent half her money on a T-shirt and a third of her money on a scarf. She returned with \$15. How much money did she have to begin with? My working out: s = money to begin with s - 1/2 s - 1/3 = 15

68. ## geometry

In the figure below, the length of CB is 64 units and the length of BG is 137 units. What is the length of EA?

69. ## English

Outline of my speech on Aggressive Driving. Is this correct? Topic- Aggressive Driving Introduction •Road Rage oInjuries and deaths oIncreasing road rage oGrowing epidemic •Aggressive Driving oDefinition oTypes Verbal Road Rage Quiet Road Rage

70. ## Algebra

4x +7 =18, then what is the value of 12x +21? I don't know the value of x.

71. ## biology

What parts of the solid earth, atmosphere and hydrophere are not included in the biosphere?

72. ## science/chemistry

I have to write a persuasive paragraph on the following question: What should be the job of a scientist?Pick one to argue: a) Create more synthetic substances. Fore example: synthetic elements, genetically modified food b) Study substances that naturally

73. ## science

I have to write a persuasive paragraph on the following question: What should be the job of a scientist?Pick one to argue: a) Create more synthetic substances. Fore example: synthetic elements, genetically modified food b) Study substances that naturally

74. ## Math

10% requires you to move the decimal place over one place. So, it would be 2.32. Then, 5% is 1/2 of 10% so it would be 1.16. Add them together and its roughly around 3.50. Is this correct?

1. sin(tan^-1(4/3))=4/5 2. find the angle whose tangent equals 0. tan^-1(cos(pi/2))=0

76. ## math

ms. fuller has 2 and 2/6 pies left over from her party. write the number of pies left over as a fraction greater than 1.

77. ## algebra

how do you graph c =40t+ 250

78. ## Algebra

Solve the following system using substitution: y = x + 2 y = 3x I don't understand this question.

79. ## Algebra

1.What is the domain of this relation? domain range -3 3 -2 -6 -1 0,15 0 -6 1 -1 Answer- -3,-2,-1,0,1 2. Compare the quantity in Column A with the quantity in Column B Column A slope of y =3 Column B slope of x =3 Answer- The two quantities are equal 3.

80. ## English

I need to write notecards for the speech. How do I going about doing this?

81. ## engllish

Even after achieving such wealth, Oliver has always remained true to himself and never allowed his beliefs to waver. Correct?

82. ## English

Broad Subject-Phonebook Character Limited Topic for Thesis Statement- Oliver Tolivr Main Idea- Wealthy Buisness Man Three Step Format #2 Appearance-Sloppily dressed #3 Surroundings-State of the art mansion #4 Actions-Penny pinching ways Thesis Statement:

83. ## Grammar

1. The rain poured into the river and flooded the nearby community. -simple sentence 2. Some indefinite pronouns are always plural and require plural verbs. select these pronouns. A. both, many, several B. everyone, everybody, any, several C. somebody,

84. ## math

people are entering a room with five doors and come out, how many ways are there if they can’t go out from the door they went in.

85. ## math

Five books are put in three boxes, how many ways are there if: a) The books are different and the boxes are different? b) The books are the same and the boxes are different? c) The books are different and the boxes are the same? d) The books are the same

86. ## Science

I need to check my answers!! Which of these is not in the family a. sound b. light c. infrared radiation (answer) d. radio waves When an electric charge is shaken to and fro in quick succession, the vibrating charge emits a. infrasonic sound b. Ultrasonic

87. ## geometry

there is a problem on my paper in which there is a right angle forming a triangle. the right angle is to the right end of the triangle. at the vertex at the end of the left side, those two lines go on to make two more angles. how do i figure out the degree

88. ## Ms Sue and or Ms Wright

He hit the ball well, but he ran toward third base." Could the sentence read He hit the ball well and ran toward third base." Why yes or no Thank you so much.

1. Suppose the estimate of a proportion of a normal population is to be within 0.05 using the 95% confidence level. How large a sample is required if: a. It is known from previous studies that p = 0.3? b. There is no prior knowledge of p?

90. ## physics

A car is coasting backwards downhill at a speed of 2.6 m/s when the driver gets the engine started. After 2.5 s, the car is moving uphill at 4.6 m/s. Assuming that the uphill is the positive direction, what is the car's average acceleration?

91. ## Algebra

A machine has a work output of 28ax^5 joules and a work input of 7a^2x^6 joules. What is the efficiency of the machine?

92. ## PHI103 Informal Logic

Assume Mary is forced to let her children go hungry or steal some food from a local grocery store. Which should she do? Construct an argument that supports Mary's decision to steal the food or an argument that shows why Mary should not steal the food.

93. ## Algebra

Please explain One factor of x3 + 5x2 + 2x - 8 is (x + 4). Find the remaining factors.

94. ## Algebra

Can you tell me if these are correct? I am not sure that I understand this. 1. Which is the solution for the determinant? |10 0)| 5 -7 Answer- -70? 2.Which is the solution for the determinant? |1 7)| 0 -3 Answer- -3

95. ## English

Please let me know what you think? I have the 1st three paragraph Imagine being ripped from the bed by several strangers, blindfolded, handcuffed and thrown into the back of a car, sometime later a plane, and then a small boat. Willie awakes very druggy,

96. ## Algebra

1. What is the mapping of? Domain Range -3 3 -2 -6 -1 0, 15 0 -6 1 -1 I needed to represent these with arrows, but I can't. a. relation b. linear function c. all of these d. none of these Answer- none of these 2. Re-write 2x - 3y < 6 in slope intercept

97. ## Algebra

1. Given g(x) = x^2 -x, find g (2/3). Answer- -2/9 2. The scatterplot of this data would suggest a Study Time (Min) 14 20 23 25 28 32 Test Score 60 67 68 70 72 73 Answer- positive correlation 3. The scatterplot of this data would suggest a # of cookies

98. ## Algebra

2. Find the value of x^3 + 2x^2 - 3 when x=3 Answer-42 4. Compare the quantity in Column A with the quantity in Column B. Column A Column B The solution of The solution of 2(x-3) = 6x 3x + 2 + 5x + 6

99. ## Algebra

Find the value of x^3+¡¼2x¡½^2-3 when x =3. I don't know how to type x to the 3rd power it keeps putting a little triangle there. How do I do this? When I type it here or in word it does the same thing. Help!