# lizzie

Newest questions and responses by lizzie
1. ## 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

2. ## 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.

3. ## 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

4. ## algebra

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

5. ## HELP GRAMMAR

if you say twenty days to respond and a few paragraphs later say the petition must be filed within 90 days is that correct or must both match

6. ## 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.

7. ## ms sue - thanks

is this correct on string of nouns you need and before the last one. On adjectives you do not? These sentences below are incorrect: incorrect Helen is bright, friendly, and confident. ( take out and) We have many dogs, cats, lions. (put in and)

8. ## Ms Sue English

I thought my grammar was excellent BUT now not so sure:( why is and necessary in some sentences and not others? Boys, girls, dogs, and cats .... vs Bright, friendly, compassionate ....

9. ## English SAT

Hi - i am doing english SAT practice and have a few grammar questions. 1. '60s flower child Book says an apostrophe goes before 60. Can you explain why? 2. Helen is a bright, friendly, confident girl. Book says this is correct Why is the word "and" not

10. ## 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?

11. ## 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

12. ## 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

13. ## 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.

14. ## 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 =

15. ## 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.

16. ## 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

17. ## 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?

18. ## 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?

19. ## Math

Jai has 35 pieces of fruit. They are all apples and pears. He has 15 more apples than pears. How many pears does he have?

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

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

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

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

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?

25. ## Finance

A speculator sells a stock short for \$70 a share. The company pays a \$2 annual cash dividend. After a year has passed, the seller covers the short position at \$60. What is the percentage return on the position (excluding the impact of any interest expense

26. ## 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!

27. ## 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.)

28. ## Math

If a car is driven at a speed of 78 mph and they travel for 3.5 hours , what is the distance traveled?

29. ## 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!

30. ## 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!

31. ## Math

What is the common multiple (LCM) of 5, 6,and 2?

32. ## Math

An integer greater than -10 and less than -8

33. ## 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.

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

35. ## 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.

36. ## Math

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

37. ## math

Write a situation that can be represented by 3.25d

38. ## 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?

3x+13=5(x-1)

40. ## artist

who is juten is he a artist

41. ## math

what is 5x + 2>3x + 10

42. ## maths

A particle of mass m rests on a rough inclined surface at an angle Pi/6 to the horizontal. When a force of magnitude P is applied parallel to the surface pointing up the slope, the particle is on the point of slipping down the slope, whereas when a force

43. ## 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.

44. ## 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?

45. ## 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?

46. ## Math

A square painting is surrounded by a 3-cm-wide frame. If the total area of the painting plus the frame is 81 cm2, find the dimensions of the painting.

47. ## 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

48. ## algebra

how do you graph c =40t+ 250

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?

50. ## 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

51. ## 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?

52. ## PHI103 Informal Logic

If P, then Q, where P and Q are both sentences. P is the antecedent of the conditional—the ‘if’ part—and Q is the consequent—the ‘then’ part. The corresponding conditional of an argument contains the conjunction of the premises in the

53. ## 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.

54. ## math

How do I simplify the following expression using the distributive property? 7z-4+6(2z-9)

55. ## 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

56. ## Algebra

Help! sin B = ( 5 square root 2)/ (5 square root 3), find the value of csc B

57. ## Algebra

log25 8 less than or greater than x How do I write this in a different form? fraction

58. ## Algebra

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

59. ## 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

60. ## Algebra

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

61. ## 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

62. ## 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

63. ## Algebra 2

Help List all the possible rational zeros of p(x) = 2x^3 - 3^2 + 4x - 6.

64. ## 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.

65. ## Algebra-Matrix

How would I do these Matrices? 1. |1/2 14 10 -8| 2, Let matrix A = [8 -2 4 7 ] Let matrix B = 2A, Find b_22

66. ## Algebra-Matrix

What element is a location a_23 of matrix A, if |4 -3 4| 5 0 -6 7 2 -8 I have the answer at -6 Is this correct?

67. ## 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

68. ## English

Here is my essay. Can you please check? I awake very groggy, to find myself on this very remote island with not a person in sight. Attached to my shirt is a letter written by my English teacher Ms. Barlett stating that I am heading down the wrong path to a

69. ## 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

70. ## Engllish

Here it is. I still haven't come up with a wow ending sentence. Do I need to change my thesis statement in the 1st paragraph? I did change it in the last. I awake very groggy, to find myself on this very remote island with not a person in sight. Attached

71. ## English

Is this better? Paragraph 1&2 Can my thesis statement stay the same even though we changed it slightly? I awake very groggy, to find myself on this very remote island with not a person in sight. Attached to my shirt is a letter written by my English

72. ## 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,

73. ## 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

74. ## Algebra

1. The input –output table is accurate. X Y+ 7 -5x -1 7-5(-1) =12 0 7-5(0) =7 1 7-5(1) =2 2 7-5(2) = -3 3 7-5(3) = -8 Answer- True

75. ## 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.

76. ## 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

77. ## 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

78. ## 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

79. ## English

Is this a better thesis statement? The reason Willie was taken out of such a bad environment was to protect him from the mob, but it also ended up teaching him a new way of survival.

80. ## 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

81. ## 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

82. ## 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

83. ## English

I have to write a 5 paragraph essay on being sent to a desert island. Here is my thesis statement: Whoever would have guessed that the reason Willie was taken out of such a bad environment woud end up teaching him a new way of survival? How does this

84. ## 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

85. ## 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

86. ## 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!

87. ## 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

88. ## Algebra

Are these answer"s correct? 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 value of x^3+¡¼2x¡½^2-3 when x =3. Answer- 42

89. ## English

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

90. ## 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

91. ## 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

92. ## 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

93. ## EnglishP

I am writing a speech on aggressive driving. Here is my thesis statement: Proving that aggressive driving is a growing epidemic across our country is easy, but convincing drivers that there are better ways to handle “Road Rage” is a different story.

94. ## English

I changed it from moreover to and. Correct? They told him that he was never going to be anyone important because of a name like his, and because of the way he looked and dressed.

95. ## engllish

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

96. ## 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

97. ## 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,

98. ## 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:

99. ## English

Please let me know if this is correct? 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