# Martha

Most popular questions and responses by Martha
1. ## american gov

Based on the excerpt, which statement best illustrates the impact of Lincoln’s proclamation on government? A >It increased the influence of the legislative branch. B. It caused the voters to elect a Democratic Congress. C> It allowed slaves to vote

2. ## science

A 0.513 M solution of a weak base has a pH of 11.4. What is the Kb of the base?

3. ## math

Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid \$1,307 interest on \$45,000 at 4.0%. What was the time, using exact interest?

Sam Long anticipates he will need approximately \$225,000 in 15 years to cover his 3-year-old daughter’s college bills for a 4-year degree.How much would he have to invest today at an interest rate of 8 percent compounded semiannually?

5. ## Physics

I know this is long but can someone just explain it to me? Please? Don't have to give the answer, I'm just confused :( 1. An experiment was devised to investigate the effects on the temperature of a cup of hot tea when lemon juice is added at different

6. ## math

Find the value of C that will make 25x^2-40x+c a perfect trinomial.

7. ## circumference...math

A Ferris wheel makes 12 revolutions per ride. How far would someone travel during one ride if the diameter is 63 feet?...thanks!

8. ## Social Studies

Use the passage to answer the question. “This great nation will endure as it has endured, will revive and will prosper. So, first of all, let me assert my firm belief that the only thing we have to fear is fear itself—nameless, unreasoning, unjustified

9. ## Chemistry

74. Sodium hydrogen carbonate is also known as baking soda. When this compound is heated, it decomposes to sodium carbonate, carbon dioxide, and water vapor. Write the balanced equation for this reaction. What volume of carbon dioxide gas at 77 degrees C

10. ## Social Studies

Which of the following was true of people moving to suburbs and purchasing automobiles? A. Women were allowed to drive and thereby gained more freedom. B. It was a lifestyle only the wealthy could afford. C. Women were left isolated all day as men took the

11. ## Math

1. Find the area of a parallelogram with base b and height h. b = 87 cm h = 18.6 cm (1 point) My answer: 211.2 cm (2)

12. ## Math

On a centimeter dot grid, draw all the possible rectangles with a perimeter of 14 cm and sides whose lengths are whole centimeters. Label the lengths of two adjacent sides of each rectangle.

13. ## Geometry

In geometry, a common standard setting for enlarging on a copy machine is 121 percent. What does this mean?

14. ## acrostic poem

i need to make an acrostic poem using the word SECRETS. it needs to be phrases that all run together to make little poem story thing. HELP!

15. ## chemistry

Why does CdS dissolve in HCL, when CuS and Bi2S3 will not?

16. ## theory of dressmaking

what is disposal of fullness

17. ## SCIENCES

the major commercial aluminium ore is bauxite,AlO3.H2O(s).What is its molar mass?The analysis of a representive sample of bauxite shows it contains 70% by mass of Al2O3..What is the maximum mass of aluminium metal that could be obtained from 200kg of

18. ## physics

Two charged spheres are 8.00 apart. They are moved, and the force on each of them is found to have been tripled

19. ## physical science

A 12-kg iron ball is dropped onto a pavement from a height of 90m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C

20. ## Physics

An anti aircraft gun fires at an elevation of 60degree at an enemy aircraft at 10000m above the ground.at what speed must the cannon be shot to hit the plane at that height?(take g = 9.8m/s.)

21. ## Calculus

An air ambulance is travelling from Barrie to Toronto. Toronto is located 90 km [S5°E] of Barrie. If the wind is blowing from the South with a velocity of 42 km/h, and the plane’s air speed is 400 km/h, what direction must the pilot fly to make it to

22. ## Maths

If 3,A,B,192 are consecutive terms of a gp . find the values of A and B

23. ## physics

52.(52G) A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350 N. For the first 15 m the floor is frictionless, and for the next 15 m the coefficient of friction is 0.30. What is the final speed of the crate?

24. ## Physics

A certain coiled wire with uneven windings has the property that to stretch it an amount s from its relaxed length requires a force that is given by , so its behavior is different from a normal spring. You suspend this device vertically, and its

25. ## AP chem

The equilibrium constant for the reaction PCl3(g) + Cl2(g) ⇀↽ PCl5(g) is 35000 at 760 ◦C. At equilibrium, the partial pressure of PCl5 was 160 bar and that of PCl3 was 9.85 bar. Calculate the equilibrium partial pressure of Cl2. Answer in units of

26. ## MATH

In a race, a triathlete runs 1/3 of total distance, cycles 2/5 of the total diatance and swims the ramaining distance. he swim 1.200 meters. What is the total distance of the race?

27. ## college algebra

solve x^6 - 64 = 0

28. ## chemistry

What os the balanced equation for the reaction between ethanoic acid and water?

29. ## Kgothala secondary

Life oriatation, description of recent service delivery protest

30. ## Math

At the school store, colored pencils are reduced from \$2.40 a box to \$2.00 a box. What is the percent of decrease?

a). How many ways can a person select three appetizers and two soups if there are six appetizers and five soups on the dinner menu? b). Three married couples have bought tickets for six seats in a row for a movie. - HOw many ways can they be seated? - How

32. ## precalculus

Can you please check and correct my answers? Convert to Rectangular: r*tanΘ/secΘ=2 ________________________________________ y=2 y=½ x=2 x=½ answer: y=2 Given: 5cos6Θ What is the shape of the function? ________________________________________ Limacon

33. ## geo area & volume

ok it asks me 2 find the lateral area of the cylinder ( the radius is 5 n the hight is 5) can some 1 help me with this please 392.5 Prinness, I think that 392.5 is pi*r^2*h, or the volume of the cylinder. This question asks for the lateral area. Lateral

34. ## physics

Landing with a speed of 87.7 m/s, and traveling due south, a jet comes to rest in 939 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration. Magnitude of acceleration

35. ## Physics

An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

36. ## Math

Six cards numbered 1 through 6 are placed in a hat. One card is taken from the hat. The unit's digit of the sum of the numbers on the remaining cards are 9. What was the number on the card taken from the hat?

37. ## economics

Market demand is given as QD = 200 â€“ 3P. Market supply is given as QS = 2P + 100. Each identical firm has MC = 0.5Q and ATC = 0.25Q. What is each firmâ€™s profit?

38. ## chem 121

We did a lab separating out the components of a mixture. One of the lab questions is "The weight of naphthalene was obtained by weighing the collected solid. Was this an accurate weight of the naphthalene present in the original sample?" I don't know how

39. ## chemistry

treatment of a 0.3203g sample of impure soduim chloride with an excess of AgNo3 resulted in the formation of 0.7331g of AgCl. how many grams of sodium chloride were in the sample? What is the weight percentage of NaCl in the sample?

40. ## grammar

Although the abscess was incised and drained in the emergency room and cultures were obtained, which grew coag-positive staphylococcus.

41. ## calculus

Wiley jumps straight up in the air from the edge of a cliff so that when he comes down he falls off the cliff. The cliff is 40 feet off the ground. His height t seconds after he jumps is s= -16t2 + 12t + 40.What is the maximum height? What is his maximum

42. ## Literacy

Which Boolean operator limits your search so that each term input must be in the same document

I read the story "the Country Mouse and the City mouse" to a small group of students. I then asked them to list how the country mouse and the city mouse are alike and how they are different. They fully understand the meaning of the words alike and

a snail travels about 0.13 cm in one minutes.how far would it travel in 7 minutes if it keeps up the same speed?About how long would it take to go 3 m?

45. ## Physics

Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface, are Copenhagen (55.67° N latitude), and Rome (41.90° N latitude)? The two cities

46. ## life orientation

Three human rights violations and their examples

47. ## statistics

A clinical trial test a method designed to increase probability of conceiving a girl.In study 375 were born and 300 were girls Use sample data to construct 99%confidence interval of percentage girls born

A circular path two feet wide has an inner diameter of 150 feet. How much farther is it around the outer edge of the path than around the inner edge ?

49. ## Public Speaking

To avoid speaking in monotone, a strategy to use can include: A. changing pitch and tone of voice. B. voice inflection. C. varying rate and pace of speaking. D. All of the above I read through my notes and I see A and B as answers, I don't see anything

50. ## chemistry

A 0.010 M solution of aspirin, a weak monoprotic acid, has a pH of 3.3. What is the Ka of aspirin?

51. ## Maths

A group of office workers had some prize money to distribute among themselves. When all but one took \$9 each, the last person only received \$5. When they all took \$8, there was \$12 left over. How much money had they won? I keep getting \$68 but the answer

52. ## chemistry

treatment of a 0.3203g sample of impure soduim chloride with an excess of AgNo3 resulted in the formation of 0.7331g of AgCl. how many grams of sodium chloride were in the sample? What is the weight percentage of NaCl in the sample?

53. ## Chemistry - Equilibrium

You have an unknown concentration of ammonia. When you add 15.0mL of a 0.400 M HCl solution to 50.0mL of the ammonia solution, the pH of the solution becomes 8.75. What is the concentration of the original ammonia solution? [Kb (NH3) = 1.8 x 10^-5]

54. ## chemistry

treatment of a 0.3203g sample of impure soduim chloride with an excess of AgNo3 resulted in the formation of 0.7331g of AgCl. how many grams of sodium chloride were in the sample? What is the weight percentage of NaCl in the sample?

55. ## Physics

Two teams are having a rope pulling contest. Team A is pulling with a force of 2400 N at 135 and team B is 1550 N at 315. What is the resultant force?

56. ## psy210

What are the characteristeics of the eight different types of love?- consummate, companionate, romantic, fatuous, infactuated,empty love.

57. ## Math

On Saturday, Paula sold all her mangoes, oranges and grapefruits at the market. 60% of the fruits were mangoes, 25% of the fruits were oranges, Paula had 45 grapefruits. What percentage of the fruits sold were grapefruits?

58. ## chem

A 1.27-g sample of a mixture of AgNO3 and NaNO3 is treated with excess Na2S(aq). The precipitate is filtered off, dried and weighed. The dried precipitate weighs 0.46 g. What is the percentage by mass of NaNO3 in the original mixture?

59. ## statistics

The following list is a sampling of the costs of various statistics textbooks used at several colleges. Give the upper confidence limit for a 95% confidence interval estimate for the mean cost of all statistics textbooks. 109.95; 92.00; 96.70; 84.85;

60. ## Human services

find at least three examples of mission statements for human services organizations. show how each one of the mission statements does or does not meet the requirements of a good mission statement. Then determine what other purpose or function the mission

61. ## Chemistry

Use the Henderson Hasselbalch equations to solve for the Ka of the acid. Solution [HX]=0.200M and [NaX]=0.200M. They both have a pH of 4.11.

62. ## solomon mahlangu high

Identify three courses or study fields you are interested in following after grade12 write them down in order of preference

63. ## Science

Explain how chemiosmosis functions in the cell. Discuss the energy transfers and explain the role of ATP in this process.

64. ## economics

A monopolist faces market demand given by P = 200 â€“ Q. For this market, MR = 200 â€“ 2Q and MC = 3Q. What quantity of output will the monopolist produce in order to maximize profits?

65. ## Mathematics

There are 2 red cars and 3 blue cars. The 5 cars contain a total of 12 people. No car has more than 4 people. Every car has at least 1 person. The only cars with the same number of people are the red cars. How many people are in 1 red car?

66. ## math

only 5% of the carbon-14 in a small wooden bowl remains , how old is the bowl? Hint, half-life for carbon –14 us 5730 years

67. ## 8th algebra

I only need help writing the equation, not solving it. This is sothe problem. Manuel's budget allows no more than \$50 per week for gasoline and car washes. Gasoline costs \$2.30 per gallon, and a car wash costs \$8.50. This week, Manuel gets a car wash.

68. ## geometry

Triangle DEF contains two congruent acute angles. The sum of the measures of the two congruent acute angles is greater than 90 degrees. Anna concludes that the triangle must be an acute triangle. Which best describes her conclusion?

69. ## math

Compound Interest Question James has 10,000 to invest. If he invest money in a savings account that pays 4% APR, calculate the following: a) how long will it take to have a total of 15,000 if interest is compounded quarterly (3months)? b)how much will he

70. ## accounting

how to The beginning inventory of merchandise at Francesca Co. and data on purchases and sales for a three-month period are as follows:

71. ## MATH

BENNY PLAYS TWO SPORTS. HE PLAYS SOCCER FOR 3/4 OF THE TIME AND PLAYS BASEBALL FOR 30-MINUTES. HOW MANY MORE MINUTES DOES HE PLAY SOCCER THAN BASEBALL? My answer is he plays soccer 7 minutes more. Am I correct. How do I make a diagram for this problem.

72. ## Algebra

Hello, I have been trying a few ways to do this problem and am not having success. The sum of four consecutive odd integers is -212. Write an expression for the second, third and fourth odd integers. Use these expressions to write, and solve an equation to

73. ## chemistry

A 20ml hydrochloric acid is diluted by 80ml of distilled water, what would be the pH of the hydrochloric acid after the dilution?

74. ## Math

Assume the shoe is sold at 50% profit margin (profit as % of sales). If the cost of raw material were to increase by 50%, what would the new profit margin be? Cost of manufacturing a shoe: Raw materials = 25% Labor = 12.5% Marketing & Advertising = 25%

75. ## Math

Tickets for the school play were \$6.00 and 1/5 of each ticket paid for the cost of printing the programs.how much of each ticket went towards printing the programs.

76. ## calculus

let f(x) = 2x^5-5x^4 find open intervals on which f is a) increasing b)decreasing Find values of x at which f has c) relative max and min find open intervals d) concave upward e) concave downward c) find the inflection points of f

77. ## College Algebra

solve the equation for r: S= (rL-a)/(r-x)

78. ## physics 2

A proton is located at the origin of a rectilinear coordinate system. An electron is at x=4pm, y=3pm. What is the force on the proton. Give your answer in unit vector notation.

Hi, I am working with a group of children and my goal is to assist them in improving their reading. The children are between the ages of 7 and 8 and they are struggling in reading and fluency. I did a few phonogram lessons, as well as some reading and

80. ## human health

find at least three examples of mission statements for human services organizations. show how each one of the mission statements does or does not meet the requirements of a good mission statement. Then determine what other purpose or function the mission

81. ## Chemistry

Consider a mixture of two gases,A and B, confined in accosted vessel. A quantity of a third gas C, is added to the same vas sekar the same temperature. How does the addition of gas C affect the following: a. The partial pressure of gas A. b. The total

82. ## PHYSICS

The Victoria Falls is the tallest waterfall on Earth measuring 108 meters at its highest point. How long will it take for a single drop of water to fall over its edge into the chasm below?

83. ## physics

A car moves at a constant speed of 24m/s. How long (in minutes) will it take to travel 15.0 km?

84. ## physics

a ball is released from rest and rolls down a slope. It covers 7.5m in 12.4s. Find the average speed of the ball in m/s and km/hr.

85. ## algebra

a rocket is launched at the top of a building. the height of the rocket (in meters) written in terms of time (seconds) can be modeled by h(t)=-4.9t^2+9.8t+73.5. what is the maximum height?

86. ## Kgothala secondary

Life oriatation

87. ## life orientation

Evaluation of current protests

88. ## Math

James has 10,000 to invest. If he invest money in a savings account that pays 4% APR, calculate the following: a) how long will it take to have a total of 15,000 if interest is compounded quarterly (3months)? b)how much will he have after 7yrs if interest

89. ## Physics

What is the magnitude of the electric field 0.3 m from a 10-4 C point charge?

90. ## physics

A distance runner moves at a constant pace of 4.1m/s. how far (in m) does he move in 30 minutes?

91. ## english

i don't get how to write a motivator for an expository essay?

Connect each pair of senences by including a traditional word or phrase and any necessary punctuation. Sentences: 1.Discoveries in neuroscience have yielded many benefit.Researchers have developed medication for schizophrenia and Tourette's syndrome. 2.

At a fair run by a local charity organization, it costs 50 cents to try one's luck in drawing an ace from a deck of 52 playing cards. What is the expected profit per customer if they pay \$4 if and only if a person draws an ace. I presume that the drawn

94. ## American Government

I need help with this question: Althouh the New Jersy plan was not entirely adopted at the Constitutional Convention,the New Jersey Plan contained an idea that later became known as the ____________ which requires judges to treat federal laws superior to

95. ## Journal

How do I begin a Journal for a homework assignment on Subordinate Group Member? I need help with knowing how to start my Jounal, so can someone help me please? To what group is the member a subordinate? What is the purpose of the journal? If you are still

96. ## Math

How many real-number solutions does the equation have? -7x^2+6x+3=0 a) 1 b) 2*** c) none d) infintely

97. ## Trig

Find all solutions in the interval [0,2pi) 4sin(x)cos(x)=1 2(2sinxcosx)=1 2sin2x=1 2x=1/2 x= pi/6, and 5pi/6 Then since its 2x i divided these answers by 2 and got pi/12 and 5pi/12 However, when i checked the answer key there solutions 13pi/12 and 17pi/12

98. ## Sixth Grade Pre Algebra

Can someone please help me ? I think I'm supposed to put all the like terms together, but I can't remember how to do this. I asked my mom but she can't remember. Solve for x 6x - 6 equals 2x - 26 Solve for x 2x - 1 equals -5x - 85 Thank you very much. Can

99. ## Math

The area of a rug was 45 square ft.the rug was separated equally into four colors.how many square feet were there in each color?