Mark

Newest questions and responses by Mark
  1. Chemistry

    The densities of three solutions with known concentrations ( 20% , 50%, and 70%), and one unknown solution were determined. If the densities of 20%, 50% and 70% solutions are 0.69 and 0.58 and 0.49 g/mL, respectively, and the denisty of the unknown

    asked on February 20, 2019
  2. Psychology

    You want to conduct a psychological research and must identify a way of collecting data. Your hypothesis is: Mental illnesses occur more frequently in people with top management jobs as opposed to lower level/non-management jobs. Which of the following

    asked on February 9, 2019
  3. english

    for this reference below, how do I cite IN TEXT ? The Federal Response to Hurricane Katrina: Lessons Learned". The White House. January 20, 2009. Retrieved June 7, 2015. is it just(White House). ? Thank you

    asked on December 8, 2018
  4. Math

    suppose y varies directly with x, and y = 25 when x = 140. What is the value if y when x = 36? a.) 140 b.) 165 c.) 201.6 d.) 176

    asked on December 5, 2018
  5. history

    Which identifies a revival of classical art, literature, and scholarship that spanned the 14th to 17th centuries in Europe? Romanticism Renaissance Scientific Revolution Reformation Is It Renaissance?

    asked on November 6, 2018
  6. Math

    The capacity of the box is 36000 cubic centimeters. Find the least materials used in making the box if the length is twice its width.

    asked on October 12, 2018
  7. history

    Using at least one example from each of the three foundational documents that you have worked with on this assignment, tell me how the Magna Carta, the English Bill of Rights, and the Mayflower Compact led to at least three rights of governmental concepts

    asked on September 20, 2018
  8. World History

    What was the historic name of the Southeast Asian region that lies east of India and south or southwest of China? Indochina Mongolia Tibet Philippines B?

    asked on August 3, 2018
  9. electronic

    A 1mm cross section of copper wire is isolated. The charge that flows through the cross section is Q t = 4t^2 + 5 How much current flows through the wire in 6 seconds?

    asked on July 4, 2018
  10. math

    Find the distance from the origin to the line x-2y=4

    asked on June 6, 2018
  11. math

    During a training exercise, a submarine travels 16 km/h on the surface and 10 km/h underwater. if the submarine traveled a distance of 160km in 12.5h, how long was it underwater?

    asked on June 6, 2018
  12. algebra 2

    what is the quotient in simplified form? State any restrictions on the variable. (6-x)/x^2+3x-28 divided x^2-36/x^2+5x-36

    asked on May 31, 2018
  13. math

    The scale for a map says that 1 cm is equal to 25 miles. Jennifer measures the distance between two cities as 4.5 cm. How far apart are the cities? A) 90 miles apart B) 112.5 miles apart C) 128.5 miles apart D) 149 miles apart

    asked on May 23, 2018
  14. Algebra

    An investment account earns 7.5% per year compounded quarterly. How many years will it take for the account to triple its initial value. (Make sure that you round up) For the death of me, I can't figure out how to do this problem. Can anybody walk me

    asked on May 21, 2018
  15. Social Study

    How did the location of the Arabian Peninsula help the Muslims conquer territory beyond the Arabian Peninsula?

    asked on May 20, 2018
  16. Math

    A bus company has 4000 passengers daily, each paying a a fare of For each each $0.15 increase, the company estimates that it will lose 40 passengers. If the company needs to take in $10 450 per day to stay in business, what fare should be charged?

    asked on May 19, 2018
  17. Science

    Can somebody give me their simple definition (6th grade level) of a point source and pollution?

    asked on May 10, 2018
  18. Calculus

    Find the amount of a continuous money flow in which $1000 per year is being invested at 5% compounded continuously for 40 years. How would I set up my equation in order to solve?

    asked on April 27, 2018
  19. Social Studies (Check my work)

    What factors contributed to the weakening and decline of Medieval Europe? My answer: In the 14th century, there was a disease called the black death. It weakened Medieval Europe a lot because it killed millions of Europeans. Is this good?

    asked on April 13, 2018
  20. US History

    Camp meetings, like the one in the picture above, were thought to inspire which of the following? (picture showing crowds of people gathered around people in a forest) Men and women to give their lives to God ** Men and women to accept and pray for sinners

    asked on April 12, 2018
  21. Social Studies help

    What is a cradle-to-grave system? A. a system of state-run hospitals and nursing homes B. an association of doctors and nurses C. an association of nursery schools and public schools D. a system of basic services for every stage of life **

    asked on March 29, 2018
  22. !!!!!SCIENCE HELP!!!!!

    4. Explain the data you will want to collect on your mission, and list the instruments you’ll need so that you can collect and store samples while on your mission. Describe how any collected data will be used when you return from your mission. (3 points)

    asked on March 27, 2018
  23. Math

    A new elementary school will have 50 faculty members. Some will be teachers and the rest will be aides. At this school, teachers will earn 20,000 dollars a year and the aides 12,000 dollars. The total amount to be spent on salaries is $872, 000. How many

    asked on March 13, 2018
  24. Art

    A container is decorated with images of Egyptian gods and placed inside a tomb. What is the likely function of this object, given what you know about Egyptian culture? A. This container was probably designed to protect the internal organs of the dead

    asked on March 12, 2018
  25. Math

    Tom bought three tee shirts for the sale price of $14.50. The three tee shirts were originally priced $3.99,$6.99, and $5.99. How much money did he save compared to the original total price of the T-shirts? Show your calculations. What percentage of the

    asked on March 7, 2018
  26. Math

    Use a left endpoint Riemann sum approximation with four subintervals to evaluate integral from 0 to 8 of g(x)dx These points were given: (0,-1) (1,-1.5) (2,-2.5) (3,-3) (4,-1.5) (6,-0.5) (7,-1) (8,-1.25

    asked on February 25, 2018
  27. math

    A little help please, thanks. Kelly conducted an experiment. In each trial she flipped a coin and rolled a number cube that has sides labled 1 to 6. The results are shown above. What is the experiementl probability that her next flip will be tails? Trial

    asked on February 21, 2018
  28. Calculus

    Your classmate claims that the the function f(x,y) = x^3(e^{x^2−3y^2})−(17−3x^2)(y−2) does not have an absolute maximum nor an absolute minimum when the function is restricted to the disk x^2+y^2 ≤ 7. Please explain why this is incorrect.

    asked on February 16, 2018
  29. Math

    Need some help setting this up. Thank you. A dance studio measures 150 feet by 120 feet. A scale drawing of the dance studio floor measures 10 units by 8 units. What scale was used to create the scale drawing? A) 1 unit: 8 feet B) 1 unit: 10 feet C) 1

    asked on February 15, 2018
  30. Math

    A hippopotamus can stay under water for 15 minutes. A sea cow can stay under water y minutes. This is 11 minutes longer than one third the time a hippopotamus can. Write an equation and solve to determine how long the sea cow can stay under water.

    asked on February 6, 2018
  31. Math

    I'm stumped on this question, would appreciate some help please. Ms. Babalola has a bag that contains 4 white beads, 6 red beads, 5 yellow beads, and 5 blue beads. One head is selected and not replaced. Then a second bead is selected and replaced. Then a

    asked on February 3, 2018
  32. math

    suppose that the average number of snow globes per household is distributed between 3 and 9.

    asked on December 14, 2017
  33. Language Arts

    The football team cannot play ____ best when it is so hot. A. its ** B. our C. their D. you're I had this question in a language arts meeting with my teacher but I forgot the answer. I know that she talked about it being a trick question though so I'm not

    asked on December 12, 2017
  34. Social Studies

    Colombian eradication programs designed to limit or halt the production of crops used to produce drugs is unlikely to cause a decrease in A. deforestation B. poor soil quality. C. The population of Columbia. D. the number of healthy Columbian children. My

    asked on December 7, 2017
  35. Language Arts

    Which sentence correctly uses pronouns? A. If people want to succeed in life, they must know the rules of the game. B. If someone wants to succeed in life, we must know the rules of the game. C. If a person wants to succeed in life, you must know the rules

    asked on December 7, 2017
  36. Language Arts

    Which sentence correctly uses pronouns? A. If people want to succeed in life, they must know the rules of the game. B. If someone wants to succeed in life, we must know the rules of the game. C. If a person wants to succeed in life, you must know the rules

    asked on December 7, 2017
  37. Physics

    The work done by one mole of a monatomic ideal gas (gamma=5/3) in expanding adiabatically is 964 J. The initial temperature and volume of the gas are 395 K and .0848 m^3. Obtain a) the final temperature and b) the final volume of the gas.

    asked on December 6, 2017
  38. Physics-Please Help

    A foot pushes against the ground with a force of 777 N in the vertical direction with a perpendicular displacement of 0.125 m away from the COM and 850 N in the horizontal direction with a perpendicular displacement of 0.025 m away from the COM. If the

    asked on November 30, 2017
  39. Math generating functions

    at present, there is one-hundred thousand in a trust fund. The fund earns two % interest per year, but ten% of the fund is given away each year. Also, ten-thousand is put into the trust fund per year. 1a) Obtain and solve the difference equation by

    asked on November 27, 2017
  40. Statistics

    Sickle cell disease is an inherited blood disorder that affects red blood cells. Since it is a recessive disorder, a person inheriting two sickle cell genes will have the disease, whereas a person inheriting only one sickle cell gene will be healthy, but

    asked on November 27, 2017
  41. Ed tech

    Which of the following questions will most likely be answered by displaying data on a bar graph? A. Which bank account earned interest the fastest last year? B. Which ice cream flavor do the most students prefer? ** C. How many total hours did the class

    asked on November 12, 2017
  42. Scott ---algebra

    Scott... wouldn't the x be -6?..thanks posted by mark today at 6:56pm. use intercepts to graph the line described by each equation: -6y = -4x + 24 I was told that the x intercept is 6 the y intercept is -4 Can you please explain to me how that's the answer

    asked on November 7, 2017
  43. algebra

    use intercepts to graph the line described by each equation: -6y = -4x + 24 I was told that the x intercept is 6 the y intercept is -4 Can you please explain to me how that's the answer step by step please (baby steps) Thank you

    asked on November 7, 2017
  44. math

    Write a system of equations, three equations/three unknowns, that has (1, 2, 3) as the solution.

    asked on November 5, 2017
  45. pre algebra 8

    Michael wants to rent a car on his vacation. The rental fee is 60 dollars per day plus a refueling charge of $40. He has at most 400.00 to spend. The inequality 60d +40

    asked on November 4, 2017
  46. Grade 8 prealgebra

    Michael wants to rent a car on his vacation. The rental fee is 60 dollars per day plus a refueling charge of $40. He has at most 400.00 to spend. The inequality 60d +40

    asked on November 4, 2017
  47. grade 8 pre-algebra

    Grace earns 7 dollars for each car she washes. She always saves 25 dollars of her weekly earnings. This week, she wants to have at least 65 dollars in spending money. How many cars must she wash? Write and solve an inequality to represent this situation.

    asked on November 4, 2017
  48. Math help

    Paul is painting a square wall with an area of 115 square feet. To the nearest foot, what is the length of the wall? (1 point) 11 29 ** 42 58

    asked on October 29, 2017
  49. chemistry

    Calcium carbide (CaC2) reacts with water to produce acetylene as follows. The complete reaction of 25.2g CaC2 produces ____ grams of calcium hydroxide. CaC2(s) + 2H¬2O(g) → Ca(OH¬)2(s) + C2H2

    asked on October 26, 2017
  50. mark check my work algebra

    a cartoonist uses the function below to calculate the net profit he earns from sellings his drawings.In the function, d represents the number of drawings he sells. N(d)= 30(d)-$500...what is domain of N(d)? is the answer all non negative real numbers?

    asked on October 25, 2017
  51. pre algebra

    f(x)=9x+7 The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined. help why is the answer negative infinity, infinity? thank you so much...please

    asked on October 25, 2017
  52. pre algebra

    what is the domain of the function below? f(x)= -x^2 + 11 thank you choices are: 1. (- infinity, 11) 2. (-infinity, infinity) 3.(-11, 11) 4. (11, infinity)

    asked on October 25, 2017
  53. Math/Physics

    Steve (85 kg) is gliding (v ≠ 0) east on his cross-country skiing across a flat section of snow and is experiencing a wind resistance of 2 N against him. The coefficient of kinetic friction between the skis and the snow is 0.09. If the force of friction

    asked on October 23, 2017
  54. pre algebra

    Lilliana is training for a marathon. She runs the same distance every day for a week. On Monday, Wednesday, and Friday, she runs 3 laps on a running trail and then runs 6 more miles. On Tuesday and Sunday, she runs 5 laps on the trail and then runs 2 more

    asked on October 19, 2017
  55. Calculus

    a pebble is dropped into a calm pond, causing ripples in the form of concentric circles. the radius r of the outer ripple is increasing at a constant rate of 1 root per second. When the radius is 4 feet, at what rate is the total area A of a disturbed

    asked on October 10, 2017
  56. pre algebra

    Jonathon is starting a new job where he will earn $100 per week plus 15% commission on all sales. Write an equation and solve it to show what his sales were for a week if he earned $380.00? Round your answer to the nearest integer. Thank you! I think you

    asked on October 5, 2017
  57. Social Studies

    The Inuit made temporary shelters in the summer out of which type of material? A. Snow B. Animal skin ** C. driftwood D. metal I'm confused because they made tents out of driftwood and animal skin.

    asked on October 5, 2017
  58. PE

    A ________ is the way a person reacts to a situation based on the social environment in which a person grows up. Coping Strategy Defense Mechanism ** learned emotion primary emotion

    asked on September 30, 2017
  59. Language Arts

    What impact did your Independent Reading selection have on you as a reader? Would you recommend your selection to a friend? Why or why not? Support your response with at least two pieces of evidence from your Independent Reading selection. Be sure to give

    asked on September 30, 2017
  60. Math

    How many ounces of 1% antifreeze solution must be added to 100 ounces of 40% antifreeze solution to obtain a 16% antifreeze solution? how do I set this equation up?

    asked on September 29, 2017
  61. Social Studies

    Since Canada’s labor force growth is made up of 70% immigrants and is projected to rise to 100%, you might best speculate that Canada’s government has a(n) ______________ policy. A. anti-immigration B. pro immigration C. Constitutional ** D. democratic

    asked on September 29, 2017
  62. math

    here are a series of questions and my answers are down below, please help me if I am wrong 1. Sain Advertising Ltd.’s opening trial balance on January 1 shows Supplies $1,600. On January 11, the company purchased additional supplies for $2,510 on

    asked on September 28, 2017
  63. 9th grade algebra

    solve for h The formula for finding the area of a trapezoid is A = 1/2 (b1 + b 2)h where A represents the area of the trapezoid, b1 and b2 are bases, and h represents the height. Solve the formula for h. I know the answer is h = 2A/b1 + b2 but I don't

    asked on September 28, 2017
  64. Economics

    You have $3000 in an account that yields a nominal return of 6%. If the inflation rate is 3%, how long will you have to leave your money in the account for it to double in real terms?

    asked on September 26, 2017
  65. Math

    You have $3000 in an account that yields a nominal return of 6%. If the inflation rate is 3%, how long will you have to leave your money in the account for it to double in real terms?

    asked on September 26, 2017
  66. Language Arts answers

    Players wear helmets and pads for protection. (direct objects, predicate nouns) Helmets and pads for protection.(direct object) However, injuries can sometimes be serious or lasting. (indirect objects, predicate adjectives) Sometimes be serious or

    asked on September 21, 2017
  67. Language arts help

    Identify the complement in each sentence. Then, indicate its type in parentheses. Football is a sport and also entertainment. (indirect objects, predicate nouns) _____________________________ Please help. I have no idea how to do this. I don't know how to

    asked on September 21, 2017
  68. Journal entries accounting

    journalize the following entries: 1, Received partial payment of $211 from J. Kronsnoble for work billed on June 7. 3. Paid for supplies purchased on June 4. my answers: 1. cash 211 accounts recvieable 211 3. supplies 258 accounts payable 258

    asked on September 20, 2017
  69. Math

    Sam is at the driving range practicing his swing. During Sam’s golf drive, the initial angular velocity of his club is 5 rad/s at the start of the backswing. The constant, average angular acceleration of the club between the start of the backswing and

    asked on September 20, 2017
  70. Math

    Sam is at the driving range practicing his swing. During Sam’s golf drive, the initial angular velocity of his club is 5 rad/s at the start of the backswing. The constant, average angular acceleration of the club between the start of the backswing and

    asked on September 20, 2017
  71. Math/Physics

    Sam is at the driving range practicing his swing. During Sam’s golf drive, the initial angular velocity of his club is 5 rad/s at the start of the backswing. The constant, average angular acceleration of the club between the start of the backswing and

    asked on September 19, 2017
  72. Math

    You are going hiking in Brown County State Park this weekend and want to plan your route to Lake Monroe. Starting from the parking lot, you plan on hiking 2300 m due west, 17500 m due south, 1900 m due east, and 1200 m due north. What will be the total

    asked on September 19, 2017
  73. pre algebra

    a(n-3)+8=b solve for n an-3a +8=b (subtracted an from left side) I get: 3a+8 = b-an =3a +8 = b-a(n) =3a+8/b-a = n but i think this is wrong...help...thank you

    asked on September 18, 2017
  74. algebra 1

    given that 1 mile is 5280 feet, covert 92 feet per minute to miles per hour I don;t get it...the part that confuses me is the "per minute" ..i don;t get the relationship to the mile thing....totally stumped..sorry can't even offer an idea how to do this

    asked on September 18, 2017
  75. Math

    In how many ways can 4 married couples seat themselves around circular table if at least one husband sits beside his wife?

    asked on September 9, 2017
  76. Language Arts

    Choose the phrase that would best replace the italicized words in the sentence. the ringing of the school bell was "music to my ears" A. a pleasant melody B. a band playing loudly C. a welcome sound** D. a warning signal

    asked on September 8, 2017
  77. Social Studies

    Both parliamentary and unitary systems A. deny voting rights to their citizens. B. Give most power to the states. C. Have strong national executive leaders. ** D. Forbid local governments from making decisions.

    asked on August 31, 2017
  78. Social Studies

    1. Which statement best describes nations? A. must follow the laws set by the United Nations. B. Nations have less political power than do regional organizations. C. Nations interact almost exclusively with other nations in their region, D. Nations have

    asked on August 31, 2017
  79. Educational Tech

    Which of the following should you use to change text size, color, and font face to make a section label stand out? A. Overtype B. Heading Styles C. text wrapper ** D. Footnote

    asked on August 31, 2017
  80. Social Studies

    A) the U.S. cannot get goods from other places. Reactivate B) Canada has better farming areas than the U.S. ** C) the U.S. and Canada are unified by trade agreements. Reactivate D) Canada and the U.S. are located close to one another.

    asked on August 29, 2017
  81. building a stair system

    My stair system, call it a triangle, is 360 inches in diameter, and 77.5 inches high. what is the length and formula?

    asked on July 24, 2017
  82. Math

    A farmer kept track of his cows and chickens by counting both the legs and the heads, if he counted 78 legs and 35 heads, how many cows and how many chicken did he own?

    asked on July 10, 2017
  83. Accounting

    A company operates an arcade place where customers put money into game membership cards and they also accumulate points for winning and can be redeemed for prizes. How to account for the credits not yet used and also the points? I would think.... 1) For

    asked on July 2, 2017
  84. math

    Two simmers are swimming in a lake. Swimmer A starts swimming at a speed of 1m/sec towards the shore from a distance of 30 m. Swimmer B starts swimming towards the shore from 10m behind swimmer A but he swims at 1.5m/sec. Which swimmer will arrive at the

    asked on June 29, 2017
  85. math

    how many different 5 player teams can be chosen from eight players? What formula do I use to solve this?

    asked on June 26, 2017
  86. Riddle

    I make it happen then I get lost

    asked on May 14, 2017
  87. Statistics

    Two cards are drawn in succession from a deck without replacement. What is the probability that both cards are greater than 2 and less than 8?

    asked on May 3, 2017
  88. 8th gr algebra

    There are 52 cards in a standard deck. if you draw a card, do not replace it, and then draw 4 more cards, one at a time without replacement, how many possible outcomes are there? I don't get it...Thank you

    asked on May 2, 2017
  89. alalgebra 8th grade check my work

    At an amusement park, Tami chooses one each from the following options: 3 movies, 20 rides, 6 snack shops. Find the number of possible outcomes. Is it 3 x 20 x 6 = 360 possible outcomes? thanks!!!!!

    asked on May 2, 2017
  90. Wave Particles

    A stationary proton absorbs an x-ray with a wavelength of 0.24 nm. Determine the proton's final velocity.

    asked on April 25, 2017
  91. Trig/Pre-Calc

    A bird is flying 30 mph in a direction 30 degrees south of east. Affecting the flight of the bird is a wind blowing from the northeast to the southwest at a speed of 10 mph. What is the resulting speed of the bird?

    asked on April 21, 2017
  92. Math

    Joe takes his wife and four children to the movies. their tickets cost $56. the adult tickets cost twice as much as the children's tickets. how much is one adult ticket?

    asked on April 17, 2017
  93. geometry/check my work

    For triangle ABC , which transformation composition is Commutative? a) rotate 30 degrees and then translate 2 units down b) translate 5 units to the right and rotate 90 degrees c) reflect across the y-axis and then rotate 90 degrees d) reflect across the y

    asked on April 5, 2017
  94. grammar-check my work thank you

    Identify the phrase in parentheses as a gerund phrase, participle phrase or infinitive phrase. When the Christmas holidays arrive, (bustling shoppers fill the stores). I think it is a gerund phrase because it acts as a noun

    asked on April 3, 2017
  95. physics

    if f1= 3i + 5j + 6k and f2= 2i + 3j - 4k both measure the newton are displaced by d= 3i - 2j + 4k measure the metre, find the workdone

    asked on April 1, 2017
  96. English

    1. The idiom get inside the authors head means to 2. Base word of accusation

    asked on March 26, 2017
  97. Physics

    A car is traveling on a level horizontal rode comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to try leaping it with his car. The side of the road the car is on 21.3m above the river,

    asked on March 22, 2017
  98. Physics

    A car is traveling on a level horizontal rode comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to try leaping it with his car. The side of the road the car is on 21.3m above the river,

    asked on March 22, 2017
  99. Math

    If I earn £200 a week,the tax man takes 3/8 of it and I pay my mum 1/2 of my earnings for rent , how much do I end up having to spend on things I want?

    asked on March 17, 2017
  100. Organic Chemistry

    What is the literature value for the partition coefficient for caffeine?

    asked on March 15, 2017

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