Popular questions and responses by carlos
  1. algebra

    suppose you want to build a rectangular sandbox where the width is 4 ft less than the length and the diagonal is 4 ft longer than the length. what are the dimensions

    asked on December 1, 2012
  2. chemistry

    How do you calculate the mass percent composition of nitrogen in NO2?

    asked on September 27, 2014
  3. Chenistry

    A 0.8870g sample of a mixture of nacl and kcl is dissolved in water and the solution is then treated with an excess of agn03 to yield 1.913g of agcl. Calculate the percentage by mass of nacl in the mixture 1.913g/ 143 = 0.0133 M agcl x/58 + Y/74 (0.887g-x)

    asked on January 19, 2014
  4. math

    John let out 50 foot of kite string when he observes that his kite is directly above a point on the ground 30 feet away from him, how high is the kite ?

    asked on March 15, 2017
  5. Nouns

    Hawaii is one of the most beautiful places on earth. Would "places" be considered a noun??

    asked on May 13, 2010
  6. Nouns

    In the United States, cell phones are a very popular item. The nouns in this phrase would be "United States" and "cell phones" but would "item" be considered a noun also??

    asked on May 13, 2010
  7. Grammar

    Adam and eve lived in the garden of Eden. What are the verbs in this phrase.

    asked on May 10, 2010
  8. statistics

    Expected relative frequency probability represents a calculated probability based on large numbers of trials. In an example of a deck of 52 cards, where you randomly pull cards from the deck and record what they are, you find that over 1000 random draws,

    asked on July 28, 2012
  9. Math - Please check!

    1. Find the circumference of a circle with a diameter of 11 cm to the nearest hundredth. Measurement formula C = pi x diameter a. 34.54 cm *** b. 17.27 cm c. 5.5 cm d. 33 cm 2. Which of the following is an irrational number? a. square root 144 b. 0.25 c.

    asked on April 14, 2016
  10. Algebra II

    A bacterial population in a broth culcture has been growing exponentially. It was at a density of 4300 individuals per mL two hours ago and is now 5850 individuals per mL. What was the density 4 hours and 15 minutes ago?

    asked on July 23, 2018
  11. Math - Help!

    Which number is an irrational number? a. 0.12 b. 0.1257486… *** c. 0.12121212… d. 0.111111…

    asked on April 14, 2016
  12. English

    Which of the following describes literary analysis? Need help Please. A.writing that is vague and uncertain B.a central message about life C.determining the meaning behind events and characters’ actions D.written directions about how the actors sound and

    asked on April 27, 2014
  13. Physics

    A girl sitting on a merry-go-round moves counterclockwise through an arc length of 3.75 m. If the girl’s angular displacement is 2.12 rad, how far is she from the center of the merry-go-round? Answer in units of m

    asked on February 4, 2014
  14. statistics

    An extreme score that sets apart in value from the general distribution of values with which it is connected is known as…?

    asked on July 28, 2012
  15. ap physics

    You measure the radius of a wheel to be 4.16 cm. If you multiply by 2 to get the diameter, should you write the result as 8 cm or as 8.32 cm? Justify your answer.

    asked on September 19, 2010
  16. Nouns

    In 1999, John went to Disney world for vacation. In this phrase the nouns would be "john" and "Disney world". But would vacation be considered a noun to??

    asked on May 13, 2010
  17. Grammar

    Jesus Christ died to save the world. Are the verbs died and save because it shows the actions that he did or just one of them?

    asked on May 10, 2010
  18. game Theory

    When the McDonald Corporation reduced the price of its Big Mac by 75 percent if customers also purchased french fries and a soft drink, The Wall Street Journal reported that the company was hoping the novel promotion would revive its US sales growth. It

    asked on December 12, 2009
  19. Math

    An insurance company reported that 50% of all automobile damage claims were made bye people under the age of 25. If seven automobile damage claims were selected at random, determine the probability that exactly five of them were made by someone under the

    asked on April 13, 2020
  20. math

    If a ball is thrown into the air with a velocity of 10 m/s, its height (in meters) after t seconds is given by y = 10t − 4.9t2. Find the VELOCITY when t = 1.

    asked on May 22, 2019
  21. science

    A ball rolling down an incline travels 6.0 cm in the first 0.25 econds, and 24 cm in the first 0.50 seconds. Find: a)The average speed for the first quarter second time interval B) The average speed for the second time interval C) Find its acceleration

    asked on September 5, 2018
  22. Health part 2

    The brain is divided into the _______. A. Cerebrum B. Cerebellum C. Brain stem D. All of the above

    asked on November 5, 2013
  23. Math

    soybean meal is 12% protein; cornmeal is 6% protein.How many pounds of each should be mixed together in order to get 240-lb mixture that is 10% protein% How many pounds of the cornmeal should be in the mixture?_____pounds How many pounds of the soybeans

    asked on July 18, 2009
  24. math

    A rectangular prism has dimensions 5 by 6 by x. If the total surface area of the prism is 157.9 square units, what is the value of x? What is the volume of the above prism?

    asked on April 15, 2018
  25. Algebra

    J is the set of all fractions in the form of a/(a)square where a cannot not equal to 0 Column A: a (any member of set J) Column B: 1 A. Quantity in column A is greater B. Quantity in column B is greater C. two quantities in both columns are equal D.

    asked on March 13, 2017
  26. Chemisrty

    Assuming equal concentrations, rank these solutions by pH: hclo4 caoh2 NH3 koh hbro

    asked on March 5, 2016
  27. math

    Dylan uses the expressions (x2 – 2x + 8) and (2x2 + 5x – 7) to represent the length and width of his bedroom. Which expression represents the area (lw) of Dylan’s room?

    asked on April 12, 2015
  28. Physics

    if the water in the river moves downstream at 4mi/hr heading the boat straight across the river, what direction will the boat move relative to the shore? i don't want the answer... i want someone to explain. i wanna learn

    asked on October 16, 2013
  29. science

    velocity of 2.9 m/s speed increase of 7.6 m/s in 4s What is her acceleration ?

    asked on October 25, 2012
  30. government

    what is a good example of cloture?

    asked on June 25, 2012
  31. geometry

    if EBD= 4x-8, and EBC=5x+20, find x

    asked on September 12, 2011
  32. languaje art

    i have some sentences i need to separates subjects and predicates

    asked on September 1, 2010
  33. Nouns

    Reggei bought a computer today at the store for $700. Are the following words nouns: reggei, bought, computer, store,and $700. Do I need to add more or eliminate??

    asked on May 13, 2010
  34. Grammar

    Tony liked that car at the dealership. The verb in this phrase would be "liked" right becuase is the action that Tony is shownig?

    asked on May 13, 2010
  35. Grammar

    A high school is a valuable asset. What are the verbs

    asked on May 7, 2010
  36. psychology

    List of Personality Traits

    asked on December 11, 2008
  37. math

    what are the answers to graphing nonlinear relationships quick check pls help im confused

    asked on February 13, 2020
  38. social studies

    countries seek economic development because it

    asked on January 7, 2020
  39. phicis

    a rock is dropped from a cliff and reaches the ground in 2.70s . At the same time another rock is thrown horizontally from the same height with initial x velocity of 0.95 m/s. what distance will in x will the second recover?

    asked on February 3, 2019
  40. algebra

    The admission for a school play is $2.50 for children and $9.00 for adults. On a certain day, 288 people attended the play, and the total money collected from sales was $1760. How many children and how many adults were admitted?

    asked on April 11, 2017
  41. word problem, please help

    In 1994 the moose population in a park was measured to be 6400. By 1996, the population was measured again to be 6800. If the population continues to change linearly: Find an equation for the moose population, y,in terms of x, the years since 1994.

    asked on March 27, 2017
  42. Chemistry

    Calculate the volume of 0.05 M NaOH which must be added to 100 cm3 of 0.05 M methanoic acid to obtain a buffer of pH 4.23. (Ka for methanoic acid = 1.77 x 10-4)

    asked on October 11, 2016
  43. math

    Jane gets 1/2 of a gold star each time she helps her teacher clean up the classroom after art class.How many times would Jane need to help her teacher to earn 3 while gold stars?

    asked on February 12, 2015
  44. physics

    A golfer takes two putts to get his ball into the hole once he is on the green. The first putt displaces the ball 3.4 m east, and the second 6.55 m south. What displacement would have been needed to get the ball into the hole on the first putt. answer in

    asked on January 1, 2015
  45. Chemistry

    The reaction: H2C2O4 + CuO + Heat = ? This reaction was produced in organic elemental analysis to identify C and H. So I think CO2 is formed to react with Ca(OH)2 to giving CaCO3. Additionally was formed H2O, so I though H2 or H2O was produced. Is correct

    asked on November 26, 2014
  46. Physics

    This is very confusing to me, I tried a couple of the problems and got them wrong. I would really appreciate the help, and an explanation to study for the exam. Thank you in advance. You are the technical consultant for an action-adventure film in which a

    asked on October 31, 2014
  47. English

    Read the definition. Need Help the result produced from an event Which term is defined? A.cause B.exposition C.effect D.elaboration

    asked on May 13, 2014
  48. math

    suppose the ratio of your income last year to your income this year is 3 to 2. explain what this means. give an example of the dollars earned last year and this year that fits the 3 to 2 ratio.

    asked on May 6, 2014
  49. math

    find the best buy on spaghetti sauce. you have a coupon for $0.75 off brand x and a coupon for $0.25 off brand y. 28 ounces of brand x for $3.89 18 ounces of brand y for $1.89 13 ounces of brand z for $1.29

    asked on May 6, 2014
  50. math

    a boat travels 75 miles in 4 hours. at that rate, how long will it take to travel 120 miles?

    asked on May 6, 2014
  51. math

    Pedro types 240 words in 5 minutes. How many words can he type in 12 minutes? please help.

    asked on May 6, 2014
  52. Health part 2

    The three basic parts of a neuron include ________. A. Soma, dendrites, axon B. Dendrites, cell body, neurotransmitters C. Axon, dendrites, neurotransmitters D. None of the above

    asked on November 5, 2013
  53. english

    Need Help.Please and Thanks. Read each of the following topic sentences, create your own topic sentence that expresses something about your particular opinion on the subject. 5.Plants require water, sunlight, and carbon dioxide to live.

    asked on July 30, 2013
  54. english

    Need Help.Please and Thanks. Read each of the following topic sentences, create your own topic sentence that expresses something about your particular opinion on the subject. Example: Topic sentence provided: When I have free time, I like to relax with a

    asked on July 25, 2013
  55. English

    Write two compositions. To help you get started, you can choose to write about any two of the following four topics: -a job report. -your most unforgettable character. -an analysis of the causes for some phenomenon or event. -the consequences of a new

    asked on July 25, 2013
  56. Physics

    Calculate the vertical distance an object dropped from rest covers in 12 seconds of free fall. (The unit of measure for distance is the meter, written as m.)

    asked on July 10, 2013
  57. Physics

    An airplane of a certain density and shape flies at a constant speed. To do so, it must fly with a certain velocity v0. If the size of the airplane is scaled up in length, width, and height by a factor of two, it can only fly above a new velocity v1. What

    asked on June 1, 2013
  58. Physics

    determine the image distance for an object that is 45.0 cm from a double convex lens having a focal length of 15.0 cm

    asked on May 9, 2013
  59. Science

    The vapor pressure of water at 25 oC is 23.8 torr. Calculate the vapor pressure of a solution prepared by dissolving 35.0 g of urea [(NH2)2CO] in 75.0 g of water at 25 oC.

    asked on February 17, 2013
  60. English

    Combine each pair of sentences that follow into one sentence by creating a subordinate clause that presents information about a verb. Your subordinate clause will tell when, where, how, why, to what extent, or under what conditions the action of the verb

    asked on February 12, 2013
  61. Math

    What is the best estimate for the height of the basketball net ? A - 6 feet B - 6 yards C- 16 feet D - 60 yards Which is the best estimate for the width of a classroom ? A- 4 feet B- 4 yards C- 40 yards D - 400 feet

    asked on February 2, 2013
  62. 5 th grade math

    Gracie read 150 pages of a book. The is 227 pages long. Which equation shows the amount she still needs to read to finish the story? A.150-n=227, B. 227+150=n, C.n-150=227, D.n+150=227

    asked on January 10, 2013
  63. Math

    The warehouse manager on a construction site is trying to figure out a rational way to control inventory and has asked for your help. There are a number of parts that have roughly the same characteristics relative to consumption and size (key when

    asked on February 9, 2012
  64. Physics

    A horizontal force with a magnitude of 3.0 newtons applied to a 7.0 kilogram mass moves the mass horizontally a distance of 2.0 meters. Determine the work done against gravity in moving the mass. What is the formula that you use?

    asked on January 16, 2012
  65. chemistry

    Calculate the equilibrium vale of Pb +2 (aq) in 1.00 L of saturated PbCl2 solution to which 0.250 mole of NaCl has been added. 60.0 ml of 0.0300 M NaCl 60.0mL of 0.0500 M Pb(NO3)2

    asked on April 13, 2011
  66. Grammar

    James spent most of his time with his spouse at the botanic gardens. Is the verb in this phrase just "his" or are there more

    asked on May 11, 2010
  67. Science

    Mass= 48g; volume=24 cm3 . What is the density of this substance ?

    asked on October 24, 2009
  68. Math

    A license plate is to consist of two letters followed by three digits. How many different license plates are possible if the first letter must be a vowel, and repetition of letters is not permitted, but repetition of digits is permitted? The first position

    asked on March 25, 2007
  69. Chemistry

    A sample of InCl3, is known to be contaminated with NaCl. The contaminated sample weighs 2.84g. When the contamintaed sample is treated with excess AgNO3(aq). 574 grams of AgCl(s) are obtained. What is the percentage by mass of InCl3 in the sample? (All I

    asked on January 21, 2007
  70. Physics

    A particle with a charge of -3.2 μC and a mass of 4.0 x 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 58 m/s. The only force acting on the particle is the electric force. What is the potential

    asked on September 26, 2019
  71. arithmetic

    4 3/4 - 1 5/8

    asked on September 24, 2019
  72. math

    jonah's sister is 10 years old. Jonah is 8 years younger than twice his sister age

    asked on October 11, 2018
  73. math

    An example of consecutive odd numbers is 23, 25, 27, and 29. Find the smallest of four consecutive odd numbers with a sum of 160.

    asked on February 27, 2018
  74. English

    20. When enclosing a quotation within a quotation, use A. single quotation marks. B. parentheses. C. dashes D. ellipses. 20 D

    asked on February 10, 2018
  75. English

    2. According to MLA citation style rules, when citing a book by more than one author, the authors' names should A. be listed alphabetically by last name. B. follow the title of the book. C. be listed alphabetically by first name. D. be listed in the order

    asked on February 10, 2018
  76. Chemistry

    How are intermolecular forces different from the forces that bond atoms together into molecules? How are they similar?

    asked on January 12, 2018
  77. Math Algebra 1

    Suppose you and your friends form a band and you want to record a demo. Studio A rents $125 plus $50 an hour Studio B rents for $200 and $25 and hour. Let t=the number of hours and c = cost. Solve/Write and equation to represent the cost of each studio

    asked on December 20, 2017
  78. Algebra

    I need ansewer asap There are a famous irrational nummber calld euler's number,often symbolized with an e. Like pie it never seems to end. The first few digits of e are 2.7182818284. Bettween which two square roots of integers could you find this number?

    asked on August 30, 2017
  79. Chem

    A 0.649 m aqueous solution of a monoprotic acid (HA) freezes at -2.34°C. Find the pKa of this monoprotic acid. Kf of water = 1.86 °C/m

    asked on June 4, 2017
  80. word problem

    Eduardo scored 29 points in his last basketball game. He only scored 2-point field goals and 3-point feild goals. If he made 12 field goals in the game, how many of each type did he make? Let x represent the number of 2-point field goals and y represent

    asked on May 5, 2017
  81. algebra please help

    In certain parts of the ocean the pressure of sea water, in pounds per square foot, at a depth of "d" feet below the surface, is given by P=13+ 4d/9 If a scientific team uses special equipment to measure the pressure under water and finds it to be 401

    asked on May 3, 2017
  82. exponent

    v^-7 x v^7 its saying to write as a positive exponent only?

    asked on April 19, 2017
  83. algebra

    What quantity of 40% acid solution must be mixed with a 10% acid solution to produce 540 ml of a 20% acid solution? I'm not sure how to set this up

    asked on April 11, 2017
  84. another one please help

    {-9x-3y=147 -x+7y=-101 The solution of the system is:

    asked on April 7, 2017
  85. Linear equations

    I keep getting this wrong and can't figure out why {60x+10y=-16 -50x-100y=50 The solution to the system is:

    asked on April 7, 2017
  86. substitution and elimination methods

    Can someone please help explain this, my notes aren't helping me much. Given the following system of linear equations: {x-4y=20 -3x+4y=-12 The solution to the system is: The system is: The equation is: Please help

    asked on April 7, 2017
  87. word problem

    A man has 37 coins in his pocket, all which are dimes and quarters. If the total value of his change is $6.70, how many dimes and how many quarters does he have? Let x represent the number of dimes and y represent the number of quarters. its asking me just

    asked on April 5, 2017
  88. please help

    -9.4(z-8)-4.1=5(z+2.5)-5.9 z= z= (asking for rounded 4 decimal points)

    asked on March 29, 2017
  89. word problem

    In 1994 the moose population in a park was measured to be 6400. By 1996, the population was measured again to be 6800. If the population continues to change linearly: Find an equation for the moose population, y,in terms of x, the years since 1994. Ive

    asked on March 28, 2017
  90. algebra

    A car rental company offers two plans for renting a car. Plan A:40 dollars per day and 20 cents per mile. Plan B: 56.32 dollars per day and 12 cents per mile. If you plan to rent the car for one day, and "m" represents the number of miles driven in that

    asked on March 26, 2017
  91. Functions, please help

    A towns' population, P(x), is given by the function P(x) =2700x + 21000 where x represents the years since 2003. The population will reach 83,400 in ______ The population in 2010 will be ______

    asked on March 23, 2017
  92. algebra

    How would you graph this, i keep entering it only and keep getting it wrong. x and y axis are numbered 1 to 10. please help y+5=-2/3(x-4)

    asked on March 10, 2017
  93. Physics

    An ideal gas in a moveable piston is allowed to reversibly expand by slowly heating at constant pressure. a. Derive the equation for the work done reversibly as a function of the initial and final temperatures.( i have used w=-nrtln(v final/v intial) i

    asked on February 28, 2017
  94. word problem, please

    Joe has scored 84, 89, and 90 on his first three exams in his math class. If the standard 70,80,90 scale is used for grades and the exams are equally weighted, what must he score on the final exam, f, in order to a) Get a C average on exams? f b) Get a B

    asked on February 26, 2017
  95. word problem, Im lost on how to set this up

    Joe has scored 84, 89, and 90 on his first three exams in his math class. If the standard 70,80,90 scale is used for grades and the exams are equally weighted, what must he score on the final exam, f, in order to a) Get a C average on exams? f b) Get a B

    asked on February 26, 2017
  96. word problem, please help

    The local hospital currently has 25 nurses. The hospital administrator sees that they are adding 4 nurses each year to their staff (which included the loss from nurses leaving the hospital). The administrator knows that they need to have at least 41 nurses

    asked on February 26, 2017
  97. algebra, please help

    A cash register contains only five dollar and ten dollar bills. It contains 25 more five dollar bills than ten dollar bills, and the total amount of money in the cash register is $560. How many of each bill is in the cash register?

    asked on February 24, 2017
  98. Chemistry

    A 5.0×101 kg sample of water absorbs 324 kJ of heat. If the water was initially at 22.2 ∘C, what is its final temperature?

    asked on February 20, 2017
  99. physical educatioin

    Your target heart rate _____.

    asked on February 1, 2017
  100. math

    My problem is finding the greatest number of rectangular space that can be cut from 36L×60W

    asked on December 8, 2016


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