# carlos

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

2. ## chemistry

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

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)

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 ?

5. ## Nouns

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

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??

7. ## Grammar

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

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,

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.

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?

11. ## Math - Help!

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

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

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

14. ## statistics

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

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.

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??

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?

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

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

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.

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

22. ## Health part 2

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

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

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?

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.

26. ## Chemisrty

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

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?

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

29. ## science

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

30. ## government

what is a good example of cloture?

31. ## geometry

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

32. ## languaje art

i have some sentences i need to separates subjects and predicates

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??

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?

35. ## Grammar

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

36. ## psychology

List of Personality Traits

37. ## math

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

38. ## social studies

countries seek economic development because it

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?

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?

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.

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)

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?

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

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

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

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

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.

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

50. ## math

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

51. ## math

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

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

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.

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

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

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.)

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

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

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.

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

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

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

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

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?

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

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

67. ## Science

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

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

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

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

71. ## arithmetic

4 3/4 - 1 5/8

72. ## math

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

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.

74. ## English

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

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

76. ## Chemistry

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

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

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?

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

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

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

82. ## exponent

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

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

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

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:

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

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

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

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

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

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 ______

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)

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

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

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

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

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?

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?