RJ

Most popular questions and responses by RJ
  1. Chemistry - Quantitative analysis

    A mixture weighing 7.290 mg contained only cyclohexane, C6H12 (FM 84.159), and oxirane, C2H4O (FM 44.053). When the mixture was analyzed by combustion analysis, 21.999 mg of CO2 (FM 44.010) were produced. Find the weight percent of oxirane in the mixture.

    asked on January 16, 2012
  2. Physics

    Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v_0. Car 1 begins to move at t=0, speeding up with a constant acceleration a_x. Car 2

    asked on May 26, 2009
  3. Texas History

    What geloed expand the system of roads and highways in Texas in the 1920’s A. A gas tax B. A new form of asphalt C. Country government control D. Federal matching funds 2. Which major factor contributed to the population boom of the 1920’s A. The price

    asked on January 31, 2018
  4. Education

    Most of the vocabulary students will acquire throughout a school yearwill be through: a. lessons you have taught throughout the school year; b. classroom reading and self-selected reading; c. specific strategies you've taught throughout the year; d. none

    asked on May 9, 2011
  5. Education

    MS. SUE can you please see if these answers are correct. I would greatly appreciate it. Thank you Which of the following statements best describes the instructional level achieved in an Informal Reading Inventory a. the student is unable to read a text b.

    asked on May 9, 2011
  6. Education

    Theme studies are especially effective for English language learners because: a. they organize information; b. they provide a meaningful learning context; c. they help students with their reading; d. all of the above.

    asked on May 9, 2011
  7. Math

    Chad buy peanuts in 2-pound bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2-pound bags of peanuts should Chad buy so that’s can fill the 5/6 pound bags without having any peanuts left over?

    asked on March 11, 2019
  8. Science

    A plastic block has sides that measure 4 centimeters, 2 centimeters, and 3 centimeters. Its mass is 19.2 grams. Predict whether the block will float in water. Will it float in olive oil?

    asked on April 20, 2010
  9. accounting

    You are provided with the following information for Pavey Inc. for the month ended October 31, 2008. Pavey uses a periodic method for inventory. Date Description Units Unit Cost or Selling Price October 1 Beginning inventory 60 $25 October 9 Purchase 120

    asked on March 15, 2009
  10. Spanish

    Verb Distinction Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentences in Spanish. Be sure the verb is written in correct form to agree with the subject of the sentence and also in the

    asked on March 24, 2013
  11. Education

    Writing process teaching strategies used with first language learners are: a. the same for first and second language writers b. effective for second language learners with some modifications c. effective for first language learners only d. effective for

    asked on May 8, 2011
  12. physics

    What is the magnitude of the apparent weight of a 79 astronaut 5200 from the center of the Earth's Moon in a space vehicle moving at constant velocity?

    asked on November 4, 2010
  13. writing

    Is there someone who could proofread this? Identify the sentence patterns 1. He followed the map to the treasure. S/V/DO 2. Darcy sang the song slowly. S/V/DO 3. They were certain about the time. S/LV/SC 4. I called him a sucker. S/V/DO 5. I found the

    asked on May 21, 2009
  14. Physics

    An arrow is shot at a 30.0° angle with the horizontal. It has a velocity of 49 m/s. (a) How high will the arrow go? m (b) What horizontal distance will it travel? m

    asked on October 12, 2011
  15. Education

    Which of the following statements best describes the instructional level achieved in an Informal Reading Inventory a. the student is unable to read a text b. the student can read a text without much assistance c. the student can read a text with assistance

    asked on May 8, 2011
  16. algebra

    2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $3000 for setup costs and $2.00 to administer each test. e. How many animals should be tested for the average cost to

    asked on August 3, 2010
  17. Grade 3

    A grocery store shelf can hold 4 large boxes of laundry detergent. The store clerk put 25 boxes of laundry on the shelves. What is the least number of shelves needed for the display.

    asked on January 5, 2013
  18. Physics

    A very strong 100kg man is having a tug-of-war with a 1500kg elephant. The coefficient of static friction for both on the ground is 0.9. Find the force that would be needed to move the elephant.

    asked on October 16, 2012
  19. 5th grade - Math

    If the retail tax rate is 5 cents for every 1 dollar you spend, how much tax would you pay for a $0.15 item?

    asked on December 16, 2008
  20. Math- Ideas only

    I need some help on getting ideas for my limits & continuity calculus project! For the limits project: I have to conduct an "interview with a limit" (Q&A format).I have to include factual information like definitions, properties, theorems, etc. I also have

    asked on October 19, 2008
  21. Math

    A triangle whose sides are 5, 12, and 13 inches is similar to a triangle whose longest side is 39 inches. What is the perimeter of the larger triangle?

    asked on January 23, 2011
  22. Science

    • Describe forces resulting from natural phenomena that can have severe consequences on structures in the environment and identify structural features that help overcome some of these forces

    asked on April 8, 2010
  23. Calculus

    How do we integrate 1/lnx.

    asked on March 18, 2008
  24. geometry

    The side of a triangle opposite the right angle is equal to ______. a. one of the other sides a or b b. a+b c. O(a^2+b^2) d. None of the above

    asked on May 12, 2015
  25. Chemistry

    The velocity of an enzyme catalyzed reaction was 10% of Vmax at 2.0 μM substrate concentration. What was the Km in μM? I know Km=1/2Vmax but I do not know if this is the right equation to use or if I am incorporating the known substrate concentration

    asked on August 29, 2015
  26. MATH

    How do you find the base area of a rectangular prism if you know the volume and the height

    asked on April 16, 2014
  27. math

    10 2/9-(-3 1/3)

    asked on November 20, 2013
  28. math

    Rents a van at daily rate of $19.95 plus .39/mile, another company will rent same van for $39.95 plus .29/mile. for what mileage are the costs the same?

    asked on April 11, 2013
  29. math

    25/11 + 2y = 3 Subtract 25/11 from both sides How do subtract this fraction from 3?

    asked on April 6, 2013
  30. math

    2y = 4/3 simplify

    asked on April 6, 2013
  31. foundations of math

    simplify 10(-3a+3b-3c)-8(4a-6b+3c)

    asked on January 19, 2013
  32. algebra

    given the quadratic function f(x) 4x^2 -24x +36 find the value of x such that f(x)=4

    asked on November 7, 2012
  33. programming

    Prompt the user to enter a number of seconds. Return to the user the hours, minutes and seconds.Example: Enter seconds: 1000 1000 seconds = 0 hour, 16 minutes, 40 seconds Hint: use the modulus operator.

    asked on September 25, 2012
  34. Math

    Find the average ordinate for y=x^2 from x=0 to x=6

    asked on August 21, 2012
  35. Math

    Find the value of the derivative of y=sin^2(0.25x^4) at the point (ð,0.17)

    asked on June 18, 2012
  36. Body Structure and Function

    Conductivity is the ability of a neuron to react to stimuli? True or False

    asked on May 19, 2011
  37. Education

    Which of the following would you want to evaluate for a middle school student? a. background knowledge b. word recognition and vocabulary knowledge c. comprehension d. all of the above

    asked on May 9, 2011
  38. Education

    Which of the following would you want to evaluate for a middle school student? a. background knowledge b. word recognition and vocabulary knowledge c. comprehension d. all of the above

    asked on May 8, 2011
  39. MATH

    CALCULATE THE AREA FOR THE FIGURE WITH SIDES 9YDS 6YDS 6YDS 6YDS 3YDS 12YDS

    asked on March 8, 2011
  40. math

    the ? says "find the 10th term of the sequence" 5n+3 Would I do 5(10) +3 and get 53 as the answer? Am I doing this correctly? Thank you for your help.

    asked on January 5, 2009
  41. math

    the ? says "find the next 2 terms of the sequence. 1. 3n+1 2. 4n-2 How do I figure out what the next terms are?

    asked on January 5, 2009
  42. Calculus

    I need some help on getting ideas for my limits & continuity calculus project! For the limits project: I have to conduct an "interview with a limit" (Q&A format).I have to include factual information like definitions, properties, theorems, etc. I also have

    asked on October 19, 2008
  43. Calculus

    How do we integrate xlne^x .

    asked on March 18, 2008
  1. SCIENCE

    I need help

    posted on September 11, 2018
  2. Math help PLEASE!!!!

    Im high as hell rn #420

    posted on February 2, 2018
  3. Science

    Ayeee got 5/5 lmao

    posted on January 31, 2018
  4. Geometry

    15

    posted on October 24, 2017
  5. English Check my answers please

    is anon correct?

    posted on September 28, 2017
  6. math

    418

    posted on July 11, 2017
  7. maths

    180-50-50=80

    posted on January 30, 2017
  8. psych

    idk nga

    posted on October 16, 2016
  9. S.S. help plz

    hes right

    posted on May 23, 2016
  10. Calculus

    A=The area of the horizontal cross section: A(y)=sqrt(3)/4*a^(2) a/(h-y)=s/h --> a=(h-y)(!@#$%^&he height for a tetrahedron is: h= sqrt(2/3)(s) --> sqrt(2/3)(7) = 5.7154 a=(h-y)(s)/(h) -->(5.7154-3)(7)/(5.7154) = 3.3257 A(y)=sqrt(3)/4*a^(2) -->

    posted on February 18, 2016
  11. stats

    .06

    posted on January 12, 2016
  12. Science

    no number 3 is a

    posted on September 17, 2015
  13. math complex number

    yes, and it is 0.6202∠-172.87 in polar form

    posted on September 5, 2015
  14. Chemistry

    20 000 J

    posted on January 25, 2015
  15. Physics

    Did you find an asnwer

    posted on September 20, 2014
  16. soil mechanics

    a. 15.4% b.2038.5 kg/m^3 c.1766.5kg/m^3

    posted on July 21, 2014
  17. Physics

    hey what is the formula for cw,Cc, and Calum plss answer it plss

    posted on March 9, 2014
  18. Math

    move the 15 to one side then move the 2.8 to the other then divide out and solve for x. x = 24

    posted on May 9, 2013
  19. School

    Thanks, Ms. Sue!!

    posted on January 5, 2013
  20. Physics(Please check)

    This is how the solution is reached: Centripital acceleration = radius x (angular speed)^2 The acceleration of A = 2.8 (the acceleration of B) So to set it up we get: Sqrt(L2^2+L1^2) w^2 = 2.8 (L1) w^2 The angular velocities cancel because they are equal.

    posted on November 6, 2012
  21. MATH

    c=(p*5)+24 p is the dependant

    posted on June 18, 2012
  22. Chemistry - Quantitative analysis

    Thank you DrBob222!

    posted on January 16, 2012
  23. Education

    ok thank you for the help.

    posted on May 9, 2011
  24. Education

    I would then say B or even D all of them depending on what they are teaching

    posted on May 9, 2011
  25. Education

    Yes we learn from all those things but there is not all of the above answer?

    posted on May 9, 2011
  26. Education

    I wasn't sure what theme studies are? that's why I asked this question

    posted on May 9, 2011
  27. Education

    Well I thought the first one was A. and the next one was D. all of the above. Is that right?

    posted on May 9, 2011
  28. Math

    7+7

    posted on January 5, 2011
  29. PHYSICS

    4.7 m/s is the correct answer.

    posted on November 4, 2010
  30. 5th grade - Math

    Thank you, I was very confused on how to solve it.

    posted on December 16, 2008
  31. Algebra 1: 8th Grade

    Yes. For example y = -999999x It will be very steep and negative.

    posted on October 22, 2008
  32. geometry

    Axiom

    posted on October 22, 2008
  33. math

    14-9x = -80-8x Switch sides. x=94

    posted on October 19, 2008
  34. 12th AP Calculus

    First you do powers. 3(csc(x))^1/2 Then trig. The final: -3(csc(x))^1/2 *(csc(x)cot(x))

    posted on October 19, 2008
  35. Biology

    One - monosaccharides. Starch is a carbohydrate made of glucose.

    posted on October 19, 2008
  36. English Essay Thesis

    I think it's fine. But make sure you can support it in your body paragraphs, otherwise having such a complicated thesis is worthless.

    posted on October 19, 2008
  37. math

    if you are 25 and you get 25 dollars every 2 wks and at the end of the month 10% is added like interest how much would you get if you stopped at 65 years old.

    posted on September 23, 2008
  38. Social Studies

    how can i find out what day of the week December 19,1777 was

    posted on May 19, 2008