RJ
Most popular questions and responses by RJ
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 
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 
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 
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 selfselected reading; c. specific strategies you've taught throughout the year; d. none
asked on May 9, 2011 
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 
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 
Math
Chad buy peanuts in 2pound bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2pound 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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
Physics
A very strong 100kg man is having a tugofwar 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 
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 
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 
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 
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 
Calculus
How do we integrate 1/lnx.
asked on March 18, 2008 
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 
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 
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 
math
10 2/9(3 1/3)
asked on November 20, 2013 
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 
math
25/11 + 2y = 3 Subtract 25/11 from both sides How do subtract this fraction from 3?
asked on April 6, 2013 
math
2y = 4/3 simplify
asked on April 6, 2013 
foundations of math
simplify 10(3a+3b3c)8(4a6b+3c)
asked on January 19, 2013 
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 
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 
Math
Find the average ordinate for y=x^2 from x=0 to x=6
asked on August 21, 2012 
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 
Body Structure and Function
Conductivity is the ability of a neuron to react to stimuli? True or False
asked on May 19, 2011 
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 
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 
MATH
CALCULATE THE AREA FOR THE FIGURE WITH SIDES 9YDS 6YDS 6YDS 6YDS 3YDS 12YDS
asked on March 8, 2011 
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 
math
the ? says "find the next 2 terms of the sequence. 1. 3n+1 2. 4n2 How do I figure out what the next terms are?
asked on January 5, 2009 
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 
Calculus
How do we integrate xlne^x .
asked on March 18, 2008

SCIENCE
I need help
posted on September 11, 2018 
Math help PLEASE!!!!
Im high as hell rn #420
posted on February 2, 2018 
Science
Ayeee got 5/5 lmao
posted on January 31, 2018 
Geometry
15
posted on October 24, 2017 
English Check my answers please
is anon correct?
posted on September 28, 2017 
math
418
posted on July 11, 2017 
maths
1805050=80
posted on January 30, 2017 
psych
idk nga
posted on October 16, 2016 
S.S. help plz
hes right
posted on May 23, 2016 
Calculus
A=The area of the horizontal cross section: A(y)=sqrt(3)/4*a^(2) a/(hy)=s/h > a=(hy)(!@#$%^&he height for a tetrahedron is: h= sqrt(2/3)(s) > sqrt(2/3)(7) = 5.7154 a=(hy)(s)/(h) >(5.71543)(7)/(5.7154) = 3.3257 A(y)=sqrt(3)/4*a^(2) >
posted on February 18, 2016 
stats
.06
posted on January 12, 2016 
Science
no number 3 is a
posted on September 17, 2015 
math complex number
yes, and it is 0.6202∠172.87 in polar form
posted on September 5, 2015 
Chemistry
20 000 J
posted on January 25, 2015 
Physics
Did you find an asnwer
posted on September 20, 2014 
soil mechanics
a. 15.4% b.2038.5 kg/m^3 c.1766.5kg/m^3
posted on July 21, 2014 
Physics
hey what is the formula for cw,Cc, and Calum plss answer it plss
posted on March 9, 2014 
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 
School
Thanks, Ms. Sue!!
posted on January 5, 2013 
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 
MATH
c=(p*5)+24 p is the dependant
posted on June 18, 2012 
Chemistry  Quantitative analysis
Thank you DrBob222!
posted on January 16, 2012 
Education
ok thank you for the help.
posted on May 9, 2011 
Education
I would then say B or even D all of them depending on what they are teaching
posted on May 9, 2011 
Education
Yes we learn from all those things but there is not all of the above answer?
posted on May 9, 2011 
Education
I wasn't sure what theme studies are? that's why I asked this question
posted on May 9, 2011 
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 
Math
7+7
posted on January 5, 2011 
PHYSICS
4.7 m/s is the correct answer.
posted on November 4, 2010 
5th grade  Math
Thank you, I was very confused on how to solve it.
posted on December 16, 2008 
Algebra 1: 8th Grade
Yes. For example y = 999999x It will be very steep and negative.
posted on October 22, 2008 
geometry
Axiom
posted on October 22, 2008 
math
149x = 808x Switch sides. x=94
posted on October 19, 2008 
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 
Biology
One  monosaccharides. Starch is a carbohydrate made of glucose.
posted on October 19, 2008 
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 
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 
Social Studies
how can i find out what day of the week December 19,1777 was
posted on May 19, 2008