# 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