Saturday

August 27, 2016
Total # Posts: 337

**math**

Part 1: Write two conditional statements for which the converse is true. 1. Statement: 2. Converse: 3. Statement: 4. Converse: Part 2: Write two conditional statements for which the converse is false. 5. Statement: 6. Converse: 7. Statement: 8. Converse:
*May 12, 2013*

**math**

simplify sin(540-2x) this is to do with trig
*May 10, 2013*

**Trig**

Verify the identity. (secx + tanx)/(secx - tanx) = (1 + 2sinx + sin(^2)x)/cos(^2)x
*May 9, 2013*

**maths**

find the general solution for the equation: sin2x+ square root 3cosx =0
*May 9, 2013*

**ENGLISH ELA :D**

So, like, what you like, have to like, do is like, look back in like, whatever reference you, like, have. If you like, have a play sheet or something look back in, like, there. If you don't, like, watch the play or something..I dunno how to, like, help you.
*May 5, 2013*

**english**

a dolls house questions: what religious themes do you see in the play? What is the significance of Nora’s words, “to hell and be damned” in Act I? Was Nora wrong to have acquired the money for the trip to save Torvald’s health? What elements of Nora and ...
*May 5, 2013*

**Algebra**

The stem-and-leaf plot represents the average monthly high temperatures in Tampa, Florida. What is the first quartile (Q1) of the temperatures? Round to the nearest tenth. Stem leaf 6 9 7 1267 8 14799 9 00
*May 2, 2013*

**Math**

Does this set of data have any outliers? Data: 1, 2, 2, 4, 6, 6, 7, 8, 9, 10, 12, 13, 16, 16, 18. no or yes
*May 2, 2013*

**Algebra**

The data below represents the average score per game of the top 40 NBA players, rounded to the nearest whole number. Find the minimum, Q1, median, Q3, maximum for the data. Stem l leaf 1 l 55667777888888899 2 l 00000011123445566679 3 l 135
*May 2, 2013*

**AP Chemistry**

yea you're right!
*April 30, 2013*

**english**

Just took this test and got 100% the answers are, rhetorical criticism and structure
*March 30, 2013*

**College Statistics**

A random variable X has a Gamma distribution with (alpha = a, beta = b). Show that P(X > 2ab) < (2/e)^a. hint: X > c is equivalent to e^Xt > e^ct
*March 30, 2013*

**Chemistry**

How many liters of hydrogen gas can be produced at 300.0K and 1.55atm if 20.0g of sodium metal is reacted with water?
*December 6, 2012*

**Chemistry**

How many liters of hydrogen gas can be produced at 300.0K and 1.55atm if 20.0g of sodium metal is reacted with water?
*December 6, 2012*

**science**

I just wish that people could post a helpful answer, Translational motion is movement of an object without a change in its orientation relative to a fixed point, as opposed to rotational motion, in which the object is turning about an axis. With that in mind a leaf blowing ...
*November 29, 2012*

**english**

Its actually B A B A
*November 7, 2012*

**math**

Is a package of 8 hot dog buns proportional to a package of 10 hot dog franks?
*October 28, 2012*

**Physics**

A ball of moist clay falls 10.4 m to the ground. It is in contact with the ground for 20.5 ms before stopping. (a) What is the average acceleration of the clay during the time it is in contact with the ground? (Treat the ball as a particle.) m/s2 (b) Is the average ...
*October 21, 2012*

**math 7th grade**

hint: use pemdas
*October 18, 2012*

**math 7th grade**

what is 234(2-1+1092-924+18) ?
*October 18, 2012*

**physics**

A 16000 kg sailboat experiences an eastward force of 12400 N due to tide pushing its hull while the wind pushes the sails with a force of 51900 N directed toward the northwest (45 westward of North or 45 northward ofWest). What is the magnitude of the resultant ac- ...
*October 17, 2012*

**3rd grade**

the answer is precisley 9 hands:)
*October 16, 2012*

**Math**

An invoice of $12,000 is dated April 5. The terms 5/10,n/30 are offered. Find the amount due if the discount is earned. Show your work.
*October 12, 2012*

**chemistry**

If i have .0030M BaSO4 how do I calculate the moles of sulfate?
*October 10, 2012*

**Math**

160 hours per hour
*October 3, 2012*

**physics**

a plane needs to fly at 40 degrees n of e when flying through a wind that blows 80 mph @ 70 degrees S of E. If the plane goes 320 mph in still air in what direction should the plane aim?
*September 27, 2012*

**Physics**

A stone is dropped from the top of a well. If the well is 23.1 meters deep, how long with the stone take to reach the bottom?
*September 16, 2012*

**Physics**

An object with a mass of 3kg is dropped from 56.3 meters. How far above the ground is it's kinetic energy 1073J?
*September 16, 2012*

**physics**

A metal sphere of radius 5.00 cm is initially uncharged. How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.59 105 N/C at a point 7.98 cm from the center of the sphere?
*September 12, 2012*

**AP Chem**

how many milliliters of 0.10 M HCl must be added to 50.0 mL of 0.40 HCl to give a final solution that has a molarity of 0.25 M?
*August 21, 2012*

**Math**

4% x 60month x 2000= 4800 I am really struggling with this problem.
*May 29, 2012*

**Math**

What would the rate of return be on an Individual Retirement Account with a contribution of $2000.00, at 4% Interest rate, for 5 years?
*May 29, 2012*

**math algebra **

what are 4 consecutive integers whos sum is -2
*May 21, 2012*

**English (Mrs,Sue!!)**

Mrs.Sue, I wrote a paper on research proposal. Now, my teacher is asking us to write the steps on how we wrtoe the paper. Can you reword these questions for me? thank you so much!! "What techniques did you use as you thought through the issue? " "What prewriting...
*May 3, 2012*

**Ms.Susy Please Help With Time!!!!!!**

the answer is 5:30 hours
*April 23, 2012*

**physics**

+y| / F | / | / | / /a_ _ _ _ _ +x 40N This is pretty much what the picture looks like. Your answer was incorrect!
*April 20, 2012*

**physics**

"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)
*April 20, 2012*

**physics**

"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)
*April 20, 2012*

**Math**

Is my answer correct then??
*April 12, 2012*

**Math**

Thank you!!
*March 15, 2012*

**Math**

R varies jointly as S and the square of T. If R is 32.4 when S=0.2 and T=9, find R when S=0.5 and T=5. I believe the answer is R=25, could someone check this for me?
*March 15, 2012*

**Math**

for his new room Daren will need 154 feet sq of wall to wall to cover of his new square room. what is the length of each wall of his room?
*March 13, 2012*

**statistics**

How do you find standard deviation?
*February 27, 2012*

**Physics**

a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic friction acting on the box b. determine the ...
*February 25, 2012*

**Chemistry**

Yes it does. Thanks.
*February 10, 2012*

**Chemistry**

my work: 243.228= 18.0153 * 4.184* (Tfinal-Tinitial) 1825.228=75.376Tfinal Tfinal= 24.2149 I got this answer and it is incorrect. can u please help me? and confirm the right answer. thanks :)
*February 10, 2012*

**Chemistry**

I have this same question on my hw and it is marking me wrong. Can someone please say what the right answer is or confirm it?
*February 10, 2012*

**Chemistry**

I still don't get how to do it. I did what you said and it keeps marking me incorrect :(
*February 10, 2012*

**Chemistry**

No this is a different person. Thanks I got it.
*February 10, 2012*

**Chemistry**

At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A (g) + B(s) --> 3C(g) 2A (g) +2B (g) -->5C(g) A(g)+ B(g) --> C(g) A (s) +2B(g)--> C(g)
*February 10, 2012*

**Chemistry**

For a 5.0 g sample of CoCl3·9H2O, what weight of water (in grams) will be lost if the sample is heated to constant weight (all water driven off)?
*February 6, 2012*

**Film Literature**

What was the first comedy movie ever made?
*January 27, 2012*

**math**

at a local community college, it costs 150 to enroll in a morning section of an algebra course. Supopose that the varible n stands for the number of students who enroll. then 150n stands for the total amount of money collected for this course. how much is collected if 41 ...
*January 26, 2012*

**physics**

I dont know
*January 22, 2012*

**9th gradae physical science**

teh density of copper is 8.92 g/cm3. If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be?
*January 20, 2012*

**Intro to Psychology 1**

A behaviorist is asked to evaluate five students in the second grade who exhibt impluse control problems.The behaviorist decides it is best initially to study them in the classroom without interferring with the behavior.This behaviorist is conducting _____ research. A.) survey...
*December 23, 2011*

**Biology**

ok thank you!
*December 6, 2011*

**Biology**

yes i had read this previously, i guess im just not sure how to apply this to the question. any suggestions?
*December 6, 2011*

**Biology**

can anyone tell me a little about MacArthur and Wilson's theory of island biogeography? I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of ...
*December 6, 2011*

**biology**

If im thinking correctly Aristotle paired things with similar characteristics. I would do some quick research on him before answering but I would go with D.
*December 6, 2011*

**math**

number of people who hear a rumor after t hours is N(t) = 2000/ 1 + 499e^-0.3t How long will it take for 200 people to hear the rumor?
*December 3, 2011*

**Physics**

Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is the machine using in...
*December 2, 2011*

**Physics**

Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be ...
*December 2, 2011*

**Physics**

An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa. (a) Find the work done on the gas. Answer is in J (b) Find the thermal energy transfer Q. Answer is in J
*December 2, 2011*

**Math**

The answer is no solution, unless ur teacher says it has one. I had ethe same problem and its no solution. Hope this helps
*December 1, 2011*

**Finance**

For the first time in a very long time (perhaps ever!), the concept of financial risk and risk management has become a topic of concern at Presidential press conferences. Such concern has centered on esoteric financial products such as derivatives that are used to manage risk...
*November 14, 2011*

**science**

what change of state happens when a gas loses energy?
*November 4, 2011*

**bio**

what is the cisternal maturation hypothesis for Golgi apparatus function?
*November 2, 2011*

**bio**

how does the explosive polymerization of G-actin propels L. monocytogenes through the cytoplasm?
*November 2, 2011*

**bio**

what is a mechanism for how EB1 can mediate the extension of ER cisternae along microtubules?
*November 2, 2011*

**Spanish- SraJMcGin please recheck**

Thank you
*November 2, 2011*

**Spanish- SraJMcGin please recheck**

I think it does-so I was okay when I used mejor que in my sentence? I wasn't suppose to change anything??
*November 2, 2011*

**Spanish- SraJMcGin please recheck**

I'm not sure what you meant by correcting this sentence--Thank you for any further explanation you can give-- 3. Tocar el piano es______tocar la guitarra. (+bueno) Tocar el piano es mejor que tocar la guitarra. You said in an earlier post: mejor que(irregular - or ...
*November 2, 2011*

**Spanish**

For number ten and eleven above I think I put the wrong answer. To place verb in present progressive it would be: 10.Yo escucho it would be Yo estoy escuchando, correct? 11. nosotros hablamos would be Nosotros estamos hablando, correct? Thank you
*November 2, 2011*

**Spanish**

Please check these- Fill in comarative form for the first three: 1.Surfear es ____ interesante (cazar.) Surfear es más divertido que cazar. 2.El fútbol es ____ el golf.(interesante) El fútbol es más interesante que el golf. 3. Tocar el piano ...
*November 2, 2011*

**Algebra-Please check**

For the ellipse (x-2)^2/49 + (y+1)^2/25=1 List center: (2,-1) the foci: -(sqrt 74) AND +(SQRT 74,0) Major axis: x=2 Minor axis: y= -1 Vertices: (7,0) (-7,0) (0,5) (0,-5) Is this correct?
*November 1, 2011*

**Physics**

A ball has a diameter of 3.70 cm and average density of 0.0841 g/cm3. What force is required to hold it completely submerged under water? I need to find the magnitude in N Thank you!
*October 27, 2011*

**Physics**

(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an underwater vehicle at ...
*October 27, 2011*

**physics**

Four objects are held in position at the corners of a rectangle by light rods . m1 2.90(kg) m2 1.90(kg) m3 4.50(kg) m41.90 (kg) (a) Find the moment of inertia of the system about the x-axis. Answer in kg · m2 (b) Find the moment of inertia of the system about the y-axis...
*October 26, 2011*

**Economics**

can you help me brain storm? I want some points on why Per Capita GDP might be a bad way to compare wellbeing across countries.
*October 23, 2011*

**Chemistry 105**

(729-Pw) =?
*October 23, 2011*

**history**

I don't understand what is meant when a question asks you for the "term" Historical significance. for example:john maynard keynes. I know everything about him and his economic ideas but, if i was asked to write a short paragraph of his historical significance i ...
*October 22, 2011*

**critical thinking**

technical jargon used by people in the same field can be an acceptable used of language. true of false.
*October 22, 2011*

**Physics***

A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and...
*October 20, 2011*

**Physics***

A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 575 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5,000 rev/min. (a) Find the kinetic ...
*October 20, 2011*

**Physics***

A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 70.0-gram mass is attached at the 16.0-cm mark, the fulcrum must be moved to the 39.2-cm mark for balance. What is the mass of the meter stick? Answer in grams
*October 20, 2011*

**social studies**

name two helpful developments in georgia and the rest of the country that occurred after the Revolutionary War
*October 20, 2011*

**Physics**

The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.70 m and 0.99 m, respectively. The respective rotational speeds are 454 rev/min and 4,147 rev/min. Calculate the speeds of the tips of both rotors. main rotor =180.6625215m/s tail rotor ______m/...
*October 10, 2011*

**Physics**

A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.1x10^4 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this period. rad
*October 7, 2011*

**Physics**

A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 7.0-kg object at the origin of the coordinate system, a 8.0-kg object at (0, 2.0), and a 17.0-kg object at (4.0, 0). Find the resultant ...
*October 6, 2011*

**Physics**

A satellite has a mass of 99 kg and is located at 1.97 106 m above the surface of Earth. (a) What is the potential energy associated with the satellite at this location? Answer in J (b) What is the magnitude of the gravitational force on the satellite? Answer in N
*October 6, 2011*

**Physics**

A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10−16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 10−11 N. At how many revolutions per second should the centrifuge be ...
*October 6, 2011*

**Physics**

A 54.9-kg ice skater is moving at 4.09 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.803 m around the pole. (a) Determine the force exerted by the horizontal rope on her arms. Answer in N (b) ...
*October 6, 2011*

**Physics**

A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.1 104 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this period. rad
*October 6, 2011*

**critical thinking (just explain the question plz)**

can u explain this question for me or rephrase it because i dont understand what it means by fact-based subject matter or value-based subject matter. Does your hypothesis test fact-based subject matter or value-based subject matter? Briefly explain.?
*October 5, 2011*

**Physics**

A 2.4 kg object attached to a horizontal string moves with constant speed in a circle of radius R on a frictionless horizontal surface. The kinetic energy of the object is 95 J and the tension in the string is 315 N. Find R.
*October 4, 2011*

**Physics**

A 79.0-kg fullback running east with a speed of 4.00 m/s is tackled by a 93.0-kg opponent running north with a speed of 3.00 m/s. (a) Why does the tackle constitute a perfectly inelastic collision? (b) Calculate the velocity of the players immediately after the tackle. ...
*October 4, 2011*

**Physics**

Question Part Points Submissions Used A 45.0-kg girl is standing on a 160-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.44 m/s to the right...
*October 4, 2011*

**Physics**

The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last? s (b) What is the magnitude of the average force on the ...
*October 4, 2011*

**Physics**

A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0037 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 2.7 102 ft/s, find the average force ...
*October 4, 2011*