Friday

May 6, 2016
Total # Posts: 604

**Chemistry**

Suppose the osmotic pressure of blood at 37 °C is 7.65 atm and you are preparing an intravenous (IV) NaCl solution for a patient. What concentration (in M) of NaCl solution should you prepare so the resulting IV solution is isotonic with blood, if the van’t Hoff ...
*May 2, 2016*

**Art**

Nvm, it's B :D
*May 2, 2016*

**Art**

What message was the designer of this hamburger ad hoping to send with the catchphrase homestyle? This burger will allow you to experience new exotic tastes. This burger will taste as good as one you would make with the family. this burger is your best bet for a quick tasty ...
*May 2, 2016*

**Chemistry**

Suppose the osmotic pressure of blood at 37 °C is 7.65 atm and you are preparing an intravenous (IV) NaCl solution for a patient. What concentration (in M) of NaCl solution should you prepare so the resulting IV solution is isotonic with blood, if the van’t Hoff ...
*May 1, 2016*

**Math**

Is -49 rational or irrational
*April 21, 2016*

**math algebra**

An employee's new salary is $18,165 after getting a 5% raise. What was the salary before the increase in pay?
*April 19, 2016*

**essay**

does March change by Geraldine brooks
*April 17, 2016*

**Social Studies**

3. Which type of judgeship has the least restrictive qualifications? 4. Which types of judgeships are elected statewide and which are elected countywide?
*April 15, 2016*

**math**

What is the minimum value of the expression 2x^2+3y^2+8x-24y+62 for real x and y?
*April 14, 2016*

**English**

Thanks, I guess I should of thought of that, but I was correct :)
*April 13, 2016*

**English**

My answer is A.
*April 13, 2016*

**English**

Which statement from "Zoos: Joys or Jails?" best captures the author's point of view? "At the zoo they are treated with care, but they should be treated with reverence." "Animals behave differently than they would in their natural surroundings.&...
*April 13, 2016*

**Algebra 2**

Use summation notation to write the series 2+4+6+8 for 10 term in each of these images, the lower limit of the summation notation is either n=1, or n=0
*April 13, 2016*

**Algebra 2**

Is there a common ratio for the geometric sequence and what are the missing terms? 2, -4, -16, -36..
*April 13, 2016*

**Math**

Thank you @Reiny
*April 13, 2016*

**Math**

Is there a common ratio for the geometric sequence and what are the missing terms? 2, -4, -16, -36..
*April 13, 2016*

**math**

What are the coordinates of the points where the graphs of f(x)=x^3-x^2+x+1 and g(x)=x^3+x^2+x-1 intersect? Give your answer as a list of points separated by semicolons. (So "(1,-3); (2,3); (5,-7)" is a valid answer format.)
*April 12, 2016*

**Math**

What is the sum of all values of k such that the equation 2x^2-kx+8=0 has two distinct integer solutions? Thank you for your help! :)
*April 11, 2016*

**Math**

The equation y=-4.9t^2+3.5t+5 describes the height (in meters) of a ball thrown upward at 3.5 meters per second from 5 meters above the ground. In how many seconds will the ball hit the ground? Express your answer as a common fraction. Thank you for your help!
*April 11, 2016*

**Math**

A 2009 by 2009 square has its length decreased by 50 and its width increased by 50. By how much does its area change? Thank you for your help!
*April 11, 2016*

**Graphing Quadratics**

Thank you! :)
*April 9, 2016*

**Graphing Quadratics**

For the graph of a certain quadratic y = ax^2 + bx + c, the vertex of the parabola is (3,7) and one of the x-intercepts is (-2,0). What is the x-coordinate of the other x-intercept? Thank you for helping me :D
*April 9, 2016*

**Statistics Math**

There are 3 men sitting in a row facing the same way. Their names are A,B, AND, C. a hat has been placed on their heads without them seeing their own or anyone else's. A can see B and C, B can see only C, C sees none. The game goes as follows: (it can have 1,2,3 quest.) A ...
*April 7, 2016*

**chemistry**

0.5g Al has a lower reactant
*March 31, 2016*

**Science**

Okay! So it's True then, correct?
*March 23, 2016*

**Science**

is it false?
*March 23, 2016*

**Science**

True or False? Energy is measured in Newtons?
*March 23, 2016*

**Social Studies**

Yay! I wasn't sure so I wanted to check. Thank you so much
*March 3, 2016*

**Social Studies**

1. Which of the following has made flooding worse in the Koreas? A. lack of tree covers** B. lack of crops C. too many droughts D. too many dams 2. What is the most important agricultural product in Japan and the Koreas? A. corn B. rice** C. soybeans D. wheat 3.In which of the...
*March 3, 2016*

**Geography**

which adaptation to southeast asia's geography has been most successful? a)skyscrapers allow everyone to have plenty of space to live and work. b) Earthquake safety alerts have saved many lives during earthquakes <---- c) Terrace farming helps people grow all of the ...
*March 2, 2016*

**science**

You don't say rue, I say rue, RUE
*February 29, 2016*

**Maths**

y = 2[cos1/2(f1 - f2)x][cos1/2(f1 + f2)x] let f1 = 16 let f2 = 12 therefore y = 2[cos1/2(16 - 12)x][cos1/2(16 + 12)x] y = 2cos(2x)cos(14x) derive y = 2cos(2x)cos(14x) y' = 2[-2sin(2x)][-14sin(14x)] is all of this correct? Additionally, I am unsure how you would derive the ...
*February 27, 2016*

**Math**

But then again, it's asking for the lowest rate per MINUTE.
*February 23, 2016*

**Chemistry **

to make a sodium chloride solution of the same molarity as household bleach (as determined in question 1) how many grams of salt would be needed for every 100 ml of solution question 1 answer: 0.871 M
*February 7, 2016*

**Math - Algebra I**

Consider the subsets of R defined as follows: An is the interval (0,1/n) for all natural numbers. Show that: U (union) n=1 to infinity of An = (0,1) Here's what I tried as a proof: Show that (0,1) is a subset of U n=1 to infinity An Take an arbitrary real number a in (0,1...
*February 7, 2016*

**English**

What???????
*January 9, 2016*

**English**

What is number 4
*January 9, 2016*

**history**

nvm i understand now
*January 6, 2016*

**history**

no plz gve me ideas
*January 6, 2016*

**history**

What has made the United States so attractive to peoples from other nations over the years? i will like to have a paragraph plz.
*January 6, 2016*

**English**

I need help Can u tell me the meaning MEDIA IS THE NERVOUS SYSTEM OF OUR CULTURE plz tell me what it means
*January 6, 2016*

**history**

she made a school that Black Americans can go to and also, for being an important influence on the president and making a difference in Black Americans' lives.
*January 6, 2016*

**history**

I cant see why she s a hero.
*January 6, 2016*

**history**

How is Mary McLeod Bethune a hero?Please no links and please at least 8-10 sentences.
*January 6, 2016*

**help**

What makes you comfortable at home? give at least 5 sentences What would scare in a foreign land? give at least 5 sentences
*January 5, 2016*

**history**

If i was forced to live far away from my homeland i wouldnt be happy because their taking me away from where i feel most comfortable at.I will also be mad because i wouldnt know where ill live but i need to write three paragraphs
*January 5, 2016*

**history**

If you were forced to live far away from your homeland, how would you react to your situation? Explain your reaction.
*January 5, 2016*

**English**

The class was asked to sit: b. quietly anywhere.
*January 4, 2016*

**Algebra 1**

You are welcome
*January 4, 2016*

**Algebra 1**

cookies = x brownies = y 2x + y = 2.25 y = 2.25 - 2x 4x +3y = 5.75 its $0.50 per cookie and $1.25 per brownie
*January 4, 2016*

**Geography (Ms.Sue ) Help**

The dominant physical-geographic feature is A. ascending plateaus.
*January 4, 2016*

**History**

Do you know how she made the USA a safe place to live
*January 4, 2016*

**History**

How did ruby bridges make the USA a safe place to live,work,and raise a family
*January 4, 2016*

**Math**

Jana is taking pledges for a bike-a-thon fundraiser. Ivan pledged $4.25,plus $1.25 for each mile that Jana bikes. Vicky pledged $5.75,plus &0.75 for each mile that Jana bikes. (Part A)- write expression for the number of dollars Ivan pledged and the number of dollars Vicky ...
*January 3, 2016*

**Math**

Im trying to find out what the value of this equation is: x^37+ x^31 + x^47+ x^26+ x^63+ x^9 + 6. By using the fact that (x + 1/x) ^2 = 3
*January 2, 2016*

**social studies**

y did not give me any answer or no help
*December 14, 2015*

**science **

a trait developed through learning is a ?
*November 20, 2015*

**science**

A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.75 m above the bottom of the chute and with an initial speed of 1.07 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a horizontal surface ...
*November 19, 2015*

**Algebra 2**

Can someone please help me solve this absolute value equation? The equation is: -4|t-2|-9=-37 The thing I don't understand is how to isolate the absolute value (t-2). Do I divide both sides by -4 and then add both sides by -9? In that case I would get |t-2|= 73/4
*October 27, 2015*

**jms**

When solving problems, which of these is performed before the others? A. Multiplication B. Addition C. Exponents D. Subtraction
*October 5, 2015*

**math**

OK thanks so much! :D
*October 5, 2015*

**math**

What is 45/100 in its simplest form? 9/20 And how do I divide fractions on a calculator?!
*October 5, 2015*

**math**

A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the ribbon? 1 2 3 4 Which number is equivalent to 0.45? 1/45 5/11 4/5 1/4 What is 3.56 x 10 *5 in standard notation? 356,000 3,560,000 0.00356 0.0000356 Ms. Johnson's class is having a ...
*October 5, 2015*

**Math help please?! :)**

Ok no wait I get it... I had to read it a few times but I got it! thanks So what about the first one?!
*October 5, 2015*

**Math help please?! :)**

I still kind of don't get it... sorry! :,(
*October 5, 2015*

**math**

Am i correct? 90° ferenhight = 33° celcious
*August 31, 2015*

**Chemistry**

All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I think it is D, but I also think it is c can you please tell me if either of these answers are right thanks
*August 11, 2015*

**Chemistry**

All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I am a little confused. I think it is D, but I'm second guessing myself with C
*August 11, 2015*

**physics**

two charges, -16uC and +4uC, are separated by three meters. a) Where along the line through the charges is the electric field zero? b) What is the force on a 14uC charge place there? uC = microCoulombs for a), would it be 16+ -4? Thank you!
*July 29, 2015*

**physics**

never mind! I got it! =) thanks guys!
*July 5, 2015*

**physics**

A rifle fires a 2.11 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 8.37 10-2 m from its unstrained length. The pellet rises to a maximum height ...
*July 5, 2015*

**physics**

An 0.90 kg object is attached to one end of a spring, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing. With the aid of these data, determine the following values. I got a,b,d,e right. for C, I ...
*July 4, 2015*

**physics**

Damon, help me!!! =(
*July 4, 2015*

**physics**

When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 5.60 10-7 m and a maximum speed of 2.82 10-3 m/s. I don't see how A and a, is given. =/
*July 4, 2015*

**physics**

thank you! =)
*July 4, 2015*

**physics**

A hand exerciser utilizes a coiled spring. A force of 82.0 N is required to compress the string by 0.0191 m. Determine the force needed to compress the spring by 0.0520 m.
*July 4, 2015*

**physics**

i got it! thank you!! =)
*July 2, 2015*

**physics**

please help me!
*July 2, 2015*

**physics**

Physics Genius! please let me! Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 6.12 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.36 kg and r1 = 2.20 m, (2) m2 = 3.92 kg ...
*July 2, 2015*

**physics**

A ladder (ℓL = 7.50 m) of weight WL = 350 N leans against a smooth vertical wall. The term "smooth" means that the wall can exert only a normal force directed perpendicular to the wall and cannot exert a frictional force parallel to it. A firefighter, whose ...
*July 2, 2015*

**physics**

A motorcyclist is traveling along a road and accelerates for 4.45 s to pass another cyclist. The angular acceleration of each wheel is +6.35 rad/s2, and, just after passing, the angular velocity of each wheel is +75.6 rad/s, where the plus signs indicate counterclockwise ...
*June 28, 2015*

**physics**

The drive propeller of a ship starts from rest and accelerates at 2.95 10-3 rad/s2 for 2.05 103 s. For the next 1.90 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
*June 28, 2015*

**physics**

I keep on getting the second part wrong. Can you please tell me where I messed up? Thank you. The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires the gun, she is driven back over the edge and into the sea. ...
*June 26, 2015*

**Biology ( Ms.Sue help)**

They can pass down either an A or B allele, which would mean their child could only be A, B, or AB. If the other parent is type O, the child's blood type will be the allele he/she got from the AB parent. A child can only be O if it inherits an O allele from BOTH parents.
*June 25, 2015*

**physics**

I have no idea. Please help. Thank you. The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x coordinate ...
*June 25, 2015*

**physics**

I have no way to solve this question. help me please The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x...
*June 24, 2015*

**physics**

A projectile of mass 1.000 kg is shot straight up with an initial speed of 23.0 m/s. (a) How high would it go if there were no air resistance? i got 26.99, which is correct (b) If the projectile rises to a maximum height of only 17.8 m, determine the magnitude of the average ...
*June 21, 2015*

**physics**

The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have ...
*June 21, 2015*

**physics**

Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-four times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites. Thank you!
*June 21, 2015*

**physics**

A 30-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 205 J from 435 J. How high does she rise during this interval? Neglect air resistance.
*June 21, 2015*

**physics**

A 54.5-kg skateboarder starts out with a speed of 1.95 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...
*June 21, 2015*

**physics**

A 50-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 154 N. The force P with arrow is parallel to the displacement of the box. The coefficient of kinetic friction is 0.24. Determine the work done on the box by each of the ...
*June 21, 2015*

**math**

less
*June 15, 2015*

**Chemistry**

Determine the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure? I got that DeltaS fus = 12.922J/(k*mol) Delta S Vapour = 93.475J/(K*mol) the only thing I don't get is the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure. How ...
*May 27, 2015*

**Chemistry**

what is the freezing point of an aqueous solution that boils at 102.1 C? Kf=1.86 Kb=0.512 102.1-100.0=2.1 2.1/0.512=4.10 4.10*1.86=7.62 C 7.62 C Is this correct?
*May 22, 2015*

**L A/The Giver**

The answer is C. Jonas escapes and is on the run with Gabriel. Falling action does mean when the story is calm, but it doesn't nessarly mean that. It is the ending of the story... What happened at the end.
*May 20, 2015*

**Ms. Sue PLZ HELP!!!(science)**

??? is correct. I got 100%
*May 12, 2015*

**Calculus **

What is the derivative of tan(1-x)^(1/2)?
*May 6, 2015*

**Language Arts**

These are all wrong! The answers are not correct.
*April 23, 2015*

**Math**

Isn't 51 divisible by 3 and 17?
*April 22, 2015*