Sunday
February 14, 2016

Posts by Carl

Total # Posts: 268

Algebra
We came up with the following example: 24+[5(z)] ---------- x-2-y 24+10=34 ---------- 4-2=2 2-1=1 x=34 This would be for a 4 year old med. size dog. In other words... 24+10=34 ----------- 1 34/1=34 x=34 Not sure if that's the proper way to write the equation but I'd ...
December 22, 2015

trigo
A plane in calm weather flies east at 20 K.P.H. A 45 K.P.H wind blows from the north. Find the direction and speed required to keep the plane in it's original course and speed.
November 21, 2015

calculus
You have been hired by a farmer to design a fenced-in rectangular enclosure for emus. The emus will require 720 square feet of area in which to roam, and the fence will cost 20 dollars per foot. The rectangular area will adjoin an existing wall, so a fence is only needed on ...
November 17, 2015

Batteries
3 Sn^2+ (aq) + 2 Al (s) <--> 2 Al3+(aq) + 3 Sn(s). What is the voltage for this cell? What is the voltage for the cell if the Sn2+(aq) is [.15] and Al3+(aq) is [1.80]? Using proper line notation, describe the cell described in the question.
November 9, 2015

Match
Simplify: 9/40 divided by 1/5 times 3/8
October 6, 2015

English
Thanks for not helping
September 23, 2015

English
individualism I'm always right.
September 23, 2015

English
Which of the following was valued during the Romantic period? logic individualism balance restraint
September 23, 2015

Chemistry
What would be the new temperature in Celsius of a sample of methane if 205 ml at 725 torr and 75.0 degrees C is allowed to change to 907 ml and 827 torr? I used P1V1/T1=P2V2/T2 Plugged in the numbers (205)(725)/(348.15K)=(907)(827)/T2 When I solved for T2 I got 1.757*10^3, and...
September 9, 2015

math
i am a 5 digit number greater than 60,000 but less than 70,000 my ones digit 1 less than my 10,000 digit all my other digits are the same the sum of my digit are 23. What is my number?
June 22, 2015

Chemistry
How much water must be added to make 500 ml of 12.0 M HCl to 1.0 M HCl (500mL• 12M) / 1.0M =6000m Is this correct?
May 10, 2015

Chemistry
How much water must be added to make 500 ml of 12.0 M HCl to 1.0 M HCl (500mL• 12M) / 1.0M =6000m Is this correct?
May 8, 2015

Math
Thanks!
April 23, 2015

Math
Can someone please explain to me how to solve this: Simplify 6P2. A) 30 B) 15 C) 12 D) 720
April 23, 2015

chemistry
ΔG= (2x53 + -114) - (2x162)= -332 K=e^(-332/(.008314x298)= 6.36 e-59 I have also tried using 8.314 as the value for R
March 15, 2015

chemistry
The power of the equation ΔG° = –RT ln(K) is that K can be determined from tabulated values of ΔG°f. Use the tabulated values of the Gibb's energy to determine K for the reaction, 2AB(l) ↔ 2A(g) + B2(g), at 298K. (R=8.314 J/K mol or R=0.008314 ...
March 15, 2015

Chemistry
A pH = 7.6 buffer is needed in the lab. This buffer is made by first dissolving 17.42 g K2HPO4 in 600 mL of water. What is the pH of this salt solution? This solution of course will be too basic becuase we only have the base of the buffer present. What must the value of the ...
March 12, 2015

Chemistry
Calculate the pH of the the solution that results from titrating 50 mL of 0.6 M NaOCl(aq) with 0.3 M HBr At 0.00 mL of HBr: At 70 mL of HBr: At 100 mL HBr: At 120 mL of HBr
March 12, 2015

Chemistry
Calculate the pH of the the solution that results from titrating 50 mL of 0.6 M HCN(aq) with 0.2 M NaOH At 0.00 mL of NaOH At 85 mL of NaOH. At 150 mL NaOH. At 160 mL of NaOH
March 12, 2015

Chemistry
What is the pH of a 150 mL buffer solution containing 0.5 M NaH2PO4 with 0.5 M K2HPO4? Determine the new pH of the solution upon the addition of 10 mL of 1.2 M strong acid to the 150 mL buffer solution above.
March 12, 2015

Chemistry
what is the pH of a solution created by adding 15.5 g of KClO to 228 mL of 1.08 M HClO(aq).?
March 12, 2015

Algebra
Factor: -3x^2 - 18x + 15
February 15, 2015

SPANISH
Thank you so much :)
February 3, 2015

SPANISH
Thankyou
February 3, 2015

SPANISH
This question tells us to answer if the children bahaved good or bad from the paragraph below. Todos los niños le regalaron a Ana muchas cosas fantásticas. Había muñecas, juguetes, animales de peluche … y más cosas. Susana le regal&...
February 3, 2015

Analytic Geometry
Find the bisectors of the interior angles of the triangle whose sides are the line 7x+y-7=0, x+y+1=0 and x+7y-4=0.
December 14, 2014

Middle School Math
My home work problem is 3g+5=17 my answer is -20. A I correct.
December 11, 2014

math
a variable y varies directly as the square root of a varies x,and equals 6 when x=4 find y when x=25
November 20, 2014

Physics
A glass block has a refractive index of 1.49. What is the critical angle for the block?
November 18, 2014

Precalculus (Telescoping Series)
Evaluate 3/(1! +2! +3!) + 4/(2! +3! +4!) + 5/(3! +4! +5!) + ... + 2001/(1991! +2000! +2001!).
November 15, 2014

Physics
Two objects are moving in the xy-plane. No external forces are acting on the objects. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (-1.8m/s)i + (2.7m/s)j. Some time later, object A is...
November 9, 2014

Physics
Two objects are moving in the xy-plane. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (-1.8m/s)i + (2.7m/s)j. What is the total momentum of the system? (should I use dot product here?)
November 9, 2014

math
the width of a rectangle is 4cm and the length is 8 cm if both the width and the length are increased by equal measures, the area of the rectangle is increased by 64 cm 2. find the length and width of the larger rectangle
October 26, 2014

College Algebra
Solve for x in terms of the other symbols: rsx^2 + s^2 x + rtx + st = 0
October 11, 2014

Geometry
A swimming pool is to be constructed in the space of partially overlapping identical circles. Each of the circles has a radius of 9 m, and each passes through the center of the other. Find the area of the swimming pool.
September 28, 2014

Math
A cube has a surface area of 24 ft2. What is the length of one edge of the cube? Show Work Please.
June 1, 2014

English II B
Ok thanks.
April 3, 2014

English II B
It don't say, but are you saying it's 4.
April 3, 2014

English II B
I think its either 2 or 1.
April 3, 2014

English II B
A student has completed a freewriting exercise. The result is a paragraph exploring the general theme of war in a literary text. What is the next step in the writing process? 1.gathering details 2.beginning an outline 3.writing an introduction 4.narrowing the topic Need help ...
April 3, 2014

English II B
Thanks, but me and mike are brothers we are working on the same paper.
April 3, 2014

English II B
What is the term for a magazine that is published on the computer? 1. computerized slide show 2. online publication 3. electronic portfolio 4. electronic bulletin board
April 3, 2014

English II B
Need Help Please. A student is thinking about different forums for publishing an editorial. Which of the following would be appropriate? 1.a dramatic reading 2.an anthology 3.a poetry contest 4.a school newspaper
April 3, 2014

math algebra
a square parking lot has a surface area of (w^4-2w^2x+x^2) square feet. Factor this trinomial to find the length of one side in feet.
March 19, 2014

CALCULUS ECONOMICS
How did you get to that number?I have 5000 (wrong solution) and I can't figure out q7 because i don't know the right value for q.opt (q.eq=625?)
March 13, 2014

Math
Jared's football team lost a total of 12 yards during 4 plays of the game. They lost the same number of yards during each of the plays. What is an integer that can represent the number of yards lost during each play?
March 11, 2014

Physics
A 2050 kg truck is traveling east through an intersection at 2.3 m/s when it is hit simultaneously from the side and the rear. (Some people have all the luck!) One car is a 1200 kg compact traveling north at 4.5 m/s. The other is a 1600 kg midsize traveling east at 10 m/s. The...
March 9, 2014

Chemistry
120.0g of ice is melted, how much energy is absorbed?
February 21, 2014

programming logic
The No Interest Credit Company provides zero-interest loans to customers. (It makes a profi t by selling advertising space in its monthly statements and selling its customer lists.) Design an application that gets customer account data that includes an account number, customer...
December 5, 2013

3. A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a region of magnetic field...
November 23, 2013

magnetism help
A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a region of magnetic field. ...
November 22, 2013

Physics electric potential energy difference
A current loop with radius 20 cm and current 2 A is in a uniform magnetic field of 0.5 T. Considering all possible orientations of the loop relative to the field, what is the largest potential energy difference (in Joules) you can find between two orientations?
November 22, 2013

Physics
Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?
November 19, 2013

Phyics
Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?
November 19, 2013

Physics
A container holds 1.3 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 6.6x10-3 kg bullet with a speed of 670 m/s. What is the Kelvin temperature of the gas?
November 19, 2013

math
2(w+18+W)=2(w+18−6+w+3) perimeter is 126 my teacher ask to get the value of W
November 11, 2013

math
2(w+18+W)=2(w+18−6+w+3) perimeter is 126 whats w = to?
November 11, 2013

algebra
2(w+18+W)=2(w+18−6+w+3)
November 11, 2013

ENGLISH
Book april morning Describe both sides of the Boiled pudding controversy in town. What does this reveal about the town?
October 24, 2013

engineering
What is the change in enthalpy for an isothermal, isentropic compression of an ideal gas from 2 atm to 12 atm?
October 23, 2013

chemistry
What is the change in enthalpy for an isothermal, isentropic compression of an ideal gas from 2 atm to 12 atm?
October 23, 2013

History
How did American debates about foreign policy in the 1790s reflect the beliefs of the political parties? i think it tells poltical parties what to change ,but i need more info.
October 22, 2013

Us history
Define unicameral legislature and bicameral legislature. Which type of legislature did must states have? I cant find what type of legislature did the states have
October 13, 2013

us history
why did madison believe that faction would not be good
October 9, 2013

math
in triangle ABC, AB=6, BC=12 AND AC=X. Which of the following cannot be a value of x? a. 6 b.7 c.8 d.9 e.10
September 21, 2013

math
The average of 20,70 and x is 40. If the average of 20,70, x and y is 50, then y= a. 30 b. 60 c. 70 d. 80 e. 100
September 21, 2013

us history
Should the United States take action in Syria, why or why not? I believe that the us shouldnt because the us
September 9, 2013

Statistics
Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.34, P(B) = 0.41, P(A | B) = 0.2
June 8, 2013

Math
If you can write 5 pages each hour, at that rate, how many min. would it take you to write 2?
May 13, 2013

Calculus (math)
A) 12,000 ft lb B) 9,600 ft lb C) 2,690 ft lb D) 14,500 ft lb
April 26, 2013

Calculus (math)
A rescue cable attached to a helicopter weighs 2 lb/ft. A 190 lb man grabs the end of the rope and is pulled from the ocean into the helicopter. How much work is done by lifting the man if the helicopter is 50 ft above to water.
April 26, 2013

Statistics
how can I decide to reject or fail to reject the following null hypothesis? let a= 0.05,data; p=0.69, n=32, test statistic z= 0.09095 H(0);p=0.68 H(1)p>0.68
April 19, 2013

Statistics
how can I determine weather to reject or fail to reject the following nul hypothosis: let a= o.01, data: s= 3.1, n=55 and H(0) st dev 2.8 and H(1)< 2.8
April 19, 2013

chem
ln[80/100]=-k[84.2] -2.2=-k[84.2] -2.2/-84.2=k k=0.0261min^-1
April 14, 2013

Calc
Find the present value of \$14000 due in 9 years at the given rate of interest. (a) 2%/year compounded semiannually? (b) 5%/year compounded semiannually?
April 5, 2013

chemistry
Calculate the increase of entropy in J/K when 8.6 mole of C 2 H 5 OH melts at (-114) o C and 1 atm. ΔH fus = 5.02 kJ/mol
March 31, 2013

College Statistics
probilbility summary low birth weight and smoking moms how to calculate prevanece eatios
March 30, 2013

Organic Chemistry
please homework help A bowl of 582 g of water is placed in a microwave oven that puts out 729 watts (J/s). How long would it take in seconds to increase the temperature of the water from 12.0oC to 46.6oC?
March 25, 2013

Gen. Chem
Could you help me with this homework please.. 105.0 g of water is in a Styrofoam calorimeter of negligible heat capacity. The initial T of the water is 17.1oC. After 288.2 g of an unknown compound at 77.0oC is added, the equilibrium T is 25.1oC. What is the specific heat of ...
March 25, 2013

Math
Make a tree diagram of all the possible arrangements of the word veer
March 17, 2013

njit
i did it but i can't find the right answer i tried several times but i cant get the result please help me out
March 15, 2013

njit
please life saver i am taking a quiz now can some one help me with this pleeeeeeeaaaaaaaaassssssseeee Calculate the pH of 0.175 M phosphoric acid (H3PO4, a triprotic acid). Ka1 = 7.5 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13.
March 15, 2013

chem 126
i did it i found 0.4 but wrong
March 15, 2013

chem 126
Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH < 8.3) and pink in the basic form (pH > 10.0). It is a weak acid with a pKa of 8.7. What is the ratio of the conjugate base concentration to the acid concentration, that is, [B-]/[HB] ...
March 15, 2013

Improving Vocabulary Skills
Chapter 13 the Sentence Check 2 A curtail,B devastate,C Digress,D incentive, E Incorporate,F Indispensable, G Intermittent, H Rigor, I Squander,J succumb. co
March 12, 2013

TRIGONOMETRY HELP
Thank You!!!
March 5, 2013

TRIGONOMETRY HELP
Prove that: cos²Θ - sin²Θ = 2cos²Θ - 1
March 5, 2013

scienses
A solution contains 0.0180 M HNO3, 0.0268 M HI, and 0.250 M formic acid, HCOOH. What is the pH?
March 4, 2013

TRIGONOMETRY HELP
Thank You!!!
March 4, 2013

TRIGONOMETRY HELP
Prove that: (tan²Θ)x(sin²Θ) = (tan²Θ)-(sin²Θ) show work
March 4, 2013

Art History
What may have been one cause for the relative lack of artistic production in Florence during the High Renaissance (after the death of Lorenzo), and the relative increased artistic production in Rome during this period?
February 24, 2013

Urgent Chem Help
A certain substance has a heat of vaporization of 55.30 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 361 K?
February 10, 2013

Science
Some nitrogen atoms have seven neutrons and some have eight neutrons. These two forms of nitrogen are: a. ions of each other b. phases of each other c. isotopes of each other and how exactly do you know? My book doesn't cover this at all yet its in my homework so im not sure
February 5, 2013

Scientific Notation
I got all of them so far EXCEPT this one... help? Thank you! Convert the following into scientific notation: 1/137
January 23, 2013

Math
Compute the following special functions. Keep the correct number of significant figures. 10^5.4 Can somewhere help me with this? Is it as simple as putting it into my calculator just like that? if so, how do I know what the correct number of sig figs are since the worksheet ...
January 21, 2013

trig/sig figs
There are 60" in 1', 60' in 1°, and 2π radians in 360°. Convert arc-seconds into radians. KEep 6 significant figures. If someone could help and walk me through this process, it would be soooo appreciated!
January 17, 2013

multiplying and significant figs
Thank you so much! What about 1300 * 2.16? I know that probably also looks very simple but sig figs are confusing me, such a new concept.
January 17, 2013

multiplying and significant figs
Multipy and keep only the correct number of significant figures. 101.6 * 3
January 17, 2013

astronomy/conversion
There are 365.25 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Convert years into seconds. Show your work and keep 5 significant figures. Ok, so finding it is easy (multiply 24, 60, 60 and 365.25) but how does the significant figures ...
January 17, 2013

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