Sunday
November 23, 2014

Posts by carla


Total # Posts: 207

Math
Find all real solutions x to (4^x)-(2^x)=56. Please explain in steps! Thank you.
November 21, 2014

spanish
Te banas o te duchas regularmente?
November 12, 2014

math
Mikhail used 220 inches of wire to make this figure. this figure is made up two identical triangles,a 15 inch by 12 inch rectangle and a square of side 19 inches.Whatis the length of one side of each triangle if allthe sides of the triangles are equal in length.
November 5, 2014

math
How did you get the 1260?
November 5, 2014

math
jasmine mixes 1250 milliliters of syrup with twice as much water to make lemonade. she then pours the lemonade equally into 15 glasses.How much lemonade does each glass contain.
November 5, 2014

math
At a school fair, a fifth-grade class sold 25 liters of orange juice. The orange juice was sold in cups containing 200 milliliters and 300 milliliters. An equal number of cups containing 200 milliliters and 300 milliliters were sold. How many cups of orange juice did the class...
November 5, 2014

math
Beth and Lewis buy the same amount of fish pellets. If Beth feeds her goldfish 14 fish pellets each day, a container of pellets will last 20 days. If Lewis feeds his goldfish 8 fish pellets each day, how many more days will the container of pellets last Lewis' goldfish?
November 5, 2014

Math
Thanks Brady! You're the best! :)
November 5, 2014

Math
Joan picked 9 pounds of strawberries in one hour. How long does she take to pick 72 pounds of strawberries?
November 5, 2014

Math
equation is J=0.15h J=total cost, h=hats How much would it cost to buy 10 hats? calculate the total cost and show how you got the answer. would it be J=0.15*10 ? thank you
October 30, 2014

Chemistry
If 6.0 g of Oxygen (O2) reacts with 12.0 g of hydrogen (H2) to give 5.0 g of dihydrogen monoxide. What's the % yield?
October 16, 2014

chemistry
71.42%
October 11, 2014

Math
Min = 2 Max = 40 What about the rest? :(
May 23, 2014

Math
What are the minimum, first quartile, median, third quartile, and maximum of the data set? 40, 7, 2, 35, 12, 23, 18, 28 Please help me.
May 23, 2014

Mat/116
Which set of points are one the line y = 2x - 3
February 23, 2014

Mat/116
An experiment is underway to test the effect of extreme temperatures on a newly developed liquid. Two hours into the experiment the temperature of the liquid measured to be -17 degrees celsius. After eight hours of the experiment the temperature of the liquid is -47 degrees ...
February 23, 2014

English
“It seems your central character has a really cool power: being able to hear what others are thinking,” Tom said. “Actually, I think it was more of a jinx,” replied Ben. “Being able to hear what people are really thinking is one of those things you ...
February 9, 2014

Physics
A 500.0 kg object is attached by a rope through a pulley to a paddle-wheel shaft that is placed in a well-insulated tank holding 25.0 kg of water. The object is allowed to fall, causing the paddle wheel to rotate, churning the water. If the object falls a vertical distance of ...
February 5, 2014

Physics
What is the temperature increase of water per kilogram at the bottom of a 145 m waterfall if all of the initial potential energy is transferred as heat to the water?
February 5, 2014

physics
When a 57.0 gram tennis ball is served, it accelerates from rest to a speed of 46.5 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44.8 cm. What is the magnitude of the net force acting on the ball in newtons?
January 14, 2014

statistics
r=-.96 between cravings for pizza and ability to concentrate on studying
April 20, 2013

math
Of the following products, which has the most prime factors? a)1*121 B)11*15 C)7*19 D)6*35
April 18, 2013

Math
Is this in feet or yards?
April 5, 2013

Math
I need 120 pieces of wire that are 18 inches long. How much wire should I buy? Thanks!
April 5, 2013

math
175+.15X=400 .15X=225 x=1500
February 26, 2013

Grammar
I believe the answer is D
December 12, 2012

psychological statistics
Suppose you were going to create your own study to examine what course-delivery format (online, blended, or face-to-face) leads to the best performance in a psychological statistics class. In a paper identify the following for your study: What is your research question? What ...
November 19, 2012

psychological statistics
can someone please respond
November 19, 2012

psychological statistics
I was talking with someone about setting up an account and getting help with an assignment
November 19, 2012

Math/Management
MeanBeats is a company that manufactures and sells electronic musical equipment. Their headphone product line consists of two products, Reverbia and Bscape. MeanBeats sells the headphones to retailers at $600 and $300 per pack for Reverbia and Bscape, respectively. The company...
October 17, 2012

Math/Management
FuelMotion is an oil company that owns two oil processing plants that produce gasoline from crude oil. Their Georgia Plant produces 2 thousand gallons of premium, 1 thousand gallons of medium, and 6 thousand gallons of regular gasoline every day it operates. Their Arizona ...
October 17, 2012

Math/Management
a. Formulate the problem as a linear programming model (that is, define the variables, and write down the objective function and all constraints mathematically). b. Create a spreadsheet model for this problem and solve with Excel Solver. c. What is the optimal solution? What ...
October 17, 2012

Math/Management
Ten jobs are to be completed by three workers (Sam, Joy, and Kelly) during the next week. Each person works a 40-hour week and is paid an hourly rate: Sam, Joy, and Kelly earn $11, $13, and $14 per hour, respectively. Union rules require workers to be treated fairly; to ensure...
October 17, 2012

physics
The largest stone jar on the plain of jars in laos has a mass of 6.0 x 10^3 Kg. Express this mass in miligrams.
September 9, 2012

algebra/trig
1. which number below is irrational? a)√4/9 b) √20 c)√121 Why is the number you chose irrational? 2. express in simplest form: √48-5√27+2√75 3. solve for x: (√x+2)-3=0
August 7, 2012

algebra/trig
1. f(x)=x^3+5 does f(x) have an inverse? if so, find the inverse and decide if it is a function. 2. if f(x)= 3x+1 and g(x)= x^2-1, find (f∙ g)(2) 3. if f(x)= (2x)^2, find f(-4) thank you :)
August 7, 2012

Statistics
r=-.96 between craving for pizza and ability to concentrate on studying
August 1, 2012

biology
what is anterior tibial translation?
July 27, 2012

algebra
Hannah invests $3850 dollars at an annual rate of 6% compounded continuously, according to the formula A=Pe^rt, where A is the amount, P is the principal, e=2.718, r is the rate of interest, and t is the time, in years. (a) Determine, to the nearest dollar the amount of money ...
July 27, 2012

algebra
1.if f(x)=8^x, find the value of f(2/3) 2. If 8^2x=2^(x+5), what is the value of x?
July 27, 2012

algebra
a function is defined by the equation y=8x-3. If the domain is 2≤x≤4, find the minimum value in the range of the function.
July 27, 2012

algebra
a function is defined by the equation y=8x-3. If the domain is 2≤x≤4, find the minimum value in the range of the function.
July 27, 2012

Biology
What does it mean that an anterior cruciate ligament resists anterior translation and internal rotation?
July 24, 2012

Harvard Referencing, help please!
i looked though this before but i cant find the option on protocols...
July 14, 2012

Harvard Referencing, help please!
Hey, I have here Clinical Protocols in front of me from one of the hospitals. I'm writing up an assignment and need to reference some parts of the protocol. The system that we use in college is Harvard Referencing system but I never referenced protocols before. Any tips? ...
July 14, 2012

English
How could I say this sentence in a different way but it will still have that same sense: 'In future, I will aim to develop my assertive skills when working with colleagues, in order to ensure that the well-being of patients is maintained'
July 14, 2012

business
i have writers block. how can i start my report describing joint stock, limited liability, partnership, and sole proprietorship of a business.
July 5, 2012

chemistry
how many mole of air are there ina 125 mL flask if the pressure is 739 torr and the temperature is 18 degrees celsius?
May 28, 2012

math
lim x--->pi/4 tanx - cotx / x - pi/4
April 29, 2012

Art 101
Describe how each artist(Da Vinci and Michelangelo) View drawing as part of the creative process.
April 27, 2012

Math
7/9=8/x
April 24, 2012

social studies
Why did the Tokugawa shogunate keep Japan isolated from 1603 until 1853?
April 18, 2012

chemistry redox titration
molarity times liters? but where would i get liters from?
April 8, 2012

chemistry redox titration
calculate the volume of a 0.02M mno4- solution that is required to react completely with 10.0ml of 0.1M c2o4-2
April 8, 2012

math
I have 20 pieces of sod that are 1ft X 2ft and 20 pieces of sod that are 1ft X 3ft. How large a square in my garden can I put them on?
March 20, 2012

Chemistry
How many moles of NaOH per liter of solution would you expect to have in a solution that is labeled "0.105 M NaOH" on the side of the gradulated cylinder?
March 15, 2012

chemistry
How can a liquid, soda, contain a gas, carbon dioxide?
March 14, 2012

chemistry
A stock solution of 0.0100 M KMnO4 is diluted by taking 15.5 mL of it and diluting it to 100.0 mL. From this diluted solution, 5.00 mL is taken out and diluted to 100.0 mL. What is the concentration of the solution obtained in the end
March 13, 2012

math
estimating products writing to explain .each video game at an arcade requires 375 tokens. tom has 2,000 tokens . he said he can play 6 games. is he correct ? explain.
January 31, 2012

english
What are complete subjects and complete predicates
December 12, 2011

Math
Suppose that y is directly proportional to x. a. Use the given information to find the constant of proportionality k. b. Then use y=kx to find y for x=6 y=-58 when x=7
November 25, 2011

Math
The strength S of a rectangular beam varies jointly as its width w and the square of its thickness t. If a wood beam 3 inches wide and 5 inches thick supports 300 pounds, how much can a similar beam 3 inches wide and 8 inches thick support? S=? pounds
November 25, 2011

Math
An alligator’s tail length, T, varies directly at its body length, B. An alligator with a body length of 3.2 feet has a tail length of 2 feet. What is the tail length of an alligator whose body length is 4.8 feet?
November 22, 2011

Analytical Chem
What are the molar concentrations of H3O+ and OH- in 0.200 M NaOCL
October 16, 2011

johns
an example of a captivating and sophisticated introduction about choice of television shows as one matures including a solid thesis statement.
October 13, 2011

writing
what is an example of a strong and solid thesis statement concerning the choice of televisions shows as one matures.
October 13, 2011

chemistry
calculate the molar mass of an unknown whose mass was 0.846 g, and occupied a volume of 354 cm3 at a pressure of 752 torr and a temperature of 100 degrees celcius. I came up with .0114 moles, I want to know if this is correct.
July 13, 2011

Statistics
Can someone please give specific examples of how psychologists use statistics
June 26, 2011

Algebra
I need helop!A lawn a company charges an initial fee of $200.00 plus $50 per hour for labor costs. If h represents labor hours and c represents the cost what is the total cost equation and how do I work this out step by step, I need to understnad this! Thank You
June 8, 2011

algebra
5-9y-2y<27 The solution set is {y|y>blank}
May 23, 2011

algebra
Translation to an inequality. use the variable x. The price of an amusement park ticket is greater than or equal to $33 The inequality is what? (simplify your answer. Put the variable on the left side of the inequality.)
May 20, 2011

HomeEc/Sewing
What are all of the fabric parts?
May 19, 2011

sinclair
how can i write an rhetorical essay with ethos pathos and logos on Denise Noes "parellel words "
May 19, 2011

CHEMISTRY
complete and balance the reaction. HCl + Ba(HO)2 --- the 2 is suppose to be a sub 2 but can get it to do so on this computer and the --- is an arrow. I believe it is BaClO + H2O is this correct?
May 3, 2011

math
A train traveled 1,176 mi in 21 h. What was the speed of the train Speed is the distance traveled divided by the time.
April 26, 2011

Chemistry
If 0.823g of an unknown gas occupies a volume of 702.0 mL at 38.9 deg. Celsius, and 726.2 mm Hg pressure, what is the molar mass of the gas? (pressure has already been corrected for water vapor pressure)
April 17, 2011

trigonometry
a surveyor finds that from Point A on the ground the angle of elevation to the top of a mountin is 23 degrees. when he is at point B that is 1/4 closer to the base of the mountain the angle of elevation is 43 degrees. how high is the moutnain? One mile =5280 feet. (Assume that...
April 12, 2011

chemistry
what mass of copper II nitrate would be produced from the complete reaction of 45.6g of copper according to the chemical reaction : Cu + 2 AgNO3 (can't make it a small 3, sorry)----Cu(NO3) + 2 Ag
April 5, 2011

chemistry
a solution that has an absorbance of 0.603 is diluted ten fold. What is the absorbance of this solution now?
April 3, 2011

chemistry
if I add water to 100.0 mL of a 0.15 M NaOH solution until the final volume is 150.0 mL what will the molarity of the diluted solution be? If I set this up properly I believe it is 0.10 M.....am I correct?
April 3, 2011

chemistry
Substance x has a molar mass of 107.6 g/mol. when 2.50 g of substance x burns in an iron calorimeter the temp. of calorimeter and water (2.000Kg)increases from 25.8 d Celsius to 38.7 d celsius. What is the molar heat of combustion of substance x in kJ/mol. the heat capacity of...
March 27, 2011

grade 9 polynomials
7r + 21s - 4r + 18S then combine like terms
March 27, 2011

chemistry
This was a multiple choice question, with possible answers of -13.1 KJ/mol; -6.26 KJ/mol; -27.8 KJ/mol; or -26.2 KJ/mol. I was confused as to how to set equation but now I'm confused because if I'm doing this right-none of these answers work. Thanks!
March 27, 2011

chemistry
The amount of 2.00 mol of a solid ionic compound was dissolved in 225 mL of water in an insulated container. The initial temp of water was 20 deg. C and the final temp. was 47.8 deg C. What is the delta heat Dissolution? Assume the heat absorbed by the container is negligible.
March 27, 2011

chemistry
substance X has a molar mass of 107.6 g/mol. When 2.50 g of substance x burns in an iron calorimeter, the temp. of the calorimeter and the water (2.000 Kg) increases from 25.8 deg. C to 38.7 deg. C. What is the molar heat of combustion of substance X in KJ/Mole. Heat capacity ...
March 27, 2011

chemistry
Thank You! You have answered a couple of my questions and I wish I had you for my Professor as mine seems to expect knowledge and not want to teach it! (haha but not really funny!) Thanks again!
March 10, 2011

chemistry
Okay, so this was a question on a quiz and I'm not sure if we were to just assume that it was dissolved? But the moles of CaCO3 is .4 correct?
March 10, 2011

chemistry
what is the molarity of 40g in 0.5L of solution. Molecular weight of substance is 100.09g/mole.
March 10, 2011

chemistry
if you have 1000g of a substance at -20 degrees celsius with a specific heat of .110 c/1 degree celsius and you add 12 kilojoules to it what is the resulting temperature?
March 8, 2011

Chemistry
8.1 x 10 to (-3)power has 2 sig fig. 910 has 2 sig fig zero doesn't count unless there is a decimal point after it. 175.0 has 4 decimal point is present and zero is to the left of the other sig figs. hope this helps!
March 8, 2011

Physics 102 (College)
I'm stuck on part B of this question: A system does 125 J of work on environment and gains 79 J of heat in the process. Find change in internal energy (delta U, abbreviated dU)of a. the system and b. the environment. A. Find dU of the system W = 125 J Q = 79 J dU = Q - W ...
February 27, 2011

Physics 102 (College)
Hmm, 5 didn't work for this particular problem, but thanks for the suggestion
February 27, 2011

Physics 102 (College)
I'm stuck on part B of this question: A system does 125 J of work on environment and gains 79 J of heat in the process. Find change in internal energy (delta U, abbreviated dU)of a. the system and b. the environment. A. Find dU of the system W = 125 J Q = 79 J dU = Q - W ...
February 27, 2011

Physics 102 (College)
Thank you drwls! Explaining what the question was asking for helped me realize the problem was actually much simpler than what I was trying to do. W = -4250
February 27, 2011

Physics 102 (College)
A few homework problems. 1) The temp of a monotomic ideal gas remains constant (isothermic) during a process in which 4250 J of heat flows out of gas. How much work is done? Pos/neg? delta T = 0 and delta U = 0 by inference Q = 4250 U = 3/2 nRT Thanks for help/hints
February 27, 2011

com
what would be the verb and its tense: Successful financial planning can be improved through good education.
January 17, 2011

math question 4- very urgent !
Find the average value of f(x) = x^3 + 3 for 0 ≤ x ≤ 2 and find all values of x* described in the Mean Value Theorem for Integrals.
December 19, 2010

math question 3- very urgent !
Find x* on [0, 2] such that f(x*) equals the average value of f(x) = 5x + 9 over [0, 2].
December 19, 2010

math question 2- very urgent !
Given f (x) = √(7 + x) + 4 . Use the rectangle method to approximate the area on the interval [0, 8] using 4 rectangles. (Assume the graph goes through the midpoint of each rectangle.)
December 19, 2010

math - very urgent !
Verify that f(x) = x^3 − 2x + 6 satisfies the hypothesis of the Mean-Value Theorem over the interval [-2, 3] and find all values of C that satisfy the conclusion of the theorem.
December 19, 2010

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