Monday
December 22, 2014

Posts by JENNIFER


Total # Posts: 2,051

Math- algebra
If a ball is thrown directly upward with a velocity of 26 ft/s, its height (in feet) after t seconds is given by y = 26t − 16t^2. What is the maximum height attained by the ball? -Please just post answer if possible, my calculations are off. Just want to make sure I am ...
December 17, 2014

Science
Why are there variations in atmospheric pressure how was this proven? Why do your ear pop when trebling to different altitudes?
December 15, 2014

Math
When Curtis was born, his parents began depositing $1000 at the end of every year into an annuity to save for his college education. If the account paid 7% compounded annually for the first 10 years and then dropped to 5% for the next eight years, how much is the account worth...
December 11, 2014

Math
Thank you by the way! I appreciate it.
December 11, 2014

Math
Yes, that was right. I must have put in the wrong numbers at first when I was doing it so I thought I was using the wrong formula.
December 11, 2014

Math
Young and Company owes bond holders $5,500 interest at the end of each quarter for the next five years. How much must they deposit now at 8% interest compounded quarterly to yield an annuity payment of $5,500? -- I am pretty sure I know how to do the problem but I am just ...
December 11, 2014

Chemistry
You read a reversible reaction from left to right in the forward direction. This direction shows which of these occurring? a) the reactants forming a product b) the product decomposing to form reactants c) both a and b occurring d) b occurring, followed by a e) none of the ...
December 8, 2014

Help with Statistics (T-value and decision rule)
For a random sample of 12 observations, the sample mean was 407 and the standard deviation was 6. Using the .05 significant level, answer the following questions. What would the t value be? What is the decision rule? **** I think the t-value would be t = -3.0845 Any help would...
December 5, 2014

Math please check
I know the answer to the first one is "e" and the answer to the second one is "a "but I have no idea why please explain how to do these two problems. I am very confused with this new method. Thank you! The “Cobb-Douglas” productivity function for ...
December 5, 2014

Physics
The brakes of a bike (with a person) having a mass of 63 kg, reduces it's velocity from 8.5 m/s to 0 m/s in 3.0 seconds. What is the magnitude of braking force?
December 5, 2014

Physics
super mouse steals a large piece of cheese by rolling it across the floor with a force of 5.0 N. If the cheese has a mass of 50 kg with what acceleration does the cheese move? If super mouse's force remains constant, what will be the speed of the rolling cheese
December 5, 2014

Calculus question please explain
I know the answer to the first one is "e" and the answer to the second one is "a "but I have no idea why please explain how to do these two problems. I am very confused with this method. Thank you! The “Cobb-Douglas” productivity function for a ...
December 5, 2014

Physics
A 31.5 N object is in free fall. What is the magnitude of the net force which acts on the object? Answer in units of N
December 4, 2014

Chemistry
so if I multiply the mL to the solution how does that give me the moles of propanioc acid? and what about the glycerol?
December 3, 2014

Chemistry
If 325mL of a 0.58 M solution of a propanoic acid (a fatty acid) was mixed with excess glycerol what is, the maximum number of molecules of fat or oil that could result?(you will need Avogadros number = 6.022 X 10 to the 23rd power)....I need to show all work and im completely...
December 3, 2014

Physics
A 4.26 kg block starts up a 33.0 degree incline at 7.81 m/s. How far will it slide if the coefficient of kinetic friction is 0.23?
November 30, 2014

What is the best estimate of the population mean?
The Jolliebee hamburger chain specializes in half-pound hamburgers. The sales follow a normal distribution. The standard deviation of the distribution for daily sakes is $3000. A sample of 40 showed the mean daily sale to be $20,000. What is the best estimate of the population...
November 30, 2014

science
how many moles of oxygen gas are necessary to form 0.737 moles of carbon dioxide
November 24, 2014

Calculus Please check
Please check my answers and let me know if I did something wrong. Thank you! Find the partial derivative of x, and the partial derivative of y, then the partial derivative of x (1,-1), and the partal derivative of y (1,-1). f(x,y) = x^4 y^2 -x here is what I got @f/@x = 3x^3 y...
November 20, 2014

Please help me with statistics
I was asked to: Calculate the d value or effect size for A but use this data instead. A. Group one 12 and group two 11 standard deviation 3 Can anyone please help me figure out how to find the d value. Any help would be great.
November 20, 2014

Honors Science
Why would vinegar be expressed in liters and milliliters?
November 16, 2014

Calculus Please Help
I think I have the right answer, but I am not 100% sure how to do the values at (1,-1) and the one below at (0,-1, 1). Please explain how I need to approach how to do these. Thank You! Calculate the partial derivative @f/@x, @f/@y and @f/@x | (1,-1), and @f/@y | (1,-1) f(x,y...
November 13, 2014

Math please check
I think I have the right answer, but I am not 100% sure how to do the values at (1,-1) and the one below at (0,-1, 1). Please explain how I need to approach how to do these. Thank You! Calculate the partial derivative @f/@x, @f/@y and @f/@x | (1,-1), and @f/@y | (1,-1) f(x,y...
November 13, 2014

calculus
A large container has the shape of a frustum of a cone with top radius 5 m, bottom radius 3m, and height 12m. The container is being filled with water at the constant rate 4.9 m^3/min. At what rate is the level of water rising at the instant the water is 2 deep? the finial ...
November 8, 2014

Calculus
Sorry Mr Steve I submitted your answer and It was wrong answer the right answer = 14.0 cm/min Could You please tell me how to do this question because I have to do it again with different values.
November 7, 2014

Calculus
A large container has the shape of a frustum of a cone with top radius 5 m, bottom radius 3m, and height 12m. The container is being filled with water at the constant rate 4.9 m^3/min. At what rate is the level of water rising at the instant the water is 2 deep?
November 7, 2014

Calculus
Can someone please walk me through the steps, I am just not sure what to do next. thanks Solve the optimization problem. Minimize F = x^2 + y^2 subject to xy^2 = 16 I took the derivative F = 2x + 2Y but I don't know where to go from here.
November 6, 2014

Math please help
I am so confused on how to set this up then solve please help. For a rectangle with area 100 to have the smallest perimeter what divisions should it have? Would I use 2L+2W=P, A=xy, or what. I know it is probably something really simple and I am just not seeing it.
November 6, 2014

Pre-Calc
THANK YOU!!
November 3, 2014

Pre-Calc
A radioactive isotope has a half life of 8.1 days. If the sample starts with 25 grams, how much will there be after 90 days?
November 3, 2014

Math Please Check
Please tell me if this are right. Thank you! Find the exact location of all the relative and absolute extrema? h(t) = t^3 - 3t^2 domain: [-1, + infinity) For this one I got x=2 as the minimum, and x=0 as the maximum. g(t) = 3t^4 - 16t^3 + 24t^2 +1 domain: (-infinity, +infinity...
October 30, 2014

Math
Marginal revenue the weekly revenue from the sale of emeralds at Eduardo’s Emerald Emporium (EEE) is decreasing at a rate of $500 per $1 increase in price and the price is decreasing at a rate of $0.45 per additional emerald sold. What is the marginal revenue? I am not ...
October 21, 2014

chemistry
Twenty grams of aluminum metal at 83.2 C were mixed with 49.3 g of water at 19.7 C. Assuming no heat loss, what was the final temperature of the Aluminum water metal? specific heat for Al= 0.215 specific heat for H2O=1.00
October 15, 2014

Statistics
the assets (in billions of dollars) of the four wealthiest people in a particular country are 39, 32, 11, 10. assume that samples of size n = 2 are randomly selected with replacement from this population of four values
October 10, 2014

Math
find three consecutive positive odd integers such that the sum of the squares of the first and second integers is equal to the square of the third integer minus 7?
October 9, 2014

Math (please check)
Compute the indicated derivative. d/dt [ ( t^2 + t^0.5 ) ( t^0.5 - t^-0.5 ) ] |t=1 I took the f and g prime then I used the quotient rule my final answer came out to 3t^1.5 - 1.5t^0.5 + t + 0.5t^-1 then I plugged 1 in for t and got 5.196 Please let me know if this is right, if...
October 9, 2014

probability;math
A card is chosen at random from a deck of 52 cards It is then replaced and then a second card is chosen.What is the probability of choosing a jack and then an eight?
October 5, 2014

chemistry, biotechnology
The question is: "The molar extinction coefficient of pure antibody is 1.4 absorbance units per milligram antibody @280nm. You have a concentrated antibody solution, so you make a 5-fold dilution and measure @280, getting an absorbance of 0.845. What is the concentration ...
October 2, 2014

science, chemistry, biotechnology
"You're creating a standard curve for pyruvate. You need to create a standard with 20 micromoles in a cuvette. How much 100 mM pyruvate would you need?" My understanding is to solve for VOLUME using the equation: micromoles = (mM)(volume in ml) 20 micromoles = (...
October 1, 2014

math
Mr snider is tiling a floor .The floor is 16 tiles long and 5 toles wide.How many tiles are in the border section?
September 29, 2014

CHM 300
Experiment: Redox titration;determination of ascorbic acid by an iodometric back-titration Why is sodium carbonate added to the thiosulfate solution ? why is the water used for preparing the thiosulfate solution boiled ?
September 26, 2014

algerbra
I need some help please 7/10 / 1/8+4/5*1/2
September 23, 2014

understanding motion science
it takes a runner 10 seconds to run 100 yards. the runners speed is ?
September 2, 2014

medical billing and coding
a 12 year old boy presents with his father to er due to open wounds to his arm, hand, and upper leg. the injury occurred when the boy fell on a barbed-wire fence at farm while running in the field. Diagnosis: multiple lacerations to the right forearm, right hand, and left ...
August 30, 2014

Voabulary
How can we hope to a city that is surrounded by such strong walls and has ample supplies of everything it needs?
August 21, 2014

english
in general on what stage of the writing process should you spend most of your time a. analyzing your audience b .writing your first draft c prewriting d.revising your material
August 13, 2014

penn foster paralegal
i need help with the following i need the info to be for OHIO LAWS Participants Sally Bright asked her husband, John, to move out temporarily due to marital difficulties. After a brief separation, Sally filed for divorce and received temporary custody of their 14-year-old ...
August 4, 2014

math
Five points lie in the same plane with no three points on the same line. A circle can be drawn through any three of the five points. What is the total number of different circle that can be drawn such that each circle passes through three of the five points?
July 25, 2014

Algebra
You are walking away from home at a constant velocity of 5 km per hour. The first landmark you see is your favorite fountain which happens to be 2 km from your house. Which of the following sequences describes the distances you cover at internals of one hour starting when you ...
July 15, 2014

Geometry
I need a little more explanation please maybe step by step and the answer
July 10, 2014

statistics
how much sale tax in due for a payment of 993.91
July 1, 2014

math-Ms Sue please help
Thanks...that's what I got
June 24, 2014

math-Ms Sue please help
What is the monthly payment on a 25-year loan of $73,700 if the annual interest rate is 10%?
June 24, 2014

English
Oh okay, strike my answer:(
June 24, 2014

English
Shouldn't it say, If you want to feel well rested? Am I wrong?
June 24, 2014

math
What is the monthly payment on a 25-year loan of $73,700 if the annual interest rate is 10%?
June 24, 2014

math
ok, thanks anyway
June 24, 2014

math-help please Ms Sue
I need help on this one please
June 24, 2014

math
A farmer buys a new tractor for $38,000. He makes a down payment of $10,000 and finances the balance at 8.5% APR over 48 months. Before making the 12th payment, the farmer decides to pay the remaining balance on the loan. How much interest will the farmer save (use the ...
June 24, 2014

math
A newlywed couple bought a washer and dryer for $800. They paid 5% down and then paid 12 monthly payments of $65.41. Determine the APR of the loan to the nearest tenth of a percent.
June 24, 2014

math
Thanks...I got it now:) It took me several hours and with a little help from my husband I understand it better.
June 24, 2014

math
A carpenter spent $4500 to purchase a table saw , a circular saw, and a panel saw. He paid 5% down and financed the balance with a 30-month fixed installment loan with an APR of 5.0%. Determine the total finance charge and monthly payment for the loan.
June 24, 2014

math
thanks...I got it!
June 24, 2014

math
James has set up an ordinary annuity to save for his retirement in 18 years. If his monthly payments are $225 and the annuity has an annual interest rate of 8% compounded monthly, what will be the value of the annuity when he retires?
June 24, 2014

math
Thank you:)
June 24, 2014

math
Barbara knows that she will need to buy a new car in 3 years. The car will cost $15,000 by then. How much should she invest now at 8%, compounded quarterly, so that she will have enough to buy a new car?
June 24, 2014

math
Thanks:)
June 24, 2014

math-help
I got $674.10
June 24, 2014

math
John Lee's savings account has a balance of $4494. After 3 years, what will the amount of interest be at 5% compounded semiannually?
June 24, 2014

math
thank you!
June 24, 2014

math
4800/9=533.33x5%=266.665 4800+240=5040.00
June 24, 2014

math-help
I think the answer is $5040.00
June 24, 2014

math
Allan borrowed $4800 from his father to buy a car. He repaid him after 9 months with interest of 5% per year. Find the total amount he repaid.
June 24, 2014

math
thank you Ms. Sue
June 24, 2014

math
All 30 of the students in a mathematics class attended class on Monday. On Tuesday only 22 students attended. What was the percent decrease?
June 24, 2014

Criminal Justice - Policing
Yes, it is C
June 24, 2014

Science
Yes, C
June 24, 2014

physics
A 236 kg block is released at a 4.2 m height as shown. The track is frictionless except for a portion of length 6.2 m . The block travels down the track, hits a spring of force constant k = 1483 N/m . The coefficient of kinetic fric- tion between surface and block over the 6.2...
June 24, 2014

english
Capitalized name: the name of a specific person or thing, normally beginning with a capital letter and not used with the indefinite article or a modifier, e.g. "York," "Sally," or "Henderson"
June 23, 2014

Criminal Justice - Policing
Either A or B...I'm thinking A
June 22, 2014

Survey of Mathematics
Thanks Henry!
June 22, 2014

Survey of Mathematics
On January 5, Ebony Davis borrowed $6,500 on a simple interest loan from a lending institution to finance her catering business. She borrows the money at a rate of 8.5% with a term ending on December 9. a. Calculate Ebony's interest on the simple interest loan if she waits...
June 22, 2014

math
A house costs $289,000. With a 5% down payment, 2 points due at closing, and the rest financed for 25 years at 6.0% fixed interest, what is the total cost of the house?
June 20, 2014

Math
Sorry:(
June 20, 2014

Urgent! Help please!
Can you help?
June 20, 2014

Urgent! Help please!
On January 5, Ebony Davis borrowed $6,500 on a simple interest loan from a lending institution to finance her catering business. She borrows the money at a rate of 8.5% with a term ending on December 9. a. Calculate Ebony's interest on the simple interest loan if she waits...
June 20, 2014

Urgent! Please help!
Can you help?
June 20, 2014

Urgent! Please help!
A house costs $289,000. With a 5% down payment, 2 points due at closing, and the rest financed for 25 years at 6.0% fixed interest, what is the total cost of the house?
June 20, 2014

Math
A homeowner installed a new swimming pool for $8500. He paid 8% down and then paid 36 monthly payments of $243.07. Determine the APR of the loan to the nearest one-half of a percent.
June 20, 2014

Please help! Urgent
Can you help?
June 20, 2014

Please help! Urgent
A homeowner installed a new swimming pool for $8500. He paid 8% down and then paid 36 monthly payments of $243.07. Determine the APR of the loan to the nearest one-half of a percent.
June 20, 2014

Survey of mathematics
On January 5, Ebony Davis borrowed $6,500 on a simple interest loan from a lending institution to finance her catering business. She borrows the money at a rate of 8.5% with a term ending on December 9. a. Calculate Ebony's interest on the simple interest loan if she waits...
June 20, 2014

health
40 million
June 20, 2014

finite math
I got .03%
June 20, 2014

Survey of Mathematics
Thank you
June 20, 2014

Survey of Mathematics
A house costs $289,000. With a 5% down payment, 2 points due at closing, and the rest financed for 25 years at 6.0% fixed interest, what is the total cost of the house?
June 20, 2014

Survey of mathematics
A homeowner installed a new swimming pool for $8500. He paid 8% down and then paid 36 monthly payments of $243.07. Determine the APR of the loan to the nearest one-half of a percent.
June 20, 2014

Survey of Mathamtics
You want to invest $7500 for 15 years. The local bank offers a rate of 6.5% compounded monthly. The local credit union offers a rate of 6.75% compounded semiannually. Which is the better option? How did you arrive at this conclusion?
June 20, 2014

car insurance?
It is D
June 20, 2014

health
D. all the above
June 20, 2014

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