Saturday
December 20, 2014

Posts by Tim


Total # Posts: 976

Calculus Help
Let P(t) be the percentage of Americans under the age of 18 at time t. The table gives values of this function in census years from 1950 to 2000. (I didnt put the table here because it will not display well so the table has basically t as time from 1950 to 2000 and P(t) values...
March 2, 2014

Calc Help Please
I did some of them so can you help me with the rest. Consider the piecewise functon f(x) = (4x^2-3)/(3x^2-15) x<(-2) square root of(4-x^2) (-2)<-x<-(2) 5 x>2 lim x->-2^- f(x)= ?????? lim x->-2^+ f(x)= 0 f(-2)= 0 f(4) = 5 list the values of x for which f(x) is...
February 28, 2014

Math
the smallest regulation golf ball has a volume of 2.48 cubic inches. if the diameter of the ball were increased by 10%, or a factor of 1.1, what will the volume of the golf ball be?
February 27, 2014

Philosophy( Please Help Me))
Hi, can someone please tell me whether or not I have choose the correct answer for these three questions. 1. According to Gilligan, which of the following best describes male thinking? a. Males adopt a personal way of relating to moral issues. b. Males adopt an abstract way of...
February 27, 2014

Calculus
the correct answer I was given has a negative 1/3 before the log. Also, how did you get the 1/3 value?
February 24, 2014

Calculus
Evaluate the integral: (cos(2-3x) - tan(5-3x))dx
February 24, 2014

Physics
Assume that you take data on the projectile range for a variety of different launch angles A at a fixed initial velocity Vo. You would like to plot your data to see if the range formula discussed in the introduction is supported by the data. The easiest way to do this is to ...
February 17, 2014

Physics
For a given initial projectile speed, you observe that the projectile has a certain range R at a launch angle A = 30 degrees. For what other launch angle will the projectile have the same range (assuming the same initial projectile speed)? Without the use of mathematical ...
February 17, 2014

Physics
For a given initial projectile speed Vo, calculate what launch angle A gives the longest range R. Show your work, don't just quote a number.
February 17, 2014

Physics
Make a predictive statement about the path dependence of accelerations due to gravity
February 10, 2014

Physics
Calculate the time it would take for an object to fall through a linear height equal to the objects starting height, h for a 20 degree incline.
February 10, 2014

Physics
An object begins at rest on a frictionless inclined plane at a linear distance of 2.0m from the base of the incline. If the incline makes an angle of 20 degrees with the horizontal, determine the time it will take for the object to reach the base of the incline.
February 10, 2014

Physics
Thanks for the help. It is much appreciated!
February 3, 2014

Physics
A small washer is taped to a golf ball and the ball is hung from an electromagnet. When a trigger is activated the electromagnet will shut off and the golf ball will fall through a height of 75 cm to land on a time of flight pad. Determine the amount of time it will take for ...
February 3, 2014

Physics
An object at rest accelerates through a distance of 1.5 m at which point the instantaneous velocity of the object is 3.5m/s. Determine: a. The average acceleration of the object b. The time it took the object to travel 1.5m c. The average velocity of the object during this ...
February 3, 2014

maths
One pump fills a tank two times as fast as another pump. If the pumps work together they fill the tank in 18 minutes. How long does it take each pump working alone to fill the tank?
February 2, 2014

physics
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N). (a) How much force would a single rope ...
January 27, 2014

maths
A coin box contained some twenty-cent and fifty-cent coins in the ratio 4 : 3. After 20 twenty-cent coins were taken out to exchange for fifty-cents coins of the same value and put back in the box, the ratio of the number of twenty-cent coins to the number of fifty-cents coins...
January 27, 2014

Maths
Thanks Steve. Where is 12 come from?
January 27, 2014

Maths
Daniel's watering can holds 6L of water when full. He fills his watering can 3 times from the bucket and then the bucket is empty. How much more waterdoes one full bucket hold than Daniel's full watering can? A 3L B 9L C 12L D 18L
January 27, 2014

MATHS
Ken had three times as many apples as papayas. After selling 160 apples and 25 papayas, he had twice as many papayas as apples left. How many fruits did he have at first?
January 27, 2014

MATH
Mrs Lim is 41 years old and her daughter is 14 years old. How many years ago was Mrs Lim four times as old as her daughter?
January 26, 2014

business
Tim Urban, owner/manager of Urban's Motor Court in Key West, is considering outsourcing the daily room cleanup for his motel to Duffy's Maid Service. Tim rents an average of 50 rooms for each of 365 nights (365 X 50 equals the total rooms rented for the year(. Tim'...
January 22, 2014

Chemistry
1.42e9 2.36e-10
December 21, 2013

math
a dealer has 30 cars and trucks. If 2 more cars are delivered, the dealer will have 3 times as many cars as trucks. How many trucks does the dealer presently have?
December 14, 2013

physics
a .2 kg ball is being swung around a verticle circle from a 1 m long string, the ball is traveling at 4 m/s counter -clockwise. what is the tension on the string?
December 8, 2013

science
If an automobile engine delivers 40.2 hp of power, how much time will it take for the engine to do 5.90 ✕ 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.)
December 3, 2013

4th Grade Math: Help Is Needed ASAP
My son is in the fourth grade and is needing help with these math problems. Can someone please help him with these problems. 1. 2/3+2/9= 2. 3/5+3/10= 3. 5/12+1/3= 4. Find the sum of 1/6 and 1/12 5. Add 1/4 to the answer in Exercise 4. 6. What is the sum of 1/8, 1/4, and 3/8? 7...
November 18, 2013

TO ANY MATH HELPERS
1) x= -.5 y= -.5 2) x=.5 y=5
November 18, 2013

English
Zach used to work at an independent record label. Negotiating could be exciting, but he was supposed to slant everything in the label’s favor. Some reps used questionable tactics. He couldn’t look at himself in the mirror if he treated people like that. First ...
November 18, 2013

English
When the servers arrived, Jack gave them the information on today's specials. He talked enthusiastically about the fresh berries: "They look fantastic! I want to serve them with shortcake." 1. In the above passage, "talked" is an example of a(n): a)...
November 18, 2013

Math 5th grade
Thank you Ms. Sue!
November 11, 2013

Math 5th grade
1. 16/40, 24/60 2. 24/30, 36/45 3. 24/40, 36/60
November 11, 2013

Math 5th grade
write two fractions that are equivalent to each fraction. 1. 8/20 2. 12/15 3. 12/20 Can u please show me
November 11, 2013

Math 5th grade
Write two fractions that are equivalent to each fraction. 1. 2/5 2. 21/35
November 11, 2013

English... Urgent
Hi this is a mystery problem can you solve this? The best forger of all time was indeed a most brilliant artist and a man respected and sought after in the criminal world. One day he was asked to copy $50 notes but the police searched his premises before be even got started ...
October 26, 2013

English... Urgent
Look at the following puzzles and try to decipher the well known sayings 1. Ban ana 2.nafish nafish 3.japmadean 4.issue issue issue issue issue issue issue issue issue issue 5. Lookuleap Note that I have not typed any of these words wrong
October 26, 2013

Algebra II
Having trouble solving this... Write the equation if a line that goes through (6,-1/2) and has an x-intercept of 5x-2y=-20 I think the x-intercept is -4, but I don't know what to do with that.
October 24, 2013

physics
Ok so im looking for minimum avg power for a 38 kg boy to climb a 170 m building that takes 10.2 min include only work done against gravity
October 14, 2013

English
Hi this is a rebus can you answer it? ECNALG
October 12, 2013

English
Hi this is a rebus question, can you answer it? ECNALG
October 12, 2013

English
Hi this a rebus, can you answer it? TEEXAMRM
October 12, 2013

English
Hi this is a rebus, can you answer it? KNEE LIGHT
October 12, 2013

spanish
lol
October 7, 2013

economics
According to the permanent income hypothesis, households will tend to react to a temporary tax cut by? A) assuming the new tax level will be permanent. B) saving most of the additional disposable income. C) increasing consumption sharply in response to the higher disposable ...
October 3, 2013

Contempoary Mthematics
the amount of money
October 3, 2013

Algebra 2
| t - 7 | + 3 > or = 4
September 24, 2013

Calculus
nevermind it won't accept ANY answer now so it doesn't matter
September 24, 2013

Calculus
6/ln[x] find the derivative... im coming up with -6/x*(ln(x))^2 but it isn't accepting the answer what am i doing wrong?
September 24, 2013

Calculus
I hate these Y= (Square root of x) - 2 ________________________ (square root of x) + 2 Calculate dy/dx Please help, thank you
September 23, 2013

PSY202
CHERINE IS A GOOD LISTENER AND UNDERSTANDS NON-VERBAL COMMUNICATION. SHOWS A HIGH DEGREE OF A:BODILY-KINESTHETIC INTELLIGENCE B:SPATIAL INTELLIGENCE. C:INTERPERSONAL INTELLIGENCE. D:INTRAPERSONAL INTELLIGENCE.
September 17, 2013

Chemistry
why is it impossible to completely separate ethanol from water?
September 16, 2013

Chemistry
why is it impossible to completely separate ethanol from water?
September 16, 2013

Maths
9 is a very strange digit. Try to use four nines 9999 and normal operations plus minus multiply divide brackets etc, use 4 nines to make 100
September 13, 2013

Maths
9 is a very strange digit. Try to use four nines 9999 and normal operations plus minus multiply divide brackets etc, use 4 nines to make 20
September 13, 2013

Maths
A bookshelf has 5 shelves its made from wood that is 30 mm thick and the shelves are evenly spaced Bookshelf is 2100mm high 600mm long and 300mm wide Mark out the sides and shelves from a piece of wood 2400mm long and 1200mm wide a saw cut is approximately 3 mm thick
September 13, 2013

Maths
Can you use 4 fours 4444 and normal operations to arrive at 4?
September 13, 2013

Maths
Can you use 4 nines 9999 And normal operations to arrive at 100
September 13, 2013

Maths
Can you use 4 nines 9999 and normal operations to arrive at 20?
September 13, 2013

algebra
The perimeter of a square is 12cm greater than that of another square. It's area exceeds the area of the other by 39cm^2. Find the perimeter of each square. I don't get how to set this up.
September 10, 2013

Algebra2
The perimeter of a square is 12 cm greater than that of another square. It's area exceeds the area of the other by 39 cm^2. Find the perimeter of each square.
September 10, 2013

Maths do not see my last question displayed wrong
Use two straight cuts to break the figure below into three pieces and re arrange them to from a square 12345 are the squares 1 234 5
August 31, 2013

geometry
Can you use two straight cuts to break the figure below into three pieces 5 squares numbered 12345 5 123 4
August 30, 2013

Science
Two south poles or two north poles are called...
August 30, 2013

Algebra
Membership cost 900 and 20 per round. Different club charges 1500 and 14 per round with 15 rounds free. After how many rounds does second membership become cheaper. Need the equation.
August 16, 2013

Math
1 2/3 + 2/3= 2 4/3 ? 5 3/8 - 1 1/8= 4 1/4 ? 3/4 + 5= 5 3/4 ?
August 5, 2013

Math
(A). 4 3/12? (B). 3 5/9
August 5, 2013

Math
5-3/12=? and 7 8/9 - 4 3/9=
August 5, 2013

Math
Got it right!! THANK YOU!!
August 5, 2013

Math
8/9 x 11/12=
August 5, 2013

Math
What should I invest now to have $15,000 in 12 years at a compounded monthly rate of 1.6%?
July 17, 2013

math
To determine the compound amount of an investment of $10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment.
July 1, 2013

math
What would be the compound amount after 19 years on an investment of $42,000 with an 11% interest rate compounded annually?
July 1, 2013

Contemporary math
Using the Compound Interest Table, calculate the compound amount after 5 years for an investment of $7,700 at 6% interest compounded quarterly. My answer is $10,370.82 is this correct?
July 1, 2013

Physics
A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the floor on the crate. ...
June 21, 2013

Physics
A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the floor on the crate.
June 21, 2013

conditional sentence
1 is "c" The third conditional or past unreal conditional describes a condition that can not be met because the opportunity is past. When did the system fail? It failed in the past, last night.
June 12, 2013

Physics
Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.835. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ω·m, and that of aluminum to be 2.82 x 10-8 Ω&...
June 5, 2013

Math
It'll be an ellipse. The domain -3, 3. The range -2 2. Am I right?
May 30, 2013

Math
What type of conic section is given by the equation 4x^2+9y^2=36? What are its domain and range?
May 30, 2013

Algebra
5 Couples, having dinner before the prom are to be seated at a circular table. In how many ways can this occur if the seating must be boy girl, boy girl?
May 23, 2013

Physics
A Carnot refrigerator is used in a kitchen in which the temperature is kept at 301 K. This refrigerator uses 216 J of work to remove 2360 J of heat from the food inside. What is the temperature inside the refrigerator?
May 5, 2013

Physics
A lawnmower engine with an efficiency of 0.29 rejects 5500 J of heat every second. What is the magnitude of the work that the engine does in one second?
May 5, 2013

Physics
Assume that the pressure is one atmosphere and determine the heat in joules required to produce 2.99 kg of water vapor at 100.0 °C, starting with (a)2.99 kg of water at 100.0 °C and (b)2.99 kg of liquid water at 0.0 °C.
May 5, 2013

Physics
An ice chest at a beach party contains 12 cans of soda at 2.45 °C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 9.60-kg watermelon at 25.3 °C to the chest. The specific heat capacity of watermelon is nearly ...
May 5, 2013

Elements of Calculus
A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30) where the production output in 1 day is x kayaks. If production is increasing at 3 kayaks per day when production is 40 kayaks per day, find the rate of...
May 3, 2013

Elements of Calculus
A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30) where the production output in 1 day is x kayaks. If production is increasing at 3 kayaks per day when production is 40 kayaks per day, find the rate of...
May 2, 2013

Elements of Calc.
A 17 foot ladder is placed against a wall. if the foot of the ladder is pushed toward the wall at 0.5 feet per second, how fast is the top of the ladder rising when the foot is 8 feet from the wall?
May 1, 2013

Physics
A person is standing outdoors in the shade where the temperature is 22 °C. (a) What is the radiant energy absorbed per second by his head when it is covered with hair? The surface area of the hair (assumed to be flat) is 180 cm2 and its emissivity is 0.84. (b) What would ...
April 30, 2013

Physics
The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 250 J/s. The energy is transferred a distance of 1.7 x 10-3 m through a body whose surface area is 1.8 m2. Assuming that the thermal conductivity is that of body fat, ...
April 30, 2013

Math
Thanks Ms. Sue!!! That's what I got!!!
April 22, 2013

Math
Add and convert 4-4/5 + 3-3/5=
April 22, 2013

Math
Using a ruler to draw a square with a perimeter of 48ft, and using the scale 6ft=1/2in (Hint: to find the length of each side, divide 48ft by 4). How should this problem look?
April 19, 2013

MATH
Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...
April 15, 2013

tax accounting
purchased a bond on August 15, 2012 for $2,100. $200 of the purchase price represented accrued interest. She received $210 in interest income on the bond on December 1, 2012. What is the proper treatment of the $210 interest income for federal income tax purposes?
April 14, 2013

Finance
lisa borrowed $8000.00 on an 8%, 60 day note after 15 days she paid $2000.00 on the note , on day 45 , she paid $1000.00 on the note. What is the total interest and ending balance due by us rule by ordinary interest
April 12, 2013

Physics
Could you help me out with any of these questions?
April 10, 2013

Physics
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the glass at the same angle of refraction. The red light has an angle of incidence of 20.97°. What is the angle of incidence of the violet light? ...
April 10, 2013

Physics
When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the lens to record an image of an object that is 4.30 m from the lens. The same lens is then used in a projector (as in the second drawing), with the ...
April 10, 2013

Physics
A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 36.00°. The indices of refraction for the blue and red components of the ray are: blue (ndiamond = 2.444, ncrown glass = 1.531), and red (ndiamond = 2.410, ncrown glass = 1.520). ...
April 10, 2013

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