Thursday
October 30, 2014

Posts by Maddy


Total # Posts: 117

math
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October 18, 2014

Chemistry
3p orbitals 2sp and 2p orbitals 6sp3d2 orbitals
May 2, 2014

Math
fun
April 15, 2014

Math
Jason Printing has $85,000 to invest. They can invest in Wilder Revenue at 10% compounded semiannually or at Cheapskate Investments at 9.8% compounded monthly. a) Calculate the two APYs and compare them to determine your answer. Make sure to distinguish which APY belongs to ...
April 15, 2014

Math
Jason Printing has $85,000 to invest. They can invest in Wilder Revenue at 10% compounded semiannually or at Cheapskate Investments at 9.8% compounded monthly. a. Calculate the two APYs and compare them to determine your answer. Make sure to distinguish which APY belongs to ...
April 14, 2014

algebra
Show all steps, combine like terms what is a simple form of the expression-3(-4y+3)+7y
February 23, 2014

algebra
Solve the compound inequality-2<2x-4<4 answers are 0<x<-2,, 1<x<4, 1<x<0,, 3<x<6
February 23, 2014

algebra
Name the property of real numbers illustrated by the equation 2·(8·7)=(2·8)·7 answers are. Distributive property ,associative property multiplication, Communicative property multiplication, Associative property addition
February 23, 2014

PreCalc
stacey is standing 5 miles west of the control tower at an airport. A plane took off traveling directly north of the control tower at a rate of 180 mph along the ground at a constant angle of 15 degrees. A)after 12 minutes, what is the angel between Stacey and the plane along ...
February 9, 2014

Calculus!!!
A piece of wire 28 m long is cut into two pieces. One piece is bent into a square and the other is bent into a circle. (a) How much wire should be used for the square in order to maximize the total area? (b) How much wire should be used for the square in order to minimize the ...
November 5, 2013

Maths
Hi I have a maths problem I can't figure out please someone help. Zac had some 2c stamps and 5c stamps.he needed to put 30c on a postcard to mail it.what combinations of stamps could he use.
August 13, 2013

physics
An oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat energy. If the light bulb converts 75% of the electrical energy to thermal energy, and the oven is ...
May 30, 2013

physics
A 5.0 ball is initially sitting at rest on top of a 41 m high hill. The ball is pushed with a force of 25 N for 3.0 s toward the edge of a hill. Upon reaching the edge, the ball is allowed to roll down the hill where it reaches the flat ground. To the nearest mile per hour, ...
May 30, 2013

algebra 2
two resistors are connected in parallel. their resistances are 8 ohms and 17ohms. what is the resistance of the combonation.
May 27, 2013

algebra 2
if a rock is dropped from the top of a 200 ft building, solve for the time it takes for it to hit the ground. (when h=0) hint-initial velocity when dropped is 0
May 26, 2013

Math- Precalculus
Write the expression as the sine, cosine, tangent of an angle (in radians.) (tan(pi/5)-tan(pi/3))/(1+tan(pi/5)tan(pi/3))
May 20, 2013

Math
help please lol.
April 22, 2013

Math
Solve. 10/3x + 4/3 = 7 + x/2x A) x = 1/3 B) x = 17/5x C) x = 1/5 D) x = 1/6 thinking it's A.. help?(:
April 22, 2013

Math
Solve. x+12/x+4 = x/x+8 A) x=-4 B) x=8 C) x=6 D) x=-6 thinking that it's B.. help?(:
April 22, 2013

Physics
Thank you!
February 3, 2013

Physics
Two resistors 3 Ù and 6 Ù are connected in parallel across a 6 V battery. What is the current flow through the 3 Ù resistor?
February 3, 2013

Algebra 1
What is 5x cubed over x squared multiplied by 3x to the fourth power over 6x?
November 27, 2012

math
A pair of dice is rolled once. suppose you lose $9 if the dice sum to 9 and win $11 if the dice sum to 4 or 6. how much should you win or lose if any other number turns up in order for the game to be fair?
October 23, 2012

statistics
How do you calculate the degrees of freedom for unequal sample sizes and unequal variance (independent t test)
October 6, 2012

Predicate and subjects
1. The smell of cooking is delicious to the hungry camper. 2. A good fire is difficult to build. looking for simple subject and predicate 1, smell. Predicate. Camper subject 2. Fire subject. Build predicate
September 30, 2012

chemistry
A reaction has ÄH = -378 kJ and ÄS = -37 J/K. Calculate ÄG at 25°C to confirm that the reaction is spontaneous. in kJ
May 15, 2012

chemistry
4 FeO(s) + O2(g) ¨ 2 Fe2O3(s) calculate value of delta H i have done this 4(-272.0)+0->2(-825.5) and the products minus reactants and i got -563 but it is not right?!
May 14, 2012

chemistry
thanks helped with a different question
May 14, 2012

chemistry
nevermind i found it -687
May 14, 2012

chemistry
on my selected thermodynamic data i cant find delta H for SiCl4(L) (i can solve the reaction i just cant figure out what SiCl4(L) is.
May 14, 2012

chemistry
EXTRA CREDIT QUESTION(this is like kinda really hard for me at the moment i got the first one but the others not so much) The city of Celina was ordered by the Ohio EPA in 2003 to resolve its MCL (maximum contaminant level) violations of its drinking water. The Celina water ...
April 26, 2012

Physics
Find the frequency of a wave whose period is 0.320s.
April 12, 2012

Chemistry
I am having trouble answering this. please help! Q: Cereol is a newly discovered compound in corn flakes. A biologist suspects that it increases mental ability. She is making a solution to test on rats. First she makes a stock solution. She discovers that this is too ...
March 31, 2012

spelling
I need to call my lawyer
March 7, 2012

Math
The answer is C
March 7, 2012

Square roots
No its isn't that I found how you do it that would part of it.
March 7, 2012

Square roots
The diagonal of a square has length square root 2 X s, where s is the length of a side of the square. What is the length of the diagonal in a square with sides that are 13 cm? Round your answer to the nearest tenth.
March 7, 2012

Physics3
The answer is 2. Fnet=Sqrt of 2 F
February 12, 2012

science
A 68.4g sample of Potassium Chloride was added to 200g of water at 20 degrees celsius. Is the solution saturated, unsaturated, or supersaturated?
January 3, 2012

Chemistry
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 625 of a solution that has a concentration of ions of 0.800
October 13, 2011

AgBio1
Evidence shows that hippos and whales are closely related organisms. How might evolution and adaptation account for similarities and differences between them.?
September 5, 2011

Pre-Calc
How would I solve: X^(4/3)+X^(2/3)=28
June 23, 2011

geography
I have the same essay question. here's part of my notes...the eastern part of the Taklimakan desert receives less than 0.5 inches of rain per year...hope i helped!!
May 7, 2011

chemistry
What volume of 0.406 M KOH is required to completely react with 18.50 mL of 0.287 M H2SO4?
February 22, 2011

chemistry
What is the concentration of HCl in a 250.0 mL sample of hydrochloric acid if 15.5 mL of 0.0100 M NaOH is needed to react with all the HCl?
February 22, 2011

chemistry
Calculate the volkume of 0.750 M KNO3 that contains 17.0 grams of KNO3?
February 22, 2011

chemistry
How many grams of sodium hydroxide are required to prepare 500 mL of 0.500 M NaOH?
February 22, 2011

Physics
Compare the gravitational force on an 11 kg mass at the surface of the Earth (with radius 6.3 X 10^6 m and mass 6 X 10^24 kg) with that on the surface of the Moon (with mass 1/81.3 ME and radius 0.27 RE). What is the force on the Earth? What is the force on the moon?
February 20, 2011

Physics
Compare the gravitational force on an 11 kg mass at the surface of the Earth (with radius 6.3 X 10^6 m and mass 6 X 10^24 kg) with that on the surface of the Moon (with mass 1/81.3 ME and radius 0.27 RE). What is the force on the Earth? What is the force on the moon?
February 20, 2011

Physics
A roller-coaster car with a mass of 500 kg starts at rest from point A, which is 46 m above the ground. At point B, it is 23 m above the ground.
February 2, 2011

Friendship(Shakespeare)
Thanks a ton for the sites Writeacher:)
January 24, 2011

Friendship(Shakespeare)
Friendship can break the inner you, form the newer you and turn you into someone whom you've never imagined to become. From arrogant, it can turn you to someone compassionate, and can change someone from generous to discourteous.
January 24, 2011

Friendship(Shakespeare)
Frienship is what one seeks for when they are forlorn.
January 24, 2011

Friendship(Shakespeare)
Friendship is not expressed from the mind, but the heart. It is an abounding relation which one could ever sense. Do you know of any Shakespearean translator online?
January 24, 2011

Friendship(Shakespeare)
Is there a shakespearean translator online?
January 24, 2011

Friendship(Shakespeare)
I'm trying to write a few sentences about what I believe friendship is. I really love Shakespeare's literature, and want to write the sentences like his. Friendship sy ne expressed fram the mind, but the soul. It is se abounding consanguinity which one could ever sense.
January 24, 2011

Chemistry-Help Dr. Bob222
Would that still equal a pH of 3.1?
December 14, 2010

Chemistry-Help Dr. Bob222
The problem was 6.4 x 10^-6. Thanks
December 14, 2010

Chemistry-Help Dr. Bob222
The equation I'm trying to use looks like this: 1.0 x 10^-14 divided by 6.4 x 10^-6 which gives me a solution of 1.5625 x 10^-9 which can't be right!
December 14, 2010

Chemistry-Help Dr. Bob222
Thanks, totally still confused. I don't know how to solve for (x) since I don't know what the acid is?
December 14, 2010

Chemistry-Help Dr. Bob222
If a weak acid has a dissociation constant of 6.4 x 10^-6, what is the pH of a solution of this acid in a 0.10 molar concentration? I still don't understand the equation you gave me. My textbook doesn't break it down like this, so I'm confused as to where to plug ...
December 14, 2010

Chemistry-pH problem
If a weak acid has a dissociation constant of 6.4 x 10(-6), what is the pH of a solution of this acid in 0.10 molar concentration?
December 13, 2010

Chemistry-Confused by titration!!
If a 28 mLs of a 0.25 molar NaOH solution is used to titrate 14 mLs of a nitric acid to its phenolphthalein endpoint, what is the molar concentration of the acid?
December 13, 2010

Math
Can 252/1663 be simplified? If it can be simplified, what is the new simplified fraction?
November 22, 2010

math 11
Please help this question is from my unit on linear programing and I'm having trouble completing it. A company manufactures bicycles and tricycles. The total number of frames the company manufactures cannot exceed 80 per month. It takes the company 1 hour to assemble a ...
November 16, 2010

math (linear programing problem)
Please help this question is from my unit on linear programing and I'm having trouble completing it. A company manufactures bicycles and tricycles. The total number of frames the company manufactures cannot exceed 80 per month. It takes the company 1 hour to assemble a ...
November 16, 2010

AP Physics
Jean, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from Dulles Airport (Fig. 4-55). She notices that the string makes an angle of 24° with respect to the vertical while the aircraft accelerates for ...
November 14, 2010

AP Physics
An 18.0 kg box is released on a 35.0° incline and accelerates down the incline at 0.269 m/s2. Find the friction force impeding its motion. How large is the coefficient of friction?
November 14, 2010

6th grade
They are all on at different times. None retelevised
November 4, 2010

6th grade
There are 3 parades on Cable Tv in the morning, 2 in the afternoon and 4 at night. How Many different combinations of parades can Ty watch?
November 4, 2010

math
your welcome
November 3, 2010

math
3/16=x/96 96(3)=16x 288=16x 288/16=16x/16 x=18
November 3, 2010

Math
-5+r=2r+3 what does r equal
November 2, 2010

physics
A daredevil leaves the end of a ramp with a speed of 32.0 m/s if his speed is 29.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? how do i do thiss?
October 23, 2010

physics
A daredevil leaves the end of a ramp with a speed of 32.0 m/s if his speed is 29.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? how do i do thiss?
October 23, 2010

physics
Find the height from which you would have to drop a ball so that it would have a speed of 6.4 m/s just before it hits the ground.
October 23, 2010

math11
I have several questions similar to this one and was wondering if you could walk me through this one. I'm totally lost on how to do it. Paramecia reproduce by splitting in two. In a laboratory flask, a colony of paramecia had an initial population of 500. Each day, the ...
October 19, 2010

physics
One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h. If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away? how do i do ...
September 30, 2010

Physics
HOW DO I DO THIS? A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 28.0 m/s. A net is positioned a horizontal distance of 51.0 m from the cannon. At what height above the cannon should the net be placed in order to catch the daredevil?
September 30, 2010

Math
Teaneck High had an enrollment of 11040 in 1985 and an enrollment of 12100 in year 1998. What is the predicted enrollment of Teaneck High in 2014 if we assume a linear model?
September 24, 2010

Math (Algebra Grade 8)
x=-6
September 21, 2010

Biology (muscle response)
Suppose you are asleep and the doorbell rings. You stumble to your feet and move toward the door, open it and speek with your visitor. Think of the many changes occurring in your body as you awaken and respond. How does the three types of muscle tissue help? I'm having ...
August 14, 2010

Geometry
I;m so lost with these questiona. Any help will be appreciated. 1. Find the area of a square if one side measures 27 centimeters. 2. Exactly how many cubic inches of air can a fully inflated basketball hold if its radius is 4.2 inches? Use Pi 3. How many cubic centimeters can ...
July 21, 2010

Physics
Find the height from which you would have to drop a ball so that it would have a speed of 6.4 m/s just before it hits the ground.
July 1, 2010

Physics
A hypothesis says the upper limit in frequency a human ear can hear can be determined by the diameter of the eardrum, which should have approximately the same diameter as the wavelength at the upper limit. Using the hypothesis what would be the radius of the eardrumfor a ...
February 21, 2010

Pre-Calc (Follow-up with Bob Pursley)
For the below problem, I solved it as you suggested and got k=.0486 When I did 300,000 = 122,000e^.0486t I got about 18.5 years for when the sewer system would need to be updated. Next, for how many people will the new system have to accommodate for the system to last 15 years...
January 10, 2010

pre-calc
The city planners of bakersfield, CA are studying the current and future needs of the city. The sewage system they have in place now can support 300,000 residents. The current population of the city is 180,000, up from 122,000 eight years ago. Assuming that the population will...
January 8, 2010

Math
1.D
September 5, 2009

scientist
who was the greatest 20th century scientist?
July 15, 2009

5th grade math
$4.25 Was how much he made per hour
April 15, 2009

math
Farmer Brown had ducks and cows. One day she noticed that the animals had a total of 12 heads and 32 feet. How many of the animals were ducks and how many were cows?
March 16, 2009

alegbra
First find the slope, by using y2-y1/x2-x1,and then plug in either one of the ordered pairs into y=mx+b, to find b,the y-intercept. then plug in the slope for m and the y-intercept for b, and youve got it!
March 16, 2009

1st grade
Is this sentence correct Breakfast Is Served Between 6:30 AM & 10:30 AM
March 13, 2009

1st grade
I would agree that this is not first grade math at all. The only thing that I could come up with is a cube. I didn't learn anything like this when I was in first grade.
March 13, 2009

math
I need to know if the following are independent dependent or inconsistent, y=-3x+19 y=2x-1 y=-4x-7 y=3x
November 17, 2008

math
solve: perimenter of triangle perimeter is 12 meters determine values x, x+1, and x+2 x(x+1)+(x+2)=12
November 5, 2008

Math
Need help in solving 0.5b+3.4=0.2b+12.4
November 3, 2008

algebra with pizzazz
i have this work sheet right now, and i dont know the answer
October 19, 2008

pre- algebra
i have tried and i cant figure it out. why do you think i posted it on here?
September 8, 2008

pre- algebra
Use the digits 1-9 in order. Insert operation signs and grouping symols to get a value of 100.
September 8, 2008

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