Sunday
February 14, 2016

Posts by T

Total # Posts: 370

HELP12
its not b i got that wrong
February 19, 2012

HELP11
i marked that and got that wrong
February 19, 2012

Science
Idk
February 13, 2012

Additional maths
Given one of the roots of the quadratic equation x^2+kx=12 is one third the other root. Find the possible values of k.
February 1, 2012

math
If Julie bought 8 T-shirts, she would be short $28. If she bought 4 T-shirts and 3 baseball hats, she would have $17 left. If each hat cost $5, how much money did she have in the beginning?
January 22, 2012

math
every week Brady gets $2.50 more for his allowance than Max does. They spend $6 on snacks and save the rest. Brady saves $72, but Max saves only $52. How many weeks does it take Brady to save $72? Hoe much money does Max get every week?
January 22, 2012

phyics 2
Object A attracts object B with a gravitational force of 10 newtons from a given distance. If the distance between the two objects is doubled, what is the changed force of attraction between them?
January 19, 2012

algebra
44
January 17, 2012

Physics
Imagine that a person is seated in a chair that is suspended by a rope that goes over a pulley. The person holds the other end of the rope in his or her hands. Assume that the combined mass of the person and chair is M. What is the magnitude of the downward force the person ...
January 16, 2012

Physics
A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N. if the box does not move relative to the wagon, what is the static friction force on the box?
January 16, 2012

Physics
Eh, from what it looks like, it should just be the change in height that you need to do, which will be in units of miles right? and then you multiply that by the ratio of delta V to altitude change, which I believe is in units of (ft/s)/(change in miles)
December 28, 2011

AP Calculus
At what value of h is the rate of increase of √h twice the rate of increase of h? (a) 1/16 (b) 1/4 (c) 1 (d) 2 (e) 4
December 22, 2011

Physics
A diver springs upward with an initial speed of 2.23 m/s from a 3.0-m board. (a) Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = -3.0 m (measured from the board), assuming that the downward direction is chosen...
December 13, 2011

Physics
In preparation for this problem, review Conceptual Example 7. From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 6.46 m/s. (a) What is the acceleration (magnitude and ...
December 13, 2011

chemistry
how many milliliters of dry CO2 measured at STP could be evolved in the reaction between 20.0 mL of 0.100 M NaHCO3 and 30.0 mL of 0.0800 M HCl
December 6, 2011

geometry
ABC is congruent to DEF AB = 11, BC = 14, CA = 20, FD = 4x - 12 Find x
November 20, 2011

algebra
11-(3x-6)+2(4x+5)-7x
November 16, 2011

geometry
If the area of a rectangle is 50cm and two circles are inside which are tangent to each other and the rectangle's side. What is the radius?
November 15, 2011

psychology
Sexual arousal in human beings is different from that of animals. It is clear that human sexual arousal can occur
November 14, 2011

psychology
. Expectation plays an important role in:
November 14, 2011

accounting
What is the future value on 12/31/2014 of a deposit of $10,000 made of 12/31/2010 assuming interest of 16% compound quarterly.
November 14, 2011

Calculus
47
November 4, 2011

Factoring Trinomials
b-6b+8
October 31, 2011

economics
An accountant deposits 100 per month into an account that pays 8% per year compounded quarterly ( no interperiod compounding) How much will she have in 10 years
October 9, 2011

math 9th grade
multiplying a number by x yields the same result as divinding the number by .125. what is tge vaule of it.
October 9, 2011

math
how can you tell where the absolute value of (x^2-1) is differentiable?
September 29, 2011

calc
A basic fact of algebra states that c is a root of a polynomial f(x) if and only if f(x) = (x-c)g(x) for some polynomial g(x). We say that c is a multiple root if f(x) = [(x-c)^2](h(x)) where h(x) is a polynomial. Show that c is a multiple root of f(x) if and only if c is a ...
September 27, 2011

science
a science acrostic full sentencess help!!
September 12, 2011

Physics
try
September 7, 2011

Biology
Not bad. I had the same q and answered it similarly
August 12, 2011

algebra
Five years ago, you bought a house for $171,000. You had a down payment of $35,000, which meant you took out a loan for $136,000. Your interest rate was $5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the following information. ...
August 9, 2011

The Age of Discovery To The American Experiment
The first stirrings of the first Great Awakening took place in
July 13, 2011

American History
In 1700, which of the following colonies had the largest slave population relative to its overall population?
July 13, 2011

American History
In Jefferson's view, George Washington's action in addressing the Whiskey Rebellion
July 13, 2011

Chemistry
2.73 x 10^-4
July 12, 2011

physical science
How long would it take a 20.0 hp motor to lift a 1,000.0 kg crate from the bottom of a freighter's hold to the deck (40.0 m)?
June 23, 2011

physical science
What is the kinetic energy of a 27 kg dog that is running at a speed of 8.3 m/s (about 19 mi/h
May 31, 2011

math
solve 5/8 of 22
May 26, 2011

algebra
What is the value of the expression 2x to the 2nd power + 3xy -4y to the 2nd power when x = 2 and y = -4? please show how to solve this
May 21, 2011

Grammar
This does raise the possibility of early left ventricular failure, however there is no pulmonary edema and no acute infiltrates.
May 9, 2011

social studies
what landform dominates much of Latin America , especially South AMerica?
May 4, 2011

PHYSICS
5.00x 10^-2 mass with charge +0.75 micro coulombs is hung by a thin insulated thread. Charge of -0.9 micro coulombs is held .15meters directly to the right so that the thread makes an angle with the vertical. What is the angle and the tension in the string?
March 29, 2011

stats
sample was obtained from a population with unknown parameters. scores: 6, 12, 0, 3, 4 compute the sample mean and sandard deviation. compute the estimated standard error for M.
March 27, 2011

Finance
since its just after they deposit 1,000 then you multiply 29,000 x .06 = 1740. then add that to 30000 because they just deposited the 1,000. then you get $31,740
March 21, 2011

Physics: Phase changes
how much heat is needed to convert 500g of water at 100 degrees C to steam at 100 degrees C?
March 21, 2011

7th grade Math
divide: 306.52/19.4= 15.8
March 21, 2011

Algebra
You have to plug 4x^2 into the square root. the answer is 2x because the square root of 4 is 2 and then the x just stays with the 2.
March 21, 2011

ECONOMICS
WHAT DO GOVERNMENT STATISTCIANS CALCULATE GDP BY SIMPLY ADDING UP TOTAL SALES OFALL BUSINESSFIRMS IN ONE YEAR?
March 3, 2011

statistics
The population of SAT scores forms a normal distribution with a mean of µ =500 and a standard deviation of σ =100. If the average SAT score calculated for a sample of n = 25 students, a. What is the probability that the sample mean will be greater than ...
February 27, 2011

chemistry
"A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of helium? ...
February 26, 2011

college algebra (maths 112)
actually this is only freshman (HS) math but i still don't remember how to do it
February 24, 2011

Chemistry
Samples of Neon and helium are placed in separate containers connected by a pinched rubber tube. There is 5.00 liters of neon at a pressure of 634 mm Hg in the first container. The second container has 3.00 liters of helium at 522 mm Hg. When the clamp is removed from the ...
February 18, 2011

chemistry
All of the lanthanide metals react with HCl to form compounds having the formula MCl2,MCl3,or MCl4 (where M represents the metallic element). Each metal forms a single compound. A chemist has .250g sample of a transition metal, and wishes to identify the metal. She reacts the ...
February 9, 2011

chemistry
If you have a 37.34g sample of ammonium chromate , how many protons do you have?\
February 9, 2011

algebra 2
suppose a house that costs $270,000 appreciates by 5% each year. in about how many years will the house be worth $350,000? use the equation 350 = (270) (1.05)^x and round the value of x to the nearest year.
February 7, 2011

algebra
(36x^3-60x^2-87x-21)divided by 9x+3
February 3, 2011

math
How could knowing that 35/7 equal 5 help you find 42/7 explain
January 26, 2011

uOFp
Imagine you are conducting fieldwork and discover two groups of mice living on opposite sides of a river. Assuming that you will not disturb the mice, design a study to determine whether these two groups belong to the same species
January 24, 2011

MATH
7 hrs
January 12, 2011

chemistry
How many moles of water, H2O, are present in 75.0 g H2O?
December 15, 2010

science
please help me unscramble oaoptvaien,aionitnrptsa rawdoungete & ntsiocnndeoa
December 13, 2010

sociology
I second that Stine.. I'll give you guys a hint, it has partiality to do with Conflict Theory.
December 3, 2010

Math
Donna and Rod bought a new van at an end of year sale for dealer cost plus 5%. If they paid $17,325.00 what was the dealer cost in dollars?
December 3, 2010

6th grade
wow. i learned something new! thank you both!
December 2, 2010

6th grade
i'm a little shy on X values sorry, but does that help?
December 2, 2010

6th grade
Exuse my ignorance, i'm in algebra 1 honors, but is the 7.50 represented by X? meaning 7.50x1/5?
December 2, 2010

6th grade
1/6
December 2, 2010

math
what is the question? isolate the X?
December 2, 2010

Algebra
can i get a formula?
December 2, 2010

Algebra
Terence wants to estimate the height of a tree. He places a mirror on level ground, as shown in the picture below, and stands so that he can see the top of the tree in the mirror. Since light bounces off the mirror at the same angle at which it strikes the mirror, angle 1 ...
December 2, 2010

6th grade science
magnetite will attract this
November 1, 2010

science
magnetite will attract this
November 1, 2010

Physics( Checking answer)
The first bullet has 2.4 Joules of energy, and the second has 9.6 Joules of energy. The equation is 1/2*m*v^2: You forgot that the mass is given in grams instead of kilograms, so you need to convert to kg (grams/1000, so .003 kg). You also didn't square the velocities. The...
October 31, 2010

Chemisty
A 5M solution is diluted 1/10 and again 1/5. What is the concentration of each dilution?
October 31, 2010

PreCalc
what is the cot of theta if the cos of theta = 4/9 and theta lies in quadrant IV
October 18, 2010

calc
Average daily temp,y, is y=45-23cos(2pi(x-32)/365), where x is time in days, x=1, corresponds to Jan 1 and y is temp in degrees F. Determine the period of the function. Determine critical numbers, over one period. Determine relative extrema, what does relative extrema represents
October 16, 2010

Math
Depreciation of an office machine. Data regarding the value of a particular color copier is represented in the following graph. At what rate is the value changing?
September 29, 2010

chemistry
I don't know
September 3, 2010

college
The value of a mint state 63 uncalculated 1950 Jefferson nickel minted at Denver is 8/7 the value of a 1945 nickel in similar condition minted at Philadelphia. Together the total value of the two coins is 15.00 what is the value of each coin?
August 29, 2010

Math (Very Easy Math)
Simplified-down to lowest terms;cannot be reduced any more. I hope this helped,this is my own definition.
July 24, 2010

CHEMISTRY (WEBWORK)
^^ thats right. i just got it.
July 19, 2010

Physics
While riding her bicycle, she goes from a full stop to 9m/s in 3 minutes. How fast is she acclerating?
July 8, 2010

Algebra
Amy paid $67.15 for a pair of running shoes during a 15% off sale. What was the regular price?
June 10, 2010

Geometry 10th grade
Find the perimeter or given triangle. KLM if JHG~KLM, KM=6, HJ=3, JG= 4, and GH=6. The biggest triangle is FHL. KLM is part of right corner of the big triangle and JHG is the left corner of the big triangle.
June 7, 2010

math
Math:How could the following information be represented as a ration? Of fifty people interview, none had ever eaten sushi. is it 50:0
June 1, 2010

geometry
a rectangle field is 130 m by 420 m. a rectangle barn 19 m is built in the field. how area is left ove?
May 28, 2010

human services
What are some health hazards employees may encounter in human services?
May 26, 2010

chem-redox
write down Oxidation equation, Reduction equation and Overall equation theres 3 equations *H2O2 + H2SO4 + KMnO4 *H2O2 + KMnO4 *and *Ethanol + H2O2 + K2Cr2O7
May 16, 2010

Algebra 2 with trigonometry
2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx
May 6, 2010

Algebra 2 with trigonometry
2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx
May 6, 2010

Algebra 2 with trigonometry
A baseball diamond is a square 90 feet on a side. The pitcher's mound is 60.5 feet from home. How far does the pitcher have to run to cover first? (we are using the LAW OF SINES AND COSINES)
May 6, 2010

chemisty
how many grams of precipitate are produced when 0.300 M K2CrO4(aq) (50.0mL) are added to excess BaCl2(aq)?
May 4, 2010

science
CO2 binds with water to make carbonic acid (H2CO3)
April 28, 2010

critical thinking
Premise- Since most all disease can be effectively prevented by a healthy lifestyle. Conclusion-Animal activist sometimes contend that medical research is unneccessary. Is this a valid/sound argument or is this an ivalid/unsound argument?
April 21, 2010

chem - pressure
i did p1/t1 =p2/t2 converted celsius to kelvin i get 935.5 mmHg for a then 333.2 for b i don't get c
March 31, 2010

chem - pressure
A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to vaporise. The final ...
March 31, 2010

chemistry
A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to vaporise. The final ...
March 31, 2010

chemistry
the answer in the book was 4.3 grams but if you do that you get 169.8731/0.988 which is 171.94 g i don't get it
March 25, 2010

chemistry
it is desired to prepare 250.0mL of a standard solution having a concentration of 0.1000M AgNo3. How many grams of a sample of AgNO3 of 98.8% purity are required for this purpose?
March 25, 2010

chemistry
it is desired to prepare 250.0mL of a standard solution having a concentration of 0.1000M AgNo3. How many grams of a sample of AgNO3 of 98.8% purity are required for this purpose?
March 25, 2010

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