Thursday
September 18, 2014

Posts by tiffany


Total # Posts: 799

MATH
3 OUT OF EVERY 4 STUDENT HAVE A COMPUTER AT HOME IF THERE ARE80 STUDENTS HOW MANY HAVE COMPUTERS AT HOME
November 22, 2010

MATH
IN A CLASS 3 OUT OF EVERY 7 STUDENT ARE MALES IF THERE ARE 27 MALES HOW MANY STUDENT ARE IN THE CLASS
November 22, 2010

12th Grade Government
Why was it important to the Founding Fathers to justify their actions by evoking traditional English rights?
November 22, 2010

12th Grade Government
_____ believed that there should be no limits to the power of the government once the will of the people was determined.
November 22, 2010

physics
Suppose I have a spring. I add a mass (m = 1.0 kg) and it is displaced by 15 cm. What is the spring constant k in units of (N/m)?
November 18, 2010

Accounting
Need help with this bank reconciliation...this is actually for a job and I am forgetting everything about accounting because I am nervous. BANK RECONCILATION ============================================== On Aug 14th, One of our Partner's ( Compuville ) cash book showed a ...
November 17, 2010

algebra
Use muliplying by 1 to find an expression equivalent to 10/13 with a dominator of 39a Please kindly help. I don't understand what to do. Thanks!
November 14, 2010

math116
-8x-27=-32 1/5 the solution must be in the form as an integer or simplified fraction. Thank you.
November 12, 2010

PHYSICS ---HELP!
A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein . The inside diameter of the 4.8 cm long needle is 0.48 mm, and the required flow rate is 4.9 cm/3 of blood per minute. How high should the ...
November 12, 2010

physics
Blood from an animal is placed in a bottle 2.0 m above a 3.4 cm long needle, of inside diameter 0.35 mm, from which it flows at a rate of 2.9 cm^3/min. What is the viscosity of this blood? Assume Pblood}=1.05 * 10^3 kg/m^3.
November 11, 2010

chemistry
a 5% acetic acid solution contains -----grams of acetic acid per ------
November 11, 2010

College Algebra
USE MULTIPLICATION PRINCIPLE - X/2 = 8 X=_________ I APPRECIATE THE HELP!
November 8, 2010

math
complete the order triple 8x-y+z=22, 4x+2y-3z=13, x-3y+2x=-6
November 7, 2010

Alg & Trig 2
find the sum of 1/2, 2/7x, and 5/x
November 5, 2010

Alg & Trig 2
find the sum of 1/2, 2/7x, and 5/x
November 5, 2010

intro chem HELp please
Jizz
November 5, 2010

Chemistry
Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
October 31, 2010

Business
Which economic system is the best solution to handling a crisis of epic proportion?
October 29, 2010

Physics Help!!
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 26, 2010

science
Which of the following chemical reactions is written to show that mass is conserved? A H2O to H2+O2 B CH4+202 to CO2+2H2O C Mg+HCI to 3MgCI0+H2 D N2+H2 to NH
October 26, 2010

Physics
A 3.6 m diameter merry-go-round is rotating freely with an angular velocity of 0.78 rad/s. Its total moment of inertia is 1700 kg m^2. Four people standing on the ground, each of mass 62 kg, suddenly step onto the edge of the merry-go-round. What is the angular velocity of the...
October 26, 2010

English
Idententify the sentence parts - Whose car did the parking attendant tow yesterday?
October 25, 2010

consumer math
$400.OO
October 20, 2010

Finance
what is the present value of 1000 paid at the end of each of the next 100 years if the interest rate is 7% per year
October 17, 2010

College Algebra and Trig
a rancher has 12,000 feet of fence to enclose 5 adjacent pens. determine the outer rectangular dimensions that result the maximum enclosed area.
October 14, 2010

math
Erica took 2 days to drive 1,020 miles. On the first day she drove 10 hours at an average spped of 62 mile per hour. on the second day, her average spped was 57 miles per hour. approx. how long did she drive on the 2nd day?
October 11, 2010

geometry
A manufacturer wants to make a rectangular storage box with volume 0.75 cubic meters, length 1.5 meters and width 0.4 meters. What is the height of the box?
October 11, 2010

math
the coordinates of triangle KLM are K(-2,-5), L(0,1), M(6,-2) What type of triangle is KLM? A) obtuse isosceles B) acute scalene C) right isosceles D) right scalene
October 11, 2010

GEOMETRY
Alicia is 5ft tall. she casts a shadow that measures 6 1/2 feet long at the same time that a sculpture in the park casts a shadow 12 ft long. which of the following is the approximate height of the sculpture? a) 2.0 miles b) 6.6 miles c) 12 miles d) 15.6 miles
October 11, 2010

Ohlone
6moles
October 7, 2010

math
how do you find the function of the domaine
October 5, 2010

Chem.
Suppose that 55 mL of 0.2 M LiOH and 55 mL of 0.3 M HNO2 are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.?
October 4, 2010

Chemistry
NH4+ OH-=NH3+H20
October 4, 2010

Chemistry
NH4+ + OH- NH3 + H2O What is the K for the reaction above in terms of Ka's, Kb's, Kw etc.?
October 4, 2010

Psychology
What different tools of psychology help us with work and everyday life situations?
October 3, 2010

Chemistry
Calculate the solubility of LaF3 in grams per liter in the following solutions. The Ksp of LaF3 is 2.01 e-19. (a) pure water (b) 0.051 M KF solution (c) 0.065 M LaCl3 solution
October 1, 2010

physics
Your groceries are in a bag with paper handles. The handles will tear off if a force greater than 59 N is applied to them. (a) What is the greatest mass of groceries that can be lifted safely with this bag, given that the bag is raised with constant speed? kg (b) What if it is...
September 30, 2010

reading
see Marjorie's personality as shallow
September 28, 2010

math
-2(-5+2)-3(3-4)-5
September 25, 2010

math
on a single day the temperature in alaska dropped from a high of -12 f to a low of -50. what os the difference between the high and low temperatures
September 25, 2010

Chemistry
3H2(g)+N2(g)=2NH3(g) Suppose the equilibrium constant Kp = 0.003337 for the reaction above. If the equilibrium mixture contains partial pressures H2 = 0.400 atm and N2 = 0.350 atm. What is the equilibrium partial pressure of NH3 in atm?
September 23, 2010

physics
A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 2.5 s, how tall is the building?
September 20, 2010

Algebra
how do you factor 4c^3-500 ?
September 11, 2010

art
please help me pick a favorite harlem Renaissance name of the picture date/time material used. and used for and symbolism
September 11, 2010

college art
please help me pick a favorite harlem Renaissance name of the picture date/time material used. and used for and symbolism
September 11, 2010

physics
A truck covers 40.0 m in 8.60 s while smoothly slowing down to a final velocity of 2.00 m/s. (a) Find the truck's original speed. (b) Find its acceleration.
September 10, 2010

Chemistry
Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m A 16.0 g sample of a compound known to contain 3 ion species is dissolved in 100. g of water. The boiling point of the solution is 103.6°...
September 9, 2010

Chemistry
If you are making 430.0 g of 0.41 m Na2SO3, how many grams of the solute should you use? I got 20 grams, but I don't think this is the right answer.
September 8, 2010

math
There are about 9ft per yard
September 6, 2010

math
Area= 2(L+W)
September 6, 2010

Grammar
Thank you
September 6, 2010

Grammar
(Check these please)Identify these sentences as compound, simple or run-on sentences. 5. Percy Shelley traveled in Europe and visited friends.(simple) 6. Shelley made friends with other poets; John Keats was Shelley's friend.(compound) 7. William Godwin was another friend...
September 6, 2010

chemistry
Which of the following are solutions? Choose all that apply. (Note: do not pick heterogeneous systems that contain a homogeneous phase.) - Cold coffee or cold tea. -Cigarette smoke. - Tap water. - Milk. - Fog. - The air typically found in a room. - Pure water.
September 6, 2010

chemistry
11:54Am
September 3, 2010

Grammar
Thank you
August 30, 2010

Grammar
Is this one right. The most likely theory, perhaps,/called it a comet of tiny pieces of metal.
August 30, 2010

Grammar
Seperate the complete subject and the complete predicate. There are many theories/ about the Tunguska Fireball. Is this right?
August 30, 2010

science
A mixture of two gases, Xe and H2, has the properties listed below. PXe=190torr PT=250torr What is the ΧH2 for this mixture? I'm sorry I really don't get this.
August 26, 2010

science
A mixture of two gases, C2H2 and H2, has the properties listed below. nC2H2=0.028moles nH2=0.015moles PC2H2=79torr What is the PT for this mixture? I first found out the mole fraction by first adding H2 and C2H2 and got 0.043, then did 0.028/0.043. I rounded it to 0.651. I ...
August 25, 2010

science
oops the "t" is supposed to be a capital one, if that means anything.
August 24, 2010

science
Could anyone please explain this formula to me, and give me an example of how it is used? Pa=Xa*Pt the "a" and the "t" are subscripts.
August 24, 2010

MATH
use these facts to find the equation for the circle center (0,0), radius=6 a)x2-y2=36 b)x2+y2=36 c)x2-y2=6 d)x2+y2=6
July 14, 2010

math
in square ABCD, AD=3x+7 and CD=6x+6 Find AD and CD A)1/3 B)16 C)3 D)8
July 13, 2010

MATH
In isosceles trapezoid ABCD, AB=22, CD=34 and AC=10. Find BD A)28 B)5 C)10 D)35
July 13, 2010

math
using the law of detachment, what can be concluded regarding the following statements: If a figure is a rhombus, then it is an eqilateral quadrilateral. A square is a rhombus. a) a rhombus is a square b) a square is a rhombus c) a square is an equilateral quadrilateral d) an ...
July 13, 2010

math
which statement is biconditional a)if x=5, then 2x+3=13 b)if two angles are a linear pair, then they = 180 degrees c) if the car runs out of gas, then it will stop d) if a figure is square, then it has four sides
July 13, 2010

math
simplify -2(-6y+2) +4y(4z+5y)
July 11, 2010

Chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 750 mL of a solution that has a concentration of Na^+ ions of 1.3 M? Express your answer numerically in grams.
July 7, 2010

Chemistry
A student placed 17.0 g of glucose (C_6H_{12}O_6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100 mL mark on the neck of the flask was reached. The flask was then shaken until the solution was ...
July 7, 2010

Chemistry
How many kilograms of chlorine are in 22 kg of each of the following chlorofluorocarbons CFCs? 1.CF2Cl2 2.CFCl3 3.C2F3Cl3 4.CF3Cl
July 7, 2010

Chemistry
Determine the number of moles of oxygen atoms in each of the following. 5.91mol H2O2 2.7mol N2O 2.23mol CO2
July 7, 2010

Chemistry
Silver chloride, often used in silver plating, contains 75.27% Ag. Calculate the mass of silver chloride required to plate 195mg of pure silver.
July 7, 2010

Chemistry
Upon decomposition, one sample of magnesium fluoride produced 1.64 kg of magnesium and 2.57 kg of fluorine. A second sample produced 1.38 kg of magnesium. How much fluorine (in grams) did the second sample produce?
July 7, 2010

college chemisrty
A cylinder with a movable piston contains 2.00 of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....
July 7, 2010

college chemisrty
A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 and the initial pressure of chlorine was 1.65 . The piston was pushed down to change the volume to 1.00 . Calculate the final pressure of the gas if the ...
July 7, 2010

college chemistry
A closed container is filled with oxygen. The pressure in the container is 325 . What is the pressure in millimeters of mercury?
July 7, 2010

chemistry
Imagine that you have a 7.00 gas tank and a 3.50 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 115 , to what pressure should you fill the ...
July 7, 2010

MATH
a picture measures 16inches wide by 20inches long. if the frame is to be 20inches wide, what is the scale factor of the frame as a dilation of the picture, and what is the length of the frame?
July 7, 2010

math
which of the following triangles is both an obtuse triangle and isosceles triangle. A triangle with angles measuring: a) 60,60,60 b) 120,30,30 c) 110,15,55 d) 30,70,80
July 7, 2010

math
a picture measures 16inches wide by 20inches long. if the frame is to be 20inches wide, what is the scale factor of the frame as a dilation of the picture, and what is the length of the frame?
July 7, 2010

math
Bob constructed a decorative planter using 4inch squares attached to a rectangular base. what is the volume of the planter/
July 7, 2010

math
what is the total surface area in meters of a cylinder that is 12m in diameter and 14m in height
July 7, 2010

math
Victoria has two tea sets that are similar in size. The larger teapot is 12in tall and 6in wide. if the smaller teapot is 8in tall, how wide is it?
July 6, 2010

math
8/30=x/75 solve for x
July 6, 2010

math
Victoria has 2 tea sets that are similar in size. the larger teapot is 12in tall and 6in wide. if the smaller teapot is 8in tall, how wide is it
July 6, 2010

math
if it takes 8 quarts of ice cream to feed 30 people, how many quarts will it take to feed 75 people?
July 6, 2010

math
8/2=12/x what does x equal?
July 6, 2010

english
IN NEED OF HELP. I HAVE A FIVE PAGE ESSAY TO WRITE ON ANTIGONE AND I HAVE NO CLUE WHAT THIS POEM IS TALKING ABOUT. CAN SOMEONE HELP ME PLEASEEEEEEEEEEEEE
July 5, 2010

MATH
DOES ANYONE KNOW HOW TO DO THE GRATEST COMMON FACTOR IN THE 8TH GRADE?
July 3, 2010

algerbra 1
WELL I DONT KNOW BUT I THINK IT IS Y=-3X+3 SO YOU DID GOOD
July 2, 2010

trig
the leg opposite the 50 degree angle in a right triangle measures 8 meters. find the length of the hypotenuse
July 2, 2010

trigonometry
the leg opposite the 50 degree angle measures 8 meters. find the length of the hypotenuse
July 2, 2010

physics
Toby the cat is stuck in a tree. Billys dad placed a ladder 5 ft from the base of the tree and then leaned the ladder against the tree. the top of the ladder is where toby is sitting. if the ladder makes a 65 degree angle with the ground, how far up the tree is the cat?
July 2, 2010

Literature
Post a 150- to 300-word response to the following discussion question by clicking on Reply · Select one essay from this week’s assigned reading, and do the following: 1. Explain the most important difference between an essay and a short story, poem or play. 2. ...
June 22, 2010

PreAlgebra
Write the decimal as an equivalent percent. 0.282
May 29, 2010

human relations
a amjor obstacle to developing good human relations skills is that
May 19, 2010

british literature
DESCRIBE THE TONE OF "THE WANDERER."
May 3, 2010

Chemistry
i can somewhat help with this: temperature is not important so forget that part teke ur ml and convert to L by dividing 880 by 1000 thats as far as I know how to go hope it helps a lil bit ...
May 1, 2010

Chemistry
yep forgot the units sorry.
May 1, 2010

Chemistry
v1- 725/100 = .725 v2 - unknown t1- 240 C +273 K (to convert celcius to kelvin t2 - 54.5 C + 273 K V2 = .725 x 327.5 / 513 v2 = .462841 V2= .46
May 1, 2010

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