Saturday
August 23, 2014

Posts by Matt


Total # Posts: 1,768

math
find the area of the shaded region in the figure assuming the quadrilateral inside the circle is a square. x^2+y^2=36 (the picture is of a square inside a circle on a coordinate plane)
February 23, 2013

physics
a curling rock with a mass 22 kg is traveling 0 degrees at 3m/s and collides with a stationary object with the same mass the collision is a glancing one and the struck roce is moving 1m/s at 65 degrees what is the velocity after the collision
February 19, 2013

science
Can you help me with an acrostic for science pertaing to plants
February 19, 2013

Finite Math
The amount desired in a sinking fund is given. Find the periodic payments required to obtain the desired amount. A = $75,000, the interest rate is 7.2%, and payments are made quarterly for 4 years.
February 18, 2013

Finite Math
The amount (future value) of an ordinary annuity is given. Find the periodic payments. A = $14,500, and the annuity earns 6% compounded monthly for 10 years.
February 18, 2013

Finite Math
yeah you are right i just plug it in wrong , thanks soooo much!
February 18, 2013

Finite Math
didn't get it right, the answer in the book is 567.26
February 18, 2013

Finite Math
The amount (future value) of an ordinary annuity is given. Find the periodic payments. A = $2500, and the annuity earns 6.5% compounded annually for 4 years.
February 18, 2013

Finite Math
4403.80 is correct
February 18, 2013

Finite Math
Determine the amount of the ordinary annuities at the end of the given periods. $200 deposited monthly at 1% per month for 20 months.
February 18, 2013

Finite Math
yes thanks so much :D
February 18, 2013

Finite Math
Determine which is the better investment. 6.8% compounded semiannually or 6.6% compounded quarterly?
February 18, 2013

Physics
The back of the book says 227 km/h at 162.4 degrees
February 18, 2013

Physics
And your answer doesn't match the back of the book either.
February 18, 2013

Physics
lol can you solve this for me? We have done this multiple times (we think) and we are getting a different answer than that's in the back of the book
February 18, 2013

Physics
A plane is flying 25 degrees north of west at 190 km/h and encounters a wind from 15 degrees north of east at 45 km/h. What is the planes new velocity with respect to the ground in standard position?
February 18, 2013

english
We have to rewrite this correcting fragments and run on sentences can someone check my work below the original. Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in ...
February 18, 2013

Finite Math
Find (a) the final amounts and (b) the total interest earned on the original investment. 1. $4500 is invested at 7.5% compounded annually for 6 years.
February 17, 2013

Finite Math
How long will it take $800 to earn $18 at 6% simple interest?
February 17, 2013

Finite Math
Kathy borrowed $800 at 6% interest. The amount of interest paid was $144. What was the length of the loan?
February 17, 2013

Chemistry
How many grams of HCl need to be dissolved in 0.5L of water to prepare a solution of pH 1.5? Does anybody know how to work this out? Thanks :)
February 13, 2013

Chemistry
How many grams of HCl need to be dissolved in 0.5L of water to prepare a solution of pH 1.5? Does anybody know how to work this out? Thanks :)
February 13, 2013

english
Can someone please help, I'm supose to write explaining what advice one would give George and Lydia Hadley on how to be become better parents. I don't understand this passage so I don't know what to write. "I don’t know anything," he said, "...
February 13, 2013

math
What scale would you use for a room that is 12 feet by 15 feet on a 7 inch by 8 inch paper?
February 13, 2013

math
theres none
February 11, 2013

math
9/5xC)+32
February 11, 2013

math
theres none
February 11, 2013

math
what is 9/5x20)+32
February 11, 2013

math
what is expression 5 factorial equal
February 11, 2013

math
what is 85 nearest tenth
February 11, 2013

math
I need help with 40% equal x/30 what is x.
February 11, 2013

math
what is 3z-5+2z=25-5z
February 11, 2013

english
Scientists report (1) THAT CREATURES LIVING IN THE DEEP SEA ARE IN DANGER OF STARVING TO DEATH. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
February 6, 2013

english
Scientist report that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live in the deep sea. Creatures in the seabed are suffering from growing food shortages, which may be a result of rising sea temperatures. Scientist ...
February 6, 2013

english
SO all I need to do is moreless add sentences together to make complete sentences?
February 6, 2013

english
Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
February 6, 2013

grammar
Scientists report (1) that creatures living in the deep sea are in danger of starving to death. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea temperatures. ...
February 6, 2013

Finance
Orbital Communications has operating plants in over 100 countries. It also keeps funds for transaction purposes in many foreign countries. Assume that in 2010 it held 100,000 kroner in Norway worth $35,000. The funds drew 12 percent interest, and the krone increased 6 percent ...
February 4, 2013

math
a hiker travels for 15km on a bearing of 210T how far south is he please show working
February 1, 2013

Chemistry
Need for two balanced chemical equations? I am in need of these two equations which I however do not know how they react. If anyone could help, it is greatly appreciated :) "Formation of products by heating a solid mixture of calcium propanoate and soda lime" "...
January 29, 2013

Physics, help!
How many protons are needed to produce a total charge of 2.5*10^-15 C?
January 27, 2013

Chemistry
Air in the vicinity of a local power station contains 8.8x10^-4 gm^-3 SO2. What volume of 0.001moldm^-3 Iodine solution would be required to react with a solution obtained from 200dm^3 of contaminated air? The equation given is SO2 + I2 + 2H2O ==> H2SO4 + 2HI Thanks! :)
January 26, 2013

Math
What acceleration will cause a bus to travel a distance of 200 meters in 10 sec if it starts from rest
January 21, 2013

Acceleration
A toy car moves down an incline with an acceleration of 20 cm/s/s. what will its velocity be in 5 sec? what distance will it have traveled..?
January 21, 2013

Physics
A car starts from school gaining a speed at the rate of 2 km/min/sec. how long will it take to nave a speed of 50 km/min?
January 21, 2013

Physics
A jeep has a speed of 50 m/s at a given instant and 10 m/s later. fin its retardation, assuming it to be constant.
January 21, 2013

Physics, help me please?!
A car travels around a circular turn of radius 50 meters while maintaining a constant speed of 15m/s find the minimum value for the coefficient of friction necessary to keep the car on the road in icy conditions, the coefficient of friction drops to 0.15, Now find the maximum ...
January 18, 2013

physics
A small sphere of mass m=.0064kg and charge q1= +28.9 nC is attached to the end of a string and hangs vertically. A second charge of equal mass and charge q2= -58nC is located below the first charge by a distance d= 2.00cm. a. Find the Tension in the string b. If the string ...
January 14, 2013

history
please help me with this!!!!!! 13. Which statement below would an Islamist be most likely to agree with? (Points : 3) All aspects of society—political, legal, economic, social, and cultural—should be guided by strict Muslim teaching. If people of the Muslim world ...
January 11, 2013

Science
Students wer given materials to complete a circuit to turn on one light. The materials received were 2 wires, a AA battery, and various sizes of light bulbs. What is the variable in the experiment?
January 10, 2013

Algebra
IF Tony earned $600 after investing $3,000 for five years, what was his interest rate?
January 10, 2013

trig
Solve sin θ = -0.204 for 90º < θ < 270º. Give your answer to the nearest tenth of a degree. Honestly have no idea how to do this.
January 8, 2013

Chemistry
An aqueous solution of HCl has a high electrical conductivity when compared to the compound in hexane, whilst the conductivity of a solution of the compound in diethyl ether has an intermediate value. Explain.
January 8, 2013

Chemistry
An aqueous solution of (NH4)2SO4 has a pH lower than 7. Explain this observation. Thanks! :)
January 3, 2013

US History
I have a few questions about World War I that I can't seem to find information about in any textbooks or online: Was Russia forced to act in defense of Serbia to protect access to the warm water of the Black Sea? Did France extend support to Russia in an effort to recover ...
January 2, 2013

Advanced Statistics
What is Conceptual Framework...?
January 1, 2013

Chemistry
To 40cm^3 of 1mol AgNO3 is added 20cm^3 of 0.500 AlCl3. What is the molar concentration of the resulting AgNO3 solution. The reaction, if needed, is 3AgNO3 + AlCl3 ==> 3AgCl + Al(NO3)3 I worked out the number of moles present in AgNO3 which is 0.04 mol, and the number of ...
December 30, 2012

Chemistry
Woops I was mistaken! 0.02/0.25L ... the answer comes 0.08moldm^-3! thanks a million
December 30, 2012

Chemistry
A volume of 10cm^3 of 2M H2SO4 is placed in a volumetric flas of 250cm^3 and filled to the mark with distilled water. What is the molar conc. of the H2So4 in the flask? After I found how many moles there are in 10cm^3, which is 0.02 mol, what is my next step, as because the ...
December 30, 2012

Chemistry
A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
December 26, 2012

Chemistry
A mixture containing 0.5 mol of H2 (g) and 0.5 mol of I2 (g) was introduced into a 10L container at a temperature of 448 C. At this temperature the equilibrium constant Kp is 50. i. What is the total pressure in the container before the reaction starts and at equilibrium. ii. ...
December 26, 2012

algebra 2
In short: 2x^2-5x-3 becomes 2x^2-6x+x-3. Split and factorise for: 2x(x-3) 1(x-3) Which becomes: (2x+1)(x-3) x=-1/2 or x=3
December 19, 2012

algebra 2
Are you wanting it factorised? If so: multiply the constant, in this case '-3' by the co-efficient of x^2, so: (2x-3=6) Take the 2 off the co-efficient and replace the constant, -3, with -6, so you have: x^2 -5x -6 Find products of -6 that also add to make -5. The ...
December 19, 2012

Physics
what grade is this for?
December 17, 2012

algebra
The owner of a health food store combined cranberry juice that cost $7.79 per quart with apple juice that cost $7.19 per quart. how many quarts of each were used to make 10 quarts of cranberry juice mixture costing $7.61 per quart
December 10, 2012

algebra
Melissa drives her car 200 kilometers in 2.5 hours. How far can she drive in 6 hours at the same rate?
December 6, 2012

math
You have found a summer job manning a lighthouse off the northern coast of Vancouver Island. It is a lonely job and you feel the need for some mental stimulation. In your position, 40 m above sea level, you observe two sailboats in line with the lighthouse. The angles of ...
December 4, 2012

Stats
The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to estimate the average diameter of these pipes. A random sample of 18 pipes produces an average diameter of 2.56 mm with a standard deviation of 0.05 mm. You may assume that ...
November 28, 2012

Stats
Many colleges and universities hold a “blood drive” for organizations such as the Red Cross. To help with the planning of an upcoming blood drive, we want to estimate the proportion, p, of students and faculty who would be willing to donate a pint of blood. The Red ...
November 28, 2012

chemistry
how do i convert Pa to atm?
November 27, 2012

chemistry
calculate number of dichlorine molecules in a 5.00ml container at 40 degrees Celsius and a pressure of 2.14 x 10^4 Pa.
November 27, 2012

math
Determine all local and global extrema of the function f(x)=x(x−1)
November 26, 2012

TRIF HELP
No, but thank for the help
November 20, 2012

TRIG HELP
find the exact solutions over the interval tanx = 1 all real x
November 20, 2012

Chemistry
@DrBob222- Temperature does not need to be in Kelvin because it is a ratio, converting to Celsius would give her the same answer.
November 19, 2012

Chemistry
5.0 dm^3= 5 Liters (P1V1/T1)=(P2V2/T2) P1= .92 atm V1= 5.0 L T1=? P2= (800 mmHg/760 mmHg)= 1.05 atm (There are 760 mmHg in 1 atmosphere) V2= 5.7 L T2= 30 degrees Celsius ((.92 atm)*(5.0 L))/(T1)=((1.05 atm)*(5.7 L))/(30 Degrees) 4.6/T1= .1995 4.16/.1995= T1 T1= 20.8 Degrees ...
November 19, 2012

math
Suppose e^y=sin(x+cosy) Find dy/dx using implicit differentiation
November 19, 2012

Chemistry
A gaseous mixture consists of 6.95 g of N2, 4.75 g of O2, and 2.75 g of He. What volume does this mixture occupy at 23°C and 1.35 atm pressure?
November 18, 2012

Chemistry
28.014 g
November 17, 2012

Chemistry
A 35.0-g iron rod, initially at 25.6°C, is submerged into an unknown mass of water at 67.7°C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 63.5°C. What is the mass of the water?
November 17, 2012

Science
How do I balance a combustion equation? (PLEASE TELL ME ANY SHORTCUTS)
November 16, 2012

economics
The price of a wideget increases by 90%. What effect would we expect this to have on the equilibrium wage rate of workers who make widgets? Would this increase, decrease, or keep the wage rate the same?
November 16, 2012

english
im reading a book called " The berlin boxing club" and i need to answer some questions for hw. theres one question that i need help with which is what is the background of the author? What prompted him/her to write this book? the authors name is robert sharenow. ...
November 15, 2012

Statistics
disjoint
November 15, 2012

physics
A red ball is thrown up off the edge of a building 10 m tall with an initial speed of 4 m/s. A) how long does it take for the red ball to strike the ground below? B) If a black ball is dropped off the edge of the same building, how many seconds after the release of the red ...
November 14, 2012

physics
Runner A is running at a constant rate of 2.3 m/s when he passes RUmmer B who is stationary. Runner A continues running at a constant pace, and Runner B begins to run 4 seconds after Runner A just passes him. If Runner B is accelerating at a rate of .5 m/s^2, how long will it ...
November 14, 2012

physics
a nasty little boy tries to drop a water balloon from the top of a 20 m tall building so it lands next to and splashes an innocent woman standing on the ground below. how long does the woman have to get out of the way?
November 14, 2012

physics
a man drives with an average speed of 25 mph for 20 minutes. he rests at his destination for 1 hour and then returns home with an average speed for this leg of the trip of 15 mph A) what is his average speed for the round trip B) What is his average velocity for the round trip
November 14, 2012

physics
Water is flowing through a horizontal pipe at a rate 0.2 m3/s. The pipe narrows from a radius of 10 cm to 4 cm. What is the change in pressure?
November 13, 2012

physics
The pressure in a fire hose is 20 atm. How high can a firefighter spray water from this hose? One atm is about 1×105 Pa. The density of water is 1.0 g/ml, or 103 kg/m3. The acceleration of gravity, g, is 9.8 m/s2.
November 13, 2012

physics charges. please help!
A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...
November 12, 2012

world history
identify zhongguo
November 8, 2012

Physics electric force, please help!
A charge of +Q and a charge of +2Q are separated by a distance r. The electric force of +2Q on +Q has a magnitude of F and is directed to the right. Which one of the following statements is correct regarding the electric force of +Q on +2Q? (A)The electric force of +Q on +2Q ...
November 8, 2012

algebra
6b+14=-7-b can u help me find out what b stands for in this problem.
November 7, 2012

Trigonometric
Given that sinx = 7 /25 pi/2 <or equal to x <or equal to pi Find the value of cos 2x
November 6, 2012

Calculus
A car traveling 132 feet per second decelerates at a constant rate to 60 feet per second in three seconds. A. what is the negative acceleration? B. How long after the brakes are first applied will it take to come to a complete stop? C. How far does it travel before coming to a...
November 5, 2012

physics
a vending machine ate another students dollar. the student had enough. he dropped the vending machine off a 20 m cliff. at the same time his buddy at the bottom of the cliff throws a grenade straight up towards the vending machine. the grenade strikes the vending machine after...
November 4, 2012

phyicis
a vending machine ate another students dollar. the student had enough. he dropped the vending machine off a 20 m cliff. at the same time his buddy at the bottom of the cliff throws a grenade straight up towards the vending machine. the grenade strikes the vending machine after...
November 4, 2012

chemistry
It would be higher than the true value
November 2, 2012

Chemistry
Oh ok I thought I had to divide by the molecular weight of CaCO3 to find the moles of CO3. So I take the 0.54g CO3 and divide that by 60.01g which gives me 0.009 mol CO3 in 0.009 mol CaCO3?
November 2, 2012

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