Questions Asked on
July 26, 2011

college physic SHM
A 1.25kg mass stretches a vertical spring 0.215m.If the spring is stretches an additional 0.130m and released, (a)how long does it take to reach the equilibrium position again? (b)Write an equation giving its position y as a function of time t. (c)What
asked by noah 
physics
a car pulling a 1500kg trailer produces an acceleration of 0.50m/s^2. a)the frictional force in the wheels of the trailer is 125N. what force is the car exerting on the trailer? b) what force is the trailer exerting on the car?
asked by belle 
MicroEcon
The market for apple pies in the city is competitive and has the following demand schedule: Price Quantity Demanded $1 1,200 2 1,100 3 1,000 4 900 5 800 6 700 etc... 13 0 Each producer in the market has fixed costs of $9 and the following marginal cost:
asked by Anna 
chemistry
The space shuttle environment control system handles excess CO2 (it is 4.0% by mass of exhaled air) by reacting it with lithium hydroxide, LiOH, pellets to form lithium carbonate,Li2CO3, and water. If there are 7 astronauts on board and each exhales 20. L
asked by Samantha 
physics
A 400.0mwide river flows from west to east at 30.0 m/min. Your boat moves at 100.0 m/min relative to the water no matter which direction you point it. To cross this river, you start from a dock at point A on the south bank. There is a boat landing
asked by Kyle 
geometry
When the sun’s rays are at an angle of 39°, the distance from the top of Dakota’s head to the tip of her shadow is 77 inches. About how tall is Dakota? Round your answer to the nearest inch if necessary.
asked by aleyah 
Calculus :)
A rectangle is inscribed with its base on the xaxis and its upper corners on the parabola y=6–x^2. What are the dimensions of such a rectangle with the greatest possible area? Find Width=____ & Height=4 just need to find width.. is not 2
asked by Brit 
Chem 121
How many grams of NaOH are present in 9.0 mL of a 8.0% (m/v) NaOH solution
asked by Barbara 
Chem 121
A solution is made by dissolving 0.35 mole of LiI in enough water to give a final volume of 260.0 mL. What is the molarity of the solution?
asked by Barbara 
Physics
A 63 kg canoeist stands in the middle of her 22kg canoe. The canoe is 3m long, and the end that is closest to land is 2.5m from the shore. The canoeist now walks toward the shore until she comes to the end of the canoe. suppose the canoeist is 3.4 m from
asked by AfterLife 
Chemistry
Cl2+3F2 > 2ClF3 how many grams of ClF3 form when .204 moles if F2 react with excess Cl2?
asked by Crystal 
chemistry
How long would it take for 1.50 of water at 100.0 to be converted completely into steam if heat were added at a constant rate of 24.0 ?
asked by Anonymous 
Chemistry
How many liters of excess reactant would be left when 3.00 liters of nitrogen monoxide is mixed with 2.00 liters of oxygen and allowed to react at 695 torr and 27 degrees Celsius to produce nitrogen dioxide
asked by Andy 
Psychology
The thought processes that underlie learning: a) Are of great interest to behavioral theorists such as John B Watson and B F Skinner b) can be studied in animals when 'think aloud' instructions are given c) are the main interest of cognitive learning
asked by Nicci 
Physics
1. A concave mirror forms a real image at 25cm from he mirror surface along the principal axis. If the corresponding object is at a 10cm distance, what is the mirror's focal length? 2. A woman looking in a makeup mirror sees her face at twice its actual
asked by Anonymous 
geometry
A tree 19 feet tall casts a shadow which forms an angle of 49° with the ground. How long is the shadow to the nearest hundredth
asked by aleyah 
Science
1. A convex mirror with a focal length of 20cm forms an image 15cm behind the surface. If the object height is 1.2cm what is the image height? 2. An object is placed 10cm in front of a mirror and an image is formed that has a magnification of 2. Which of
asked by Lynette 
Geometry..
Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove: angles ABC and RPQ are congruent by completing the paragraph proof. AB=RP=13, BC=(?)=53, and CA=QR=26. So segment AB is congruent to (?), segments BC and PQ are congruent and segment CA is
asked by Wendell 
Science
What is the density of an object that has a mass of 550 grams and displaces 25 mL of water? Select all that apply 22mL/g .04 mL/g 22 g/mL 22 g/cm 3
asked by CoolCat333 
algebra
completely factor the following expression. 16a^240ab+25b^2
asked by Shay 
math
when graphing greater than, less than, etc. do you shade and if you do which way do I shade?
asked by jessica 
science
Hydrochloric acid is added to a beaker containing a piece if zinc. As a result,zinc chloride is formed and hydrogen gas is released. This is an example of ?
asked by Starr 
college physic
A 1.25kg mass stretches a vertical spring 0.215m.If the spring is stretches an additional 0.130m and released, (a)how long does it take to reach the equilibrium position again? (b)Write an equation giving its position y as a function of time t. (c)What
asked by noah 
math 163(discrete math)
how many different functions are there from a set with 10 elements to a set with the following numbers of elements: a)2 b)3 c)4 d)5
asked by lovz 
math
A library crew can shelve books in six hours. Another crew can do the job in four hours. If the first crew begins and is joined by the second crew one hour later, how many hours will it take to finish the job?
asked by jessica 
MATH
A disc jockey has 12 songs to play. Seven are slow songs, and five are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 12 songs if The songs can be played in any order. The first song must be a slow song and
asked by Jen 
Calculus
At 2:00PM boat X is heading due west at 15mph towards a dock that is exactly 15 miles away. At the same time boat Y leaves the dock traveling due north at a speed of 20mph. At what time will the boats be closest together?
asked by Allison 
Algebra II
If x Ω y is defined as the smallest integer of which both x and y are factors, then 10 Ω 32 is how much greater than 6 Ω 20? A. 2 B. 70 C. 100 D. 160 E. 200
asked by Luke 
MathNew Questions
Social Security Numbers A social security number consists of nine digits. How many different social security numbers are possible if repetition of digits is permitted? Is it 9^10?? 10 numbers correct?
asked by Jen 
Math
An identification code is to consist of six letters followed by three digits. How many different codes are possible if repetition is permitted? Is it 6^3??
asked by Jen 
geometry
A power pole broke To the nearest tenth of a meter, what was the original height of the pole opp=7 meters adj=11 meters
asked by aleyah 
algebra
Completely factor the expression. 36x^3 96x^2y+64xy^2
asked by sheba 
calculus
My problem is that a stft above the sidewalk. a man 6ft tall walks away from the light at the rate of 3ft/sec. at what rate is his tip of shadow moving
asked by Abdul Muqsit 
English
I have to write a debate on the topic "Trying to be friends parents have now forgotten parenting" I am speaking for the motion. I have to speak for 3 mins
asked by Am 
Chemistry
If a buffer solution is 0.200M in a weak acid (Ka=1.6*10^5)and 0.480 M in its conjugate base what should the pH be?
asked by Josh 
college algebra
A musician is planning to market a CD. The fixed costs are $1260 and the variable costs are $5 per CD. The wholesale price of the CD will be $11. For the artist to make a profit, revenues must be greater than costs. How many CDs, x, must be sold for the
asked by Ash 
geometry
Find the length of the leg of this right triangle. Give an approximation to 3 decimal places. hyp=24 adj=22
asked by aleyah 
Geometery
I am ask to write a two column proof. Given that AD is the diameter of circle O, and DC is tangent to O at D. Prove that Triangle ABD ~ (congruent) to triangle ADC
asked by Gregory 
Physics
The radius of the Earth is 6.38 x(10^6)m. How far (path length) does a point on the equator move if the Earth rotates... a. 20 degrees b. 20 radians c. 20 revolutions
asked by Charlie 
MATH
write, in extended form, a polynomial(with real coefficients) of degree 3, with solutions 2,2i.
asked by Jill 
science
1. A convex mirror with a focal length of 20cm forms an image 15cm behind the surface. If the object height is 1.2cm what is the image height? 3. A solid glass sphere with a radius of 5cm and index of refraction of 1.52 has a small coin embedded 3cm from
asked by Anonymous 
algebra
determine whether the ordered pair is a solution of the inequality (8,5);4x+y
asked by Julie S. 
physics
A gun is mounted at the top of light house of height h. A similar gun is mounted in the boat in the sea. Both the guns can fire shots with speed upto under root 2gk, where k>h. What will be the area in which gun at the top can be gun in the boat, but gun
asked by Tillu 
Statistics Standard Error
A population of 200 voters contains 52 Republicans, 128 Democrats, and 20 independents and members of other parties. A simple random sample of 20 voters will be drawn from this population. The expected number of Republicans in the sample is ______ ? The
asked by Sarah 
algebra
Megan factored the expression 12x^2+13x14 as (3x+2)(4x7). But when Jacob applied the foil principle and multiplied out(3x+2)(4x7), he got 12x^213x14; thus, Megan's solution does not appear to check. Why is that? Please help Megan to understand this
asked by sheba 
English
This is my first paragraph of my essay. Help! Imagine being given a name that every kid would make fun of and everyone always questioning “Why would your parents do such a thing?” The man knew the pros and cons of having such a very unusual name,
asked by lizzie 
Psychology
Charlene flew to see her grandparents on a plane that was piloted by Janet Harris. When Charlene arrived they asked her how she enjoyed the flight. "It was a wonderful flight, and the pilot was very good. He was able to avoid turbulence." Charlene's
asked by Nicci 
english
what is a good thesis statment for a descriptive essay about a horror film?
asked by Akeelah 
Math
A piece of cardboard has a length of 60cm and a width of 40cm. In order to make the cardboard into an open box, a box with no lid), a piece of length x must be cut out of each corner. Write an equation to represent each dimension of the box.
asked by Kate 
please help
The Everton college store paid $1859 for an order of 49 calculators. The store paid $11 each for scietific calculators. The others, all graphing calculators, cost the store $55 eaach. How many of each type of calculator ws ordered? Please answer in detail
asked by Shelly 
calculus
Solve the equations i) log2(x + 2) + log2 x = 3. ii) 25^x + 5^x+1 + 6 = 0.
asked by MSM 
Math
Social Security Numbers A social security number consists of nine digits. How many different social security numbers are possible if repetition of digits is permitted? Is it 9^10??
asked by Jen 
Spanish
Hi, I am preparing for a spanish skit for my class. Can someone check if this translation is correct. You have a great smile and great hair to match it. > Tienes una gran sonrisa y el pelo muy a su altura. thanks
asked by Bethel 
inforrmation tech/marketing
hi i just made this paper about information technology on business and marketing, im not really good at it so please check my work and maybe revise alittle thanks so much :) need it later hehe :D thanks As industry and commerce have increased their use of
asked by star sorbet 
English
I have to write an essay on second hand lion about an important idea in the film and why it is a worthwhile idea in the film. I want to do the importance of the past because of the flash backs do you think this is the right idea and if so what should my 3
asked by Aryaman 
Geometry
M and N are the midpoints of PR(which has a line over PR) and QR(which has a line over QR)respectively. Using graph paper, repeat this process from the last problem using different coordinates for P, Q, and R. How do these lengths MN and PQ compare now?
asked by Hunter Spence 
math
whats interval notation?
asked by jessica 
MathNew Question
One card is selected from a deck of playing cards. Determine the probability of selecting: a card greater than 9 or a black card
asked by Jen 
Business Communication
The way business communication is conducted [Passive voice] in the workplace experiences regular changes with the advances in technology that makes communication faster and easier.
asked by Robert 
algebra
Find the amount of compound interest earned in an account that opens with $21,000, earns 4.2% interest compounded daily, and is held for 5 years. Assume 360 days in a year.
asked by MITAL 
intermediate algebra
factor out the greatest common factor from the expression 24xyz^2+20x^2yz4x^2z^2
asked by ROCKY 
statistics
A population of 200 voters contains 52 Republicans, 128 Democrats, and 20 independents and members of other parties. A simple random sample of 20 voters will be drawn from this population. The expected number of Republicans in the sample is? and The
asked by Charlie 
statistics
You want to estimate the grades of st2%atistics students who gets grades of C or better. How many students should you survey to be 95% confident that the sample percentage is off by no more than 2 percentage points.
asked by ali 
biology
i need an article that can explain the scientific method to create hypothesis or designing an expermient
asked by denise 
Math
( 7(9)4  (35 divide 7)4
asked by Cheryl 
Math
Which pair has equally likely outcomes? List the letters of the two choices below which have equal probabilities of success, separated by a comma. A standard deck of cards has 12 face cards and four Aces (Aces are not face cards). A. drawing a red seven
asked by Jen 
Bio
What path does food take through the digestive and excretory
asked by LuLu 
geometry
P(2,1), Q(11,1), and R(8,7) M and N are the midpoints of PR and QR respectively. Find MN and PQ. How do these lengths compare with each other?.
asked by Hunter Spence 
Alg 2
a rectangular picture frame measures 8 inches by 4 inches. You want to triple the frame's area by adding the same distance, x, to the length and width. Find the value of x and find the new dimensions of the frame. How do you do this?? Please show work
asked by Anna 
physics
what is the distance and displacement of the race car drivers in the 15m?
asked by tuba 
science
Is filtered water unhealthy for my fish because the electrolytes have been removed in the process?
asked by phillip 
math
is this correct? Completely factor the following expression: 64y^249z^2 Is the answer: 128 y49
asked by Ashley 
Math
One card is selected from a deck of playing cards. Determine the probability of selecting: a card greater than 9 or a black card.
asked by Jen 
algebra
The length of a rectangle is 2 meters more than its width. If the area is 35 square meters, what are the length and width?
asked by Shay 
bio
i need to compare structure and !@#$%^&tion of diffrent cells types? can i get a helpful link for this?
asked by Anonymous 
physics
how much energy is needed to heat 180g of ice from 72 degrees celsius to 220 degrees celsius
asked by mwerevu 
math
The halflife of 234U, uranium234, is 2.52 multiplied by 105 yr. If 97.4% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed?
asked by Anonymous 
Maths
Mean of n numbers X1, X2,Xn is m. If Xn is replaced by x the new mean is
asked by Sharon 
algebra
The distance across a lake is 34 meters. What is the distance, h, between the boat ramp and the dock? Round your answer to the nearest meter and show your work.
asked by aleyah 
English
Could you please check these sentences on illnesses, please? Thank you in advance. 1)I’ve got backache as a consequence of my slipped (herniated?) disc. I need to express this when I’m at the chemist’s or at the doctor’s. I need also to express
asked by Henry2 
Math
Trigonometry Identities problem: Prove the following; (tan^2x)(cos^2x) = (sec^2x  1)(1sin^4x) ÷ (1+sin^2x)
asked by hhfo 
English
Broad SubjectPhonebook Character Limited Topic for Thesis Statement Oliver Tolivr Main Idea Wealthy Buisness Man Three Step Format #2 AppearanceSloppily dressed #3 SurroundingsState of the art mansion #4 ActionsPenny pinching ways Thesis Statement:
asked by lizzie 
chemistry
if aluminum chloride and copper sulfate make 48g of aluminum sulfate how many grams of copper sulfate was used ?
asked by serg 
American History
the colonials used both peaceful and violent methods to oppose the British policies imposed on America from 17631775. what is one violent way and one peaceful way
asked by Stacy 
MAT 117  ALGEBRA 2
The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this
asked by Anonymous 
geometry
the circle below has a radius of 10 cm. what is the area of the shaped region ? if necessary, round your answerto two decimal places. do not include units in your answer
asked by Ladyy 
Math
Simplify: (3x+5)^33x(x^21)
asked by Kate 
physics
An object moving with constant acceleration at time t=0 its speed is v. , at t=t. its speed is v./2 , at t=2t. its speed is v./4 . What will be its speed at time t=3t.?
asked by Tillu 
algebra
Factor x3+8 x2+4x +32=
asked by Dee 
algebra
______ /b24ac; b=3, a=1, c=2 What would the solution be?
asked by Lynda 
algebra
A 20ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 4 ft longer than the height that reaches on the side of the bridge. Find the Horizontal and vertical
asked by sheba 
math
If you purchase an item for $1,263 at an interest rate of 9.8%, and you finance it for 1 year, how much is the amount of addon interest? (Round your answer to the nearest dollar.)
asked by said 
Expert Medical Coding
Can anyone help me with some coding assignments
asked by Adria 
Math
find a quadratic equation having 3+root3 and 3root3
asked by jessica 
math
solve the problem. the halflife of 234U, uranium234, is 2.52 multiplied by 105 yr. If 98.3% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed?
asked by juliet 
Math
What is the answer to the below math problem? 78000 x (1.7% x 20 years) + (1% x 10 years)
asked by Mike 
Spanish
Help please, are all my answers correct? Distingue entre todos los usos con se en las oraciones a continuación. 1) Allí es donde _______ coches/carros/autos de Europa. Vamos mañana para buscar uno para comprar. A) fueron vendidos B) se venden C) se me
asked by Polly 
construction
How many square yards would it take to cover a ball that had a radius of 3'?
asked by Mark 
math
How many sheets of plywood would it take to sheath a roof that covered a building 74' wide,248' long and has a roof pitch of 4" in 12"?
asked by Mark 
Algebra
The percent decrease from 5 to 4 is how much less than the percent increase from 4 to 5? A. 0% B. 5% C. 15% D. 20% E. 25%
asked by John 
algebra
use the "difference of squares" rule to factor the following expression. 64z^481a^4
asked by Shay 
Math
Driving at 46 MPH, one can cover 17 miles in what seconds?
asked by Taylorsville 
math
find a quadratic function whose graph has a max of 25 and xintercepts of 3 and 2.
asked by jessica 
phiisical science
Suppose an unknown substance has a melting temperature of 1,200 degrees Celsius and a density of 16.7 g/cm3.
asked by amber 
algebra
solve by the substitution method: 8m+n=47 m5n=52 thank you having trouble completing please show all work so I can learn better
asked by Barbara 
Geometry
Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove: angles ABC and RPQ are congruent by completing the paragraph proof. AB=RP=13, BC=(?)=53, and CA=QR=26. So segment AB is congruent to (?), segments BC and PQ are congruent and segment CA is
asked by Wendell 
anatomy
Voluntary actions are controlled within the _________ of the frontal lobe
asked by erin 
intermediate algebra
compleletly factor the following expression 9y^216z^2
asked by ROCKY 
Maths Fractions
write two equilvalent fractions for 3/15.
asked by Bree 
construction
A swimming pool is 120' long,45' wide and 10' deep.How long would it take to fill with water if your maximum fill rate was 15 gallons per minute?
asked by Mark 
business
Which of the following is usually installed by the manufacturer?
asked by Anonymous 
math
factor out the greatest common factor 36m^2n^360mn^4+18m^4n^2
asked by Michael 
child care
an important step in reducing bias is to (a)help children choose the right friends (b)provide children with appropriate models (c)avoid children's questions about differences (d()reinforce media messages. i put b am i correct To encourage positive self
asked by Eustace 
math
solve by the substitution method 5x+7y=6 6x+y=21
asked by Jennifer 
Math
Given that P(A) = 0.5 and P(B) = 0.3, and P(A and B) = 0.21, determine P(BA).
asked by Jen 
math
solve by elimination method o.3x0.2y=4 0.4x+0.3y= 49/23
asked by Trena 
college algebra
(x^2/3)^7/2 simplify and express answer using positive exponents only
asked by Ash 
MATHSO LOST :(
A mini license plate for a toy car must consist of a number followed by two letters. Each letter must be a C, A or R. Each number must be a 3 or 7. Repetition of letters is permitted. Use the counting principle to determine the number of points in the
asked by Jen 
Maths
If mean of 1, 2, 3,  n is 6n/11, then n is
asked by Sharon 
intermediate algebra
factor out the greatest common factor from the expression 6x^3yz^43x^2y^3z^418^4y^2z^3
asked by ROCKY 
algebra
factor the following expression into a product of two binomials. 64x^264x+16
asked by Shay 
Math
can radical 2 minus 8 divided by 22 be further reduced?
asked by Anonymous 
grammar
Because subtle changes can reveal future abnormalities. Does the word because make this a fragment or is it correct as it is?
asked by els 
math
y= 7 /4x f(1)f(2)
asked by henry 
college algebra
find a general term for the sequence a1,a2,a3,a4..... 15,23,31,39
asked by Ash 
english
write a 100passage to scott mclean, the author of the course's textbook, in which you describe five details from her book that are good and five details about the book that are written well.
asked by leatrice 
history 135
write a persuasive,formal letter (50 to 850 words) to a fellow american of the era discussing why the U.S. became in the politics of Southeast Asia, how this involvement affected the U.S. political climate of the 1950s, and argue that the U.S. actions were
asked by kathy 
Math
Find the point that is 3/4 the way from A(2,6) to B(8,10)
asked by Paul Moore 
math
a bag contain balls, all but 4 r red, all bt 4 r green, all bt 4 r blue..then hw many balls r there
asked by 8k 
Math
Reiny can you show me how to check this problem. 5a^820a^725a^6 =5a^6(a^24a5) =5a^6(a^25a+a5) =5a^6(a(a5)+1(a5) =5a^6(a5)(a+1) (answer)
asked by Ms.Ellis 
Algebra
factor out the greatest common factor 36m^2n^360mn^4+18m^4n^2
asked by Ashley 
math
when in life would one ever have a question relating to powers in the real world ex 5x5x5x5x5x5 Anyone have an idea
asked by Cheryl 
cgd 218
What do the comics strips reflect about American culture?
asked by meshelle 
trinity
why are people faster than others
asked by vega 
CALCULUS :)
find y' of y=sinθ tanθ sqrt(θ^3)
asked by Brit 
intermediate algebra
completely factor the expression 150x^2420xy+294y^2
asked by ROCKY 
BIO
how is the scientific method used to create hypotheses or an expermient?
asked by Anonymous 
biology
how does concepts of chemistry affect biology?
asked by Anonymous