Questions Asked on
April 15, 2010

chemistry
what is the boiling point that contains 3.15 moles of ethylene C2H6O2 and 250.0g of H2O? answer should end in degree's celcius a) 1.03 C b) 93.55 C c) 106.45 C d) 6.45 C e) 103.44 C
asked by brandi r 
math
evaluate: cos (arc sin (4/5)  arc tan 2) with out using a calc.
asked by krista 
Phsyics
The center of a 1.10km diameter spherical pocket of oil is 1.10km beneath the Earth's surface. Estimate by what percentage directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is . Express
asked by Mikhail 
ochem
What's an equation of the hydrolysis of one ester group in tannins by CaCO3?
asked by kim 
Physics
It can be shown that for a uniform sphere the force of gravity at a point inside the sphere depends only on the mass closer to the center than that point. The net force of gravity due to points outside the radius of the point cancels. How far would you
asked by Mikhail 
Physics
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 and a radius of 8.50 . What is the speed of a satellite orbiting 4.70km above the surface? What is the escape speed from the asteroid?
asked by Mikhail 
MATH
Find the amount of compound interest earned in an account that opens with $21,000, earns 5.5% interest compounded daily, and is held for 20 years. Assume 360 days in a year. (Round your answer to the nearest cent.)
asked by Anonymous 
Trig
Sin theta = 4/5 i got 53.1 as an answer but on my answer sheet is also has 126.9 How do i get that 126.9?
asked by Dho 
,math
Find the number of subsets of the given set. {math, English, history, science, art} Is this correct: 1. {} 2. {math} 3. {English} 4. {history} 5. {science} 6. {art} 7. {m, E} 8. {m,h} 9. {m, s} 10. {m, a} 11. {e, h} 12. {e, s} 13. {e, a} 14. {h, s) 15. {h,
asked by bwb 
Osciallations
A partridge of mass 5.01kg is suspended from a pear tree by an ideal spring of negligible mass. When the partridge is pulled down 0.100 m below its equilibrium position and released, it vibrates with a period of 4.20s . What is its speed as it passes
asked by Mikhail 
Religion
Origen was the first Bishop of ______in what year. Studying for midterm and this is one of the questions I can't find an answer to
asked by Maria 
accounting
What is the impact on the financial statements of missing a step when completing the accounting cycle?
asked by lisa 
english
identify two arguments outine the premise and conclusions
asked by Anonymous 
nutrition
What are some of the health problems associated with undernutrition? Explain the cycle of malnutrition. Who does it impact?
asked by Anonymous 
statistics
An ecologist uses the line, based on 13 colonies, to predict how many birds will join another colony, to which 54% of the adults from the previous year return. What is the prediction? Give your answer to two decimal places, and use the regression line
asked by applebottom 
Osciallations
A harmonic oscillator has mass 0.530km and an ideal spring with force constant 146N/m . Find the period, frequency, and angular frequency.
asked by jack 
Maths
the histories and development of HinduArabic number system and the egyptain number system? plez.. i'm so confuse with these i need good explanation about this two system
asked by LAy 
Osciallations
You pull a simple pendulum of length 0.237m to the side through an angle of 3.50 degrees and release it. How much time does it take the pendulum bob to reach its highest speed? Take free fall acceleration to be = 9.80 . How much time does it take if the
asked by abby 
statistics
Information given:the distribution of male head circumference (HC) is normal with a mean of 56cm and a standard deviation of 1.8cm first question the prob that HC of a random chosen man is larger than 57.8cm is? Work: pr(x)>57.8cm z=(57.856)=1.8>.9641
asked by UPD 
statistics
Info given:With a random sample of 9 men. let X denote the number of men with head circumference larger than 57.8cm. the normal mean=56cm and standard dev=1.8cm. So this is a binomal dis they ask; For X, calculate pr(X=2)? second part, Let X denote the
asked by UPD 
Finance
If I had put 50,000 dollars away today in some kind of cd or money market account, and did not touch it or the interest for 20 yrs, how much money would I have, same ? with 80,000 please help
asked by samantha 
MATH
A set of numbers has “the triplesum property” (or TSP) if there exist three numbers in the set whose sum is also in the set. [Repetitions are allowed.] For example, the set U = {2, 3, 7} has TSP since 2 + 2 + 3 = 7, while V = {2, 3, 10} fails to have
asked by DAVID 
math
Suppose 100 dots are arranged in a square 10 × 10 array, and each dot is colored red or blue. (a) Prove that this array must contain a “monochromatic” rectangle. That is, no matter how the red and blue colors are assigned, there must be either a set
asked by Tyler 
Integers
Suppose a1, a2, . . . , an is a list of n numbers with the following properties: The sum of those n numbers is 500. The sum of the smallest three of those numbers is 48. The sum of the largest two of those numbers is 35. (Note: There might be some
asked by Rock 
Math
Suppose p and q are odd integers. (a) Show that the quadratic equation x2 + px + q = 0 has no rational roots. (A number á is a “root” of that equation if: á2 + pá + q = 0. A number is rational if it is expressible as m/n for some integers m and n. )
asked by Tiny 
Algebra
A ¡§lattice point¡¨ has integer coordinates. Then, A = (m, n) is a lattice point if both m and n are integers. Let¡¦s call a point P = (x, y) ¡§generic¡¦¡¦ if all the distances from P to lattice points are different. With some algebraic work, I
asked by Shrek 
Math
What numbers can be expressed as an alternatingsum of an increasing sequence of powers of 2 ? To form such a sum, choose a subset of the sequence 1, 2, 4, 8, 16, 32, 64, . . . (these are the powers of 2). List the numbers in that subset in increasing
asked by CSI 
Pre Calculus
Establish the following identity Sin2x/1+cos2x=tanx
asked by Tyler 
Pre Calculus
Establish the identity tanx/2=cscxcotx
asked by Peter 
Pre Calculus
Establish the identity (cosx/2sinx/2)^2=1sin x
asked by Peter 
Pre Calculus
Establish the following identity sin 2x/sinx  cos2x/cosx = secx
asked by Tyler 
Pre Calculus
Establish the following identity tan(x+pi/4)=1+tanx/1tanx
asked by Tyler 
home economics
uses of computer in home economics
asked by Anonymous 
Chemistry
Hydrogen peroxide, H2O2, solution can be purchased in drug stores and used as an antiseptic. A sample of such a solution weighing 1.00 grams was acidified with sulfuric acid and titrated with .02000 M solution of KMnO4. The unbalanced reaction is H2O2(aq)
asked by HELP!!! 
Chemistry
Using ƒ´Hfo and So values, calculate the standard molar free energy of formation for each of the following: a. CuSO4(s) b. ZnSO4(s
asked by Kristen 
hairdressing
descibe curved asin hairdressing
asked by Anonymous 
chemistry
2. Methanol, CH3OH, is used as fuel in race cars. This liquid fuel can be synthesized using the following process C(s)+ ½ O2(g) + 2H2(g) CH3OH(l) Calculate delta G using the deta Gf of the reaction. Calculate Kp. What is the relation between the
asked by Kristen 
hairdressing
descibe curved lines
asked by Anonymous 
health
Identify and describe three causes for the increasing costs of health care
asked by robin 
chemistry check my work
C7H6O3+CH3OH→C8H8O3+H2O In any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl salicylate, C8H8O3, is 1.31g. What is the percent yield? percent is 77.l1% is this correct?
asked by Molly 
Ag Bio
I'm stuck on a few questions. If you can just answer what you can 25. Describe the role of an operon in a prokaryotic cell, and give an example of how an operon works. 31. The word transcribe means "to write out," and the word translate means "to express
asked by Abby 
english
Which of the following sentences best represents culturally unbiased writing?
asked by bruno 
psychology
what is the effect of enrolling in the university on our social life ?
asked by Ehab 
chemistry
How many milliliters of NH3 (at STP) are needed to react with 45.0 mL of NO2 (at STP) according to the equation. Can someone please... help me? a) 45.0 mL b) 27.5 mL c) 33.8 mL d) 60.0 mL
asked by Diana 
physics
the position of the box 3 seconds after the oscillations have started
asked by Anonymous 
math
Which of the following conditions does not ensure that a quadrilateral is a parallelogram? Answer choice: a) the diagonals bisect each other b) both pair of opposite sides are parallel C)a pair of opposite angles are congruent d) all of the above
asked by nicole 
math
Which of the following conditions does not ensure that a quadrilateral is a parallelogram? Answer choice: a) the diagonals bisect each other b) both pair of opposite sides are parallel C)a pair of opposite angles are congruent d) all of the above
asked by nicole 
English
I write again,bcause yesterdeay nobody could really help we with this homework :( Hello everybody! Today a I have to write a complain letter to "my"boss.I should write about my difficulties,and about what's bothering me. In the letter I should propose a
asked by Lulu 
Algebra
Please help me I have been trying to get the answer and for some reason is not coming up correct can someone please help. evaluate the polynomial for x=1 3x^24x+6
asked by Ross 
ethinic culture
how has African slavery influenced our contemporary society
asked by toria 
accounting
I just have a small question about how to calculate the shares of common stocks, no par having the information below, thanks. The following stockholders' equity accounts arranged alphabetically are in the ledger of Tyner Corporation at December 31, 2010.
asked by mayasa 
geometry
building a ramp that will be in the shape of a perfect right angle triangle vertical height will be 10 feet and horizontal base will be 15 feet what is the lenght of downward sloping side or the ramp
asked by sharon 
College Chemistry
Consider the evaporation of methanol at 25.0 C: CH3OH(l)>CH3OH(g) Delta G= 4.3 kJ Find Delta G at 25.0 C under the following nonstandard conditions: Pressure of CH3OH= 108.0 mmHg.
asked by Kyle 
Health Care
What are three issues faced by the aging population that you believe to be a problem? Why do you see these as problems? Are there any agencies in your community that address these problems? If so, what are they? If not, why do you think they are not being
asked by Falguni Patel 
Chemistry
How many grams of sodium nitrate, NaNO3 are needed to make 250 ml of .500 M solution? MM of NaNO3 is 85 g/mol?? I'm not sure which equation to use, help please?
asked by Nick Bones 
Organic chemistry
I know that sulfuric acid acts as a catalyst and removes water to help shift the equilibrium to form more productin an esterification. Can someone tell me if it is consumed? My thought is no. If I am right, can someone tell me why it is not consumed. If
asked by TJ 
biology
The structure of chromosomes is best explained as DNA broken apart into separate genes. extended to form very long, thin molecules. wrapped tightly around associated proteins. coiled up into a ball.
asked by ballamoney1 
Health Care
I posted my question 40 minuts ago, how do I find out my answer? where would I will go to look for it?
asked by Falguni Patel 
biology
The synthesis (S) phase is characterized by DNA replication. cell division. replication of mitochondria and other organelles. the division of cytoplasm.
asked by ballamoney1 
writing
i need help finding a title for my paper. im writing it about my relationship to a place and i wrote it about my relationship to this small town in new york. i talked about a creek and horse races and how its my second home, but i cant think of a creative
asked by nat 
geometry
A tourist in France wants to visit 5 different cities. If the route is randomly selected, what is the probability that she will visit the cities in alphabetical order? Answer choice: a)120 b)1/5 c)1/120 d)1/25
asked by nicole 
HCA/220
how does blood clotting, immune response, allergic reaction and hormone resonse relate to each other
asked by Anonymous 
10th grade
geometry in Triangle xyz, ab is a midsegment of xyz. ax is = 26, bz=36 ay is congruent to ax and bx is congruent ot bz. I get that side yx = 52 and side yz is equal to 72 how do you get the value of side yz? is it 72?
asked by Anonymous 
math
How do you find the perimeter of a square with all sides equal 15 inches?
asked by Naomi 
physics
The average lifetime of muons at rest is 2.20 us. A laboratory measurement on muons traveling in a beam emerging from a particle accelerator yields an average muon lifetime of 19.668 us. What is the speed of the muons in the laboratory?
asked by Andy 
biology
Carbohydrates and lipids have many carbonhydrogen bonds; therefore, they both store energy in these bonds. are easily dissolved in water. dissolve only in vinegar. exist only in cells of plants.
asked by ballamoney1 
biology
Which of the following is true about the relationship between energy and chemical reactions? Activation energy is required for a chemical reaction to occur. Activitation energy is not necessary in a chemical reaction which releases energy. Chemical bonds
asked by ballamoney1 
biology
Internal membranes play important roles in protein production and processing except they do NOT anchor ribosomes in place. transport substances to different areas. contain the hereditary information for the protein. modify proteins to go into vesicles.
asked by ballamoney1 
geometry
11. Infinitely many different sectors can be cut from a circular piece of paper with a 12cm radius, and any such sector can be fashioned into a paper cone with a 12cm slant height. (a) Show that the volume of the cone produced by the 180degree sector is
asked by Sarah 
Geometry
A sphere consists of all the points that are 5 units from its center (2, 3,−6). Write an equation that describes this sphere. Does the sphere intersect the xyplane? Explain.
asked by Sarah 
Physics
Two 0.20 g metal spheres are hung from a common point by nonconducting threads that are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is 20 degrees. How much charge was
asked by Newberger 
Physics
A speed boat at rest begins to move in a straight line from a dock. The boat has a constant acceleration of +3.0 m/s squared. Attached to the dock is a siren that is producing a 755 Hz tone. If the air temperature is 20 degrees C, what is the frequency of
asked by Lenzen 
chemistry
You need to find the number of moles in 5mL of a substance given the density and the molecular weight. How do you do this?
asked by Max 
Physics
a) What is the tangential acceleration of a bug on the rim of a 6in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5 seconds? b) One second after the bug starts from rest, what is its tangential acceleration? What is its
asked by Elizabeth 
Math
A boat is sailing due east parallel to the shoreline at a speed of 10 miles per hour. At a given time the bearing to the lighthouse is S 70 degrees E, and 15 minutes later the bearing is S 63 degrees E. Find the distance from the boat to the shoreline if
asked by Abbey 
Chemistry
Hi, I posted a question yesterday : A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157 of the compound produced 0.213g CO2 and 0.0310 g H20. In another experiment, it is found that 0.103g of the compound produces 0.0230 g
asked by Anonymous 
Math
will someone just double check my answers, please. Identify which types of sampling is used:random,stratified, systematic,convenience. 1. a sample consists of every 20th student who leaves the bookstore. answer:systematic 2. a pollster uses a computer to
asked by Charlene 
English
Thank you very much for helping me! Here is the lyrics of the song I have to rephrase. You know parents are the same No matter time nor place They don't understand that us kids Are going to make some mistakes So to you other kids all across the land
asked by Franco 
Physics
If a 5.40g bullet is fired horizontally into a suspended(hanging)10kg block of wood and causes the block, with bullet embedded, to move off with horizontal velocity of 0.30m/s, What is the impact velocity of the bullet?
asked by Kirsten 
Chemistry
Maleic acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.271 mol of maleic acid has a mass of 31.4 g, what are the empirical and molecular formulas of maleic acid? My work: C: 41.39 g x (1 mol/12.01 g) = 3.44629 = 1 H:
asked by Anonymous 
algebra
Tree diagrams/ counting principles/ scp question: Two cards are drawn in succesion and with out replacement from a deck of 52 cards. find the following a. the number of ways in which we can obtain the ace of spades and the king of hearts, in that order. b.
asked by Jennifer 
Math
Hi! Can someone solve these for me pls? Y=10/x y=1/2x+4 solve for x and y thanks
asked by Me 
Math
I hate word problems! Can anyone just change this Following word prob to equations pls. I can do the rest! Sam invested $4500, part at 7%, the rest at 8 1/2%. After one year, the interest earned on 7% investment was $150 less than the interest earned on
asked by Me 
ETH125 cultural diversity
With gaming such a fresh, and practically always fresh, issue between the Native Americans and the federal government, does the federal government ( or have they in the past) taxed the Native American casinos that are not on reservations?
asked by Cindy 
math
I am not totally understanding this process. Factor Completely: x^5y^2  x^4y^2  2x^3y^2
asked by marco 
dps
how to find a (x1^3n+x2^3n) if x1 and x2 are the root of quadratic equation x^2+x+1
asked by vikash 
Project Management
How does the project audit differ from the performance measurement control system?
asked by Jerry 
engineering
in a proposed telesurgery application the image will be transmitted at 2*10^8m/s ovwe a roundtrip distance of 740km, the compression and decompression process for the images will take a total of 60m/s. what is the largest permissible value for the sources
asked by Kenji86 
Physics
How do you find the phase constant of the oscillation on a graph.
asked by Tyler 
engineering
a data with an availability of 93.4% is accessed via a network with an availability of 99.2%. on average for how much time in a week would a user be unable to retrive data from database.
asked by Kenji86 
11th grade
A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force she exerts is 41.0 N at an angle of 52.0° above the horizontal. (a) Find the work she does on the flight bag. (b) Find the work
asked by brittany 
History
We're learning about Roman Supremacy. What was the function of art and architecture in the Roman Empire? Thanks!
asked by Bee 
Brain Teaser
When Professor Sum was asked by Mr. Little how many students were in his classes, he answered, “All of them study either languages, physics, or not at all. Onehalf of them study languages only, onefourth of them study French, oneseventh of them study
asked by dan 
GCF Math Check
Can you see if my answers are correct? Directions find the GCF: (I did the factor tree for each) 40; 2^3 times 5 128; 2^7 GCF: 2 90; 3^2 times 2 times 5 105; 5 times 3 times 7 180; 3^2 times 2^2 times 5 GCF: 5 3x^3; what is that suppose to be 6x; 2 times 3
asked by Courtney 
Calculate the oscillation frequency f of the H2 mo
When displaced from equilibrium by a small amount, the two hydrogen atoms in an \rm H_{2} molecule are acted on by a restoring force F_{x}=k_1 x with k_1 = 510 N/m. Calculate the oscillation frequency f of the H2 molecule. Use m_eff = m/2 as the
asked by Tyler 
Geometry
The measure of the shorter parallel side of B is 6 inches and that of the longer side is 8 inches. The height of that figure is 10 inches. What is the area?
asked by Patricia 
Math
120 Are the last two digits divisible by 4 Are the last three digits divisble by 8 Are the sum of the digits divisible by 9 1048 Are the last three digits divisible by 8
asked by Scott 
algebra II
I have been working on this problem for a while and for some reason I don't come up with the answer. a^2+b^2=c^2 I came up with 2square root 5 please tell me if this is correct. In a right triangle, Find the length of the side not given b=1, c=square root
asked by betty 
physics
A thin cylinder of copper has a mass m=50g and is 1 meter long. what is the minimum current that has to flow through the cylinder for it to levitate in a magnetic field of 0.1T. would i use B=uI/2pi(d) im confused about what d is and how the mass relates
asked by lauren 
algebra II
I have been working on this problem for a while and for some reason I don't come up with the answer. a^2+b^2=c^2 I came up with 2square root 5 please tell me if this is correct. In a right triangle, Find the length of the side not given b=1, c=square root
asked by betty 
oscillation
An object with mass 0.250 kg is acted on by an elastic restoring force with force constant 10.8 N/m. The object is set into oscillation with an initial potential energy of 0.150 J and an initial kinetic energy of 6.00×10−2 J. What is the amplitude of
asked by Tyler 
PHYSICS WORK PROBLEM due tonight!! please help!
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.93 m from the end of the track after falling a vertical distance h2 = 1.18 m from the end of
asked by brittany 
another physics problem that i dont understnad..
An 58.0 N box of clothes is pulled 5.2 m up a 30.0° ramp by a force of 95 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.
asked by brittany 
language arts
words that ryme with kite
asked by kenneth 
Algebra
How do you solve this system to find x and y? what is x and y? 3x + 4y = 8 y = 3x + 17
asked by Larura 
Geology
If a rock contains an isotope with a half live of 600 million years, and 0.5 half lives have elapsed since the rock formed, how old is the rock in millions of years?
asked by Dana 
Discrete Math
True or False ∅ ⊆ {∅}.
asked by Ashley Everette 
Math(Please check)
I am trying to find the standard form of this equation for an ellipse. 9x^2 + 4y^2  36x + 8y + 31 = 0 First I grouped the x and y's together. 9x^2  36x + ? + 4y^2 + 8y + ? = 31 + ? + ? Then I factored the 9 and 4. 9(x^24x+4) + 4(x^2+2x+1) = 31+36+4
asked by Abbey 
Discrete Math
Calculate R(4) where the recursively defined sequence R is given by: R(1) = 2, R(2) = 3, and, R(n) = R(n − 1) + 2R(n − 2) + n, n > 2
asked by Ashley Everette 
math
find the percent increase in the population between 19502000. 965,000,000 in 1950 2251,000,000 in 2000 I tink it is 2251 / 965 = 2.33 = 233% Is ths right or did I do my math wrong
asked by Kyle 
Discrete Math
In the questions below determine the size (i.e. cardinality) of the set. • {xx ∈ N, x2 < 10} • P({a,b,c,d,e }) where P denotes the Power set • A × B where A = {1, 2, 3, 4, 5} and B = {1, 2, 3} • {xx ∈ Z, 9x2 −1 = 0} • A × B where A =
asked by Ashley Everette 
Math
A die is rolled once. What is the probability of getting number 5?
asked by Dylan 
physics...
Tarzan swings on a 26.2 m long vine initially inclined at an angle of 39° from the vertical. (a) What is his speed at the bottom of the swing if he starts from rest? (b) What is his speed at the bottom of the swing if he starts with an initial speed of
asked by brittany 
fiance
what is the pv of an annuity that promises to pay you $500 per year for the nest 20 years if the interest rate is 7%?
asked by Pat 
Math
Find an equation for the ellipse. center:(3,2) a=3c Foci:(1,2)(5,2) h=3 k=2 I do not know where to start.
asked by Abbey 
math
how do you solve (and show your work for): 52x=7
asked by martha 
chemistry
What is sulute
asked by Andisani chauke 
algebra
in graphing quadratic functions what are the ordered pairs for y=x*x+2
asked by Jenny 
finance
what is the pv of an annuity due that promises to pay you $500 per yeaR FOR THE NExt 20 years if the interest rate is 7%?
asked by Pat 
Math
find the vertex of (x+1)^22
asked by jay 
english
using these words : animate, dogged, gravity,indomitable,retaliate 1.This is what people do by dettling a score, getting even, and given other people a dose of their own medicine. which word describes this
asked by melissa 
SCI/275
Can someone please help me with week 1 discussion question 2?
asked by Lawnette Webber 
Math
Solve this equation log8 (x2  7x) = 1
asked by Anonymous 
geometry
the scale factor of 2 similar polygons is 2:3. The perimeter of the larger one is 150 centimeters, what is the parameter of the smaller one
asked by Jennifer 
Geometry
1. In the formula 2xy=7, what is the slope? 2. An isoceles trapezoid has____pair(s) of parallel sides. 3. Is a triangle with sides of 6,8, and 10, a right triangle? yes or no. 4.Find the area of the rectangle(30cm, 40cm,40cm. 5. Use factoring to simplify
asked by Patricia 
physics!!
A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force she exerts is 41.0 N at an angle of 52.0° above the horizontal. (b) Find the work done by the force of friction on the flight
asked by brittany 
Math
I am trying to find the standard form of this equation for an ellipse. 9x^2 + 4y^2  36x + 8y + 31 = 0 First I grouped the x and y's together. 9x^2  36x + ? + 4y^2 + 8y + ? = 31 + ? + ? Then I factored the 9 and 4. 9(x^24x+4) + 4(x^2+2x+1) = 31+36+4
asked by Abbey 
physics problem that i neeeed help with!
A person lifts a 3.8 kg cement block a vertical distance 0.9 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process. ? J (by person) ? J (by force of gravity)
asked by brittany 
physics
A 2.40 kg object is hanging from the end of a vertical spring. The spring constant is 53.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational
asked by mike 
world history
what single factorgeography, culture or economics best explains why japan and china were not colonized by europeans in the same way as was africa?
asked by ANNETTA 
math
Vernon Wells hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the horizontal distance the ball has travelled away from vernon, and h(x) is the height of ther ball at that
asked by Taha 
Math
A vase had 4 yellow flowers, 4 red flowers and 8 blue flowers. Donna takes one out, smells it and returns it to the vase. What is the probabilty she picked a red flower? What is the probabilty she picked a blue flower? Is it red 4:16 and blue 8:16?
asked by Dylan 
math
how many circleswith radius 2 cm will have the sametotal area as a circle with the radius 4 cm ? please help i am confused
asked by Katherine 
Math
How do you find the axis of symmetry for this problem: 2(x+2)^21
asked by Bree'Anna 
math
what is the area of the largest circle that will fit in a square with area 64 cm squared
asked by Katherine 
Chemistry
How do I decide whether something is polar or not?
asked by Megan 
Math
How to solve x^6 3x^3 2=0
asked by Samantha 
last physics problem!
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.93 m from the end of the track after falling a vertical distance h2 = 1.18 m from the end of
asked by brittany 
Math
log 6.44 + 3 log x  log x^2 = log 6.44 + 3 =?
asked by Anonymous 
science
How do plants vary in their efficiency at producing joules for human consumption?
asked by kelly 
math
Can you help me solve this solving quadratic equation.x^2x1=0
asked by lauren 
it/205
o What is the difference between IT and information systems? Describe some functions of information systems.
asked by robbie 
chemistry
For the following reaction: 2NH3 > N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.
asked by Sue 
math
what is the area of the largest circle that will fit in a square with area 64 cm squared please help me its confusing
asked by Katherine 
chemistry
For the following reaction: 2NH3 > N2 + 3H3 6.42 moles of NH3 were placed in a 7.4 L flask and allowed to come to equilibrium. 3.60 moles of NH3 remain at equilibrium. Calculate Kc for the reaction.
asked by Sue 
chemistry
For the equilibrium system: H2 + F2 2HF Kc = 230 If 5.80 mol of hydrogen gas and 5.80 mole are added to a 1.00 L flask what will be the concentration of HF at equilibrium?
asked by Sue 
chemistry
What would be the result if 5.0 L of hydrogen were burned with 2.0 L of oxygen in a closed containner?
asked by Myriam 
Organic chemistry
I know that sulfuric acid acts as a catalyst and removes water to help shift the equilibrium to form more productin an esterification. Can someone tell me if it is consumed? My thought is no. If I am right, can someone tell me why it is not consumed. If
asked by Dakota 
Math
Nikki is planning a program of recordings by Chicago jazz clarinetist Benny Goodman.The program will include:BG and the Big Tea in NYC, The Birth of Swing, after You've gone, and Avalon. If Avalon is to be first,how many different orders are possible?
asked by Kayla 
Math analysis
How do I simplify cscxcotxcosx?
asked by Lauren 
college
What is the concentration of a solution of HCL in which a 10.0 mL sample of acid required 50.0 mL of 0.150 M NaOH for neutralization?
asked by Anonymous 
language please check these
ARE THESE CORRECT(do they make sense to u): he is a columnist the remedy is working you will receive a bonous i don't know a reason i bought an anniversary gift the jewel is expensive may i borrow an almanac kate wants the checkersthe signature was
asked by martin 
math
When a soccer ball is kicked with a vertical speed of 25 m/s its height, h metres, after t seconds is given by the equation h=5t^2+25t a) how long after it is kicked is the soccer ball at a height of 30 m ? b) How long is the soccer ball in the air?
asked by Joe 
Math Analysis
How do I simpllify 1sin^2x/1cos^2x?
asked by Lauren 
Trigonometry
How do I find the value of sin(ab) if tana=4/3, cotb=5/12, 0
asked by Lauren 
language check please
SUFFIXES: dairy=dairies ability=abilities cry=cries journey=journies liberty=liberties dictionary=dictionaries worry=worries cherry=cherries lady=ladies supply=supplies lazy=lazyness penney=pennies
asked by martina 
Math
If x is an angle in the first quadrant and cscx = 3 find the exact value of cos 2x
asked by Nicole 
calculus
Three ships are at points P, Q, and R such that PQ=2km PR=7 km, and
asked by lALA 
math
Find the number of subsets of the given set. {math, English, history, science, art} Is this correct: 1. {} 2. {math} 3. {English} 4. {history} 5. {science} 6. {art} 7. {m, E} 8. {m,h} 9. {m, s} 10. {m, a} 11. {e, h} 12. {e, s} 13. {e, a} 14. {h, s) 15. {h,
asked by bwb 
calculus
Two roads intersect at an angle of 48º. A car and truck collide at the intersection, and then leave the scene of the accident. The car travels at 100 km h down one road, while the truck goes 80 km h down the other road. Fifteen minutes after the accident,
asked by lALA 
math
List all the subsets of S. You may use "C" for chocolate, "V" for vanilla, and "M" for mint. 1. {} 2. C 3. V 4. M 5. CV 6. CM 7. VC 8. VM 9. MC 10.MV 11. CVM Is this correct.
asked by bb 
math
4x^3y20x^2y+16y
asked by tia 
science help please
i don't understant what sexual reproduction is and what asexual reproduction is could please help me understand
asked by anna 
math
If Cosinex = 4/5 and x has its terminal side in quadrant lV, find the exact value of tangent 2x
asked by Jaslin 
chemistry
We have two liters of a buffer solution that is 0.10 M in CH3COOH and 0.10 M in NaCH3COO. How many moles of solid NaOH are to be added to this solution to increase its pH by 5.0 percent? Assume no volume change due to the addition of solid NaOH. I have the
asked by Bharg 
bus. calc
Use the rectangle (midpoint) rule, with n=3 to approximate the integral of 2xx^2 from 6 to 0.
asked by sam 
Chemistry
A certain Geiger counter is known to respond to only 1 of every 1000 radiation events from a sample. Calculate the activity of each radioactive source in curies, given the following data. My text barely attempts to explain how to do this problem, and there
asked by Trixie 
PHYSICS Gr.11
A bicycle of mass 14.6 kg and a rider of mass 50kg generate a net force of 12N.How fast are they going after 2.0 seconds?
asked by nini 
writing
what is the difference between arab and muslims
asked by cam 
language ms.sue could u please check these thanks
suffixes emptyempties monkeymonkeys securitysecurities holidayholidays pitypities friendlyi don't know this one strawberrystrawberries delaydelays birthdaybirthdays saysays vocabularyvocabularies conspiracyconspiracies memorymemories
asked by me 
PHYSICS Gr. 11
A of car of mass 2000 kg has a force forward due to the engine of 4500N and experiences an air resistance of 1500N. IF we ignore the friction with the road, what is the acceleration of this car? thanx :)
asked by Anonymous 
writing
since 911, what are some changes the united states has made to policy concerning arabs and muslims treatment
asked by cam 
writing
what are two characteristics of orientalism
asked by cam 
language
victoryvictories babybabies countrycountries multiplydon't understant enemyenemies marrymarried highwayhighways tinydon't understant thirstythirstiness? carrycarries familyfamilys justifyjustifies prayprayed varyvaries drydryness
asked by anna 
Social Studies/History
How did Southerners and Northerners differ in their understanding of "majority rule"? Thanks!
asked by Anonymous 
math
how much fencing is needed to close a circular garden whose radius is 4.5
asked by Aaliyah 
Math
You are playing a card game with a full deck of 52 cards. You win if you draw a red card that is a multiple of 5. What are your chances of winning on the first draw?
asked by Mikayla 
math
Solve 2cosxsin^x +2 =0 for all real values of x
asked by Alex 
physics
A bicycle of mass 14.6 kg and a rider of mass 50kg generate a net force of 12N.How fast are they going after 2.0 seconds?
asked by nelly 
Math
Can you see if my answers are correct? Directions find the GCF: (I did the factor tree for each) 40; 2^3 times 5 128; 2^7 GCF: 2 90; 3^2 times 2 times 5 105; 5 times 3 times 7 180; 3^2 times 2^2 times 5 GCF: 5 3x^3; what is that suppose to be 6x; 2 times 3
asked by Courtney 
Math
120 Are the last two digits divisible by 4 Are the last three digits divisble by 8 Are the sum of the digits divisible by 9 1048 Are the last three digits divisible by 8
asked by Scott 
Chemistry
When a sample of PCl5(g) (0.02087 mol/L) is placed in 83.00 L reaction vessel at 491.0 °C and allowed to come to equilibrium the mixture contains 103.0 grams of PCl3(g). What is the equilibrium concentration (mol/L) of Cl2(g)? PCl5(g) = PCl3(g)+Cl2(g)
asked by Drew 
Research Writing
I have to pick a topic and list argument and counterargument for a research paper (com 220 class). I would like to write about the death penalty, I just need help chosing a pro and con to write about. I believe I need more detail than just saying my topic
asked by Reshi 
Algebra
Without writing them all out, what is the number of subsets of set A = {tongue, ear, mouth, eye, nose, cheek, forehead, neck, shoulder}?
asked by Brad 
language
victoryvictories multiplymultiplies tinydon't know thirstythirstness? justifyjustified prayprays or prayed drydryness anniversaryanniversaries? bodybodies rainynot really sure comedycomedies crazycrazyness industryindustries decaydecayed?
asked by anna 
MATH
WHAT IS A COORDINATE PLANE?
asked by PLEASE HELP!!!!!! 
biology
why is the fovea important?
asked by Mary 
algebra
83% of 335 =
asked by jamie 
college philosophy
I'm utterly lost!! What are the phenomenal and noumenal realities according to Kant?
asked by Alex Casimir 
English
I'm doing a persuasive speech on why people should donate blood. What would a good title be?
asked by Lindsey 
Chemistry
When a sample of NO2(g) (849.9 grams) is placed in 390.0 L reaction vessel at 961.0 K and allowed to come to equilibrium the mixture contains 248.2 grams of NO(g). What is the concentration (mol/L) of NO2(g)? 2NO2(g) = 2NO(g)+O2(g) I keep getting .0212 or
asked by Amphee 
physics
A stone is dropped into a deep canyon and is heard to strike the bottom 15s after release. How deep is the canyon? The speed of sound waves in air is 343 m/s and the acceleration of gravity is 9.8m/s^2. Answer in units of m.
asked by Anonymous 
Physics
A boat is rowed due North at 7.0 km/h directly across a river that flows due East at 4.0 km/h. Find the boat's resultant speed.
asked by Tony 
math
a series of numbers starts with 2.each number in the series is two times as great as the number before it.what is the sixth number in the series.
asked by james 
math
the graphs of the equations y = x to da 2nd and x = 2 intersect in A.1 point B. 2point C. 3point D. 0point?
asked by crystal 
math
solve 2cos^2x = square root of three cosx (couldnt find the sign on keyboard sorry) for principal values of x. express the solutions in degrees
asked by Kathy 
6th grade
The measure of AB is 4 units, the measure of BC is 5 units and the measure of CD is 12 units. Find the measure of DE?
asked by Rachael 
EGYPT
I NEED TO KNOW ABOUT EGYPT THESE ARE THE QUESTIONS THAT I HAVE TO ANSWER: IS THERE RURAL AREAS IS THERE ANY CONFLICT(RELIGIOUS,SLAVERY ETC.) IS THERE ANY POLUTION THAT'S ALL THANK U
asked by KEVIN 
math
the graphs of the equation y = x to the 2nd and x = 2 intersect in A. 1point B. 2point C. 3point D.0point??
asked by crystal 
Statistics
True or False and explain: If the slope of a regression line is large, the correlation between the variables will also be large. I was thinking false but am now second guesing myself. Thanks.
asked by Anonymous 
nutrient
you determine that 1 ounce of the peanut butter container contains 115 calories and 9 grams of fat. What percent of the calories come from fat?
asked by Nika 
algebra
dan has 6 worms on each pole and gary has 11 worms on each pole there are total of 13 poles and 103 how many poles does each guy have
asked by lashell 
ContestHelpmore thoughts
Hey, I need help coming up with a few lines. Lines you never wantto hear during summer vacaation. ex. that piece of newspaper is the toilet paper I don't know if these are good: That was our plane money I thought you were in charge of the kids These are
asked by Sara 
physics
a cell membrane is 70 angstrom (A)unit thick if angstrom unit is o.1nm what is the membrane thickness in a. meter b. micrometers
asked by glyn jane 
university of phoenix
i was trying to find information about finding out if a graph if a function
asked by ladonna 
math 4th grade
Leah liked to balance objects she found around the house using the science kits she got for Christmas. She found that 3 identical apples and a 5gram weight exactly balanced with a 50gram weight.Leah said she could tell how much each apple weighed by
asked by Mikayla 
12th grade government
micromanagement of party goals a possible weakness of political parties?
asked by diane 
biology
where is sound perceived?
asked by Mary 
Stats
nformation given:the distribution of male head circumference (HC) is normal with a mean of 56cm and a standard deviation of 1.8cm first question the prob that HC of a random chosen man is larger than 57.8cm is? Work: pr(x)>57.8cm z=(57.856)=1.8>.9641
asked by UPD 
stats
Info given:With a random sample of 9 men. let X denote the number of men with head circumference larger than 57.8cm. the normal mean=56cm and standard dev=1.8cm. So this is a binomal dis they ask; For X, calculate pr(X=2)? second part, Let X denote the
asked by UPD 
Social Studies
Prince Henry had a school for sailors and for the advancement of navigation. Where did he send ships?
asked by Anya 
physics help
A car travels at 80 km/h on a level road in the positive direction of an x axis. Each tire has a diameter of 66 cm. Relative to a woman riding in the car and in unitvector notation, what are the velocity at the (a) center, (b) top, and (c) bottom of the
asked by beav 
Social Studies cont.
Explain a very negative outcome of these explorations.
asked by Anya 
riddle
How do you make a w made out of pens into a square by moving only 1 pen
asked by jeremy 
physics
A bicycle of mass 14.6 kg and a rider of mass 50kg generate a net force of 12N.How fast are they going after 2.0 seconds?
asked by Anonymous 
math(advanced algebra&trigonometry)
the playground at a daycare center has a triangularshaped sandbox. Tow of the sides measure 20 feet and 14.5 feet and form and included angle of 45 degree. Find the length and the third side of the sandbox to the nearest tenth of a foot.
asked by Rony 
math
How do you make a w made of 4 pens into a perfect square by only moving one pen
asked by jeremy 
math
how do i collect the like terms 10p+5q7p7q would the answer be 3p,2q
asked by ladonna 
math Did I do it right?
Calculate using expanded notation, showing steps. 72 + 806 Did I do it right? 72 + 806 (7*10) + (2*1) + (8*100) + (6*1) =(8 * 100) + (7*10) + (6*1)
asked by bart 
Algebra2
I can't get the right answer to this problem...what am I doing wrong? (2x4)(x+1)^2 (2x4)(x^2+2x+2) 2x^3+4x^2+4x4x^28x8 2x^34x8 but the answer I'm supposed to get is 2x^36x4 what am I doing wrong? Please help! thanks
asked by Tim 
algebra
How do you do it?:( im stuck! y=x+4 y=1/5x
asked by Rebecca 
math
18
asked by ladonna 
Algebra
Diane has one stamp of each positive integer value 1 cent through 9 cents, inclusive. She wants to put 10 cents worth of postage in a row across the top of an envelope. If arrangements of the same stamps in different order are considered different, how
asked by Z 
English
Why does Daisy cry over Gatsby's shirts in the "The Great Gatsby" when he is showing her his house. Is there any significance?
asked by Kathleen 
math
Two chips are selected from a box containing 6 blue chips, 4 red chips, and 3 green chips. The first chip selected is not replaced before the second is drawn. Find P(red, then green).
asked by brandon 
stats
A human resources manager at a large company wants to estimate the proportion of employees that would be interested in reimbursement for college courses. If she wishes to be 95% confident that her estimate is within 5% of the true proportion, how many
asked by Chad 
English
1. What was your parents' dream? Mother wanted to be a nurse, and Father wanted to be an architect. 2. What were our parents' dreams? Mother wanted to be a nurse, and Father wanted to be an architect. (Which question is corect? Do we have to use the
asked by rfvv 
social studies
okay, I have to draw the hierarchy pyramid for Japan. I've looked on google and I can't find it anywhere. Please help!!!!
asked by Ashley 
math
use fraction bars to find the quotient 2/9 divided by 1/6
asked by alex 
Math Help Please
How is dividing a polynomial by a binomial similar to or different from the long division you learned in elementary school? Can understanding how to do one kind of division help you with understanding the other kind? What are some examples from real life
asked by Michelle 
chemistry
How many milliliters of NH3 (at STP) are needed to react with 45.0 mL of NO2 (at STP) according to the equation. Can someone please... help me? 8NO2 (g) + 6NH3 (g) > 7N2) (g) + 9H2O (g) IS this help? a) 45.0 mL b) 27.5 mL c) 33.8 mL d) 60.0 mL
asked by Diana 
Economics
The “medical arms race” literature suggests that hospitals compete on the basis of: a. costs. b. costs and price. c. quality. d. (b) and (c) are correct. Is (c) correct?
asked by Ryan 
teenage society today
Hello everyone, I am an adult going back to school. I have to write a report about the changes in society today, especially in teenagers. So teenagers, my question for you is what is the type of "text messaging language" you are using? What do some of the
asked by Cindy 
Math
so confused on this. I have answered but want someone to check me. Identify the distribution as symmetric, leftskewed, or right skewed. 1. exam scores for an exam in which most students did well, but a few students failed. Answer: Left Skewed 2. Amount of
asked by charlene 
4 grade math
what are two addition problems with the answer of 30
asked by priscilla 
Math
Dividing the square root of 63 by what number will give a rational number solution?
asked by Andie Weaver 
math
translate to an algebraic expression the product of 27% of some number
asked by mya 
Critical Thinking
Controlling Irrational Fears After 9/11* We present this selection as an example of a fairly wellreasoned argumentative essay. There is more here than arguments—there’s some window dressing and you’ll probably find some slanters here and there as
asked by Amanda 
Quantum Physics
An electron and a proton each have a thermal kinetic energy of 3kBT/2. Calculate the de Broglie wavelength of each particle at a temperature of 2170 K. (kB is Boltzmann's constant, 1.38×1023 J/K. The mass of the electron is 9.11×1031 kg and the mass of
asked by Sam 
Math
Diane has one stamp of each positive integer value 1 cent through 9 cents, inclusive. She wants to put 10 cents worth of postage in a row across the top of an envelope. If arrangements of the same stamps in different order are considered different, how
asked by Z 
practice book
get rid of the double negatives you never wanted to be no miner your sure its too hard a life?
asked by priscilla 
math
the product of 27% in algebraic expression.sorry the ? says to type the % as a decimal and use q to represent some number. would i write that like q=0.27
asked by mya 
math grd 11midterm tomm
please explain how do u draw an asymtote ? and whats the diff btwn set and interval notation? and example plz thanks
asked by just wondering 
practice book
grt rid of the double negatives you sure its too hard a life?
asked by maya 
Health Administration
Describe three potential barriers to entry in the pharmaceutical industry.
asked by Hilary 
Religions Of the World
How do you think the importance of these relationships developed? What spiritual purpose do you think they serve for indigenous peoples?
asked by Ray 
geometry
HELP.... In a certain lottery, 3 numbers between 1 and 9 inclusive are drawn. These are the winning numbers. How many different selections are possible? Assume the order in which the numbers are drawn is not important. Answer choice: a.) 6 b) 84 c) 504 d)
asked by nicole 
math grd 11
how do u draw an asymtote ? diff btwn set and interval notation? and example plz
asked by forki 
Math
Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sqrt t y = 1  t
asked by Abbey 
Calculus  urgent
Find the dimensions of the largest cylinder that can be inscribed in a cone of fixed height H and fixed radius R
asked by Aliza 
geometry
How many 5 card poker hands consisting of 3 aces and 2 kings are possible with an ordinary 52card deck? Answer choice: a).12 b).288 c).6 d).24 I got 24 is that correct?
asked by nicole 
Calculus  urgent
An isosceles triangle is inscribed in a circle of fixed radius R and centre O. What is the minimum area of the region outside the triangle and inside the circle?
asked by Aliza 
grammar
10 verbs and adjectives that are frequently overused or very mundane . HELP!
asked by ashley 
MATH MID TERM TOMM PPL PLZ HELP
how do u draw an asymtote ? diff btwn set and interval notation? and example plz
asked by forki 
Cultural diversity
What are some of the changes the united States has made to policies concerning the immigration and treatment of Muslim and Arabix members of society?
asked by Anonymous 
Economics
What is medical arms race (MAR)?
asked by Ryan 
math
25% of what number is 20 i got 1/4 can you tell me if i am right
asked by mya 
algebra
2r9s=24 9r+2s=62 the quest asks to write a order pair or tell if there is infinitely solutions or no solutions. can you help
asked by curt 
COMMON PPL MATH MIDTERM
how do u draw an asymtote ? diff btwn set and interval notation? and example plz
asked by forki 
Physics 11th Grade
A foam ball of a mass of 0.150 g carries a charge of 2.00 nC. The ball is in a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?
asked by Adam 
English
1. What was their job? 2. They worked at a bakery. 3. He worked at a bakery, and she worked for a bank. 4. What were their jobs? 5. He worked at a bakery, and she worked for a bank. 6. They worked at a bakery. (Will you look at the questions and answers?
asked by rfvv 
geometry
5. The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR.
asked by sally 
English
1. I am all ears. (What is the part of speech of 'all'? Is 'all' an adjective or an adverb? What is the meaning of 'all' here?) 2. They are all happy. (What is the part of speech of 'all'? Is 'all' an adjective or an adverb? What is the meaning of 'all'
asked by rfvv 
Economics
Analysts believe that although the medical arms race may have led to quality competition in the 1980s _____ has led to more price competition since the 1990s. a. selective contracting through managed care b. prospective payment c. economies of scale d.
asked by Ryan 
geometry
The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR.
asked by sarah a 
Reading
Which word would fit best for the word endangered, suffering, disappearing,or menacing in the sentence "With fewer than 100 Vancouver Island marmots living in the wild, it is one of the world's most endangered animals." ?
asked by Eliza 
science, 7th,6th,8th,9th grade
In what three ways can machines make work easier?
asked by Nyla Rose 
algebra
6x>1/13 the question is asking me for a solutions set using the multiplication principle
asked by curt 
Math
Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sqrt t y = 1  t
asked by Abbey 
Reading
Which sentence sounds more like an opinion? 1.The workers move in militarylike columns and fan out from the nest. 2.The largest known Amazon colony has more than one million army ants.
asked by Ida 
math
Mark hid a $10 bill inside his favorite book. He forgot the pages where he hid it. If the sum of the pages where the bill is hidden is 177, on what pages will Mark find his money?
asked by Victoria 
Math
Write the slopeintercept form of an equation of the line that passes through the given point and is perpendicular to the graph of each equation. 1.(2,2),y=1/3x+9 2.(4,3),4x+y=7 3.(4,1),4x+7y=6 4.(6,5),4x+3y=6 These are the answer I came up with,
asked by Shadow 
math
How many 5 card poker hands consisting of 3 aces and 2 kings are possible with an ordinary 52card deck? Answer choice: a).12 b).288 c).6 d).24 I got 24 is that correct?
asked by nicole 
Precalcurgent
How do you find a formula for f(x) and g(x) if h(x)=f[g(x)] h(x)=(2x^35)^4
asked by Erica 
CHEM
given the general chemical equation, A yields 3C + D , a. how many moles of C can be produced from one mole of A? b. how many moles of D can be produced from four moles of A?
asked by Sienna 
math
Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and that V is a p × q matrix. In order for U•V to make sense, what must be true of the dimensions of these matrices? Although matrix multiplication
asked by yadlay 
statystics
A company manufactures wind turbines. A random sample of 25 turbines is taken and the sample mean life is 20.00 years with a standard deviation of 2.50 years. If you were constructing a 90% twosided confidence interval estimate, the upper limit would be
asked by Anonymous 
college math
can you help me factor 3xy@+9xy+6x=
asked by Anonymous 
college math
canyou help me factor x^3x=
asked by Anonymous 
science
suppose 35 grams of waterare cooled from 15 c to 10 c how much heat is given off?
asked by Roselyn 
statystics
: Human Resources took a survey and found that the average commute time one way is 25.4 minutes. However one of the executives feels that the commute is less. He randomly selects 25 commuters and finds that the average is 22.1 minutes with a standard
asked by Adela 
chem lab (webwork)
What is the pH of the solution created by combining 1.80 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH pH wHCl pH wHC2H3O2 1.80 Complete the table below: What are the pH values if you take
asked by anonymous 
math help
Let u = [2,−3, 1] and v = [0, 1, 4]. Calculate the vector u − v. Place u and v tailtotail to form two sides of a triangle. With regard to this triangle, what does u−v represent? Calculate the number u•u and discuss its relevance to the diagram you
asked by jillian 
physics
How far would you have to drill into the Earth, to reach a point where your weight is reduced by 8.0 ? Approximate the Earth as a uniform sphere.
asked by Adam 
physics
Can a person, in principle, travel from Earth to the galactic center (which is about 2.3e4 lightyears distant) in a normal lifetime? Explain, using either timedilation or length contraction arguments. If they want to make the trip in 24 y what distance
asked by Andy 
math
Centered 6 meters above the ground, a Ferris wheel of radius 5 meters rotates at 1 degree per second. Assuming that Jamie’s ride begins at the lowest point on the wheel, find how far Jamie is above the ground after 29 seconds; after 331 seconds; after t
asked by sarah b 
geometry
There are two noncongruent triangles that have a 9inch side, a 10inch side, and that enclose 36 square inches of area. Find the length of the third side in each of these triangles.
asked by sarah b 
Economics  stock purchase
Can someone please help me? I am so confused! My homework is called stock purchase and I need to find some information abut three stocks. I'm starting with microsoft. The first three questions are the stock name, symbol, and address of the headquarters.
asked by Samantha 
social studies
in what ways does religon affect american society?
asked by cynthia 
6th grade
what is a word for what happens when you are confused?
asked by annie 
math 140
how do i determine if the amount of credit card debt of familiesin the US is leftskewed, rightskewed, or symmetric? I have read and reread my book and still can not figure it out. thanks
asked by rasha 
Math
Triangle ABC has vertices A(0,4),B(1,2),and C(4,6). Determine whether triangle ABC is a right triangle.Explain. How do I do this?
asked by Shadow