Questions Asked on
April 8, 2012

Chemistry(Please check answer)
The solubility product expression for mercury(I) iodide, Hg2I2 is Ksp = ? My answer is [Hg2^2+^][2I^^]^2^ Would you agree?
asked by Hannah 
geometry
The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest whole number. The smaaler trapezoid is 24m, and the larger trapezoid is 57m. Possible answers: 576m^23,249m^23,181m^214m^2
asked by kevin 
geometry
a large triangle is 15ft and the small triangle is 9ft. the triangles sre similar what is the ratio (larger to smaller) of the perimeters? possible answers: 25/91/65/39/25 the triangles are similar what is the ratio ( larger to smaller) of the area
asked by kevin 
physics
An automobile traveling 95 overtakes a 1.10long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What
asked by kelly 
goemetry
The pentagons below are similar. The area of the smaller pentagon is 30m^2. What is the area of the larger pentagon in m^2? Small pentagon is 4m and the larger one is 10m
asked by kevin 
discrete math
Find how many positive integers with exactly four decimal digits, that is, positive integers between 1000 and 9999 inclusive, have the following properties: (a) are divisible by 5 and by 7. (b) have distinct digits. (c) are not divisible by either 5 or 7.
asked by carlton 
Physics
During each heartbeat, approximately 71 cm3 of blood is pushed from the heart at an average pressure of 105 mmHg. Calculate the power output of the heart, in watts, assuming 68 beats per minute.
asked by Constance 
College Physics 2056
An electromagnetic wave strikes a 3.00cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 104 T. How long does it take for the wave to deliver 1000 J of energy to the wall?
asked by Tony 
PLEASE HELP CHEM!
2 HgCl2 (aq) + SnCl2 (aq) > SnCl4 (aq) + Hg2Cl2 (s) Hg2Cl2 (aq) + SnCl2 (aq) > 2Hg (s) + SnCl4 (aq) For each reaction, write the two halfreactions that make it up and calculate the overall reaction potential by adding the two halfreactions. Each
asked by Betsy 
geometry
Find the area of the rhombus. Leave your answer in simpliest radical form. Looks like kite the left sied top corner is 60 degrees and the bottom right corner is 6. Possible answers are: 12sqrt336sqrt67272sqrt3 Could someone please help.
asked by kevin 
Math11
Jamal has invested 5000.00 in an account that earns 2.50% interest per annum for a term of 10 years. a) how much interest will he earn? B)How much will his investment be worth at the end of the term?
asked by Donald Trump 
College Physics
A 40 kg child is standing on the edge of a merrygoround in a playground. Before they were deemed too dangerous, these were quite common. They were just huge rotating platforms you could sit on while someone spun you around in uniform circular motion
asked by Taylor 
math
If a spring stretches 0.9 m when a 3kg weight is attached to it, how much will it stretch when a 4kg weight is attached to it?
asked by gwen 
Applied Calculus
A hardware store owner chooses to enclose an 800 square foot rectangular area in front of her store so that one of the sides of the store will be used as one of the four sides of the fence. If the two sides that come out from the store front cost $3 per
asked by Trisha 
Chemistry
Why does equilibrium shift to the left when AgNO3 is added to the equation Co(H20)6 (aq) + 4Cl (aq) CoCl4 (aq) + 6H2o(l)?
asked by Nancy 
Calculus
Explain why the plane with Cartesian equation 2x+5z3=0 never intersects the yaxis. Answer:Because there is no yvalue in the equation?
asked by Jenny 
algebra
The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=0.6x^2+12+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold
asked by Terry 
physics
You are trying to raise a bicycle wheel of mass m and radius R up over a curb of height h. To do this you apply a horizontal force F. What is the smallest magnitude of the force F that will succeed in raising the wheel onto the curb when the force is
asked by Emily 
Science
Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes. How could she figure out if their volume is the same? A)Weigh each one on a scale to see which is heaviest. B)Fill each one with
asked by Sara HELP ME PLEASE 
Physics
If you can see the face of a friend who is underwater, can she also see you? Please explain. Thanks :)
asked by Celina 
Chemistry
Given the reaction NH3(g) + O2(g)> NO(g) + energy, in what direction will the reaction shift if you: a)remove O2 (g) b)increase the pressure by decreasing the volume c)decrease the temperature d)add a catalyst
asked by Arianna 
Precalculus
Find the value for c for which the system is consistent and dependent. 3x + y = 5 4.5y = c + 9x Find the minimum value of f(x, y) = y – x + 1 for the polygonal convex set determined by this system of inequalities. x > 0 y > 0 2x + y< 4
asked by brandi 
Chemistry
How many stereoisomers are there for 1,2dichlorocyclopentane? The answer options are 1,2,3 & 4. I think it is 4 because there is one cis & one trans isomer,so when using the 2^n formula,the final answer is 2^2 =4.Is my approach correct? Need ur help
asked by Meenaakshi 
chemistry
Given the reaction 1/2 N2( g) + 3/2 H2 (g) ___> NH3 (g) +11.0kcal.Is this reaction exothermic or endothermic?
asked by faisal 
Chemistry(Please check)
Which of the following mixtures will be a buffer when dissolved in 1 liter of water? 0.10 mol Ba(OH)2 and 0.20 mol HCl 0.30 mol KCl and 0.30 mol HCl 0.40 mol NH3 and 0.40 mol HCl 0.20 mol HNO2 and 0.10 mol NaOH 0.20 mol HBr and 0.10 mol KOH My answer is
asked by Hannah 
History
Create a Metaphor and simile about the panama canal, the perspective of the untied states from panama canal, and from the perspective of panama canal from the untied states. and give three reason for each.
asked by Matt 
Chemistry
A quantity of 100 mL of .5M of HCl (aq) is mixed with 100 mL of .5M of NaOH (aq) in a constant pressure calorimeter. The initial temperature of the solutions is 22.30 C and the final temperature of the mixed solution is 25.00 C. What is "q" for solution
asked by Dante 
Statistics  Probability
A mutual fund company has six funds that invest in the U.S. market and four funds that invest in foreign markets. An investor wishes to create a mutual fund portfolio composed of two U.S. funds and two foreign funds. Unknown to this investor, one of the
asked by Esther 
Chemistry PLZ HELP!!!!!
write balanced equations of hydrogen with the following: a. potassium b. fluorine c. sulfur
asked by Maci 
MATHEMATICS
A piece of notebook paper is about 0.0032 inch thick. If you begin with a stack consisting of a single sheet and double the stack 25 times, how tall will the stack be in inches? How tall will it be in feet? (Hint: Write and solve an exponential equation to
asked by DAN 
Chemistry
N2 (g) + H2 (g) NH3 (g) + energy Name the direction of equilibrium shift  The pressure of the system is increased.  H2 is added to the system.  The temperature of the system is decreased.
asked by Anonymous 
Chemistry
At 55C, the K for the reaction: 2NO2(g) N2O4 is 1.15 a) write the equilibrium expression b) calculate the concentration of N2O4(g) present in equilibrium with 0.50 mole of NO2 Please help and explain
asked by Anonymous 
Chemistry ,Reactions at Electrodes during Electrol
Reactions at Electrodes during Electrolysis Which halfreaction will take place at the cathode during the electrolysis of molten MgCl2? 2Cl > Cl2 + 2e Cl2 + 2e > 2Cl Mg2+ + 2e > Mg Mg > Mg2+ + 2e Which halfreaction will take place at the cathode
asked by Mahtab 
Chemistry
4. Use the information above to write net ionic equations for the two reactions that you have observed. 5. For each reaction, write the two halfreactions that make it up and calculate the overall reaction potential by adding the two halfreactions. Each
asked by Please Check! 
Math
Perform the indicated operations and simplify: i^31
asked by Adrian 
Trig
Find the supplement of pi/6
asked by YOLO 
anthroplogy 101
Caste systems are most common in societies
asked by carmen 
college chem
A sample of 8.00 L of NH3 (ammonia) gas at 22 degrees and 735 torr is bubbled into a 0.500 L solution of 0.400 M HCl (hydrochloric acid). The Kb value for HCl is 1.8x10^5. Assuming all the NH3 dissolves and that the volume of the solution remains at 0.500
asked by Kimmytuma 
Calculus
For what values of x does 4x^68x^3+18 have a relative minimum
asked by Dandylove 
Calculus
The position of a particle on the xaxis at time t, t>0' is ln t. Find the average velocity of the particle for 1
asked by Dandylove 
boiling point
You are in a mountain range with atmospheric air pressure of 520 mmHg, and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure?
asked by Anonymous 
MATH
I have to make 4 square dog pens fit into a 169 square meter yard. the yard is square whole numbers If you square the yard it isn't whole numbers. 84.5 One of the pens is 24 square meters Please help me begin.
asked by SUZANNE 
Chemistry PLZ HELP!!!!!
which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3
asked by Maci 
Chemistry
Steam is compressed reversibly to liquid water at the boiling point 100C. The heat of vaporisation of water at 100C and 1.01325 bar is 2258Jg^1. Calculate for one mole of water in term of work done(w),q,H and U for the process
asked by Charles 
Physics (12th Grade)
The isothermal bulk modulus of elasticity of a gas is 1.5 * 100000 N/m^2. What will be its adiabatic bulk modulus of elasticity?
asked by Tools(plz help its really urgent) 
Chemistry PLZ HELP!!!!!
distinguish between aorphous and crystalline soilds and give an example of each
asked by Maci 
Chemistry PLEASE HELP!!
Questions: 1. In each test tube, a precipitate formed upon DROPWISE addition of the second reagent (steps 5 and 6). What are these precipitates? (a) First test tube with HgCl©ü : (b) Second test tube with SnCl©ü : 2. In each test tube, which reagent
asked by Maranda 
Calculus
Verify please and thank you~ Does the line (x7)/3=(y+8)/6=(z+4)/5 and the point P(10,2,1) determine a plane? Answer: Yes, it is a plane because when I substituted the point P(10,2,1) into the equation, I got the coordinates (1,1,1) If the coordinate
asked by Jenny 
Math
2x+4y= 6
asked by Quesha 
Life orientation
Substance abuse.5 ways in which the human or environmental problem impact on the community only in south africa
asked by Mpho 
math
the bag contains 20 red marbles and30 white marbles and 40 blue ones what is the ratioof red to blue marbles what is the ratio of white to red if one marble is drawn from the bag what is the probability that the marble will not be white??? need ansewr
asked by kristen 
chemistry
How many mL of 3% aqueous hydrogen peroxide solution can you make out of 100 mL of 35% aqueous hydrogen peroxide?
asked by Amanda 
chemistry
How many mL of 3% aqueous hydrogen peroxide solution can you make out of 100 mL of 35% aqueous hydrogen peroxide?
asked by Amanda 
math
with the babys in his arm mr greer weighed 180 pounds without the baby he weighed 165 1/2 pounds how much did the baby weigh plzzz be ast with ansewer
asked by kristen 
Chemistry
How many mL of .175M H3PO4 are needed to neutralize 15.00mL of .33M NaOH?
asked by Sam 
Math
Damien sets up a bucket to catch rain drops the bucket can hold 1 gallon. If each raindrop is mae of about 1/90 fluid ounce of water,how many raindrops will the bucket be able to hold?
asked by Shay 
discrete math
Suppose that a department contains 10 men and 17 women. How many ways are there to form a committee with 6 members if it must have strictly more women than men?
asked by carlton 
math
jimm read 42 pages of a book each day for 5 days on the next 3days he read 44pages 35 pages and 35 pages what was the avrage number of pages he read on the last 3days what was the avrage he read for all 8 days
asked by kristen 
Math
Sneakers were on sale for 25%off their original price. Lola bought a pair of sneakers that has an original price of $43.00. She also paid a sales tx of 7.25% on the sale price of the sneakers.How much did Lola pay for the pair of sneakers? Round to the
asked by Shaquanieta 
AAT
ã3tanx=3tanxcscxã3tanx
asked by JB 
physics
A man (mass = 78.6 kg) is jogging through the woods and runs straight into a large oak tree at 6.1 m/s. Rebound speed is measured at 5.2 m/s in the opposite direction. If the time of contact with the tree is 0.041s, what is the magnitude of the force that
asked by Miriam 
Chemistry PLZ HELP!!!!!
what types of close packed unit cells do most metals assume?
asked by Maci 
Chemistry
Write balanced net ionic equAtions. D) zinc chloride and excess ammonia E) cupric phosphate and lots of ammonia A) ammonia and excess zinc sulfate
asked by ALISON 
physics
A bullet of mass m = 5.89 g is fired into a block of mass M = 3.09 kg that is initially at rest on the edge of a smooth table. (The table top is 0.83 m above the floor.) The bullet ends up stuck in the block, and together they fly off the table and fall to
asked by Marc 
Chemistry
What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K?
asked by B 
science
A ball of mass m is attached by two strings to a vertical rod. as shown above. The entire system rotates at constant angular velocity about the axis of the rod. a)Assuming is large enough to keep both strings taut, find the force each string exerts on the
asked by tammy 
Math: Derivatives
Use the shortcut rules to mentally calculate the derivative of the given function f(x) = −x + (3/x) + 1 After deriving it, I got 1+(0/1)+0= 1 But this answer is wrong, and I don't know why. Thank You
asked by Nick 
Applied Calculus
If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height
asked by Trisha 
Chemistry
What is the volume occupied by 12.3 g of argon gas at a pressure of 1.17 atm and a temperature of 455K? Would formula be V=T/P? 388.89 L?
asked by B 
algebra
Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0. Solution:2
asked by Terry 
life orientation
critically discuss 5 wayz in which the human or environmental problem impect on the community
asked by nosiphosethu 
History
civil war > triumph of american democracy over european aristocracy. I'm supposed to write a paragraph about this, but I don't understand it.
asked by Lala 
social studies
what is the role of US government
asked by Yajat 
geometry
if a room measures 19 ft by 25 ft and covering thisroom with tile that costs .92 cents each how much would you spend
asked by chelsea 
Chemistry(Please check)
. The insoluble salts AV, B2W, C2X3, DY2, and EZ3, which were formed from the metal ions A+, B+, C3+, D2+, and E3+ and the nonmetal ions V1– , W2–, X2–, Y1–, and Z1–, all have the same Ksp value. The salt with the highest molar solubility is AV
asked by Hannah 
Geometry
(1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false
asked by becca 
Chemistry PLZ HELP!!!!!
how are intermolecular forces different from chemical bonds?
asked by Maci 
math plz help
how would you determine the number of diagonals in a regular 41gon ?
asked by jack 
Chemistry
What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K? Unable to understand formula suggested Dr. Bob. Please explain further.
asked by B 
calculus
let R be the region of the first quadrant bounded by the xaxis and the curve y=2xx^2. Find the volume produced when R is revolved around the Xaxis
asked by Jens 
Algebra 1
An empty box weighs 6 ounces.Jenna puts 12 calculators in the box.The total weight of the box and calculators is 96 ounces.Which equation models the weight,w,in ounces of each calculator?
asked by Wileesha 
math
if the odds agaisnt you winning are 1 to 7,what would the probability that you would win?
asked by anthony 
Statistics
You are responsible for quickly fixing your company¡¯s computer system when it crashes. You know that there are three possible sources of errors in the system: the disk drive, the memory and the operating system. From an analysis of historical data, you
asked by Esther 
English
Need to know how to correct this run on sentences. In some parts of Canada's Northwest Territory the only way to transport supplies is over frozen lakes being a ice road tucker is one of the most dangerous jobs in the worl.d.
asked by Cindy 
Math
2 round fountains which are silimiar but one measures 9'11"across and the other one measures 17'10".what would be the scale factor for the larger one?
asked by jazz hands 
Chemistry
What is the volume occupied by 12.3 g or argon gas at a pressure of 1.17 atm and a temperature of 455K? So...Dr. Bob... PV=nRT 1.17V=(12.3)(.08206)(455K) V=459.25/1.17 V=392.5L ???
asked by B 
Chemistry PLZ HELP!!!!!
write balanced equations of hydrogen with the following: a. potassium b. fluorine c. sulfur
asked by Maci 
tidewater tech
A British pharmaceutical company spent years and considerable funds on the development for a treatment for HIV patients. Now, with the protection afforded by patent rights, the company has the potential to reap enourmous gains. The government, in response,
asked by Anonymous 
Statistics
Alonzo applied for a job to be an administrative assistant.He had to take a typing test. His words per minute were translated into a zscore. If the zscore was 0, should he be hired? There were 47 applicants, and typing speed is very important.
asked by Jen 
math
What is 42q squared minus 19qt minus 35t squared?
asked by Brandi 
Math
If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height
asked by Trisha 
Calculus
Determine two sets of parametric equations for the line passing through the points P(1,7,1) and Q(3,4,4)  I got one of them but I don't know how to get a second parametric equation. first one: x=12s, y=7+3s, z=13s
asked by Jenny 
grammar
which statement is suitable for a peruasive essy? As a taxpayer, I get very upset when the government raises interest rates. The state should increase driver's registration fees to pay for the new highway overpass. Lighting has been known to strike in the
asked by kevin 
chemistry
if heat of dissolution dissolution of NaCl=1700K.J/mole find heat of dissolution 11.7gm of NaCl in water
asked by habiba 
Chemistry(Please check)
. Ksp for Fe(IO3)3 is 1014. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 104M and [IO3] = 105M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would
asked by Hannah 
Chemistry
100g of a saturated solution of sodium nitrate at 43°C is cooled quickly with stirring to 10°C. How many grams of the solute will crystallize?
asked by Veronica 
Economics: Am I right?
I am completely stuck on these two questions. I have read my chapter, but I am still doubting that I got the answers correct. 1.A decrease in aggregate demand causes a decrease in ______ only in the short run, but causes a decrease in ______ in both the
asked by Bobbie 
probability question
if the odds agaisnt you winning are 1 to 7,what would the probability that you would win?
asked by jazz hands 
Geometry
how would you determine the number of diagonals in a regular 41gon ?
asked by Chelsea 
geometry
(1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false
asked by mica 
chemistry
If the.mass of 100 cm of magnesium is 1.02g, what is the mass of the magnesium if its 1.5 cm?????????????? Help!!!!!
asked by jerrica 
math
Do 3x^27x+2=0 verify that the sum of the solution is b/a and verify that the product of the solution is c/a
asked by Emma 
Geometry help check
(1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false
asked by chelsea 
English
Good Easter to you and your family, too, Writeacher. I urgently need you to check this rephrase of the modern translation of the fight between Beowulf and Grendel by Seamus Heaney. I need to be more precise in the description of the fight. Nor did the
asked by Matthew 
chemistry
AgNO3+NaCL=NaNo3+AgCl heat change=36 heat of percipitation of 2 moles of AgCl???
asked by habiba 
f/celsius problem
5(30*32)/9= im confused 5 times 2=10/9 is this correct
asked by jazz hands 
chemistry
if heat of precipitation of AgCl=36k.j/mole find heat of precipitation of 287 gm of AgCl knowing that (Ag=108 . CL35.5)
asked by habiba 
math
please answer this true or false. if all sides of the quadilateral are conguent,the quadlateral is a RHOMBUS ? is it false
asked by jazz hands 
Calculus
Consider line segments which are tangent to a point on the right half (x>0) of the curve y = x^2+7 and connect the tangent point to the xaxis. If the tangent point is close to the yaxis, the line segment is long. If the tangent point is far from the
asked by Lynnn 
physics
If the strip is 29 mm long, how far is the maximum deviation of the strip from the straight orientation? (The deviation is measured from the straight orientation from the interface of the two strips.)Radius of curvature is 53.7 m
asked by Anonymous 
math
18 roses and 6 tulips coast $66. What is the unit price for each kind of flower?
asked by monica 
ALGEBRA
Find the functional values requested in the problem. h(x)=5 x1
asked by Daniel 
science
bob and sue are initially standing still on frictionless ice. bob weighs 500n . they push against each other and sue acquires an acceleration of 5m/s while bob acquires acceleration of 3m/s. what is sue mass
asked by dam 
Math
A contractor gives a quote of $21,060 to build an 18 foot by 24 foot barn. What is the building cost per square foot?
asked by Casey 
Algebra 1a
8 Increased by b The translation is
asked by Dede 
English
Can you please check these sentences on history, please? Thank you, Writeacher. 1) In the 8th and the 9th centuries Scandinavian invaders, known as the Vikings, attacked the monasteries and villages near the water and robbed them. 2) King Alfred the Great
asked by Matthew 
ALGEBRA
Find three ordered pairs that satisfy the equation. y = 5 x  4
asked by Daniel 
Physical Science
I need some help. I have tried working this problem and can't get it. A scale model of the solar system is being constructed where 40cm of the model represents 0.5 AU of actual distance. What is the model dimension, in meters, for the distance of Jupiter
asked by mel 
Applied Calculus
An underground electricity cable is to be laid between two boat docks on opposite banks of a river. One boat dock is 600 feet downstream from the other. The river is 200 feet wide. If the cost of laying the cable is $50 per foot under water and $30 per
asked by Trisha 
math
Let f(x) = ax^3 + bx^2 + 3x – 4. If f(x) is divided by (x – 2), the remainder is 2. When it is divided by (x – 1), the remainder is 2. Find a and b.
asked by rick 
Physical Science
I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?
asked by mel 
english
persuasive appeals (A) tone (D) ethos (E) pathos (B) logos (C) A) an appeal to logic B) the emotions that a speaker demonstrates towards his or her subject C) an appeal to the credibility of the speaker D) an appeal to a sense of right and wrong E) devices
asked by kevin 
Physical Science
I need some help. I have tried working this problem and can't get it. What is the mass of the Sun, in kilograms, based on the revolution period and distance from Venus?
asked by mel 
Applied Calculus
If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height
asked by Trisha 
Math
June rides the 15 foot tall ferris wheel at the city fair. She enters the ride at the bottom. If the ride makes 8 complete rotations before stopping, what is the total distance that June travels?
asked by Joe 
Calculus
Let L1 be the line with the vector equation r= (2,3) +s(1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t7, teR. Are L1 and L2 perpendicular? How do you know?
asked by Samantha 
writing
Can someone help me describe the peruasive appeal of Dr. Kings "I Have a Dream" speech, and refering persuasive devices and literary elements in the answer
asked by kevin 
Calculus
Are the points P(1,2), Q(7,3) and R(2,1) o the line with vector equation r=(19,5) +s(6,1), SeR
asked by Jake 
Calculus
Which plane goes through the origin and is perpendicular to the line r=(2,2,1) + s(2,3,4), seR? a) 2x2y+z=0 b) 2x+3y4z=0 c) 2x+3y+z4=0 d) none of the above. I got D, none of the above. I have substituted and couldn't find the answer equal to zero.
asked by Jake 
government
For what reasons have many developing African nations rejected capitalism in favor of various forms of socialism? Can someone help me?
asked by kevin 
government
what are some of the drawbacks of globalization for the American economy? Please can someone help me?
asked by kevin 
Chemistry(Please help)
The solubility product expression for mercury(I) iodide, Hg2I2 is Ksp = ? My answer is [Hg2^2+^][2I^^]^2^ Would you agree?
asked by Hannah 
physics
An automobile traveling 95 overtakes a 1.10long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What
asked by kelly 
English
Can I use the simple past (as used by Shakespeare) to refer to the initial relationship between Prospero and Caliban? I added a few more sentences. 1) One day Caliban tried to rape Miranda, so Prospero gave up taking care of him. 2) At the beginning
asked by Matthew 
ALGEBRA
Solve the system. $ \left\{ \begin{tabular}{l} $ y = x + {\color{red}2} $ \\ $ y = {\color{red}3} x + {\color{red}10} $ \end{tabular} \right. $
asked by Daniel 
Trigdesperate
f(x)=sin2x and g(x)=1/2tanx for x is the element of [90;180] 8.1)calculate the xcoordinates of the points of intersection of f and g.
asked by Piwo 
Trigonometry
Find the supplement of 8pi/17.
asked by Rina 
English
I left out the following sentences. Can you please check them? I hope they are the last on the same subject. I really rely on your invaluable help. 1) Caliban feels like a slave. He has o obey Prospero's orders because of Prospero's magic powers. There is
asked by Matthew 
physics
State how the centripetal force is provided in the case of a satelite orbiting the earth
asked by Cassandra 
msu
As compared to its first year of operation, ABC company grew 8% in the second year and an additional 2% per year for the next two years. If total growth for years 24 was $45,000 over the first year’s sales of $150,000, how much did ABC grow in year 2?
asked by nicole 
English
Does everybody have a dark side? I need to write 4 paragraphs and I don't know how to start.
asked by Rina 
math
width to length ratio is 2:3 what is the lenght of the picnic table if the width is 26
asked by Anonymous 
interior decorating
the principle of color
asked by sandra 
American Literature
To what does the title of the play Dutchman by Amiri Baraka allude?
asked by Eric 
PHYSICS
A beam containing one hundred billion (i.e. 1x10^11) electrons moves perpendicula to a 4.0 Tesla magnetic field and is deflected by a 12 N force. (The electrons has a negative charge of 1.6 x 10^19) How much total charge is contained in the beam? How
asked by GRISSELL 
PHYSICS
A 0.75 Tesla bar magnet is placed inside of a coil made up of 350 turns of wire, each loop having an area of 0.002 m^2. How much electromagnetic flux is created when the magnet is quickly pulled out of the coil? How much voltage is induced in the coil if
asked by GRISSELL 
Trig
A ferris wheel has a 14 meter diameter and turns counterclockwise at 6 rpm. a) Assuming that the center of the wheel is the origin of an xy coordinate plane, write functions to find the position (x,y) of a rider that starts at the bottom of the wheel. b)
asked by Lisa 
Calculus
The seesaw principle: As you probably know, any two persons can balance each other when sitting on opposite sides of a seesaw, regardless of their weights. It is only necessary that each person contribute the same moment â€” calculated by multiplying
asked by chamy 
Science
There are two objects of the same size.However, one object is made of wood, and the other object is made of plastic. Which of the following properties of the objects will be the same? A)mass B)texture C)volume D)weight Thanks!!!
asked by Bella help please 
scientist
Describe the changes in scientific knowledge?
asked by Sydney 
Probability
Service time, T, at an auto center has a Weibull distribution with parameters θ=3.7 and β=1.35. What is the probability that at least 8 of the next 10 customers will have to wait more than 4.69 hours? What is the expected number of customers that will
asked by Jack 
Chemistry
A 1.5 liter flask is filled with nitrogen at a pressure of 12 atmospheres. What size flask would be required to hold this gas at a pressure of 2.0 atmosphere?
asked by Imani 
Algebra
solve: (1/(x10)+(1/20)=(1/(20(x^2100))
asked by Jason 
science
If 1.5 gals of 70 degree water is mixed with .25 gals of 32 degree water what would the temprature be?
asked by kevin 
Chemistry PLZ HELP!!!!!
explain the difference between hydrogen bonds and dipole dipole forces.
asked by Maci 
english
Choose and Place MLA, APA, or Both in the blank. _____1. In a work with a single author, the author’s last name and initials are listed in the works cited entries. _____2. In a work with a single author, the author’s full last name and first name are
asked by john 
chemistry
You have two SCUBA tanks, one containing air( 80% 20%) and the other containing a nitrox mix that is 60% nigtrogen and 40% oxygen. The volume of each tank is 10.00 L. Determine the number of moles of nitrogen and oxygen in the air tank.
asked by danila 
Chemistry PLZ HELP!!!!!
what conditions must exist for a polyatomic molecule to be nonpolar?
asked by Maci 
statistics
the mean annual income for adult women in one city is and the standard deviation of the incomes is The distribution of incomes is skewed to the right. For samples of size 30, which of the following statements best describes the sampling distribution of the
asked by Taisha 
Chemistry
What is the balanced equation of gaseous phosphorus pentachloride decomposed to chlorine gas and phosphorus trichloride.
asked by Allyson 
English
1. what sources should you include in your works cited list? a. all of the sources that you read whether you used them in the paper. b. only the sources that have a parenthetical citation in your paper. c. most of the sources that have a parenthetical
asked by jay 
Statistics  Math (Please Please help!!)
You are an owner of a firm that manages other small manufacturing companies, which pay you to employ temporary salespersons to sell their products. The owner of one of these firms wants to increase their sales and promised to give you a bonus of $12,000 if
asked by Esther 
manotriy
Surveys conducted in the months after 9/11 found a growing willingness on the part of the American public to
asked by monty 
Math
Brandon's bedroom floor is 12ft by 8ft. How many square feet of carpet are needed to replace his old carpet?
asked by Joe 
physical science
What is the Ratio for Al2(CrO4)3
asked by Anonymous 
Physics (Please help!)
Three resistors of different values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produced? I can only find five... but the answer key says eight.
asked by DCM 
Chemistry(Please help)
What is the pH of a 5.06E2 M aqueous solution of sodium acetate? I know that I would set this up the same way I did for the previous question that I posted. I am just confused on how to find the Ka. I know it is kw/kb but for what compound is what I do
asked by Hannah 
physics
An automobile traveling 95 overtakes a 1.10long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What
asked by kelly 
math
a monkey is jumping 5 meter in length . a tree is 500 meter in length . how many jumping is required to reach the top of the tree by that monkey?
asked by sangvi 
writing
what happens during a doctor's visit?
asked by Celest 
us history
what did the constitution do and whawt were the effects of the constitution
asked by Anonymous 
Chemistry
What are the general equations for reaction of 1. Strong acid and weak base 2. Strong base and weak acid?
asked by chamy 
Math
The ratio of Maya's beads to Kayla's beads was12:7. After Maya bought another 28 beads and Kayla gave away 32 beads, 5/7 of Kayla's beads were left. How many more beads did Maya have than Kayla in the beginning? Find the ratio of Maya's beads to Kayla's
asked by T 
Chemistry
A gas sample has an initial volume of 4.5 liters at a pressure of 731 mmHg. If the volume is increased to 8.9 liters, what is the pressure?
asked by B 
Calculus
An open hemispherical bowl of radius R is slowly draining through a small hole of radius r in the bottom of the bowl. Let g be the acceleration due to gravity and y be the depth of the water (which means the distance from the water surface to the hole).
asked by chamy 
Math
June rides the 15 foot tall ferris wheel at the city fair. She enters the ride at the bottom. If the ride makes 8 complete rotations before stopping, what is the total distance that June travels?
asked by Cathy 
Math
A jar contains 6 red marbles and 10 blur marbles all of equal size. if Dominic were to randomly select 1 marble without replacement and then select another marble from the jar, what would be the probability of selecting 2 red marbles from the jar.
asked by Lori 
physics
Three point charges are arranged as shown. − + + −6.1 nC and 1.6 nC .4m apart 1.6 nC and 3 nC .088m apart What is the electric ﬁeld strength at 1.8 m to the right of the mid
asked by amanda and leah 
Chemistry
Calculate the molality of a solution prepared by dissolving 31.6 g of Fe2O3 in 750. g of water
asked by Tina 
Physics
An air bubble of volume 15 cc is formed at a depth of 50 m in a lake. If the temperature of the bubble while rising remains constant then what will be the volume of the bubble at the surface?(Given: g=10 m/s2 & atm. pressure = 1.0 * 100000 Pa)
asked by Tulika 
chemistry
according to american insurance companies a driver will travel 12,000miles in a single year.gasoline may be taken as primarily C8H18,octane, and the reaction with dioxygen is given below.the driver's vehicle gets 25.0miles per gallon.the density of octane
asked by karen 
6th G Math
Sam has started babysitting to earn extra money. On Thursday night she earned $26, on Friday night she earned $19, and on Saturday night she earned $24. What is the mean amount of money she earned during the weekend?
asked by Lauren 
to ms.sue
i mean when you like visit the doctor. when you go to a doctor's appointment.
asked by Celest 
Math
In archery class, Jocelyn missed the target 5 times in 40 shots. What is the probability that her next shot will miss the target?
asked by Max 
Calculus
Determine the value of k that makes the line (x+2)/4=(y+1)/5=(z3)/3 and r=(1,3,6 +s(2k,2,k), SeR, perpendicular.
asked by Jenny 
Precalculus
1)Which term best describes the linear programming situation represented by x+y=2 why is the answer infeasible? 2)Describe the linear programming situation for this system of inequalities. x < 1 y > 0 3x + y < 5 why is the answer unbounded?
asked by hanna 
Precalculus
1)Which of the following results in the graph of f(x) = x2 being expanded vertically by a factor of 4? the answer is f(x) = 4x2. can you explain how. 2)Which is true for the graph of y=(x^29)/(x^24). the answer is vertical asymptotes at x = ±2 . please
asked by bordo 
Chemistry PLZ HELP!!!!!
which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3
asked by Maci 
accounting
which one of the following contingencies must be accrued on the balance sheet
asked by jo 
science
Rank the species from strongest to weakest base: Cl, OH,NH2
asked by Charlie 
Physics
Compute the linear momentum and angular momentum of a Frisbee of mass 0.160 kg if it has a linear speed of 2.00 m/s and an angular velocity of 50.0 rad/s. Treat the Frisbee as a uniform disk of radius 15.0 cm.
asked by Nem 
Chemistry PLZ HELP!!!!!
which intermolecular forces would exist between molecules of: a. H2S b. H2O c.O2 d. SiH4 e. HCl f. CH3Cl g. CO2 h. NH3
asked by Maci 
Chemistry
How many mL of .48 M NaOH are needed to react with 2.00 moles of H3PO4?
asked by Sam 
physicsHS
Just as a car tops a 49 meter high hill with a speed of 77 km/h it runs out of gas and coasts from there, without friction or drag. How high, to the nearest meter, will the car coast up the next hill? plzzz help!
asked by lenny 
chemistry redox titration
calculate the volume of a 0.02M mno4 solution that is required to react completely with 10.0ml of 0.1M c2o42
asked by carla 
Science 4th Grade
Bats and dolphins both hear a ______ than humans do... a.smaller range of pitches b.smaller range of frequencies c.larger range of resonances d.larger range of pitches and frequencies
asked by Visitor 
Chemistry
Why B(CH3)3 cannot be Lewis Base??
asked by Charlie 
History
What struggle was there between the president and Congress for dominant political power within the federal government from 18501868? I know there was the reconstruction problem and how congress basically took over. What else?
asked by Lala 
investments
my broker recommends that i purchase a stock for $60.00. stock pays $2.40 in annual dividends and expects to grow 8%/year. Is this a good buy?
asked by wjc 
chem
If 0.208g of an unknown salt of oxalate ion requires 25mL of 0.02 M MnO4^ solution, calculate the molar mass and write the molecular formula of the unknown ( oxalare is the anion, what is the cation?).
asked by mike 
Physics (12th Grade)
What will be the amount of work done in increasing the volume of 10 mols of an ideal gas from one litre to 20 litre at 0C?
asked by Tulika 
Science
I need help in Science Project. The topic is called "How does the size affect the force of magnetism". I didn't see any procedure in how to do this particular topic can you help me?
asked by Richard 
Chemistry
In a coffee cup calorimeter, 50.00 mL of HNO3 (aq) and 50.00 mL of KOH(aq) were mixed. The temperature of the resultant solution increased 6.5 C. What is the Delta H of this reaction?
asked by Jaime 
math
marcie, kim and yvonne are on the same softball team. (A). During the last season . Marcie hit 3 less than twice the number of home runs that kim hit let h represent the number of home runs that kim hit . write an expression that represents the number of
asked by john 
Chemistry
Helium  oxygen mixture is used by deep sea divers in preference to nitrogen  oxygen mixture. Why?
asked by Molly(its urgent)