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2012
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Questions Asked on April 8, 2012

The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest
1. 25 answers
2. asked by kevin
3. 11,240 views
The solubility product expression for mercury(I) iodide, Hg2I2 is Ksp = ?My answer is [Hg2^2+^][2I^-^]^2^ Would you agree?
1. 7 answers
2. asked by Hannah
3. 8,798 views
An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road.Q1: If
1. 2 answers
2. asked by kelly
3. 6,531 views
Find how many positive integers with exactly four decimal digits, that is, positive integers between 1000 and 9999 inclusive,
1. 1 answer
2. asked by carlton
3. 5,277 views
If a ball is thrown directly upwards with twice the initial speed of another, how muchhigher will it be at its apex? A) 8 times
1. 1 answer
2. asked by DCM
3. 5,248 views
Find the area of the rhombus. Leave your answer in simpliest radical form.Looks like kite the left sied top corner is 60 degrees
1. 1 answer
2. asked by kevin
3. 4,316 views
if f varies jointly as q^2 and h, and if f = 72 when q = 3 and h = 4, find h when f = 48 and q = 2
1. 2 answers
2. asked by Jason
3. 4,040 views
Write a quadratic equation with real coefficients if one of the solutions is -5 + 7i
1. 1 answer
2. asked by Jill
3. 3,601 views
An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is
1. 1 answer
2. asked by Tony
3. 3,317 views
Can you please check these sentences on history, please? Thank you, Writeacher.1) In the 8th and the 9th centuries Scandinavian
1. 4 answers
2. asked by Matthew
3. 3,278 views
A ball of mass m is attached by two strings to a vertical rod. as shown above. The entire system rotates at constant angular
1. 1 answer
2. asked by tammy
3. 2,970 views
The Ksp values for three salts are given:AgCl = 1.0e-10 Ag2CO3 = 6.3e-10 Ag3PO4 = 2.0e-21 Determine the order of solubility for
1. 3 answers
2. asked by Hannah
3. 2,614 views
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
1. 1 answer
2. asked by Emily
3. 2,381 views
A small car of mass 985 kg is parked behind a small truck of mass 1551 kg on a level road. The brakes of both the car and the
1. 1 answer
2. asked by Amber
3. 2,380 views
How many stereoisomers are there for 1,2-dichlorocyclopentane?The answer options are 1,2,3 & 4. I think it is 4 because there is
1. 3 answers
2. asked by Meenaakshi
3. 2,162 views
If Will gives Molly $9 he will have the same amount as her. If Molly gives will $9 the ratio of the money she has to the money
1. 3 answers
2. asked by T
3. 2,030 views
A 40 kg child is standing on the edge of a merry-go-round in a playground. Before they were deemed too dangerous, these were
1. 1 answer
2. asked by Taylor
3. 2,025 views
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
1. 3 answers
2. asked by Kimmytuma
3. 1,926 views
what conditions must exist for a polyatomic molecule to be nonpolar?
1. 1 answer
2. asked by Maci
3. 1,922 views
4. Use the information above to write net ionic equations for the two reactions that you have observed.5. For each reaction,
1. 5 answers
2. asked by Please Check!
3. 1,776 views
Can someone help me describe the peruasive appeal of Dr. Kings "I Have a Dream" speech, and refering persuasive devices and
1. 2 answers
2. asked by kevin
3. 1,740 views
The position of a particle on the x-axis at time t, t>0' is ln t. Find the average velocity of the particle for 1<=t<=e .
1. 2 answers
2. asked by Dandylove
3. 1,476 views
At 55C, the K for the reaction: 2NO2(g) <--> N2O4 is 1.15a) write the equilibrium expression b) calculate the concentration of
1. 5 answers
2. asked by Anonymous
3. 1,456 views
Use the shortcut rules to mentally calculate the derivative of the given functionf(x) = −x + (3/x) + 1 After deriving it, I
1. 3 answers
2. asked by Nick
3. 1,444 views
Tell whether the bonds between the following atoms are polar covalent or pure covalent bonds.a. Si-Si b. H-O c. C-H d. C-O e.
1. 2 answers
2. asked by Maci
3. 1,433 views
persuasive appeals (A)tone (D) ethos (E) pathos (B) logos (C) A) an appeal to logic B) the emotions that a speaker demonstrates
1. 6 answers
2. asked by kevin
3. 1,403 views
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
1. 4 answers
2. asked by Donald Trump
3. 1,395 views
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
1. 2 answers
2. asked by Imani
3. 1,334 views
(1)Is a trapezoid a square? false (2) if all sides of a quadilateralare congruent,the quadilateral is a rhombis? true or false
1. 1 answer
2. asked by becca
3. 1,328 views
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
1. 1 answer
2. asked by Hannah
3. 1,249 views
A 1.3 kg steel ball and 8 m cord of negligi-ble mass make up a simple pendulum that can pivot without friction about the point
1. 2 answers
2. asked by Amber
3. 1,235 views
2 HgCl2 (aq) + SnCl2 (aq) --> SnCl4 (aq) + Hg2Cl2 (s)Hg2Cl2 (aq) + SnCl2 (aq) --> 2Hg (s) + SnCl4 (aq) For each reaction, write
1. 0 answers
2. asked by Betsy
3. 1,181 views
1)Which term best describes the linear programming situation represented by x+y=2why is the answer infeasible? 2)Describe the
1. 0 answers
2. asked by hanna
3. 1,177 views
The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest
1. 2 answers
2. asked by kevin
3. 1,174 views
Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes.
1. 1 answer
2. asked by Sara HELP ME PLEASE
3. 1,143 views
An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road.Q1: If
1. 3 answers
2. asked by kelly
3. 1,117 views
This is an experiment for a synthesis of aspirin labmass of salicylic acid = 2.005 g mass of acetic acid = ? moles of acetic
1. 4 answers
2. asked by Priscilla
3. 1,081 views
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?
1. 1 answer
2. asked by Tools(plz help its really urgent)
3. 1,077 views
Can I use the simple past (as used by Shakespeare) to refer to the initial relationship between Prospero and Caliban? I added a
1. 1 answer
2. asked by Matthew
3. 1,072 views
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
1. 2 answers
2. asked by jay
3. 1,072 views
if the odds agaisnt you winning are 1 to 7,what would the probability that you would win?
1. 1 answer
2. asked by jazz hands
3. 1,060 views
what do we mean when we describe a molecule as being polar?
1. 2 answers
2. asked by Maci
3. 1,057 views
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,
1. 1 answer
2. asked by Samantha
3. 1,029 views
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
1. 1 answer
2. asked by lenny
3. 1,021 views
marcie, kim and yvonne are on the same softball team.(A). During the last season . Marcie hit 3 less than twice the number of
1. 1 answer
2. asked by john
3. 997 views
Explain why the plane with Cartesian equation 2x+5z-3=0 never intersects the y-axis.Answer:Because there is no y-value in the
1. 1 answer
2. asked by Jenny
3. 985 views
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
1. 1 answer
2. asked by DAN
3. 955 views
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
1. 2 answers
2. asked by Trisha
3. 943 views
Given the reaction 1/2 N2( g) + 3/2 H2 (g) ___> NH3 (g) +11.0kcal.Is this reaction exothermic or endothermic?
1. 1 answer
2. asked by faisal
3. 941 views
An underground electricity cable is to be laid between two boat docks on opposite banks of a river. One boat dock is 600 feet
1. 1 answer
2. asked by Trisha
3. 941 views
1)Which of the following results in the graph of f(x) = x2 being expanded vertically by a factor of 4? the answer isf(x) = 4x2.
1. 0 answers
2. asked by bordo
3. 919 views
If a spring stretches 0.9 m when a 3-kg weight is attached to it, how much will it stretch when a 4-kg weight is attached to it?
1. 1 answer
2. asked by gwen
3. 915 views
bob and sue are initially standing still on frictionless ice. bob weighs 500n . they push against each other and sue acquires an
1. 0 answers
2. asked by dam
3. 909 views
Questions:1. In each test tube, a precipitate formed upon DROPWISE addition of the second reagent (steps 5 and 6). What are
1. 2 answers
2. asked by Maranda
3. 908 views
Which plane goes through the origin and is perpendicular to the line r=(2,-2,1) + s(2,3,-4), seR?a) 2x-2y+z=0 b) 2x+3y-4z=0 c)
1. 1 answer
2. asked by Jake
3. 900 views
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
1. 2 answers
2. asked by Trisha
3. 893 views
Steam is compressed reversibly to liquid water at the boiling point 100C. The heat of vaporisation of water at 100C and 1.01325
1. 0 answers
2. asked by Charles
3. 869 views
For what values of x does 4x^6-8x^3+18 have a relative minimum
1. 1 answer
2. asked by Dandylove
3. 864 views
solve the system of linear equations2x+2y=1 3x-y=6 thanks
1. 3 answers
2. asked by sandra
3. 862 views
What are the general equations for reaction of1. Strong acid and weak base 2. Strong base and weak acid?
1. 1 answer
2. asked by chamy
3. 845 views
((k^2+6k+9)/(k^2+12k+27))×(k^2+9)/((k^2+12k+27))express in lowest terms
1. 2 answers
2. asked by Jason
3. 825 views
Find the supplement of 8pi/17.
1. 3 answers
2. asked by Rina
3. 811 views
Helium - oxygen mixture is used by deep sea divers in preference to nitrogen - oxygen mixture. Why?
1. 3 answers
2. asked by Molly(its urgent)
3. 807 views
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
1. 1 answer
2. asked by Miriam
3. 802 views
. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the
1. 1 answer
2. asked by Hannah
3. 797 views
The seesaw principle: As you probably know, any two persons can balance each otherwhen sitting on opposite sides of a seesaw,
1. 1 answer
2. asked by chamy
3. 785 views
Rank the species from strongest to weakest base:Cl-, OH-,NH2
1. 0 answers
2. asked by Charlie
3. 784 views
The federal government employs approximately how many people?1. 1-2 million 2. 2.5-2.7 million 3. 3-4 million 4. over 5 million
1. 3 answers
2. asked by sham
3. 781 views
A ferris wheel has a 14 meter diameter and turns counterclockwise at 6 rpm.a) Assuming that the center of the wheel is the
1. 1 answer
2. asked by Lisa
3. 759 views
the mean annual income for adult women in one city is and the standard deviation of the incomes is The distribution of incomes
1. 0 answers
2. asked by Taisha
3. 754 views
For what reasons have many developing African nations rejected capitalism in favor of various forms of socialism?Can someone
1. 1 answer
2. asked by kevin
3. 752 views
Predict what type of bonging predominates in each of the following.a. AsCl3 b. LiBr c. CuNi d. SO2 e. XeF6 f. Fe g. MnF2 h. HCN
1. 2 answers
2. asked by Maci
3. 751 views
A British pharmaceutical company spent years and considerable funds on the development for a treatment for HIV patients. Now,
1. 1 answer
2. asked by Anonymous
3. 751 views
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
1. 3 answers
2. asked by Tulika
3. 741 views
Perform the indicated operations and simplify:i^-31
1. 1 answer
2. asked by Adrian
3. 737 views
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
1. 1 answer
2. asked by Lynnn
3. 735 views
The solubility product expression for mercury(I) iodide, Hg2I2 is Ksp = ?My answer is [Hg2^2+^][2I^-^]^2^ Would you agree?
1. 1 answer
2. asked by Hannah
3. 731 views
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
1. 3 answers
2. asked by john
3. 728 views
f(x)=sin2x and g(x)=1/2tanx for x is the element of [-90;180]8.1)calculate the x-coordinates of the points of intersection of f
1. 1 answer
2. asked by Piwo
3. 713 views
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
1. 2 answers
2. asked by Shaquanieta
3. 713 views
An open hemispherical bowl of radius R is slowlydraining through a small hole of radius r in the bottom of the bowl. Let g be
1. 0 answers
2. asked by chamy
3. 703 views
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
1. 1 answer
2. asked by Matthew
3. 692 views
A beam containing one hundred billion (i.e. 1x10^11) electrons moves perpendicula to a 4.0 Tesla magnetic field and is deflected
1. 1 answer
2. asked by GRISSELL
3. 691 views
What is the pH of a 5.06E-2 M aqueous solution of sodium acetate?I know that I would set this up the same way I did for the
1. 1 answer
2. asked by Hannah
3. 685 views
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
1. 1 answer
2. asked by SUZANNE
3. 681 views
Why B(CH3)3 cannot be Lewis Base??
1. 1 answer
2. asked by Charlie
3. 676 views
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
1. 1 answer
2. asked by Terry
3. 675 views
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
1. 1 answer
2. asked by mel
3. 670 views
If you can see the face of a friend who is underwater, can she also see you?Please explain. Thanks :)
1. 1 answer
2. asked by Celina
3. 669 views
Sam has started babysitting to earn extra money. On Thursday night she earned $26, on Friday night she earned $19, and on
1. 1 answer
2. asked by Lauren
3. 647 views
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
1. 0 answers
2. asked by Jack
3. 632 views
Brandon's bedroom floor is 12ft by 8ft. How many square feet of carpet are needed to replace his old carpet?
1. 1 answer
2. asked by Joe
3. 631 views
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
1. 1 answer
2. asked by mel
3. 628 views
2. At 600 K the decomposition of gas ohase nitroethane (CH3CH2NO2) is first order with a rate constant of 1.9*10^-4 s^-1.CH3CH2N
1. 3 answers
2. asked by Tasneem
3. 627 views
. The insoluble salts AV, B2W, C2X3, DY2, and EZ3, which were formed from the metal ions A+, B+, C3+, D2+, and E3+ and the
1. 1 answer
2. asked by Hannah
3. 624 views
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
1. 0 answers
2. asked by Bobbie
3. 623 views
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.
1. 1 answer
2. asked by Marc
3. 616 views
Find the supplement of pi/6
1. 1 answer
2. asked by YOLO
3. 612 views
what shape would you expect a molecule to hove that was based on an atom with only two bonding pairs of electrons? Three bonding
1. 2 answers
2. asked by Maci
3. 597 views
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
1. 1 answer
2. asked by Bella help please
3. 596 views

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