Questions Asked on
March 18, 2012

Introduction to statistics
A vending machine dispenses coffee into an eightounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of .03 ounce. You can allow the cup to OVERFILL 1% of the time. What amount should you set as the mean
asked by Shamin 
inverse trig HELP PLEASE!!
Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.
asked by Adrianna 
Chemistry
Acid spills are often neutralized with sodium carbonate. For example Na2CO3 (s) + H2SO4 (aq) Na2SO4 (aq) + CO2 (g) + H2O (l) An instructor dropped a 2.50 L bottle of 18.0 M H2SO4 on a cement floor. How much sodium carbonate would be required to
asked by Elisa 
physics
What will be the equilibrium temperature when a 245g block of copper at 285„aC is placed in a 145g aluminum calorimeter cup containing 825g of water at 12.0„aC?
asked by lisa 
Physics
You have a 2.00 kg block of lead. Lead melts at 327.5°C. CPb = 130.0 , and ï„Hf for lead is 2.04 Ã— 104 J/kg. Say you start at room temperature (25.0°C). How much heat must you transfer to melt all the lead?
asked by Pat 
chemistry
Write an equation to represent the dissociation of propionic acid (CH3CH2COOH) in water. (Type your answer using the format H2O for H2O and [NH4]+ for NH4+. Use the lowest possible coefficients.)
asked by Anonymous 
physics
Planet X has the same mass as earth, but its radius is only half as big. How does the gravity on this planet compare with the gravity on our planet earth?
asked by Stephanie 
physics
when a force (5*10^4) is applied on a spring then it get expand by 5*10^2.a small mass(0.01kg) is hanged at bottm end.after coming in equilibrium a force [f(t)=20cos(wt)] is applied at the top end for oscillation.what is the distance of small(0.01) from
asked by bhawani 
Chemistry
What is the complete chemical equation? Al(s) + Cu(CH3COO)2(aq) > ?
asked by Zoe 
statistics
A student is interested in whether students who study with music playing devote as much attention to their studies as do students who study under quiet conditions (he believes that studying under quiet conditions leads to better attention). he randomly
asked by kelly 
triganometry
A landscape architect is designing a triangular garden to fit in the corner of a lot. The corner of the lot forms an angle of 50°, and the sides of the garden including this angle are to be 12 feet and 14 feet, respectively. Find, to the nearest integer,
asked by Ayesha 
Physics
A force of 60 N is exerted on one end of a 1.0mlong lever. The other end of the lever is attached to a rotating rod that is perpendicular to the lever. By pushing down on the end of the lever, you can rotate the rod. If the force on the lever is exerted
asked by Mr. R 
Chemistry
A 25.00 mL sample of a clear saturated solution of PbI2 requires 14.3 mL of a certain AgNO3(aq) for its titration. I^(from satd PbI2)+ Ag^+(from AgNO3)= AgI(s) So, this is where I am. using the Ksp equation for PbI2: 7.1*10^9=4x^3 solving for x gives me
asked by Ash 
Physics
A camera flashtube requires 5.0J of energy per flash. The flash duration is 1.0 ms. (a) what power does the flashtube use while it's flashing? (b)If the flashtube operates at 200V, what capacitance is needed to supply the flash energy? (c) If the flashtube
asked by Britanee 
algebra 2
two cars leave an intersection. one car travels north; the other east. when the car traveling north had gone 15 miles, the distance between the cars was 5 mile more than the distance traveled by the car heading east.how far had the east bound car traveled?
asked by amanda 
algebra
given the function k described by k(x)=x+20 find each of the following k(0)= k(12)= k(9)= k(15)= k(y+1)=
asked by coco 
math
janice scored 85% on the last test. she answered 34 questions correctly. how many questions were on the test?
asked by jocelyn 
geography
1. What Argentine river has the same name as one of the states in the United States? The Colorado River 2. What landform is part of the northwest corner of Africa? mountains 3. What is the capital of Germany? Berlin 4. What natural boundary separates
asked by Reed 
Economics(Please respond, thank you)
The table below shows the market basket quantities and prices for the base year (year 1) Base year 1 Price in price Quantity base year yr 2 Product Pizza 15 $3 $3.75 tshirts 4 $10 $9 rent 1 $500 $550 In year 1 the CPI was? In year 2 the CPI was? I know
asked by Hannah 
Economics
what is the kyoto protocol?
asked by Steph 
Chemistry
A 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the
asked by Riley 
calculus
A document is to contain 80cm squared of print. The margins at the top & bottom are each 2cm wide and margins on each side are 3cm wide. What should be the dimensions (in cm) of print so that a minimum amount of paper is used?
asked by Khateeb 
CHEMISTRY
What is the electron configuration for the transition metal ion(s) in each of the following compounds? Na2[TaF7] Cant seem to figure this one out...
asked by Sarah 
geometry
Use the Pythagorean distance formula to calculate the distance between the following points on a graph: (7,3) (8,11)
asked by kim 
statistics
Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows. Person Dexterity Anxiety 1 1 10 2 1 8 3 2 4 4 4 –2
asked by Dawm 
Physics
Belinda needs to find the center of mass of a sculpture she has made so that it will hang in a gallery correctly. The sculpture is all in one plane and consists of various shaped uniform objects with masses and sizes as shown. The length of the rectangle
asked by Priyanka 
algebra 2
the height of a box is 6 inches. the length is three inches more than the width. find the width if the volume is 240 cubic inches
asked by amanda 
algebra 2
the area of a square is numerically 165 more than the perimeter. find the length of the side
asked by amanda 
Chemistry
What volume of a 3M KOH solution can be prepared by diluting 0.5L of a 5M KOH solution?
asked by Adriane 
precalculus
Convert from polar to rectangular r=3cos2theta
asked by Tati 
math
harun and kuna competed in a 200m race.harun ran at a speed of 5 m/s.kuna ran at a speed of 8 m/s.if they started at the same time, a.find the time kuna took to reach the finishing line. b.how far was kuna from harun when kuna reached the finishing line?
asked by Da S 
chemistry
A scientist measures the standard enthalpy change for the following reaction to be 53.4 kJ : Ca(OH)2(aq) + 2 HCl(aq) CaCl2(s) + 2 H2O(l) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of
asked by Austin 
Chemistry
Pure water boils at 100ºC (212ºF). When a substance is added to the water the boiling point increases due to what is referred to as the boiling point elevation. (a) What is the molecular mass of sucrose (C₁₂H₂₂O₁₁)? (b) If you add 100 g of
asked by Hannah 
writing
what is the correct punctuation for this sentence: It is cold here
asked by Anonymous 
chem
calculate the solubility of barium sulfate (Ksp=1.1x10^10) in a) water b) a 0.10 M barium chloride solution help is GREATLY appreciated
asked by brooke 
geometry
Find (5/8) of 1 kg, in grams.
asked by supastarrr 
math
LMN have vertices at L(0,4) M(5,2),and N (2,2). determine the equation for the perpendicular bisector that passes through MN
asked by jan 
CHEMISTRY
Hydrogen gas and iodine gas react via the equation, H2 + I2 2HI, and K=76 at 600K. If 0.05 mole of HI is placed in a flask at 600K, what are the equilibrium concentrations of HI, I2, H2? I am very lost at where to even start with this problem
asked by Kristen 
Physics
A skier starts from rest at the top of a hill that is inclined at 12.0° with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the
asked by smh 
Calculus and vectors
Explain how the vector C⃗(Going from the head of B⃗ to the head of A⃗) can be written in terms of vectors A⃗ and B⃗ Given the shape in this url: imgur dot com/5nT3V
asked by Melissa 
Acoustic and Auditory Physics
A resonant frequency is a frequency that resonates within a tube of some length. The first resonant frequency of the average ear canal is around 3,000 Hz. Look at the FletcherMunson diagram. Which of the following statements is correct? The intensity
asked by Jenna 
Chemistry
What volume of 0.500 M hydrochloric acid is required to exactly neutralize 40.00 mL 0.150 M NaOH?
asked by Arianna 
Ecomonics(Urgent,please respond)
The table below shows the market basket quantities and prices for the base year (year 1) Base year 1 Price in price Quantity base year yr 2 Product Pizza 15 $3 $3.75 tshirts 4 $10 $9 rent 1 $500 $550 In year 1 the CPI was? In year 2 the CPI was? I know
asked by Hannah 
algebra
FIND THE SLOP of line containing points(2,8) and (3,5)
asked by Anonymous 
chemistry
Write a balanced reaction for the formation of Fe2O3 (s)?????
asked by Kayla 
Chemistry
a. Exactly 4.000 mol of NH3 is burned in a constant volume (bomb) calorimeter immersed into 100.0kg of water. The temperature of water increases by 3.619 degrees C after the reaction. Calculate the heat released by the reaction. Neglect the heat capacity
asked by Wendy 
Chemistry
1.00 g of sodium is added to a large excess of water under conditions of constant pressure (1.00 atm) and constant temperature (25 °C ). The following reaction occurs: 2Na (s) +2H2O (l)> 2NaOH (aq) +H2(g) Delta H°rxn =369 kJ/mol Calculate the heat
asked by Riley 
physics
A student sets up two speakers spaced 2.5 meters apart, each playing the same tone of a single frequency. She stands at point P, at an equal distance from each speaker and hears the tone playing loudly. She walks towards point Q, directly opposite one
asked by elizabeth 
CHEMISTRY
You mix 40.0 g of ethanol (C2H5OH, molecular weight = 46.1 g/mol) and 60.0 g of water (molecular weight = 18.0 g/mol) The resulting solution has a density of 920 g/L. a)Calculate the molarity of ethanol in this solution? Answer : 0.06 kg of H2O This is
asked by Jen 
algebra
1. The formula V=lwh is used to find the volume of rectangular prisms. Which equation solves for w? a. w=Vlh b. w=Vlh c. w=lh/V D. w=V/lh 2. Mr. Marsupial invested $8,000, part at 6% interest and the reamainder at 8% interest. At the end of the first
asked by Yaya 
Math
Multiplying a vector by a scalar results in: a) a scalar b) a perpendicular vector c) a collinear vector c) a parallel scalar
asked by Jake 
Calculus and vectors
Please, help I don't understand vectors T.T 1. In the prism, assume all dimensions have different lengths, state the following: a) state 3 equal vectors to DC⃗ b) state 4 opposite vectors to BC⃗  Here is the prism
asked by Melissa 
Chemistry
The solubility of a substance is 12.0 g per 100.0 g of water at 60 C. How many grams of the substance can crystallize from a saturated solution that contains 200.0 g of water at 60 C if the solution is cooled to 20 C?
asked by Stephanie 
health
if you were going to leave your home and your kids put you to aged care facility how would you feel and how would you think and what would you miss the most
asked by sarah 
Religion
What can be a good picture of a modern situation of the ninth station of the cross when jesus falls the third time?
asked by Matilda 
Math(Please someone respond, very confused)
The original equation was 1.7e3 = (0.0015 x)^2 / (0.025 +1/2x)(0.025 + 1/2x) Square root of both sides is 0.0412 = (0.0015x) / (0.025 + 1/2x) Solve for x and when I put in 0.001 or 1.0e3 it says that it is incorrect, I don't know why??
asked by Hannah 
CHEM, please help!
What pH buffer solution is needed to give a Ni2+ concentration of 2.5 x 103M in equilibrium with solid nickel hydroxide Ni(OH)2? Ksp = 6.0 x 1016.
asked by Kate 
Math(Please help)
0.0412 = 0.0015  x / 0.025 + 1/2x Solve for x. 0.0412 = 0.015x / 0.525x I am not sure where to go from here since there are two x's.
asked by Hannah 
READING
In the book "The Face On the Milk Carton" where does Janie live? (I don't know where but I do know that it isn't in New Jersey) Please and Thank you.
asked by Jessica Kaplan 
Physics Please help!
In each of the following cases, the mass is 7.99 kg and the radius is 7.50 cm. (a) What is the moment of inertia (kg/m2 ) of a solid cylinder rotating about an axis parallel to the symmetry axis but passing through the edge of the cylinder? (b) What is the
asked by john 
Chemistry
In a 1.760 M aqueous solution of a monoprotic acid, 3.21% of the acid is ionized. What is the value of it's Ka? x=1.760M * 3.21/100  .0565M Ka expression is Ka= {[H+][A]} / [HA]
asked by Jamie 
Life orientation
How drug addiction is a human factor that may cause ill health,accidents crises or disaster
asked by Nokthula 
phi103
Mrs. Sue please help! I really need some help on these questions Please! I am having a very tough time. I have tried to answer to the best of my ability, but i am not understanding these. Can someone please help with this? Thank you. Truth tables can be
asked by Ashley 
Chem
The actual heat of formation of MgO is 601.8 kJ/mol. Convert this to kcal/mol and calculate your % error. And list two possible sources of procedural error to account for this percentage.
asked by Danny 
algebra 2
the printed matter on a 10 by 16 centimeter page of a book must cover 0 square centinmeters. if all margins are to be the sme width, how wide should they be?
asked by amanda 
Algebra
find the slope.If it is not defined state this..(0,1)(3,3)(5,6)(1,3)(3,6)
asked by sherry 
reading
SQR3 is a method used to: A. increase speed. B. improve comprehension. C. improve reading skills. D. both B & C.
asked by Anonymous 
Algebra
find the slope.If it is not defined state this..(0,1)(3,3)(5,6)(1,3)(3,6)
asked by sherry 
algebra
At what interest rate would a deposit of $45,000 grow to $110,682 in 30 years with continuous 38) compounding?
asked by Sarah 
algebra 2
a ladder is resting against a wall. the top of the ladder touches the wall at a height of 6 feet. find the length of the ladder if the lenght is 2 feet more than its distance from the wall.
asked by amanda 
Chemistry Equilibrium Constant
The initial pressures for I2 (g), H2(g), and HI(g) were Pi2 = 0.100 atm, Ph2 = 0.200 atm, and Phi = 0 atm, respectively. After the system came to equilibrium, the pressure of I2 (g) became very low, PI2 = 1.00 x 10^5 atm. Calculate the equilibrium
asked by Raskin 
Algebra
At a local park, there is a large circular fountain feature that is 50 feet across, surrounded by a path that is 8ft wide. A father and son plan to have a “friendly” race around the path. To be fair, the father agrees to run around the outside circle
asked by kim 
Algebra
At a local park, there is a large circular fountain feature that is 50 feet across, surrounded by a path that is 8ft wide. A father and son plan to have a “friendly” race around the path. To be fair, the father agrees to run around the outside circle
asked by kim 
american history
the articles of confederation called for wich of the folling
asked by Anonymous 
Algebra
Your kids have asked you to set up a cable fromtheir tree house to the ground so that they can slide down quickly when it’s time to head in for lunch. The tree house is 12 feet from the ground. You determine that in order to get a gentle enough slope
asked by kim 
algebra
I need help. Can someone help me please. Explain how you can determine from the graph of a system of two linear equations in two variables whether it is an inconsistent system of equations. Thank you
asked by don 
chemistry
What is the pH of a solution if 100.0 mL of the solution is 0.23 M with respect to acetic acid and contains 1.71 g of sodium acetate, NaCH3CO2?
asked by Sam 
algebra
Can someone help me figure this out please? when you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? thank you anyone
asked by don 
advace english
Look at the significance of chapter 5 to the novel as a whole. Focus on the relevance and effect of writer’s use of language to describe setting, character and what it shows about social and historical influences. the novel is frankenstein by mary
asked by pratima 
algebra
Explain why the addition method might be preformed over the substitution method for solving the system 2x – 3y = 10 5x + 2y = 6 What is the solution of this system?
asked by Algebra PLEASE HELP!! 
Physics
A 44.0kg woman stands at one end of a 148 kg raft that is 6 m long. The other end of the raft is 0.5 m from a pier. (a) The woman walks toward the pier until she gets to the other end of the raft and stops there. Now what is the distance between the raft
asked by Priyanka 
algebra
The point of intersection of the graphs of the equations of the system Ax – 4y = 9 4x + By = –1 is (–1, –3). Explain how to find the values of A and B, then find these values.
asked by Algebra PLEASE HELP!! 
Chemistry
For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) > NH4HS (s)
asked by Riley 
Composition and Communications 1
i need to write an essay explaining how purpose, tone, audience, and content impact academic writing, and i am having trouble coming up with a good topic sentence, what are some ideas that i can use?
asked by mrzmerced1 
physics
when a force (5*10^4) is applied on a spring then it get expand by 5*10^2.a small mass(0.01kg) is hanged at bottm end.after coming in equilibrium a force [f(t)=20cos(wt)] is applied at the top end for oscillation.what is the distance of small(0.01) from
asked by bhawani 
trig
Find the general solution for x if cos2x + sin3x = sinx
asked by Tiana 
physics
when a force (5*10^4) is applied on a spring then it get expand by 5*10^2.a small mass(0.01kg) is hanged at bottm end.after coming in equilibrium a force [f(t)=20cos(wt)] is applied at the top end for oscillation.what is the distance of small(0.01) from
asked by bhawani 
ScienceChemistry
In the following test for Sulfated Ash, ammonium carbonate solution was added. What is the purpose of adding ammonium carbonate solution? Heat a silica crucible to redness for 30 minutes, allow to cool in a desiccator and weigh. Place 1g of the substance
asked by anne 
humanities
for my homework my teacher has set me whats the meaning of a human honey pot and i cant find any good websites so i was wondering if you new any
asked by Alex 
calculus
find the integral of x^2 + 1 over sqrt x from 1 to 2
asked by Anonymous 
Chemistry
What is the function of Compressed Air in GCFID (i.e. Gas ChromatographyFlame Ionization Detector)?
asked by anne 
Algebra
I need to write an equation for when the slope is 5/3 and the yintercept is (0,3) I got Y = 5/3x +o Cn someone verify for me please also i don't know how to find the slope of x=1
asked by Amy 
chemistry
Balancing the equation: CuSCu + KFO2 + HBr > CuSO4 + KBr + HCu + FBr + H2O
asked by jill 
trig
a plane takes off at 10.00am from an airfield, and flies at 120km/h on a bearing of N35W. A second plane takes off at 10.05am from the same airfield, and flies on a bearing of S80E at a speed of 90km/h. How far apart are the planes at 10.25am?
asked by Anonymous 
Life orientation
Three checks and balanced that are in place in south africa that control and regulate media?
asked by Valentine 
English
Writeacher, I urgently need you to check these sentences. Thank you. 1) You forgot to mention the fact that Robinson keeps himself busy by writing (keeping) a diary using the paper, pen and ink he finds on the wrecked ship. 2) He realizes his gunpowder is
asked by Matthew 
Physics  Static Forces
Blocks 1 & 2 are connected by a string. Block 1 is on an incline & has a mass of 5.4kg. Block 2 is hanging from the string & has a mass of 2.1kg. The coefficient of friction is 0.22 between all surfaces. 1: What is the minimum angle "theta" can be while
asked by Josh 
English
I left out the following sentences. Thank you very much. 1) The sense of reward and punishment followed the Puritan ethics of the middle class. (but not: the rewards and punishments followed.....) 2) Other important "themes" are time and place, which are
asked by Matthew 
Financial Accounting
3. How is accounts receivable turnover calculated?
asked by Cindy 
physics
when a force (5*10^4) is applied on a spring then it get expand by 5*10^2.a small mass(0.01kg) is hanged at bottm end.after coming in equilibrium a force [f(t)=20cos(wt)] is applied at the top end for oscillation.what is the distance of small(0.01) from
asked by bhawani 
geometry
how many times the length of the diameter would divid into the length of the equator
asked by Anonymous 
Thermo
Calculate the standard cahnge in enthalpy for the combusation of coal/ Show the balnaced reaction. How does one get the balanced reaction of coal? Coal has many substances that make up its compsistion
asked by Scott 
calculus
The circumference of a sphere was measured to be 74 cm with a possible error of 0.5 cm. (a) Use differentials to estimate the maximum error in the calculated surface area. (Round your answer to the nearest integer.) cm2 What is the relative error? (Round
asked by William 
math
How small tennis balls do I need to make it even on a weighing scale if all I need is only 5 kilo
asked by sandra 
accounting
What is the ending balance in an account that opebs with $7000, earns 7.5% interest compound quarterly, and is held for 20 years.
asked by Yvonne 
math
The amount of water bucket holds,if b litres of water is added to the bucket already holding 4 litres of water.what is going to be the answer in algebraic expression
asked by Patricia 
geometry
could you answer the question? Baes are isosceles trapeziods with parallel sides that measure 15 cm. and 25 cm. the distance between the parallel sides is 12cm. and the length of each of the equal sides is 13cm. the height of the prism is 20 cm. what is
asked by lola 
applied physics
you are standing on a 100m tall buiding above a street and your friend is standing vertically below the building. When you drop a stone, your friend simultaneously throws the identical stone as yours at a speed of 50m/s in the same straight line. Calculate
asked by jose 
math
Da Ming walks from his school to his house at a speed of 5km/h.he takes 20 minutes to reach home.what is the distance between his school&his house? Convert the time from minutes to hour and correct to 2 decimal places
asked by Da S 
math
lisa began her journey from home at 1350 and reached her destination at 1415. A.how long did she take for the whole journey? B.if the total distance taken was 45 km,find her speed.
asked by Da S 
precalc!!!!!
Use long division : (a^3b^3)/ (ab)
asked by ALISON 
operating system
The proprietor serves an average of 800 students a day, with interarrival times following an exponential distribution. Most students check out with very few items, but there are some that do all their grocery shopping there, which results in service times
asked by rashmi 
chemistry
A scientist measures the standard enthalpy change for the following reaction to be 53.4 kJ : Ca(OH)2(aq) + 2 HCl(aq) CaCl2(s) + 2 H2O(l) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of
asked by Austin 
Maths
The question says : the gradient of a curve is give by dy/dx = x^2  6x. Find the set of values of x for which y is an increasing function of x. I didn't understand what they are asking me to do could you solve and explain?
asked by beavis 
Business Law
Can someone help me with my business law project? I have to profile (interview) six legal professions. One of the people I picked my aunt who is a doctor (internist) and i have to ask her 10 legal questions about her job. How her job is related to the law.
asked by chocolate 
Math help
I need to graph the line y=4x3 using the slope and y intercept form how do i do this
asked by Janine 
english
briefly summarizing the theory and discussing at least two of the “Seven Intelligences” that apply most closely to you, providing examples to illustrate your point.
asked by chris 
math
i have a few problems can you check? 1. which number is 1.92509 rounded to the nearest ten  thousandths? a 1.9251 b. 1.9250 c. 1.93000 d. 1.90000 i picked a. 1.9251 #6 which of the following is in order from least to greatest? f. 9, 5, 0, 2 g. 5,
asked by marko 
trig emaths
giving that cosx=4/5 and siny=12/13, find cos(x+y) when x is acute and y is obtuse angle
asked by edward damia 
math
In a 180 kilogram sample of ore, there was 3.2% of metal. How many kilograms of metal were in the sample?
asked by jocelyn 
Business Law
Can someone help me with my business law project? I have to profile (interview) six legal professions. One of the people I picked my aunt who is a doctor (internist) and i have to ask her 10 legal questions about her job. How her job is related to the law.
asked by chocolate 
English
Could you please check these sentences? Thank you very much, Writeacher. 1) Your paragraphs show a good knowledge of the literary contents. As to the grammar, you are still unsure in the use of tenses and prepositions. 2) As to cohesion, you failed to
asked by Matthew 
chemistry
how much heat does it take to raise the temperature of 0.10 kg of gold bt 25 C?
asked by Tawha 
chemistry
how much heat does it take to raise the temperature of 0.10 kg of gold bt 25 C?
asked by Tawha 
geometry
If 35% of an amount is 21, find the complete amount. Would it be 60?
asked by punk480 
orchestra
ean fortidd
asked by karissa 
precalc
find the equation of the circles described. tangent to 2x + 3y + 13 = 0 and 2x  3y  1 = 0 and contains (0,4)
asked by Kylie 
math
If tn = n2 + 1, n ≤ 1, show the first four terms of the pattern. so far i got 2 1 0 3. but it marked it wrong..and i don't know why
asked by penelope 
Chemistry
How do I figure out how to balance 1 mole of carbonic acid with 1 mole potassium hydroxide? And balance a chemical reaction of sodium bicarbionate with hydrochloride acid?
asked by Dd 
English
I urgently need to check this paragraph. I need to revise word choice, punctuation, sentence connectors and grammar. I really hope you can help me. 1) The 18th century novels represent the contemporary middleclass and its virtues and features; so the
asked by Matthew 
English
In the word ecologists, is eco the root morpheme or ology? Are the morphemes eco, log, y, ist, s or ec, ology, ist, s ? This is very confusing for me. Any explanation on how to find the root would be appreciated. It's easy to find roots on some words, but
asked by Matt 
algebra
f(x)=x+19
asked by coco 
math
suppose 6% of 8000 people polled regarding election expressed no opinions. how many people expressed no opinion? 0.06x8000=?
asked by jocelyn 
algebra college
multiply and simplify 3^23^6
asked by marie 
math
how do i find the net electric field strenght if I have 8 q's( in a squared shape)..i am really confused..thanks
asked by Rose 
Physics
A water bed has a dimension of 2m × 2m × 2m. The floor of the bed will tolerate an additional load of no more than 600N. Find the weight of the bed and determine whether it should be purchased.
asked by Loiso 
literature
Is Pride and Prejudice identified more with Romanticism or Realism? Even though it was written during the Romantic period, it seems more like Realism to me. Is this correct? Thanks!
asked by Lydia 
calculus
Suppose R is the rectangle 1
asked by Bryant 
Physics
A water bed has a dimension of 2m × 2m × 2m. The floor of the bed will tolerate an additional load of no more than 600N. Find the weight of the bed and determine whether it should be purchased.
asked by Loiso 
Life orientation
3 checks and balances that are in place south africa that control and regulate media.
asked by Nomsa 
Physics
A cell phone, when weighed in air has a weight of 5.5 newton. When completely immersed in water, however, it has a weight of 3.3 newton. Find the volume of the cell phone.
asked by Loiso 
Math
Consider a game where Ann and Bob play against each other in a dice game, Ann wins if her score is higher than Bob's, Bob wins if his score is higher or if the scores are the same. What is the probability of Ann winning? I calculated and got 1  summation
asked by mary 
Chemistry
The equlibrium constant K, for the reaction, H2 + CO2 H20 + CO, is 4.2 at 1650 degrees C. Initially, 0.80 mol H2 and 0.80 mol CO2 are injected into a 5.0L flask. Calculate the concentration of each species at equilibrium.
asked by Kristen 
Genetics
The difference between fitness of a given genotype and another genotype considered optimal is called the selection coefficient (s). What is the selection coefficient for a genotype (aa) that produces an average of 99 offspring when Aa individuals produce
asked by Anon 
Genetics
A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in HardyWeinberg equilibrium, what percentage of the individuals in this population is
asked by Anon 
Econ
Use diagrams of the Market for Loanable Funds and the Market for Foreign Currency to describe what would happen to the net capital outflow, the Canadian real exchange rate and net exports in each of the following scenarios:  Instead of using diagrams it
asked by Agent 
chemistry
Given 1.00L of a buffer containing 0.338 M CH3COOH and 0.093 M CH3COONa. Ka(acetic acid) = 1.8 x 105. Calculate the pH after the addition of 0.005 moles NaOH.
asked by cathy 
math
Consider the 2008 Democratic / Republican primaries and discuss how the nominating process might have proceeded through the campaign if the concept of "approval voting" had been used to deceide primary winners?
asked by trish 
chemistry
A buffer solution was prepared by mixing 442 mL of 0.181 M NaOCl and 139 mL of 0.421 M HOCl. Calculate the pH of the solution given that Ka (HOCl) is 3.2 x 108.
asked by cathy 
calculus
find a vector equation of the line, which passes through the point (1,3,11) and is perpendicular to the yzplane
asked by kally 
English
Writeacher, I urgently need you to revise the introductory part of Chapter 10 (Dr Jekyll and Mrs Hyde). Can you check tenses,please? 1) In Chapter ten Dr Jekyll comes to the realization of the primitive duality of man. He admits that man is not truly one
asked by Matthew 
Calculus
2. An object is moving along the parabola y = 3x^2. a) When it passes through the point (2, 12), its “horizontal” velocity is dx/dt= 3. What dt is its “vertical” velocity at that instant? b)If it travels in such away that dx/dt=3 for all t,then
asked by jessica 
Physics
A 67.0 kg person, standing on a diving board, dives straight down into the water. Just before striking the water, her speed is 5.50 m/s. At a time of 1.75 s after she enters the water, her speed is reduced to 1.10 m/s. What is the net average force
asked by Foxxi 
History  Italy
What is the history of the Italian sports of soccer and football. Is Italian football the same as American soccer? If so, what is Italian soccer? Thanks for your help.
asked by Jade 
Math
Rewrite equation to solve for t: I=1.51.5(10^(0.03t))
asked by Reina 
Math
I am confuse how do you divided 60 into4,356 please help!
asked by Kayla 
calculus
Find an equation(s) of the circle(s) described. Tangent to x + y = 0 and x  y  6 = 0; center on 3x  y + 3 = 0. How do you solve this?
asked by hfdsgds 
History
Name 5 black or irish people who contirbuted to society in the 1950s
asked by lil 
Chemistry
The number of moles of hydrogen gas present in a 1500 mL container at 298 K and 2.0 atm pressure is?
asked by Gladys 
vectors components
plz answer my question a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10 km/h in still water and heads out from one bank. a marina is directly across the river, on the opposite bank. if the motorboat heads directly toward the marina,
asked by tarkan 
adding fractions
what does one half plus one third equal?
asked by dylan 
Math(Please check)
2.5 X 10^(3) = (.28)(.38) / x^2 Solve for x. 2.5 X 10^(3) = 0.1064 / x^2 2.5 X 10^(3) X 0.1064 = 266 sqrt 266 = 16.3 Did I do this correctly?? Thank you for your help.
asked by Hannah 
Chem Lab Math!
A liquid solution of formaldehyde is 37.0% pure. This solution has a specific gravity of 1.037. The molecular weight of formaldehyde is 30.0. to 1.00 ml of this impure stock solution is added quantity sufficient to take the total volume to 500ml. If 1.00
asked by Morgan M 
chemistry
The Equilibrium Constant Kp for the following reaction is 4atm^2 at 300K. AB(s) > A(g) + B(g) What is the equilibrium pressure of A(g) and B(g) above AB(s) at 300K? What is Kc at 300K?
asked by Raskin 
physics
A marble cylinder that has a diameter of 42 cm and stands 1.25 m tall rests on a flat tile deck. What is the pressure exerted on the deck by the cylinder?
asked by john 
HVAC
Why must all valves be open when an evacuation is performed?
asked by Tony 
college algebra
a rectangular box has a volume of V(x)=x^3+13x^2+50x+56 cubic inches. The height of the box is x+7 inches. The width of the box is x+4 inches. Find the length of the box in terms of x.
asked by Missy 
Algebra 2
Okay so I need help with basically how to find the domain, range, and how to solve if it says Find the value of f(3). Let the f function be defined by f(x) = the square root of x + 1 for 1 is less than or equal to x less than or equal to 3. And 4  x for
asked by Kendra 
physics
When catching a baseball, a catcher's glove moves by 11 cm along the line of motion of the ball. If the baseball exerts a force of 407 N on the glove, how much work is done by the ball?
asked by ryan 
Physics
A cube of ice is taken from the freezer at 8.5 degrees celsius and placed in a 100 gram aluminum calorimeter filled with 300 grams of water at room temperature of 20 degrees celsius. the final situation is observed to be all water at 17 degrees celsius.
asked by Donald 
Chemistry
Calculate the pH of 100.0 mL ofa buffer that is 0.070 M NH4CL and 0.130 M NH3 before and after the addition of 1.00 ml of 5.55 M HNO3. Before = ? After = ? I know the base is NH3 and the acid is NH4Cl!
asked by Jamie 
Math(Please respond, thank you)
The original equation was 1.7e3 = (0.0015 x)^2 / (0.025 +1/2x)(0.025 + 1/2x) Square root of both sides is 0.0412 = (0.0015x) / (0.025 + 1/2x) Solve for x and when I put in 0.001 or 1.0e3 it says that it is incorrect, I don't know why??
asked by Hannah 
Math 2
Find the cartesian coordinates If (x,y) = (3,8) then (r,theta) = ? I already got r it is sqrt73 but i cant seem to get theta right. I got 110.556 but its wrong...please tell me how to do it thank you!!
asked by UCI 
world history
what is another catchy name for the storming of the Bastille? please help me thank you
asked by joseph 
algebra
1. Rodney can pick 2 rows of string beans in 1 hour and 24 minutes. At this rate, how long will it take him to pick 7 rows of beans? 2. The formula for finding the perimeter of a rectangle is P=21+2w. Which equation solves for w in terms of l and P?
asked by Yaya 
Finance
P173 (AvailableforSale Investments) Cardinal Paz Corp. carries an account in its general ledger called Investments, which contained debits for investment purchases, and no credits, with the following descriptions. Feb. 1, 2010 Sharapova Company common
asked by Yo 
Physical Science
I balanced Li(s) + Cl2(g)= LiCl(s) to 2Li(s) + Cl2(g)= 2LiCl(s) Now the question is, if you have 39.8g Li, how many moles of LiCl would you have? I am stuck on this part. Any help would be appreciated.
asked by mel 
logic
A person who is shown his or her argument commits a fallacy should run screaming from the room. argue louder. add another fallacy. revise the argument.
asked by rosa 
algebra
combine like terms 11/14a1/15b+1/14a11/15b
asked by marie 
Biology
The problems of survival of animals on land are very different from those of survivial of animals in an aquatic environment. Describe four problems associated with animal survival in terrestrial environments but not in aquatic environments. For each
asked by Neil 
Algebra1
the area of a wall is 15 square feet. if i can paint 180 sq inches per hour how many hour will it take me to paint the wall.
asked by Anonymous 
Math
simplify using the exponent law. express your answer using positive exponents only. (x^2)^3(2x^3)^3/(4x)^2
asked by Hanu 
Chemistry
Which one is the LR? Ag or S? 2Ag + S → Ag2S = 216 g Ag + 32 g S
asked by Shea 
Earth/Space Science
Why are icebergs in shipping lanes so hazardous?
asked by Astrid 
math
1. A.) Find the future value on $6,000 in three years if the interest is compounded semiannually at 12%. (5 points)
asked by Anonymous 
Chemistry
At 25 degrees Celsius, the base ionization constant for NH3 is 1.8 x ^5. Determine the percentage ionization of a M solution of ammonia at 25 degree Celsius.
asked by Caitlin 
Chemistry
You found an unknown metal sample shaped as a cube with each side measuring 2.00 cm. The cube's mass is 48.0 . Your colleague examined the mystery cube with Xray diffraction and told you that it contains just one element arranged in a bodycenteredcubic
asked by Riley 
Math
How many faces vertices and edges does a cone have
asked by Karen 
English
Ms. Sue, as Writeacher is not there, I'd like you to check if everything is OK in this rephrase I need to prepare for tomorrow. (Use of tenses) 1) In Chapter ten Dr Jekyll comes to the realization of the primitive duality of man. He admits that man is not
asked by Matthew 
Lif oritation
Wht are the check and balance that control the media?
asked by Sibongile 
English
Fill in the blank. English is an important language for international __________.
asked by noorie 
English
Ms Sue, here is the second and last part, concerning Stevenson's biography. Thank you very much for helping me. 1) Robert Louis Stevenson was born in Edinburgh in 1850. He spent most of his childhood in bed because of his poor health and grew up under the
asked by Matthew 
Human Resources
What types of issues might indicate a need for training? From what sources would these issues be identified? If you were a training manager, how would you prioritize training needs from these sources? My position I selected was Healthcare Administration.
asked by Kayla 
Economics
If one kilogram of flour costs $2 in Canada, and 100 shillings in Kenya, what would Purchasing Power Parity predict the Kenyan shilling to be worth in Canadian dollars
asked by Agent 
math
A customer is buying a $100 drill and two $15 drill bit sets. The customer uses a gift card worth $50 to pay for a portion of their bill. How much cash will the customer pay (before taxes)?
asked by Anonymous 
Math
log(base5)x+log(base25)x+log(base125)x=33 solve for x
asked by Reina 
PHI103
I really need some help on these questions Please! I am having a very tough time. I have tried to answer to the best of my ability, but i am not understanding these. Can someone please help with this? Thank you. Truth tables can be used to examine
asked by Ashley 
Ms.Sue
MsSue can you give me a general analysis of what Kalamazoo Poverty Reduction Initiative is about and how they're beneficial. I've read the site and not comprehending it.
asked by help 
Calculus II
A 24 foot ladder is leaning against a building. Let x be the distance between the bottom of the ladder abd the building and let theta be the angle between the ladder and the ground. Suppose the bottom of the ladder is sliding away from the wall at a rate
asked by Lynn 
psychology
What dictates the design (experimental versus quasiexperimental) and the type of manipulation used in a research study?
asked by Betty 
chemistry
v=555mL at 1.00 atm. what is the volume at 689 torr?
asked by Anonymous 
CHEMISTRY
The equilibrium constant KP for the following reaction is 4 atm^2 at 300 K. AB(s) > A(g) + B(g) What is the equilibrium pressure of A(g) and B(g) above AB(s) at 300 K? What is KC at 300K?
asked by Wendy 
Math
Rewrite equation to solve for t: I=1.51.5(10^(0.03t))
asked by Reina 
chemistry
A saturated solution is prepared by dissolving 3.2 g of a salt in 9.10 g of water to yield a saturated solution. What is the solubility of the salt (in g salt/100g of H2O)?
asked by Riley 
Chemistry
For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) > NH4HS (s)
asked by Riley 
business law
1. Meyer, after seeing a sign on Chosnyka's land reading "FOR SALE 95 ACRES" and running a title search, sent Chosnyka an offer to buy the land as described by its legal description. The offer required acceptance by returning a singed copy within 10 days.
asked by nat 
algebra 2
a triangluar garden has an area of 189 square feet. its height os 3 feet more than ots base. find the measure of the base.
asked by amanda 
Chemistry colloidExamples...
give me 15 examples for colloid from the drinks that we use
asked by tinky 
english
the passage makes it clear that aunt georgiana??
asked by selena 
Chemistry
The equilibrium constant Kc for the following reaction is equal to 0.20 at 250°C. Calculate the equilibrium constant Kp for the reverse reaction at the same temperature. COCl2 (g) = CO (g) + Cl2 (g) My Answer: To find the reverse reaction of Kc, it should
asked by Raskin