Questions Asked on
July 25, 2011

General Chemistry
So I've been working on this online homework problem and got it wrong 8 times. I need help. Here's the question: 1,2diaminoethane, H2NCH2CH2NH2, is used extensively in the synthesis of compounds containing transitionmetal complexes in water. If pK_b1
asked by Dre 
math
a catering company has 15 customers orders during its first month. for each month afterward the company has double the number of orders of the previous month. how many orders in total did the company fill in its first year?
asked by kennisha 
Math
From the top of a 50m high bridge, two boats are seen at anchor. One boat is S 50degrees W and has an angle of depression of 38 degrees. The other boat is S 60degrees E and has a 35 degree angle of depression. How far apart are the boats?
asked by Kalia 
math
the maximun height of a ferris wheel is 35m. the wheel takes 2 mins to make one revolution. passengers board the ferris wheel 2m above the ground at the bottom of the rotation. a. write an equation to model this b. how high is the passengers after 45s c.
asked by kristen 
physics
if the brakes of an automobile are applied from 70km/h to 35km/h, how many meters does the car travel during this deceleration?
asked by ruel 
early childhood
Whats two resources designed to assist teachers in constructively dealing with childrens challenging behaviors like biting, hitting, aggressive,etc?
asked by mariah 
Math
Paul drove from his house to work at an average speed of 40 miles per hour. The drive took him 15 minutes. If the drive home took him 20 minutes and he used the same route in reverse, what was his average speed going home?
asked by Lilia 
Biology
Write true or false: 1. A root hair is a small extension of an epidermal or outermost cell layer of a dicot root 2. Layers of parenchyma cells make up the cortex of a dicot root and the central pith of a monocot root. 3. Outside the endodermis is a tissue
asked by Nandini 
english.
Can you give me some examples of figurative language in the book Dairy Queen by Catherine Murdock. And also can you list the page numbers.
asked by Jenna. 
math
A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cutout square so that
asked by Jeffrey 
chemistry
If onefourth cup of vinegar contains 0.049 mole of HC2H3O2, how many grams of baking soda will react with this amount of acetic acid? What would be the percent by weight of HC2H3O2 in this onefourth cup of vinegar solution? (assume density of vinegar is
asked by michael smith 
Finance
Nancy Bellow promised her son she would pay him $600 a quarterly for four years.If Nancy can invest her money in a 6% ordinary annuity, how much would she need to invest today
asked by Dell 
logic
Aron: The two double A batteries in my CD player are dead, so the CD player doesn’t work. My television remote control, which also uses two double A batteries, works fine. So if I move the two batteries from my television remote control to my CD player,
asked by Anonymous 
calculus
this is a optimization problem A construction company has been offered a contract for $7.8 million to construct and operate a trucking route for five years to transport ore from a mine site to a smelter. The smelter is located on a major highway, and the
asked by robert 
math
A balloon rises at a rate of 3 meters per second from a point on the ground 30 meters from an observer. Find the rate of change of the angle of elevation (in radians per second or rad/sec) of the balloon from the observer when the balloon is 30 meters
asked by Jeffrey 
Math
Trigonometry Problem: The good ship Bravery is 30 km due west of the good ship Courageous. The Bravery sets out on a bearing of 030° at a speed of 20km/hr. The Courageous sets out on a bearing of 345° at a speed of 25km/hr. Will the ships collide?
asked by Kalia 
algebra
85 factoral to the nearest tenth
asked by skip 
statistics
The average marks of 30 students in mathematics is 69. If the class leader’s mark is included then the average becomes 70. Find the class leader’s mark.
asked by Sharon 
math
Write MCMLXXVII in HinduArabic?
asked by Erica Anne C. Arellano 
economics
1. Pick a business that you are familiar with and list three (3) fixed and (3) variable inputs associated with that business. 2. What are some things that you think that business could do to reduce their costs? Why?
asked by Rachael 
English
Can you please check these sentences on phrasal verbs? Thank you in advance. 1) Can I have two chops of lamb (or lamb chops?) and a roast chicken (or a chicken roast?)? 2)Our teacher will go over our mistakes during our afternoon’s revision course.
asked by Henry2 
college algebra
how long would it take $3,100 to grow to $8,800 if the annual rate is 3.5% and interest is compounded monthly? please help
asked by Ash 
Basic Statistics
A population of 200 voters contains 52 Republicans, 128 Democrats, and 20 independents and members of other parties. A simple random sample of 20 voters will be drawn from this population. The expected number of Republicans in the sample is ______ ? The
asked by mike 
science
Question: If you have an electric motor on a bench and hook it to the power the shaft turns. If you put the shaft in a vise the casing of the motor will turn. Now:...put this motor in free space no gravity and attach a battery for power..when the power is
asked by Tiffany 
Math
The difference between two positive number is 72 and one of them is divided by the other, the quotient is 4.Find those numbers. Option: a) 22&94 b) 24&96 c) 20&92 d) 30&102
asked by Jay 
Algrebra
Please advise on the following: From 1993 to 2003 the cumulative number N of AIDS cases in thousands can be approximated by, where corresponds to the year 1993. N = 2 x2 + 76x + 430, where x = 0 corresponds to. 1) Show how well the equation approximates
asked by Raj 
physics
A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?
asked by Shivam 
bio
Find a media piece—article, video, presentation, song, or other—related to the scientific method, creating hypotheses, or designing experiments. Include the link or reference citation for the piece and describe how it helped you better understand how
asked by Anonymous 
college algebra
find all vertical and horizontal asymptoles f(x)=4x/x^+1
asked by Ash 
math
A right circular cylinder is to be designed to hold 750 cm3 of processed milk, and to use a minimal amount of material in its construction. Find the dimensions for the container.
asked by Jeffrey 
math
Upon examining the contents of 38 backpacks, it was found that 23 contained a black pen, 27 contained a blue pen, and 21 contained a pencil, 15 contained both a black pen and a blue pen, 12 contained both a black pen and a pencil, 18 contained both a blue
asked by tamika 
physics
Consider two current carrying wires shown below. The current in the wire 1 is 4.5 A in the positive x direction. Find the magnitude and direction of the current in wire 2 if the net magnetic field at point A is to be 7.5 μT in the positive z direction
asked by Chloe 
Geometry
Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove: angles ABC and RPQ are congruent by completing the paragraph proof. AB=RP=13, BC=(?)=53, and CA=QR=26. So segment AB is congruent to (?), segments BC and PQ are congruent and segment CA is
asked by Wendell 
Chem
How much heat is liberated at constant pressure if .928 g of Fe reacts with 26.2 mL of .238 M HCl? Delta H = 87.9 kJ
asked by Anonymous 
physics
suppose you stand on a bathroom scale and get a reading of 700N. in principle, would the scale read more, less, or the same if the earth did not rotate?
asked by Anonymous 
physics
A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?
asked by Shivam 
algebra
factor the expression a^26ab+9b^2 into a product of binomials
asked by ROCKY 
Algebra
Andrew factored the expression 28x^342x^2+35x as 7x(4x^2+6x5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x5) , she got 28x^3+42x^235x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew
asked by Natalie 
PrCal/Trig
1)if the graph of f(x)=cotx is transformed by a horizontal shrink of 1/4 and a horizontal shift left pi, the result is the graph of: a) g(x)= cot[1/4(xpi)] b) g(x)=cot[1/4(x+pi)] c) g(x)=cot[4(xpi)] d) g(x)=cot[4(x+pi)] e) g(x)=cot[4x+pi] please include
asked by Ashley 
Math
what does it mean to describe the end behavior of f in a graph?
asked by Ashley 
math
the leaning tower of pisa is 55.9m tall and leans 5.5 deg from the vertical. if its shadow is 90.0m long, what is the distance from the top pf the tower to the edge of the shadow? assume that the ground is level. please help in details
asked by amy 
algebra
solve. 0.7x+4
asked by Tony 
math
solve by the elimination method: 9x9y=18 7y3x=8 please solve step by step thank you for your help
asked by Richard 
English
Please let me know if this is correct? Broad SubjectPhonebook Character Limited Topic for Thesis Statement Oliver Tolivr Main Idea Wealthy Buisness Man Three Step Format #2 AppearanceSloppily dressed #3 SurroundingsState of the art mansion #4
asked by lizzie 
Organic Chemistry
Draw and describe the three overall redox reactions than occur in the conversion of 2,6dimethylnitrobenzene to 2,6dimethylaniline using stannous chloride. (Not the mechanisms). What are the key structures in these reactions, and what are their oxidation
asked by Tony 
intermediate icd 9 cm coding
What are the codes for Intrauterine pregnancy, spontaneous delivery, single live born?
asked by rachel 
algebra
Find the.domain of g(h)=10/32x
asked by Hunny5 
math
what is the density in kg/m3 1500 and 100.65 of nh3
asked by marh ivan 
maths
24 = 2x / 4y
asked by a 
math
3x²+8x=35
asked by need help 
Math
Anyone help me?? :) How to solve: 5x2 = (19/2x1) and 2x2 + 45/2x  18 = 0 With full solutions? Thank you :)
asked by Karen 
maths
the mass of a boy is 36.1kg when rounded off to 1 decimal place. If his mass is less than 36.1kg, what is his possible mass?
asked by Joel 
chemistry
why do you use Na2Co3 extract solution tor the analysis of anions
asked by saiful 
Psychology
Avis put off writing her term paper until three days before it was due. "It's not that big of a deal. I can whip it out in a couple of hours," she thought. As it turned out, this was not the case. She averaged two hours a night sleep as she struggled to
asked by Nicci 
Trig
Find [4(cos115+isin115)]^6
asked by Jack 
English/Marketing
Hi I wrote a paper for school and turn it in said it is 78% plagiarized I am upset because I did not use any of the sources they listed. I am stuck rewording my paper since I thought I did a good job on it. Are there any websites available to help me with
asked by Mandy 
Algebra
What is 3y^227? Explain please.
asked by Maddie 
Geography
conduct research to examine the sphere of influence of an organisation that renders a service in a community .eg.clinic,hospital,a local high school
asked by sydney 
math
a paintball is hot at a wheel that has a radius of 40 cm. it hits the very bottom of the wheel next to the road while the car is stopped at the red light. as the light turns green, the wheel rolls, and so does the paint. if it takes 3 seconds for the wheel
asked by .. 
math
a spaceship leaves the alien mothership and begins descending to earth. it descends 64m during the first second and 7m less during each second afterward. if the aliens invade after 10s, how far did the ship descend?
asked by amy 
college algebra
solve x^2e^x+9x^ex=0
asked by Ash 
english
using atleast five different pronouns, adverbs, and adjectives, write several sentences describing a recent interaction with a friend of a "ritual" you celebrate.
asked by monique 
chemistry
zinc displaces gold in seawater present int he form of gold (III) hydroxide. What mass of gold can be recovered if 20 moles of zinc are available?
asked by luz 
Chemistry
What volume of liquid water is produced from the combustion of 10.00 L of octane, C8H18? (density of octane=0.692 g/mL
asked by Kelly 
math
solve by the elimination method x+6y=12 x+7y=1
asked by Margie 
intermediate algebra
factor completely. Remember to look first for a common factor. If a polynomial is prime, state this. 4t^2+64 (4t^264 =((2t)^28^2) (a^2b^2)=(a+b)(ab)
asked by Shay 
macroeconimics
A bank has $120 million in total assets, which are composed of reserves, loans, and securities. It’s only liabilities are $120 million in transactions deposits. The bank exactly satisfies its reserve requirement and its total reserves equal $6 million.
asked by Anonymous 
Math
Andrew factored the expression 28x^342x^2+35x as 7x(4x^2+6x5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x5) , she got 28x^3+42x^235x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew
asked by Michael 
algebra
if an angle is three times is complement determine its measure
asked by annsa 
math
Evaluate:24(12)9/3. Find the answer and the solution.
asked by Erica Anne C. Arellano 
algebra
factor out the greatest common factor from the expression. 18x^714x^2
asked by ROCKY 
Statistics
A loaded coin is tossed 5 times, find the probability distribution for the number of heads, if heads are thrice likely to occur than tails. Let x be the number of heads that will turn up. Compute the probability associated to each value of X using the
asked by Sapphire 
About work
Hello am new at this work at home but i never find any good site i can work with pls help am from nigeria send me link of good work at home that can suit me nothing is small to earn. thanks
asked by Adewale 
statistics in psychology
11. Make up a scatter diagram with 10 dots for each of the following situations: (a) perfect positive linear correlation, (b) large but not perfect positive linear correlation, (c) small positive linear correlation, (d) large but not perfect negative
asked by desiree 
math
driving at 43 mpH, one covers 17 miles in how many seconds?
asked by Anonymous 
chemistry
Make a buffer solution with the following specification pH=5.5 Volume=2L total concentration=1M ... a) Name the components?... b) How many grams of each component would you use to make 2L of solution
asked by Anonymous 
Sci 275
Write a 250 to 350 word response to the following: · If you were an environmental researcher and were given funding to assist with one environmental issue, which of the following topics would you choose to spend your funds on? (I encourage you to use the
asked by Katheryn Pe 
Chemistry Lab
if i get 4 % of yield in the experiment of chemical reactions of copper and percent yield. Is there a possibility the experiment wa success? ~in my opinion it was success because ou theoritical yield is below 100 % ~i just need some opinion.
asked by Yuni 
Calculus
Decide whether to integrate with respect to x or y. Find the area of the region. y=e^2x y=e^6x x=1 I have no idea what to do
asked by Sam 
English
I left out the following sentences. By the way, thank you very much for helping me with the use of containers. 1)I’m staying over at Sheila’s tonight. The factory has shut down, and 2,000 people have lost their jobs. 2) My father is taking these
asked by Henry2 
vetrianarian
Which of the following theories asserts that all animal activity is learned, rather than genetically programmed?
asked by nay 
college algebra
the population of a certain geographic region is approximately 105 million and grows continuously at a relative growth rate of 1.53%. what will the population be in 5 years?
asked by Ash 
math
suppose you wanted to place 1,000,000 pennies in large coin banks. if you put 50,000 pennies in each bank, in which bank would you find the 678,230th penny?
asked by anabelle 
4th grade math
suppose a bead maker wants to separate 10,000,000 beads into boxes. She will put 100,000 beads into each box. Into which box would she put the 4,358,216th bead?
asked by lily 
math
a paintball is hot at a wheel that has a radius of 40 cm. it hits the very bottom of the wheel next to the road while the car is stopped at the red light. as the light turns green, the wheel rolls, and so does the paint. if it takes 3 seconds for the wheel
asked by ... 
math
is one half greater than three fourths
asked by mariel 
chemistry
assume that 0.50 L of carbon dioxide is required for a loaf of bread. what mass of glucose must be broken down by yeast to produce this volume of carbon dioxide? (density of carbon dioxide at baking temp. is 1.25 g/L.
asked by jim 
Pre cal
)a function f is defined as f(x) = 3*2^x describe the end behavior of f, please describe in detail how you got the answer and explain your abbreviations.
asked by Ashley 
Calculus
Given f'(x)=7cosx–11sinx and f(0)=1, find f(x)= ____?
asked by Brit 
intermediate algebra
factor the following expression completely: 70w^3125w^2+30w
asked by Shay 
math
thinking/inquiry/problem solving: a formula for the sum of the first n terms of an arithmethic series is Sn=n^2 + 4n. determin e the first four terms of the series.
asked by llwelyn 
Health
I am trying to understanding what is required " Identify one trend in global health and discuss how this trend may affect public health in your community." Am I right by thinking that this like how prevention of hiv by cdc can affect local communities. I
asked by Nancy 
PSY 285
how can social cognition may both positively and negatively affect one's attitudes and behaviors?
asked by Ro 
Programming Concepts
how do you Create a Web page that displays all numbers from 20 to 1 and indicates whether the number is prime in it displays?
asked by Janice 
Math
Let cis Θ = cos Θ + i sin Θ. Let z1 = 3 cis 25 and let z2 = 4 cis 115 Find z2^6
asked by Peter 
lenasia secondary school
reseach project chemical system: phosphates what is a super phosphate?
asked by bertha 
scientist
What is the law which states that volume and temperature are directly related?
asked by Erica Anne C. Arellano 
Pre Cal
Which of the following represents the graph of y=f(x) first shifted down 1 and reflected in the xaxis? a) y=f(x)1 b)y=(f(x)1) C)y=f(x)1 d) y=abs(f(x1))
asked by Ashley 
Pre Cal
a Function f is defined as f(x)=3*2^x a)is f increasing or decreasing? b)write equation for the horizontal asymptote c)describe the end behavior of f
asked by Ashley 
Pre Cal
If the graph of f(x)=cotx is transformed by a horizontal shrink of 1/4 and a horizontal shift left pi, the result is what?
asked by Ashley 
algebra
use the "difference of squares" rule to factor the following expression. x^281
asked by ROCKY 
sciencs
what is denser, 1 grams of gold or 1 kilograms of copper? why?
asked by chloe 
Occ
(x^2 +4)y = 2x
asked by peter 
chemistry
can you give me examples of pictures just name it, ummm.. CHEMISTRY IN DAILY LIVING , TECHNOLOGY AND SOCIETY
asked by Anonymous 
chemistry
A level teaspoon may contain 4.0 grams of NaHCO3. How many moles does this represent?
asked by michael smith 
PreCalc
Vector v is (4√3,√3). Find the angle between v and i.
asked by John 
chemistry
Make a buffer solution with the following specification pH=5.5 Volume=2L total concentration=1M ... a) Name the components?... b) How many grams of each component would you use to make 2L of solution
asked by Anonymous 
physics
A body of specific gravity 3.0 is immersed in water. What is the minimum force required to pull it out at velocity 2
asked by divya 
english
Identify the noun clause in the following sentence: What they should do is hire a tutor who can help them with their math skills.
asked by Eric 
algebra
factor out the greatest common factor from the expression 18x^5+48x^230x
asked by ROCKY 
PreCalc
Let cis Θ = cos Θ + i sin Θ. Let z1 = 3 cis 25 and let z2 = 4 cis 115 Find z2^6
asked by Peter 
math
Use the “difference of squares” rule to factor the following expression 494y^2 Thanks :)
asked by Mary Anna 
Medical Transcription
1. This is an 18monthold boy who was healthy until about 8 days ago when his mother noted reddened blotches on his neck and trunk particularly his upper back.
asked by Sarah Stewart 
Math
If f(x)=5x+2 and g(x)=x^2+3, then what is f(g(x))?
asked by Kate 
chemistry
why do you use Na2Co3 extract of anions
asked by saiful 
PreCalc
Find [4(cos115+isin115)]^6
asked by Ben 
Pre Cal
Which of the following represents the graph of y=f(x) first shifted down 1 and reflected in the xaxis? a) y=f(x)1 b)y=(f(x)1) C)y=f(x)1 d) y=abs(f(x1))
asked by Ashley 
Pre Cal
a Function f is defined as f(x)=3*2^x a)is f increasing or decreasing? b)write equation for the horizontal asymptote c)describe the end behavior of
asked by Ashley 
Pre Cal
If the graph of f(x)=cotx is transformed by a horizontal shrink of 1/4 and a horizontal shift left pi, the result has what equation?
asked by Ashley 
math
Use the “difference of squares” rule to factor the following expression 494y^2 my answer is going to be (72y)(72y) I wasn't sure if it could of been (72y)(7+2y)
asked by Natalie 
Financial management
Answers five questions involving concepts of time value of money.
asked by chichi 
CGD 218
Do you think TV or Film is more effective for marketing?
asked by meshelle 
Chemistry
an electron has an uncertainty in its position of 552 pm. what is the uncertainty in its velocity?
asked by Katie 
statistics
Assuming that the correlation between IQ scores and GPA scores is +.87, explain what this means.
asked by redd 
college algebra
e^31x+22=0
asked by Ash 
Pre Cal
what does it mean when it says describe the end behavior of f and whats that for f(x)=(x^2+x+3)/(x1) and f(x)= 3*2^x, please explain everything, and if you use > tell me what that means, cuz i have no clue
asked by Ashley