Monday
September 22, 2014

# Posts by bob

Total # Posts: 2,401

geometry
What is the most precise name for quadrilateral ABCD with vertices A(–3, 2), B(–1, 4), C(4, 4), and D(2, 2)? 1. parallelogram 2. rhombus 3. quadrilateral 4. rectangle
January 11, 2013

chem
What volume of 0.250 M H2SO4 is required to titrate a solution containing 0.200 g of KOH to its endpoint?
January 11, 2013

chemistry
Calculate the density of M&M’s given the following data: Mass of 250.0 mL beaker = 197.816 g Mass of beaker and 20 M&M’s = 342.816 g Volume of water in graduated cylinder = 8.0 mL Volume of water in graduated cylinder and 10 M&M’s = 18.5 mL (Points : 3)
January 10, 2013

chem
A 14.3 L sample of gas at 23.45°C and a pressure of 123.45 kPa is heated until its temperature reaches 43.20°C and its volume is 16.72 L. What is the pressure of the sample of gas
January 10, 2013

chemistry
A student is asked to prepare 250.0 mL of 3.5 M copper (II) sulfate from solid copper (II) sulfate pentahydrate. Describe how this solution should be made in the chemistry laboratory.
January 10, 2013

Chemistry
solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. how many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water? 2Na + 2H2O ------> 2NaOH + H2
January 10, 2013

math
12 nickels
January 9, 2013

Math
January 9, 2013

Math
Before 1986, a gold bullion in the Federal Reserve Bank was rectangular and had a volume of approximately 727.7 cm3. The density of gold is 19.3 g/cm3. A pound is approximately 454 g. Find the weight of one gold bullion to the nearest tenth of a pound.
January 9, 2013

math
1.1232 players 2. There are 29 teams because 438\15 =29.2 so there will be a remainder of 2 people. 3. There are 16 students on each team because 544/34 =16. 4. 96 people are on teams (P.S. /=division)
January 9, 2013

math
Which of the following values is in the solution set of the inequality -8-7x>-6 a) 2 b) -2 c) -3 d) -1
January 8, 2013

chemistry
The temperature of a dilute 0.847 M solution of NaBr was increased from 25 degrees Celcius to 40 degrees Celcius. What effect did this temperature change have on the molarity of the NaBr solution?
January 3, 2013

ap chem
The diatomic molecule OH exists in the gas phase. The bond lengthand bond energy have been measured to be 97.06 pm and 424.7 kJ/mol.Knowing that only the 2p orbitals of will interact significantlywith mol, respectively. Assume that the OH molecule is analogous tothe HF ...
January 2, 2013

ap chem
Show how a hydrogen 1s atomic orbital and a fluorine 2p atomic orbital overlap to form bonding and antibonding molecular orbitals in the hydrogen fluoride. Are these molecules sigma or pi molecular orbitals?
January 2, 2013

ap chem
January 2, 2013

math
Each time the same letter appears it represents the same digit.Different letters represent different digits.C+C=D;D+E=17;A+2C=D;2B+C=8.Find the sum A+B+C+D+E
December 20, 2012

Math
As an invesment Mrs. Astor purchased 2 paintings. She later sold the two paintings for \$24,000 each. On one painting she made a 20% profit, but on the other she esperienced a 20% loss. Mrs. Astor lost__________ on her investments in the 2 paintings.
December 20, 2012

math
An escalator moves down at the rate of 60 steps per minute. Alan can walk fast up ordinary steps at the rate of 80 steps per minute. There are 50 steps from one level to another. Alan decides to walk fast up the down escalator. How long will it take him to go up one level?
December 20, 2012

help hexagon geometry
iiitss hahaha nto telling you
December 19, 2012

help hexagon geometry
That's not the answer hes dumb
December 19, 2012

math
The points A, B, C, D, & E are located on a straight line, in order, in accordance with the following conditions: The distance from A to E is 20 cm The distance from A to D is 15 cm The distance from B to E is 10 cm C is halfway between B & D What is the distance from B to C?
December 18, 2012

Physics
i thank thee for leh answer :D
December 16, 2012

Physics
An electronic motor is revolving at 2000rpm. After 3sec, it is moving at 150rpm. Determine the angular acceleration. What is angular momentum of the electric motor if the rotational inertia is 18.kg.square meter in initial velocity? In final velocity? What is the average ...
December 16, 2012

Grammar-clauses
a,d,b,b,c,a
December 11, 2012

Cps
Tks. As I thought
December 8, 2012

Cps
HCl+CaCO3 --> CaCl+H3O balanced?
December 8, 2012

french
how do you unscramble eiuocrrl in French?
December 7, 2012

Math
ABC has vertices A(0, 6), B(4, 6), and C(1, 3). Sketch a graph of ABC and use it to find the orthocenter of ABC. Then list the steps you took to find the orthocenter, including any necessary points or slopes you had to derive.
December 7, 2012

math
Over a period of 5 games a basketball team made exactly 44% of their shots. the number of shots taken was more than 310 and less than 350. How many shots were made?
December 7, 2012

algebra
What are the coordinates of the point labeled A?
December 5, 2012

math
logan built an enclosure for his chickens. He wanted opposite sides to be parallel, but the adjacent sides to be different lengths. what was the shape of the enclosure?
December 5, 2012

math
Assuming that the temperature has to be below freezing in order for it to snow, if the probability of the temperature being below freezing tomorrow is 85%, and the probability of there being precipitation tomorrow is 25%, what is the probability that it will snow tomorrow?
December 4, 2012

Economics
Your pay stub deducts money for FICA. What does this mean? A. Money is being withheld for personal exemptions and deductions. B. Money is being withheld for excise and estate taxes. C. Money is being withheld to fund Social Security and Medicare. D. Money is being withheld for...
November 30, 2012

History
Thank you Ms. Sue. I believe you have helped me in the past learn history. I'm homeschooled. So sometimes I do research on the internet for help. I came across some questions that you answered and your answers and links have really helped me understand history. Thanks :)
November 29, 2012

History
Ms. Sue. Do you have the answers for English 3 and 4 for Ashworth High School? I have completed all the other classes by myself. But if I don't finish English 3 and 4 by next week, I'll have to repay my tuition. Please help me!
November 29, 2012

physics
Suppose the roller coaster in Fig. 6-41 (h1 = 38 m, h2 = 11 m, h3 = 25) passes point 1 with a speed of 1.60 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it reach point 2? The distance traveled is 45.0 m.
November 29, 2012

precalc/trig
olve for the interval [0, 2pi]. cos(x+ pi/4)+cos(x- pi/4)=1
November 29, 2012

algebra
A store manager bought c calculators for \$8. All but four were sold for \$10 each. The remaining four calculators were not sold. Find the store's profit, in simplified form, in term of c.
November 27, 2012

Algebra
I solved the problem like that: Sara: 2x Miguel: x 2x+6 =4/3x 18/3 =4/3 -6/3x 6 = -2/3x x = - 9 so Miguel = -9 Sara = -18 Is it correct?
November 27, 2012

Algebra
Sara has twice as much money as Miguel. If she had \$6 more. She would have 4/3 as much money as he has. How much money does each have now?
November 27, 2012

algebra
Help... Can you give me answers for the unit test??
November 25, 2012

Physics
An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?
November 21, 2012

Math
A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?
November 17, 2012

Math
A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?
November 17, 2012

Physics
The diagram below shows a large cube of mass 25 kg being accelerated across a frictionless level floor by a horizontal force, F. A small cube of mass 4.0 kg is in contact with the front surface of the cube. The coefficient of static friction between the cubes is 0.71. What is ...
November 15, 2012

probability
The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the resulting number is divisible by 4? Express your answer as a common fraction.
November 15, 2012

math
I look at a random time of day at a digital clock (that shows times from 1:00 through 12:59). What is the probability that (ignoring the colon) I see a palindrome such as 8:08? Express your answer as a common fraction.
November 15, 2012

Calculus
A wire 4 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both figures...
November 14, 2012

MATH
L=2 H=1
November 14, 2012

Math
isn't x,y above just -4,-6 ? what do i do with the distance formula?
November 14, 2012

Math
Find the point on the line 1x+7y-4=0 which is closest to the point (-4,-6)
November 14, 2012

Social Studies
If I could have some help on this question I'd appreciate it.I think the answer is B. Which problem would most likely result if banks did not exist? (1 point) People would no longer be able to save money. Money would not move through the economy very well. Spending money ...
November 9, 2012

English
I have to choose which word "neatly" is describing. If neatly is an adverb would it be describing packed? everything owned packed boxes I saw that everything we owned was neatly packed in cardboard boxes.
November 9, 2012

physics
tell me
November 8, 2012

Social studies
Does Inca, Maya, or Aztecs have no central government?
November 8, 2012

algebra
there is a circular tank with diameter 7 min a garden. what will be the cost of fixing fountain pipe all around the tank at the rate of \$5 per meter
November 7, 2012

english
Identify the italicized word according to its class in structural linguistics. (There) are no easy answers.
November 7, 2012

Chemistry
Given the information below, calculate the heat provided by combustion of 66.1g of propane (C3H8). ΔHf° (C3H8(g)) = -103.85 kJ ΔHf° (CO2(g)) = -393.5 kJ ΔHf° (H2O(ℓ)) = -285.8 kJ Can Someone explain this in detail? i have to answer this type of...
November 6, 2012

english 2
Neither pesticides nor hormones are used in the production of organic foods. Is there any mistakes here ?
November 6, 2012

math
I need to use calculus to solve this word problem: Find all maximum and minimum values for f(x)= sin(x)+ cos(x) on [0, 2(3.14)] How do I do it?
November 4, 2012

math
Carman wants to cut 3/4 inch peices from 62 long inch wire. How many 3/4 inch peices will she have?
October 30, 2012

math problem
In the multiplication probelem at the right,A,B,C represent different non-zero digits. Each time the same letter appears it represents the same digit. Find the 2 numbers represnted by AA and BC.(0 is zero). A A x B C ------ B B O A A ----- 6 6 0
October 27, 2012

math problem
In the multiplication at the right,A,B,C represent different non-zero digits. each time the same letter appears it presents the same digit. Find the 2 numbers represnted by AA and BC.(0is zero). A A x B C ------ B B O A A ------- 6 6 0
October 27, 2012

math problem
Two large containers each contain the same amount of juice. When 54oz. of the first container are poured into the second container, the second container has 4 times as much juice as the first container. How many ounces of juice did the first container originally have?
October 27, 2012

Math problem
Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give \$21,000 in exchange for 1/3 of the stock. The \$21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share of stock. How much of...
October 27, 2012

Physics help
1.)166.67N 2.)83.333N
October 26, 2012

math homework
x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?
October 25, 2012

math homework
Mr. Burton rides out into the country on his bicycle at 9 mph . Four hours later he starts back riding his bicycle at 6 mph. How long will it take him to get back?
October 25, 2012

math homework
The whole number are written across a piece of paper in order. There is room for 100 digits on each line and there are no spaces between each digit. What are the last 5 digits on the second line? 0123456789101112.......
October 25, 2012

science
I have made a thermometer which measures temperature by the compressing and expanding of gas in a piston. I have measured that at 100 degrees C the volume of the piston is 20 L. What is the temperature outside if the piston has a volume of 15 L? What would be appropriate ...
October 25, 2012

Math
Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?
October 24, 2012

math homewok
There are nine coins on the table , 5 nickels , 3 quarters and 1 dime. Tom , Bill and Drew each pick up three coins. Bill has 25 cent more than Tom. Drew has as much money as Tom and Bill together . What three coins Drew to pick up? my answer: Drew ===)2 quarters+i nickel Is ...
October 24, 2012

x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?
October 24, 2012

Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get \$1 . Each charity in the 2 nd. group will get 9 times as much or \$9 . Each in the 3 rd. will get 9 times as much as each in the 2 nd. groups or \$...
October 24, 2012

physics
518.94 J
October 24, 2012

Math
A cattle train left Miami and traveled toward New York. 14 hours later a diesel train left traveling at 45km/h in and effort to catch up to the cattle train. After traveling for four hours the diesel train finally caught up. What was the cattle train's average speed?
October 23, 2012

ap chemistry
Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO + O2 yields 2CO2 Delta H for this reaction is -135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1). 270.5 mol 2). 40.5 mol 3). 12.0 mol 4). 5.41 mol 5). 16.3...
October 18, 2012

Algebra
"If 3 people can do a job in 5 days, how many days will be needed if 4 people do the same job?"
October 16, 2012

physics
In a Broadway performance, an 80 kg actor swings from a 3.75 m long cable that is horizontal when he starts.? At the bottom of his arc, he picks up his 55.0 kg costar in an inelastic collision. What maximum height do they reach after their upward swing?
October 16, 2012

math
i am a 3-digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit, and the sum of my digits is 15. if you reverse my digits, i am divisible by 6 as well as 3
October 15, 2012

SOC 101
soc 101 In most developed nations health care is?
October 13, 2012

biology
what is the relationship between interactions and interdependence
October 13, 2012

physics 100
Bob, who has a mass of 60 , can throw a 800 rock with a speed of 26 . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 . a) What constant force must Bob exert on the rock to throw it with this speed? b)If Bob is...
October 13, 2012

science
if 25 ml of sugar is mixed with 299 ml of water and then 50 ml of water is poured out, how much sugar remains in the 150 ml of wtare?
October 10, 2012

statistics
The HR department of an organization collects data on employees' age, salary, level of education, gender, and ethnicity. Which data is more likely to follow normal distribution? Why?
October 10, 2012

Science
How many grams of ammonium nitrate is equivalent to 1 gram of calcium nitrate
October 9, 2012

english
October 9, 2012

7th grade masth asap hurry plz ms.sue somebody plz
My gosh really Anonymous WOW what a freaking snitch she wasn't asking for the answer she was asking how to do it and you know what I'm guessing you Google searched the answer because why else would you be here and heck even if she was cheating i bet you she's ...
October 8, 2012

physics
If a car is traveling at a constant speed of 15 meters per second, goes off a cliff, and needs to land 100 meters from the cliff, how high is the cliff?
October 4, 2012

math
Suppose that you have \$12,500 to invest over a 4 year period. There are two accounts to choose from: 4.5% compounded monthly or 4.3% compounded continuously. a. Write the formula for the first account’s compound interest for n compounding per year. b. Write the formula ...
October 3, 2012

math
The Concord Community Park Association receives a \$10,000 donation from an anonymous donor who stipulates that before using the funds to improve the park, they must invest the money until it has doubled in value. The Park Association decides to invest the money in an account ...
October 3, 2012

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