erik
Most popular questions and responses by erik
Calculus
A rectangular recreational field needs to be built outside of a gymnasium. Three walls of fencing are needed and the fourth wall is to be a wall of the gymnasium itself. The ideal area for such a field is exactly 250000ft2. In order to minimize costs, it
asked on November 4, 2015 
Math
There is a football field and the length shows 120 yd and the width is 53 1/3 yd a. What are the dimensions of a football field in feet? b. A chalk line is placed around the perimeter of the football field. What is the length of this line in feet? c. About
asked on October 18, 2016 
English
Maya Angelou  I Know Why the Caged Bird Sings What Maya Angelou means by the title of her autobiography.? Please Help if you can
asked on June 17, 2011 
Math
Which container holds more, a halfgallon milk jug or a 2 liter juice bottle? My answer: 1 gallon=3.79 liters 3.79 liters/2=1.895 liters A 2 liter juice bottle would hold more. Can you please check my work and let me know if there is another way to figure
asked on October 17, 2016 
12th grade
The kinetic energy of a 50 newton object resting on the edge of a cliff 30 meters high is?
asked on November 18, 2010 
Calculus
A baseball diamond is a square 90 ft on a side. A player runs from first base to second base at 15 ft/sec. At what rate is the player's distance from home base increasing when he is half way from first to second base?
asked on December 7, 2015 
Math
You complete 3centimeters of a necklace in an hour. Each hour after the first, you triple the length of the necklace. Write an expression using exponents for the length of the necklace after three hours. Then find the length.
asked on September 19, 2014 
verbs
In heaven there are many mansions. "are" is the verb right
asked on August 17, 2010 
Math
Demetria is tiling a square area of her bathroom floor. For every 13 white tiles used, she wants to use 12 gray tiles. Draw a grid , 5 squares by 5 squares, then shade the tiles to show a pattern that would match the ratio of white tiles to gray tiles that
asked on October 11, 2016 
chem
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2(aq) + HCl(aq) Cl1(aq) + HS1(aq) This is what I think it is: Acid = HCl Base = S^2 Conjugate acid =HS^1 Conjugate base = Cl^1 2) H2O2(aq) + PO43(aq)
asked on January 29, 2012 
General Chemistry
Carbonic acid forms when carbon dioxide dissolves in water. A typical can of soda contains a 0.120 M solution of CO2. Assuming that all dissolved CO2 is present as carbonic acid, and that no other substances dissolved in solution affect the pH, what is the
asked on March 11, 2016 
Math
Walmart sells a case of 24 cans of diet coke for $6.88. Publix sells a 12 pack of diet coke for $3.99. Which is the best buy? I need help on this.
asked on October 20, 2016 
physics
what is the torque a bolt with 30 cm wrench with an applied force of 650n?
asked on April 15, 2011 
Physics: Three Identical Masses
Three identical masses of 640 each are placed on the x axis. One mass is at = 100 , one is at the origin, and one is at = 400 . What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses? Take the
asked on October 3, 2011 
verbs
A signed warned drivers about falling rocks along the street. in this sentence would the only verb be warned because falling is an adj describing rocks
asked on August 17, 2010 
science
10 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.1 M C2H3O2. What is the pH of the resulting solution?
asked on March 15, 2013 
chem
Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2(aq)+HCl(aq)Cl^1(aq)+HS^1(aq)
asked on January 29, 2012 
Physics
The steel Ibeam in the drawing has a weight of 5.22 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends?
asked on October 30, 2015 
4th grade math
Judy and Ramey together have 42 stuffed animals. Judy has 12 fewer animals than Ramey. How many stuffed animals does each girl have? I know that the answer is Ramey has 27 and Judy has 12 but I don't know how to write the equation for solving it. I figured
asked on February 17, 2010 
Calculus
Given dy/dt=4y and y(2)=400. Find y(7).
asked on December 4, 2015 
Linear Algebra
Demonstrate that the proyection of a vector U over a vector V is parallel to the vector the vector U. I used the formula of proyection and I argued that as the final result is a number multiplied by the vector U then it is parallel. I need help to verify
asked on February 5, 2019 
Math
Using the binomial theorem, Find the first three terms in the expansion of (x^2+2y^3)^20
asked on August 7, 2018 
physics
A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest?
asked on December 11, 2010 
university of phoenix
In a binomial distribution, n = 12 and π = .60. find the probability x=5
asked on December 9, 2015 
Trigonometry
Verify Identity: cos5xcos3x=8sin^2x(2cos^3xcosx)
asked on July 2, 2011 
physics
A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest? What moment of inertia do I use to
asked on December 12, 2010 
English
Please help me interpret thisI'm in 8th grade and I don't have any idea: What is the main idea? Read the following quote from Thomas Paine's pamphlet, Common Sense. Summarize the main idea of the passage. "Some writers have so confounded society with
asked on September 8, 2010 
social studies
How did Congress respond to the black codes passed in many Southern states after the Civil War? (1 point)by taking away the voting rights of southerners by sanctioning the remaining Democrats in Congress by impeaching the president by expanding the power
asked on June 4, 2016 
body systems
Veins carry blood ________ the heart. A. Away from B. Towards C. Closer to D. All of the above c?
asked on August 26, 2012 
Physics
A car goes around a curve on a road that is banked at an angle of 32.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?
asked on October 3, 2011 
math
Jill bought a can of pop for .75 and jane bought a 6 pack.for 3.60 who got the best buy and why is it the best buy
asked on March 31, 2013 
10th grade math
solve each equation for y. do x and y vary directly? if so indentify the constant of variation. 1.4x=5y 2.2x+3y=6
asked on October 20, 2008 
programming
Java Programming Build 3 methods(no arguments) that will do the work (input, calculations and output) for each of the 3 different figures. Then in the 3 “if” statements (or Switch stmt) that you have to determine which figure was selected, you should
asked on February 21, 2018 
grammar
In the sentence  "Tom could see the anger in Mr. Adams' face." is "Mr. Adams' face" a compound noun? I know Mr. Adams' is a possessive noun and face is a common noun but I am supposed to list compound nouns. Same with the sentence "The Team lost their
asked on June 30, 2014 
Science
5.00 ml of 1.90M HCl is diluted to 0.400l. calculate the pH of the HCl?
asked on September 25, 2012 
Learning
can anyone give me a site from which I can learn educational things, it can be game types of sites, I don't mind that as long as it isn't boring
asked on July 20, 2009 
biology
under what condtions is a hypothesis supported
asked on August 29, 2007 
thesis statement
need a hook + thesis statement for a paper on psychoanalysis Psychoanalysis is a really broad subject. Narrow the subject considerably, and then worry about thesis. As it is, you could write a very, very large book and not finish the subject.
asked on October 26, 2006 
math
a piece of silver density 10.5g displaces 4.5ml {cubed} of water in a test tube what is its mass?
asked on February 4, 2014 
Statistics
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?
asked on May 6, 2011 
Statistics
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?
asked on May 4, 2011 
Statistics
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?
asked on May 4, 2011 
Chemistry
Im stuck on this question. The unusual aspect of functional group replacement of an alcohols hydroxyl group by chlorine by treatment with thionyl chloride is: A)spontaneous creation of a carboccation and SO2 Cl,the ion pair created by SOCl's mechanism of
asked on April 28, 2011 
Math
I cant figure this question out. I could use some help. Solve for x lnxlnx^2+ln5 = 0 Simplify the answer
asked on April 27, 2011 
mathematics
A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the
asked on September 7, 2010 
science
What is the gravitational potential energy of a 2kg ball on planet earth raised 15 meters in the air?
asked on January 22, 2013 
Physics, Math, Science
A 56 kg student is standing atop a spring in an elevator that is accelerating upward at 3.5 m/s^2. The spring constant is 2300 N/m. By how much is the spring compressed? I'm not exactly sure how to approach this problem, much less solve it. The
asked on November 28, 2016 
History
What was family life like in Indian society? Please help.
asked on October 17, 2016 
History
The Aryans were made up of different groups of people. However, in what way were they alike? I am having a lot of trouble answering this question Please help.
asked on October 17, 2016 
Language Arts
I need to practice writing summaries and small essay for my 9 week exam and I am not very good at writing summaries or essays. Can you please help me or provide me with a website that I am able to do practice summaries on. Please help.
asked on October 11, 2016 
Math
On a Christmas package, Audrey needs to use only 40cent stamps and 16cent stamps. If she uses twice as many 40cent stamps as 16cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage?
asked on January 18, 2013 
nervous system
The pulmonary circuit and the ________ circuit make up the blood vessels of the body. A. Flexible B. Systemic C. Blood D. Capillary c?
asked on August 26, 2012 
Math
In the number 22! determine the largest prime factor.
asked on January 30, 2012 
Math
A sequence of four integers is both arithmetic and geometric. if the sum of the four numbers is 20, find the first integer in the sequence.
asked on January 29, 2012 
algebra
if four individuals share $270 in the ratio of 1:1:2:5, how much is the lagest share?
asked on January 24, 2012 
Chem
what is the empirical formula of aspirin, C9H8O4? is it the same again ?
asked on January 2, 2011 
High School Science
A ray of light goes from water (nwater=1.333) into ice (nice=1.309). Which of the following statements is true? 1) The ray gets closer to the normal after crossing the interface. 2) The ray does not change directions after crossing the interface. 3)The ray
asked on March 20, 2010 
biology
Why might it be worse to get an infection from someone in the hospital than from someone on a bus? is it because how bad the infection is, usually people that are in the hospital are in bad condition
asked on February 24, 2010 
Jokes
I am in need for a funny joke which I need to add in my skit. Please give me your ideas, and with them I will try to make mine, thanks:)
asked on July 20, 2009 
math
what is the constant variation 3.2x+3y=6 4.3x1=7y1 write each lineat equation in slope intercepy form 1.x=2y7 solve the equation 1.x15=27
asked on October 20, 2008 
Math
You mix 8 tablespoons of hot sauce and 3 cups of salsa in a green bowl. You mix 12 tablespoons of hot sauce and 4 cups of salsa in an orange bowl. Which mixture is hotter? My Answers: My first train of thought is that there must be a conversion factor to
asked on October 20, 2016 
Math
How many factors do the number 8 and 9 have in common? I got, 8:1,2,4,8 9:1,3,9 My answer: 1 Can you please check my answer to see if I got it correct?
asked on October 11, 2016 
Math
The quotient of two numbers is 46. The difference of the two numbers is 45. What are the two numbers.
asked on August 17, 2016 
Calculus
Find the derivative of f(x)=(2x)^(1/2)ln(15x)
asked on December 7, 2015 
Calculus
Find the derivative of y=(2*x^(3/2))/(x^2+5)
asked on December 7, 2015 
is10
write a story
asked on January 7, 2015 
Physics
A ball starts 1.175 meters off the ground and shot at an angle of 40 degrees with a velocity of 3.2 m/s. Where does it land?
asked on November 11, 2014 
ecenomics
how would you describe the impact of factory goods
asked on September 3, 2014 
Math
Find and express the results in polar form for the following: z = 2(e^(jω)  e^(j7ω)), where ω = omega j is the math equivalent of i = sqrt(1)
asked on August 29, 2014 
statistics
Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16
asked on November 14, 2012 
statistics
Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16
asked on November 14, 2012 
Statistics
Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31
asked on November 7, 2012 
Statistics
Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31
asked on November 7, 2012 
statistics
Suppose that a given population of trees have an average height of 10.2 ft and a standard deviation of 1.3 ft. Find the proportion of the population with heights above 11.8 ft.
asked on May 3, 2012 
trig
1/4tan(2x)
asked on March 15, 2011 
College math
A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the
asked on September 7, 2010 
8th grade science
What is radiation?
asked on March 18, 2010 
Washroom Fix Urgent
what causes water to leak after you've replaced the wax ring on the toilet?
asked on September 23, 2009

physics
Why does this look like this in 2018, fire your programmer please thanks
posted on October 6, 2018 
broward college
The defects in collagen fibers that this disease causes will affect the skin, joints, blood vessels, and others. Muscle weakness and swelling of glands will also occur. I am also stuck on the part of how collagen in reticular fibers differ
posted on September 12, 2017 
writing decimals
thirteen thousandths
posted on August 30, 2017 
English
Ms. Sue, I thought that you had a limit of 2 tries and you were done you only gave Kaai97 1 try, what happened? Erik
posted on December 5, 2016 
Math
It's A
posted on October 26, 2016 
Math
I am confused on this.
posted on October 20, 2016 
Math
Thank you Ms. Sue.
posted on October 18, 2016 
Language Arts
Is there anything I can do practice tests on
posted on October 11, 2016 
Math
THANK YOU MISS SUE I HOPE WE CAN UNITE AGAIN LOL
posted on October 11, 2016 
Calculus
Find the derivative of f(x)=(2x)^(1/2)ln(15x)
posted on December 7, 2015 
Physical Science
4.9 m
posted on December 6, 2015 
algebra 1
Yeah, it's C
posted on October 30, 2015 
organic chemistry
For all four of these, it is only the prefix for the longest chain and number of substituents that matters in determining the number of carbons. In #1, butene has the prefix "but", so therefore has four carbons in the longest chain. Dimethylethylene also
posted on July 12, 2015 
Math
No bra use it's the same time so he didn miss the bus stop
posted on March 10, 2015 
Calculus Help and Check
58,000
posted on November 21, 2014 
umdnj
18.87
posted on October 24, 2014 
grammar
Thank you for answering my question. What made me confused is that in my study guide, "land of liberty" is listed as a compound noun. I am still confused why "land of liberty" is a compound noun but "game of football" is not. Thank you for your help!
posted on June 30, 2014 
health
me too hahaha
posted on June 12, 2014 
English
no it is not
posted on February 4, 2014 
chemistry
Why was the 400.5 multiplied by 100, then divided by the 694.8???
posted on October 9, 2012 
body systems
i know its A i googled it
posted on August 26, 2012 
body systems
D?
posted on August 26, 2012