Tuesday
September 1, 2015

Posts by Erin


Total # Posts: 624

English
Please help me!
April 2, 2013

English
American Life, stereotypes? Just like television, commercial, etc. When we are watching TV, it gives us a "snapshot" of American life. If you look at the commercials alone, what would this tell you about how we live? I ask you to pretend that you are from another ...
April 2, 2013

Math
Please help! 1. A taxi cost $2.25 for the first mile plus .15 for each additional tenth of a mile. For a 5.2 mile trip Eric paid $10 and told the driver to keep the change. How much was the drivers tip? 2. 2 trillion is how much more than seven hundred fifty billion. Write the...
April 1, 2013

Physics please help!!
A cart of mass M1 = 5.00 kg and initial speed = 3.00 m/s collides head on with a second cart of mass M2 = 3.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision. I have tried the answer 5.0 m/s however it says it is wrong. Please help!
March 23, 2013

english romeo and juliet
I am writing an essay which has to have 3 character traits of romeo and 2 quotes to support each trait. I still need quotes for impulsive and fearless. Can you please help?
March 20, 2013

Math
Thank you
February 25, 2013

Math
You have 34 math and science problems for homework. You have 10 more math problems then science, how many of each do you have?
February 25, 2013

Math
Factor the polynomial 4x^2- 81
February 25, 2013

Physics
A bicycle wheel of radius 0.30 m is spinning at a rate of 60 revolutions per minute. What is the centripetal acceleration of a point that is 0.11 m from the outer edge of the wheel?
February 17, 2013

maath HELPPPP
a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = -16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a second)
February 14, 2013

math
a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = -16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a second)
February 14, 2013

Languege arts
1. Which is the BEST summary of "LAFFF"? (1 point) Angela used a time machine to win a writing contest. Peter and Angela invented a time machine. Peter used a time machine to travel to the future. 2. The author describes Peter's Halloween costume in order to (1 ...
February 7, 2013

Physics
It's definitly 1J
January 23, 2013

math
The area of a parallogram is 128 sq miles . Find its base &height . 2x-4. 2x+ 4
January 23, 2013

math
What is a negative 588 divided by two numbers that equal the sum of 7?
January 23, 2013

help math
A boat travels down the river in 3.0 hours. The return trip up river takes 3.6 hours. A one way trip down or up river is a distance of 23 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
December 17, 2012

math quick help
Bernie put in a garden in her back yard. The garden has a perimeter of 195 feet. She wants to know the total surface area of the garden and all she knows is the perimeter and that the width is 20% or (1/5) of the length. (Remember 20% and the fraction 1/5 is the same decimal ...
December 17, 2012

help mathhh!!!
which one would represent the water with no current?
December 13, 2012

help mathhh!!!
A boat travels down the river in 2.3 hours. The return trip up river takes 3.7 hours. A one way trip down or up river is a distance of 26 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
December 13, 2012

math (precalc)
Point S is 4 km west of point R, and point T is 4 km southwest of S. Find the bearing and distance from R to T. (If possible, show diagrams too, please! Thanks in advance.)
December 13, 2012

Math
Sue was in excellent shape in high school, she could ride her 10-speed bicycle 4.8miles to her grandmother's house in 11 minutes. Her return trip home took 14 minutes. The times are different due to there being a slight downhill slop on part of the trip to her grandmothers...
December 9, 2012

Math
How do you set this up? Solve the system using substitution: A boat travels 18 miles downstream in 1.5 hrs. It then takes the boat 3 hrs. to travel upstream the same distance. Find the speed of the boat in still water and the speed of the current. Thanks you!!!
December 6, 2012

Chemistry
What type of bonds(sigma or pi) and how many of each are used to form a triple bond?
December 3, 2012

chemistry
what theory describes how negatively charged electron orbitals orient around a positvely charged nucleus?
December 3, 2012

English
"I watched Hassan get raped," I said to no one. Baba stirred in his sleep. Kaka Homayoun grunted. A part of me was hoping someone would wake up and hear, so I wouldn't have to live with this lie anymore. But no one woke up and in the silence that followed, I ...
December 2, 2012

English
Sorry, "dozed" should be "dozen" in the quote .
December 2, 2012

English
"Well the two of us can have fun together," I said. Baba smiled. Winked. "Dress warm," he said. It should have been just the two of us--that was the way I wanted it--but by Wednesday night, Baba had managed to invite another two dozed people." (p. 87) ...
December 2, 2012

Math 8R - HW Qs. Check
(-2)2 = -4 (you said positive 4, I don't know if it was a typo, or...) Having said that, all should be correct... I'm confused. Did you copy the question correctly?
December 2, 2012

College Physics 1
A mass is oscillating on a spring with a period of 4.60s. At t=0s the mass has zero speed is at x=8.30cm. What is the value of t the first time after t=0s that the mass is at x=4.15 cm?
November 28, 2012

social studies
In early Korea what were the strongest influences?
November 18, 2012

Math
Can you please help me with this? Convert 36.7 lbs/in(3) to kilograms per cm(3). (There are 14.59 kilograms in 32.174 pounds and 61.02 in(3) in 1000 cm(3)). Thanks!
November 18, 2012

social studies
thank you so much!
November 18, 2012

social studies
what was Europe's major religion during the Enlightenment period?
November 18, 2012

chemistry
0.24 grams of benzene (C6H6) is dissolved into 4.9 grams of melted biphenyl. The freezing point of the mixture was determined to be 4.4 degrees below the freezing point of pure biphenyl. Based on these results, what is the Kf of biphenyl? (Use the standard units in your ...
November 13, 2012

Chemistry
If a 11.0 mL sample of vinegar (aqueous acetic acid ) requires 19.0 mL of 0.500 M NaOH to reach the endpoint, what is the original molarity of the acetic acid solution?
October 29, 2012

Physics
A roller coaster travels 29.1 m at an angle of 34.0 above the horizontal. How far does it move horizontally?
October 23, 2012

Physics
A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 38.8 m/s. At the same time, it has a horizontal velocity of 54.3 m/s.At what speed does the vehicle move along its descent path
October 23, 2012

Chemistry
Calculate the number of carbon atoms in 0.75 L of acetone (CH3COCH3). (density=1.3g/mL and boiling point=48.5 degrees)
October 22, 2012

Can you help me make my thesis sound clear & good
In the short story, "how much land does a man need," the author Leo Tolstoy would describe that human worth based on shallow measurements such as wealth and possessions make true love and humanity impossible because of greediness, the devil filling our minds with ...
October 15, 2012

Algebra 2
x+2y+5z=-1 2x-y+z=z 3x+4y-4z=14 solve the system using linear combination method.
October 14, 2012

english/essay writing help
Hello! So Im having trouble with my thesis statement for an essay. My teacher gave us three questions to answer and make the answers into a thesis statement. heres the questions and instructions: Does defining human worth based on shallow measurements, such as wealth and ...
October 14, 2012

chemistry
a glass jar containing .27 mol of Nitrogen with a leaky lid is heated from room temperature 22 celcis to 150 celcis. How many moles of Nitrogen remain? How many gtams?
October 12, 2012

Chemistry
What mass (g) of KHP is required to neutralize 10.00 mL of 0.1092 M NaOH?
October 9, 2012

Chemistry
How many mL of the 0.1029 M standard NaOH solution is required to titrate 0.2247 g sample of KHP to the phenolphthalein end point?
October 9, 2012

Chemistry
What mass of NaOH is required to prepare 500.0 mL of 0.1029 M stock solution?
October 9, 2012

chemistry
How many grams of Kl are required to prepare 500 mL of 0.04 M Kl?
September 25, 2012

Chemistry
A bottle of wine contains 11.4% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
September 23, 2012

Chemistry
density of water and the antifreezer is 0.9975 g/mL and 1.141 g/mL I got molality of 54.5 and molar mass 18.33g.
September 23, 2012

math
how to solve 2x-9/3=8-3x
September 20, 2012

Social Studies
mexico,canada,U.S
September 20, 2012

math
thnx
September 20, 2012

math
how do you solve 4(3d-2)=8d-5
September 20, 2012

Math
ask your teacher for tutoring or find out if there are any tutoring classes in ur school. (good luck)
September 20, 2012

Biology
Down syndrome or trisomy 21, in humans is caused by an extra copy of relatively small chromosome 21. if a male with down syndrome could have children what is the likelihood that his children will also have down syndrome? a. 0 b. 25 c.50 d. 75 e. 100
September 3, 2012

English
Thank you Ms. Sue!
August 26, 2012

English
Could you help me find the "simple subject" and "simple predicate" in the following sentence please? "It is going to rain tomorrow." Thank you!
August 26, 2012

Math
The area of a square is 10 square meter. what is the product of the lengths of the diagonals of the square?
August 22, 2012

math problem
I have to find the area of a 14 yd square...the answer is the number plus the units squared
July 13, 2012

physics
A 9.1 g ball is hit into a 98 g block of clay at rest on a level surface. After impact, the block slides 8.0 m before coming to rest. If the coefficient of friction is 0.60, determine the speed of the ball before impact.
June 22, 2012

trigonometry
an automobile tire has a diameter of 36 inch.how many revolution will the wheel make an arc the automobile travels 1 mile (5280 A)?
June 21, 2012

chemistry
I am given the concentration of HClO4 and a pressure for H2... how do i plug either of the givens into the equation youve shown??
June 18, 2012

chemistry
calculate the reduction potential for hydrogen ion in a system having a perchloric acid concentration of 2.00 x 10^-4 M and a hydrogen pressure of 2.50 atm.
June 18, 2012

chemistry
will fe3+ oxidize Sn2+ to Sn4+ in acidic solution?
June 18, 2012

chemistry
the time is supposed to be 4.6 hours. i am not having problems getting the mass of Cu, i am just struggling with how to find how long it will take.
June 18, 2012

chemistry
i get 4.76 x 10^-5 mol CaC2o4.. squaring the answer gives me a ksp= 2 x 10^-9 is this right?
June 10, 2012

chemistry
a liter of a solution saturated at 25C with CaC2O4 is evaporated to dryness giving a 0.0061 gm residue of CaC2O4. Calculate the concentrations of the ions, and the molar solubility and the solubility product constant for this salt at 25C. Show the balanced reaction.
June 10, 2012

Elementary Statistics
1) Construct a confidence interval of the population proportion at the given level of confidence. x=60,n=300, 99% confidence. The 99% confidence interval is (_,_) 2) A researcher wishes to estimate the proportion of adults who have high-speed internet access. What size sample ...
June 6, 2012

World History
Who ruled the Byzantine Empire?
May 29, 2012

Chemistry
Ammonia reacts with oxygen at 120 C to form NO and H20 in a sealed 40-L container. When 34 g of ammonia reacts with 96 g of oxygen, what is the partial pressure of the NO? What is the total pressure?
May 20, 2012

English
Thank you, Writeacher! This question comes from online schools affiliated with K12. I am constantly finding students who use these sites to copy answers. Liz, did you ever think of reading the lessons the school provides or of contacting your instructor?
May 13, 2012

Math
What is the x-coordinate of the image of P(5,11) under R-0,90*-?
April 15, 2012

Math
What are the coordinates of the image of the point P(4,25) under R-o, 180*-, where O is the origin?
April 15, 2012

Math
Consider the points P(20, 20), X(a,b) and Y(a+20, b+20). Is Y=T-op-(X), where Ois the origin. explain
April 15, 2012

Math
Find the image of the point P(-11, -34) after 6 successive half turns about the point C(-11, 0)
April 15, 2012

Math
The image of the point P(-38, 127) when reflected over the line y=x is...
April 15, 2012

Trig
i dot geht thhis werlk? cahn sumwone elp meh?
April 5, 2012

Physics
A bullet of mass 0.06kg is fired horizontally with a muzzle speed of 700 m/s into a pendulums hanging block of mass 2.0kg. The block and the bullet then move up a height, h, above the pendulums equilibrium position. What is the speed of the bullet/block combination after the ...
March 15, 2012

algebra..
Thank you so much !
March 13, 2012

algebra..
Write an aquation in standad form that satisfies the given conditions: Paralled to the x-axis and through ( 4, -1)
March 13, 2012

chemistry
How do you do the hybridization of CBr4?
March 5, 2012

physical science
In raising a 5000-N piano with a pulley system, the movers note that, for every 2m of rope pulled down, the piano rises 0.3m. Ideally, show that the force required to lift the piano is 500-N.
February 28, 2012

Algebra
You operate a gaming Web site, where users must pay a small fee to log on. When you charged $3 the demand was 520 log-ons per month. When you lowered the price to $2.50, the demand increased to 780 log-ons per month. (a) Construct a linear demand function for your Web site and...
February 21, 2012

Algebra 2
You are cooking chili. When you take it off the stove, it has a temperature of 205°F. The room temperature is 68°F and the cooling rate of the chili is r = 0.03. How long will it take to cool to a serving temperature of 95°F
February 20, 2012

Math
1 bounce=32 2 bounce=16 3 bounce=8 4 bounce=4 5 bounce=2 6 bbounce=1
February 20, 2012

English
When there is change in reactant, product, or temperature the equilibrium position will shift in a direction that tends to decrease change in this situation. When the concentration of one of the products of an equilibrium reaction is higher than the other, then the solution ...
February 20, 2012

Geometry Are these two triangles similar? Thanks!
ya
February 20, 2012

physics 213
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 44.7 km/s and 56.2 km/s. The slower planet's orbital period is 8.61 years. (a) What is the mass of the star? (b) What ...
February 19, 2012

math 12
The world's population is 1970 was about 3.6 billion. If the population has increased at 2% each year since then, what will the world's population be in 2010?
February 14, 2012

physics 213
A duck has a mass of 2.80 kg. As the duck paddles, a force of 0.120 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.190 N in a direction of 48.0 ° south of east. When these forces begin to act, the velocity of the duck is 0....
February 3, 2012

physics
During a circus performance, a 74.8-kg human cannonball is shot out of a 18.0-m-long cannon. If the human cannonball spends 0.844 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.
February 1, 2012

Pre-Algebra
Help! I am not really good with story problems! Forest rangers measure a depth of 82" of snow on a mountain peak at 8am. Snow is expected to fall at a steady rate of 3/4" per hour throughout the day. A) write an equation that approximates the depth of 'y' of ...
January 30, 2012

physics
In the javelin throw at a track-and-field event, the javelin is launched at a speed of 35.0 m/s at an angle of 33.7 ° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is ...
January 26, 2012

Physics
Relative to the ground, a car has a velocity of 14.8 m/s, directed due north. Relative to this car, a truck has a velocity of 24.0 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
January 26, 2012

Math
What is the range of y= -(x-2)^2+2 ?
December 31, 2011

english
What do you know about the fact? I have to write a research paper about Genocide. It must have a body and conclusion
December 19, 2011

math
16b to the 8th power + 40b to the 7th power + 25b to the 6th power
December 14, 2011

science
Why are proteins necessary in your body? What are polymers that build up to make proteins?
December 9, 2011

Algebra 2
How would you graphy this question and also solve for the intercepts: y=2(x-3)^2-1
December 2, 2011

science-biology
it is a recessive gene
December 2, 2011

Physics 12
An alpha particle is accelerated by a voltage of 1.53*10^3 V and is then deflected by a magnetic field of strength 0.020 T into a circular path of radius 0.40 m. If the alpha particles have a charge of 3.2*10^-19 C, what is their mass?
December 1, 2011

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