Wednesday
December 7, 2016

# Posts by chrissy

Total # Posts: 248

Phsics
an astronaut, mass 119 kg including spacesuit pushes off from the international space station with a velocity of 2.7 m/s. What is the speed of the Space station in the opposite direction
November 6, 2016

Math
A man standing on top of a 100 foot building sites the top of a nearby building at an angle of elevation of 3.14/8. If he knows the nearby building is 160 feet high,what is his horizontal distance from that building.
August 11, 2016

chemistry
2NO + O2 = 2NO2 How many grams of NO2 will be produced when 5.00 moles of NO react?
May 14, 2016

chemistry
A large salt crystal having a volume of 56 cm3 and a density of 2.17 g/cm3 was dissolved in to sufficient water to make 375 mL of solution. What is the salt concentration in the solution as g/L?
May 12, 2016

Math
Andrea needs 3/8 ounce of vanilla for her cookie recipe. If 1 milliliter is approximately 0.03 ounce, write an expression to determine the number of millimeters of vanilla Andrea needs for her cookie recipe.
May 2, 2016

math
a box is 11 inches tall, 2 inches deep, and 8 inches wide. What is the surface area of the box that is needed for the cereal
February 27, 2016

pre algebra
The length and width of a rectangle are 5 feet and 2 feet, respectively a similar rectangle has a width of 8 feet. What is the length of the second rectangle?
February 24, 2016

algebra
Sheila is climbing on a ladder that is attached against the side of a jungle gym wall. She is 5 feet off the ground and 3 feet from the base of the ladder, which is 15 feet from the wall. How high up the wall is the top of the ladder?
March 7, 2015

math
If I had 3 nickels, 3dimes, and 2 quarters. What fraction of the coins is either a dime or a quarter
January 20, 2015

Psychology Statistics
Many animals, including humans, tend to avoid direct eye contact and even patterns that look like eyes. Some insects, including moths, have evolved eye-spot patterns on their wings to help ward off predators. Scaife (1976) reports a study examining how eye-spot patterns affect...
November 20, 2014

Physics
Consider the skateboarder in the figure below. If she has a mass of 57 kg, an initial velocity of 21 m/s, and a velocity of 10 m/s at the top of the ramp, what is the work done by friction on the skateboarder? Ignore the kinetic energy of the skateboard's wheels. The ...
October 17, 2014

Physics
A crate of mass 54 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in the figure below. If the person pulls with a force of 93 N, what is the crate's acceleration? (Assume that upward is the positive ...
September 23, 2014

Physics
Your friend is an environmentalist who is living in a tree for the summer. You are helping provide her with food, and you do so by throwing small packages up to her tree house. If her tree house is 21 m above the ground, what is the minimum (initial) speed you must use when ...
September 23, 2014

Physics
Two children are playing on a 147-m-tall bridge. One child drops a rock (initial velocity zero) at t = 0. The other waits 1.2 s and then throws a rock downward with an initial speed v0. If the two rocks hit the ground at the same time, what is v0?
September 23, 2014

Physics
A hockey puck slides with an initial speed of 48 m/s on a large frozen lake. If the coefficient of kinetic friction between the puck and the ice is 0.030, what is the speed of the puck after 11 s?
September 23, 2014

Us history
In the monroe doctrine what does the United States say it will do if any European colonies in North or South America declare their independence?
August 20, 2014

Us history
Put this into everyday wording "manifestation of an unfriendly disposition toward the United States.”
August 20, 2014

physics
Vector has a magnitude of 5.10 units and points due east. Vector points due north. (a) What is the magnitude of , if the vector + points 27.4 ° north of east? (b) Find the magnitude of + .
February 4, 2014

language art
ok..can you send me a website to study phrases and clauses.
December 18, 2013

language art
7.D 9.C 11.D *Going with my second choice, are they right*
December 18, 2013

language art
2.A 3.A 7.A 8.B 9.B 11.C
December 18, 2013

language art
1.Chris was being OBNOXIOUS when he -told Mrs.Kelly it was a great day for a race. -insulted Gina's new haircut. -kept the little kids' ball from going into the street. -returned Mr.Cho's keys. 2.If something is STATELY, it is -impressive -informal -common -tacky 3...
December 18, 2013

Calculus-Area between curves
Thanks I figured it out my answer was 9, and it was correct
November 21, 2013

Calculus-Area between curves
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=4*sqrt(x) , y=5 and 2y+4x=8 please help! i've been trying this problem the last couple days, even asked a TA for help, but i can't ...
November 21, 2013

Fundamental Theorm of Calculus
Find the average value of f(x)=7x^{-2} on the interval [1,5]
November 20, 2013

HCA/220
I need help with a discussion question due in week 8. You work in a training and development department of a medical facility. You are asked to develop a training manual for a new employee with no medical terminology background. The new hire will work in orthopedics department...
October 23, 2013

geometry
two angles, a and b are complementary if the sum of their measure is 90 degrees. If angle a is 21 degrees more than twice angle b find the measures of angles a and b. I would like to know how to set this equation up in order to find the answer.
September 21, 2013

math
in her coin collection, holly has 1/3 more coins than jim has in his collection. if the number of coins in 1/2 of holly's collection is 10 more than the number of coins in 1/3 of jim's collection, how many coins does each have?
April 2, 2013

Chemistry
Unknown is completely correct, i got 100. Thank you!
March 28, 2013

chemistry
In Flask A, you reacted 5.10 g Mg with 0.447 mol HCl. In Flask B, you reacted 24.21 g Mg with 0.998 mol HCl. Which ballon will inflate the most?
March 25, 2013

Sociology
This is the reason an employer might restrict employee internet access? a. Employees waste too much time on the internet b. viewing certain kinds of sites could lead to a hostile work environment
March 10, 2013

Sociology
philosophers suggest arguments should be won by? a. the best argument b. a coin flip c.the person who feels most strongly about the issue d. vilence
February 17, 2013

Algebra
The length of a rectangular garden is 4 m greater than the width. the area is 77m^2. find the dimensions of the garden.
February 6, 2013

Averages
Find the average. 39, 47, 52 I got an answer of 46. Is this correct?
January 31, 2013

Help Math
I got b now thank you
December 30, 2012

Help Math
P(A)=0.40 P(B)=0.25 The probability of both events occurring is 0.15. What is the probability of either event occurring? A. 0.15 B. 0.50 C. 0.65 D. 0.80 Is it D?
December 30, 2012

Help Math
Ok thank you
December 30, 2012

Help Math
Events A and B are mutually exclusive. The probability of event A occurring is0.15; the probability of event B occurring is 0.45; what is the probability that A and B will occur? A.0.30 B.0.60 C.1 D.0.40 I think C am I correct?
December 30, 2012

Math
A non normal population is determined to have a mean of 60 and a standard deviation of 4. Ninety six percent of all observed values will occur in what range? A.52.16-67.84 B.50-60 C.48-72 D.40-80 I think A am I correct?
December 29, 2012

calc
f(x) is a polynomial function such that f(-2)=5, f'(-2)=0, and f''(-2)=+3. The point (-2,5) must be an _______ of the graph of f(x) A) relaltive max B) intercept C) point of inflection D) relative min
November 26, 2012

calc
find the absolute maximum and minimum for f(x) = x+ sin(x) on the closed interval [0, 2pi]
November 26, 2012

Math
Idk how to do this! :( Write an equation of the line that passes through the given point and is perpendicular to the given line (1,-1), y=3x+2
April 12, 2012

geometry
ABCD is a parallelogram. BM= 22-3x, DM=10+9x, AM=7y+13 and CM=2y+38. solve for x and y
January 17, 2012

Math
To buy both a new car and a new house, Tina sought two loans totalling \$319.531. The simple interest rate on the first loan was 2.7%, while the simple interest rate on the second loan was 2.6%. At the end of the first year, Tina paid a combined interest payment of \$8334.15. ...
January 11, 2012

math
Solve using the elimination method. 4x+3y=-45.5 -5x+8y=-43
January 11, 2012

Math
Solve using the elimination method. -3x+6y=-3 -6x+4y=-10
January 11, 2012

Math
Solve using the substitution method -x-3y=-20 5x+3y=40
January 11, 2012

algebra
i need help understanding the breakdown of this equation. 9x=7y=1 x=13-4y
May 29, 2011

Chemistry
SO3 + H2O = H2SO4 If you react 34 g of water and have excess SO3, how much H2SO4 would you theoretically produce
March 15, 2011

AP government
"if the general public benefits from entrepreneurial politics why aren't such policies fueled by a social movement or other mass form of political acitivsm?"
March 14, 2011

PHYSICS!!
free body diagram of a 4 kg bucket accelerating downward 2 meters per second squared
March 14, 2011

PHYSICS!!
a student pushes a 10 kg box across a warehouse floor. if the boz accelerates at 3 m/s/s and the force of friction is 20 newtons determine the size of the students applied force
March 14, 2011

english
I know it's a bit too late to help, but just for anyone else needing help, I can help. I'm working on this assignment right now and so far only have two paragraphs. First, in similarity, they lived in close time periods (both lived in 20th century) and were very poor. ...
January 12, 2011

art apreciation
the style ofart produced at the palace of versailles during the reign of king louis XV would today be called a. mannerist b. rococo C. baroque D. classical
November 26, 2010

Statistics
Two ways in which practical statistics outweighs statistical significance?
November 22, 2010

Math
Use the data set {-100, -99, -98, ........-2, -1} to answer the following question. The data set has a first quartile of?
November 6, 2010

statistics
Use the data set {0,4,4,8,4,16} to answer the following question. The mean of the data set is?
November 6, 2010

data management g12
a bridge hand consists of 13 cards. how many bridge hands include 5 cards of one suit, 6 of a second, and 2 cards of a third?
October 31, 2010

Algebra 2
How would I put this word problem into a system of equations (three equations)? Once its in equation form I can easily solve it... A natural food store makes its own brand of trail mix out of dried apples, raisins, and peanuts. One pound of the mixture costs \$3.18. It contains...
September 28, 2010

Algbebra 2
How would I put this word problem into a system of equations (three equations)? Once its in equation form I can easily solve it... A natural food store makes its own brand of trail mix out of dried apples, raisins, and peanuts. One pound of the mixture costs \$3.18. It contains...
September 28, 2010

Algebra 2
How would I put the following equations into y=mx+b form? x+y=4 -4x+y=9
September 22, 2010

geometry
Use the distance formula. I tried giving you a link but I cant.. so you can look it up. Its the square root of x sub minus plus x sub one squared, plus y sub two minus y sub one squared. Its a mouthful! So just look it up and plug in the appropriate numbers. :)
September 22, 2010

ap java
an old-fashioned computer has just 16 bits available to represent an address of a memory location. how many total memory locations can be addressed in this machine? what formula would i use to find this answer?
September 12, 2010

history
why did president harry truman fired general douglas macarthur from his command of american forces in east asia during the cold war?
April 9, 2010

history
during WWII
April 9, 2010

history
what was the key U.S. government memorandum that militarized american foreign policy and indicated national faith in the economy's capacity to sustain large military expenditures ?
April 9, 2010

chem
when doing a paper chromatography lab, my class used a solvent with a neutral pH, which my teacher said would help seperate the amino acids with simialar Rf values. can anyone please explain why we needed to use a solvent with a neutral pH?
March 28, 2010

6th grade math
25% of 100
March 9, 2010

spanish
550.330 translated in spanish please?
February 21, 2010

spanish 1
201 in spanish?
February 21, 2010

spanish
Quien es el chico?
February 21, 2010

chem
do esterification reactions have high or low yields? and why is this?
February 10, 2010

chem
do esterification reactions have high or low yields? and why is this?
February 10, 2010

chem
do esterification reactions have high or low yields? and why is this?
February 10, 2010

organic
what kind of products are esters added to?
February 10, 2010

organic
do esterification reactions usually have a high yield of the desired ester?
February 10, 2010

organic chem!
when trying to purify aspirin, why would i have to add hot water to the crystals that are formed, and then recool the crystals? what does this do to the crystals?
January 24, 2010

aspirin
during the synthesis of aspirin, why do the crystals mostly form when the test tube is placed in the ice bath and not before?
January 24, 2010

biochem
When making Aspirin, I know that sulfuric acid is used as a catalyst. But i was wondering 1.) if the reaction would happen without the cataylst and 2.) can other substances be used as a cataylst in this reaction?
January 24, 2010

Chemistry
I placed the 0.1 in the wrong part of the equation.... so the normality is 0.14
December 14, 2009

Chemistry
Suppose you are titrating an unknown acid soluition with 0.100 N KOH. What is the normality of the acid if 25.00 mL of it requires 35.20 mL of base? I got 0.07 N I am not sure if I did the problem correctly and need some help.
December 14, 2009

Geometry
The diagonals of rectangle ABCD are AC and BD. Hallie found that the distances from the point where the diagonals intersects to each vertex were the same. Which of the following conjectures could she make? a. Diagonals of a rectangle are congruent. b. Diagonals of a rectangle ...
December 10, 2009

Math
Or you could just count how many numbers Ms. Sue provided and multiply by three for your total number of possiblities.
December 10, 2009

Writing a 2 column proof..
I have no idea where to start! and I've got lots of these to write. Directions say write a two-column proof... Given: segment AB is congruent to segment XY, AC is is congruent to XZ, and BC is congruent to YZ. Prove: triangle ABC is congruent to triangle XYZ
November 11, 2009

management
Describe the differences between the directional, portfolio, and parenting strategies. In addition, describe when you would use these major types of strategies.
November 10, 2009

Equation stuff...
Write your answer in standard form with integer coefficients. 1. (-5, 2); m = 2/5 2.(-6, -1); m=-4 how do i do this?
October 26, 2009

history
I know what the Sumner/Brooks affair is, but how did it play a role in leading up to the civil war?
October 25, 2009

biochem
If you were to place a bacteria that could form spores in a stressful environment, what would the cell morphology look like?
October 20, 2009

micro biology
what would a spore former (bacteria) look like if you forgot the safranin stain?
October 20, 2009

english
would it be implacable?
October 17, 2009

english
He was ____ in his pledge to complete the project on time and under budget. what word: implacable, disgruntle, or illusory?
October 17, 2009

english
Their fears proved ___ as the tower is a triumph of design what word could fit? disgruntle illusory implacable i know what the words mean, i just don't know which one would fit
October 17, 2009

Dichotymus key...
I just some tips and help with a dichotymus key I'm doing in anatomy. (i hope I'm spelling it correctly) concerning simple structures of the skeletal system. Well there are 4 main classifications i chose to use; projections/processes, depressions/pits, cavities/...
October 15, 2009

math helpppp!
can someone please help me set up inequalities based on the info below?: jayanta is working to raise money for the homeless by sending information letters and making follow-up calls to local labor organizations and church gorups. She discovered that each church group requires ...
October 15, 2009

math
can someone please help me set up inequalities based on the info below?: jayanta is working to raise money for the homeless by sending information letters and making follow-up calls to local labor organizations and church gorups. She discovered that each church group requires ...
October 15, 2009

Help with deductive reasoning
Determine whether you can use the Law of Syllogism to reach a valid conclusion from each set of statements. 1. If a dog eats Superdog Dog Food, he will be happy. Rover is happy. 2. If an angle is supplementary to an obtuse angle, then it is acute. If an angle is acute, then ...
October 5, 2009

human blood cells
what cells are mostly seen in infections? red or white??
October 4, 2009

Biology
Relate to how the properties of water-evaporation, latent heat of vapourization, etc., contribute to drizzling rain causes flu, as opposed to pouring rain
September 29, 2009

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