leon
Most popular questions and responses by leon
American Government
"His 1863 Emancipation Proclamation freed Confederate slaves but scholars still debate whether it rested on any firm constitutional foundation" Based on the excerpt, which statement best illustrates the impact of Lincoln's proclamation on government? A: it
asked on May 23, 2017 
Physical Science
What are the products of a double replacement reaction between potassium bromide and silver nitrate? Name the resulting compounds.
asked on March 14, 2017 
phys
The space shuttle, with an initial mass M = 2.41E+6 kg, is launched from the surface of the earth with an initial net acceleration a = 26.1 m/s2. The rate of fuel consumption is R = 6.90E+3 kg/s. The shuttle reaches outer space with a velocity of vo = 4632
asked on November 11, 2010 
Chemistry
When iron metal reacts with oxygen, the reaction can form Fe2o3 (numbers are subscripts). Write a balanced chemical equation for this reaction and find the number of moles of oxygen that are needed to form 6 mol of Fe2o3. Show your work. I am really stuck
asked on March 14, 2017 
Algebra
What is the quotient 6x/x^2+2x3 divided by x^24x12/x^2+4x+3 in simplified form? State any restrictions on the variable A: (x+1)/(x1)(x+2) x does not equal 3, 2, 1, and 6 B: 1/(x+2) x does not equal 3, 2, and 6 C: (x+1)/(x1)(x+2) x does not
asked on May 22, 2017 
American Government
Which adjective best describes how the Necessary and Proper Clause of the US Constitution is often interpreted by the federal government? A. brittle, meaning that it falls apart when used in a legal argument B. elastic, meaning it can be expanded as needed
asked on May 9, 2017 
Algebra
Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj?
asked on January 17, 2017 
science
Which rate constant would result in the fastest reaction? Which rate constant would result in the fastest reaction? 1 1.3 × 103 L/mol · s 2 2.8 L/mol · s 3 9.5 × 102 L/mol · s 4 4.2 × 103 L/mol · s
asked on August 22, 2016 
science
The halflife of carbon14 is 5730 years. If we start with 10 grams of carbon14, after 5730 years, we will have _____ of carbon14 left.
asked on August 22, 2016 
science
A graph of experimental data is a straight line when ln[H2] is plotted versus time. Which rate law fits the data? 1 Rate = k(ln[H2]) 2 Rate = k/[H2] 3 Rate = k[H2] 4 Rate = k[H2]2
asked on August 22, 2016 
math
A side of an equalateral triangle is 2/8 cm long. Draw a picture that shows the triangle. What is the perimeter of the triangle?
asked on February 25, 2013 
PHYS
A bungee jumper (m = 61.00 kg) tied to a 45.00 m cord, leaps off a 75.00 m tall bridge. He falls to 5.00 m above the water before the bungee cord pulls him back up. What is the magnitude of the impulse exerted on the bungee jumper as the cord stretches?
asked on November 4, 2010 
Basic programming principles
The user wants to display a message a fixed number of times, if you know the message and the number of times (number) it must be displayed what would be the for statement, will this be correct or incorrect ONLY indicate correct or incorrect at your answer
asked on October 1, 2014 
math calculus
Use implicit differentiation to find the equation of the tangent line to the curve xy^3+2xy=9 at the point (31). The equation of this tangent line can be written in the form y=mx+b where m is
asked on November 13, 2010 
science
The halflife of carbon14 is 5730 years. If we start with 10 grams of carbon14, after 5730 years, we will have _____ of carbon14 left.
asked on August 23, 2016 
French
French Help! I'm having a very rough time figuring out the correct verb conjugation for each of these passé composé sentences. Can somebody that is experienced with the language lend a hand? Nous (avons allé, sommes allé, sommes allés) au cinéma hier
asked on April 30, 2019 
Help Please. Math
By comparing the amount of carbon14 to amount of carbon12, one can determine approx how long ago the organism died. The halflife of carbon14 is 5730 years. Assume the initial quantity of carbon14 is 600 milligrams. the equation is A (t)=600*(.5)^(t)
asked on April 17, 2017 
Maths
triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD.
asked on December 6, 2011 
Economics
Ashley is currently consuming 10 hot dogs and 8 hamburgers a week. The last hot dog she consumed yielded 20utils while the last hamburger she ate gave her 25utils. If hot dogs cost $2 and hamburgers cost $2.50, is Ashley consuming the correct quantities of
asked on November 8, 2010 
Math
Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj?
asked on January 17, 2017 
Math
The number 48 consists of how many distinct prime factors?
asked on July 25, 2017 
Science
5.The process of desertification can occur when B.farmers use contour farming techniques C.an area of forest is clearcut D.an area of forest is selectively cut 7.Which of the following statements describes the conservation of a natural resource? A.A
asked on February 5, 2014 
calculus
sum (n*2^n)/(2^n +3^n) [n to infinity] conv or div ? and how to get that? thank you!
asked on March 22, 2011 
Chem
In the Molecular Geometry Lab 1. List three ways in which models used in this experiment are inaccurate representations of orbitals? 2.explain why the ClF3 molecule is not a trigonal planar molecule?
asked on November 2, 2010 
statistic
I claim that I make 80% of my basketball free throws. To test my claim, you ask me to shoot 20 free throws. I make only 8 of the 20. “Aha!” you say. “Someone who makes 80% of her free throws would almost never make only 8 out of 20. So I don’t
asked on June 6, 2012 
physics
A mass m1 = 6.0 kg sits on a frictionless table, and rotates at a constant speed v = 3.0 m/sin a circle of radius R = 1.5 m. m1 is attached by a massless string which passes through a hole in the centre of the table to a second m2 (which hangs freely
asked on April 12, 2012 
Global : Columbus
1) Why do you think Christopher Columbus is a villian? 2) Who discovered America before Columbus?
asked on October 1, 2008 
Econ
The 1year interest rate on Swiss francs is 5 percent and the dollar interest rate is 8 percent. (A) if the current $/SF spot rate is $0.60, what would you expect the spot rate to be in 1 year. (B) Suppose US policy changes and leads to an expected future
asked on December 10, 2014 
Math
g(x) = (1x)(4+6x) / (5x^2+4) Horizontal asymptote y = ?
asked on December 9, 2014 
5th grade math
What fraction of a dollar is shown by coins (2 quarters, 1 dime, and 5 nickels)? I got 80/100 equals 8/10. Is 8/10 the correct answer? If not can you show me how to get the right answer?
asked on December 15, 2013 
java programing
Write a program that evaluates the volume and surface area of a sphere of radius 11.2cm.
asked on July 28, 2011 
calculus
The parametric curve x(t)=3cos(t) y(t)=7sin(2t) intersects itself at a point P=(x0,y0) where x0= y0= The slopes of the 2 tangents at this point are? THANK YOU!
asked on March 20, 2011 
LINEAR ALGEBRA
How to prove or disprove (a)if A has a zeronentryonthe diagonal then A is not invertible (b)if Ais not invertible then for every matrix B, AB is not invertible (c)if A is a nonzero 2X2 matrix such that A^2+A=0, then A is invertible
asked on October 24, 2010 
Finance
if the price of milk has quadrupled (that is, grown four times) over the past 25 years, what has been the annual rate of inflation in milk price over that time period?
asked on October 23, 2009 
Algebra
simplify the complex fraction x/(x+2)/((1/x)+1/(x+2)) if you put that in the calculator it should show you what it looks like properly. A: x^2/2 B: x^2/x+2 C: x^2/2x+2 D: x^2+2x+2/2x+2 I think it is C
asked on May 22, 2017 
physics
A boulder flies through the air at 14.5 m/s with kinetic energy 310 J. What's its mass? What's the boulder's kinetic energy if its speed doubles? What's the boulder's kinetic energy if its speed is halved?
asked on February 9, 2016 
Statistics
For each of the following (a) indicate how many factors are included, and (b) tell how many levels there are for each factor: a) 2x2 b) 2x3 c) 2x3x2 d) 4x3 e) 4x3x2x3
asked on February 14, 2012 
tusd
last year, the sports athelitic club charges 20.00 per class. 70 people attended. The club wants to increase the class price. the club expects to lose one customer for each $1.00 increase. a. what should the new price be to maximize the income? b. what is
asked on February 7, 2012 
percentage
you have 50 students one day and 70 the next what is the percentage increase
asked on January 13, 2011 
chem
1. what is the quantum numbers of the last electron of Sb?(n= l= ml= ms=) and why the answer are this number? 2.how many electrons would be found in the n=6 level if all possible orbitals were completely filled with electrons? how to calculate this one?
asked on October 1, 2010 
chemistry
For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. which one of the two mobile phases is the more polar? Actualy I
asked on September 29, 2010 
chemistry
For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. what is the relationship between the polarity of molecules and
asked on September 28, 2010 
chemistry
it is 0.1M of acetic buffer equal to sum up of 0.05M of acetic acid and 0.05M of sodium acetic ?
asked on August 14, 2010 
Physics
Consider a simple alternating current generator such as Hippolyte Pixii's dynamo. The current generated by such dynamo can be described as simple oscillating cosine signal. Assuming for simplicity that the max current generated each time a pole of Pixii's
asked on November 25, 2008 
Calculous
Without using a calculator, find the sum of the series. Pretend in place of E is Greek Letter Sigma. 27 E(4 + 1/2n) = ? N=0
asked on December 12, 2014 
Sequences
An arithmetic sequence has first term of 6 and difference of 8; what is the tenth term? a10(subscript 10) = ?
asked on December 12, 2014 
Basic programming principles
What would be the answer of the following: (only type in your answer at the answer space provided) Result a = 5 b = 7 Answer = 15 Do while answer
asked on October 1, 2014 
Basic programming principles
The for next statement is used to display the consecutive numbers from 1 to 10K = 1 For I = 1 to 10 Display k, “ “K = k + 1 Next I The output will be 10 9 8 7 6 5 4 3 2 1 Will the above statement output be correct or incorrect
asked on October 1, 2014 
Basic programming principles
If the value of K is equal to 6, increase the value of A by 5%, if the value of K is equal to 4, decrease the value of A by 8, if the value of K is equal to 7, add the value of B to the value of A, otherwise decrease the value of A by 12%Will the following
asked on October 1, 2014 
Basic programming principles
Piet earns R20 per hour, if he works more than 30 hours then he receives an extra R8 per hour, will the following statement be correct or incorrect (only type in correct or incorrect at your answer space)If hoursworked > 30 then Salary = salary +
asked on October 1, 2014 
Math
Sam has a total of 200 dimes and quarters. If the total value of the coins is $28.10, how many quarters does he have?
asked on August 22, 2012 
Chemistry
If 2 grams of acetic acid is reacted with excess 1pentanol, what mass of pentyl acetate would you expect to achieve theoretically?
asked on April 10, 2012 
java programing
Write a program that evaluates the volume and surface area of a sphere of radius 11.2cm.
asked on July 28, 2011 
java programing
If you were writing a program application that was harvesting people's emails and telephone numbers, explain and demonstrate how you would validate the individual emails and telephone numbers! That is to make sure all the emails and telephones you got were
asked on July 28, 2011 
nutrition
o What are some current nutritional issues, such as obesity or malnutrition for infants
asked on April 2, 2010 
Finance
if the price of milk has quadrupled (that is, grown four times) over the past 25 years, what has been the annual rate of inflation in milk price over that time period?
asked on October 22, 2009

Maths lit
Nop it requires mathematics dear
posted on June 7, 2019 
SCIENCE
thanks alot man
posted on March 27, 2019 
alg 2
They mean the answer is A. Just took the assignment.
posted on May 22, 2017 
Algebra
Just got the assignment back and your answers are for sure correct!
posted on May 22, 2017 
Algebra
my bad its not +2 its +3
posted on May 22, 2017 
Algebra
What is S10 for 1+2+9+27+...? The 10 is small and below the S. A: 9,841 B: 29,525 C: 14,762 D: 29,524
posted on May 22, 2017 
Algebra
Can you help on one more question?
posted on May 22, 2017 
American Government
so B, elastic
posted on May 9, 2017 
Math
Okay. All of you need to pay reaaally close attention. All those commenting different answers like "omg 100% correct my answer is for sure no doubt correct" need to post the questions they had to answer to. Because you are literally posting answers to
posted on April 26, 2017 
American Government
regardless of if its A, C or D the answers for 2 are interpreting the rules for the house and naming representatives to committees seriously guys, they change the order to the answers. you can't just say its ABCDEFG or whatever you have to state what the
posted on February 9, 2017 
L.Arts
Greedy raisin, the does !@#$%^& that mean
posted on November 21, 2016 
life orientation
This can separate the relationship between b.s.a and lead To conflict
posted on May 16, 2016 
physics
thank you 2.95 kg 1240 J 77.5 J
posted on February 10, 2016 
math
If abdul runs 6 miles in 50 minutes. At the same rate, how many miles would he run in 35 minutes?
posted on March 6, 2015 
Calculous
Thank you!!
posted on December 12, 2014 
English
My parents remind us to be good people.
posted on July 23, 2014 
History
you guys are just a peacie of it spam omg you guys can get sewed and everything .l.
posted on March 6, 2014 
Science
So is 7 C?
posted on February 5, 2014 
Help with science
So then is 7 C?
posted on February 5, 2014 
5th grade math
I'm sorry its 4 nickels, not 5 nickels. Can you check my answer again..thanks
posted on December 15, 2013 
INTRODUCTION TO THE SHORT STORY, PART 1
hes right
posted on July 3, 2012 
history
i like to eat food
posted on May 17, 2012 
math
write an equation in words and in symbols to represent this situation: Grace has $100.She is buying charms for her bracelet that cost $5 each.Write an equation showing the relationship between the number of charms (c)she buys and the amount of money she
posted on May 2, 2012 
history
Yes.
posted on December 3, 2011 
Math Grade 3
amount of carbhohydrates = 27 amount of calories = 121 amunt of calorie sourses other than carbhohydrates =121  27 =94
posted on December 3, 2011 
3rd Grade Math
@ missy ; the same
posted on December 3, 2011 
4th grade
explain the expanded algorithm for 92x5
posted on April 21, 2011 
prealgebra
W
posted on October 24, 2010 
chemistry
Also, for the same situation, which one of the two mobile phases is the more polar? Actualy I need two pieces of evidence... I think the polar one should be the isopropanol and ammonia because it moves slower. Can you help me come up another reason? Thank
posted on September 29, 2010 
Physics (is this right?)
yes
posted on April 13, 2010 
Global : Columbus
Thanks, I truly believe he is a villian for what he had done to those poor innocent people. By stealing their crops, cloths, land, and making them slaves. But I know that someone had discovered the Natives before Columbus I just don't know who...... all I
posted on October 1, 2008