5.The process of desertification can occur when B.farmers use contour farming techniques C.an area of forest is clear-cut D.an area of forest is selectively cut 7.Which of the following statements describes the conservation of a natural resource? A.A factory burns coal to run ...
February 5, 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?
December 15, 2013
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 dont believe your...
June 6, 2012
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 has left (l)<----...
May 2, 2012
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 without moving). There is ...
April 12, 2012
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 the maximum income ...
February 7, 2012
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 valid.
July 28, 2011
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
November 13, 2010
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 m/s, and a mass of ...
November 11, 2010
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 these two goods to ...
November 8, 2010
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? Can anyone show me how ...
November 4, 2010
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?
November 2, 2010
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
October 24, 2010
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? Thank you~
October 1, 2010
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 need two pieces of ...
September 29, 2010
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 you~
September 28, 2010
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 the Rf values?
September 28, 2010
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 magnet passed...
November 25, 2008
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 dont know who...... all I know is that he was ...
October 1, 2008