Sunday
August 31, 2014

Posts by Nathalia


Total # Posts: 12

physics
From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial SPEED of the pebble is 9.7 m/s and it was thrown DOWN (watch your signs).
September 15, 2013

math
evalute 325 times 672
July 30, 2013

physics
A cat is stuck in a tree. You are designated with the job to get it out, yet you do not want to climb the tree, because you may get stuck as well. Instead you set up a pulley system. A rope (consider it massless) runs from the seat you sit on over an ideal pulley and then to ...
March 18, 2013

math
The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a line with a slope of 0.4. What is the height of the candle after it has been burning for 8 hrs?
June 10, 2012

statistics
The First National Bank of Wilson has 680 checking account customers. A recent sample of 60 of these customers showed 32 to have a Visa card with the bank. Construct the 98 percent confidence interval for the proportion of checking account customers who have a Visa card with ...
October 31, 2011

Spanish Fun
Alice in some co untries they call it, Dia de brujas !
October 31, 2011

Statistics
During a national debate on changes to health care, a cable news service performs an opinion poll of 570 small-business owners. It shows that 72 percent of small-business owners do not approve of the changes. (a) Develop a 90 percent confidence interval for the proportion ...
October 30, 2011

statistics
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 15 hours, with a standard deviation of 3.5 hours. It is desired to estimate the mean viewing time within one-quarter ...
October 30, 2011

chemistry
what mass of water is needed to completely react with 2.35g of Ca
November 1, 2009

Chemistry-
explain why two beakers may not have the same weight
September 8, 2009

college intro chemistry
in the equation pv=nrt slove for t(temperature)
February 27, 2009

mah
4m^2+12m+9
November 4, 2008

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