Friday
April 29, 2016

Posts by Lizette

Total # Posts: 16

math
john and james are among 30 students who have applied for a trip to boy's state. two students from the group will be selected at random from the trip. what is the probability that john and james will be the 2 students selected?
May 5, 2013

Chemistry
dilute the concentration of 100mL of KIO3 from 0.5M to 0.0005M
May 1, 2013

math
whats is the radius of 7.5 by the square root of 11 plus or minus 3 ?
May 22, 2012

math
How can you decide whether a photo or drawing can be enlarged or reduced to fit a space without distorting the shape?
March 1, 2012

math
Darius uses the shadow method to estimate the height of a flagpole. He finds that a 5 foot stick casts a 4 foot shadow. At the same time he finds that the flagpole casts a 20 foot shadow. Make sketch. Use Darius's measurements to estimate the height of the flagpole. Thanks...
February 20, 2012

Pre-Calc
Use the fundamental identities and appropriate algebraic operations to simplify the expression. cosx / (1+sinx) Answer: secx Can someone please assist as to how I get to the answer?
April 28, 2011

Economics
I am doing an assignment where I am starting up a Food Van where I sell burgers. What would be some implicit costs? Also, what would be some variable costs? Thanks.
February 25, 2011

Economics
Today's supply curve of classrooms on campus is likely to have a price elasticity of: less than one equal to one greater than one Can anyone please assist? Thanks
February 10, 2011

Economics
Today's supply curve of classrooms on campus is likely to have a price elasticity of: less than one equal to one greater than one Can anyone please assist? Thanks
February 10, 2011

Finance
Ezzel Corporation issued perpetual preferred stock with a 10% annual dividend. The stock currently yields 8% and its par value id \$1000. What is the stock's value?
May 13, 2010

Algebra1
Marcy has a total of 100 dimes and quarters. If the total value of coins is \$14.05, how many quarters does she have?-It has to be in algebra form.
August 17, 2008

science
Calculate the resistance in a circuit in which a 9-volt battery produces 3 amperes. A)3 ohms B)6 ohms C)9 ohms D)27 ohms
October 12, 2007

science
there are three sources of resistance in a parallel ciruit. Two of them are rated at 20ohms, the other at ohms. What is the curuit's total resistance? A)20 ohms B)12 ohms C)8 ohms D)5 ohms
October 12, 2007

science
four 9-volt barreries are connected in parallel. How much voltage is active across the circuit?
October 12, 2007

Chem
Acetic acid is 3% dissociated in a 0.02M solution. Give the concentrations of each of the two ions, the acetic acid, and the Ka for acetic acid. HC2H3O2 ==> H^+ + C2H3O2^- So (H^+) = 0.02*0.003 = ?? (C2H3O2^-) = 0.02*0.003 = ?? Plug into Ka expression and solve for Ka. Post...
July 14, 2007

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