IsTim
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Questions Asked

IsTim:
Group Title
How to calculat Pooled MEean and Standard Deviation?
 updated one month ago
 2 replies
 No Medals Yet
Mathematics

IsTim:
Group Title
he following definite integral can be evaluated by subtracting F(B)  F(A), where F(B) and F(A) are found from substituting the limits of in…
 updated 8 months ago
 83 replies
 2 Medals
Mathematics

IsTim:
Group Title
The ladder is carried across a corner of a soccer pitch. The man steps on to the soccer pitch 3.5 m from the corner and off when 2.7 m from …
 updated 10 months ago
 6 replies
 1 Medal
Mathematics

IsTim:
Group Title
Balance: C5H12+O2>10CO2
12H2O
 updated one year ago
 13 replies
 1 Medal
Mathematics

IsTim:
Group Title
In Part A, you determined that the heat added to the coffee is what you got. If it takes 4.2 J of energy to raise the temperature of 1.0 mL …
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

IsTim:
Group Title
In Part A, you determined that the heat added to the coffee is what you got. If it takes 4.2 J of energy to raise the temperature of 1.0 mL …
 updated one year ago
 35 replies
 1 Medal
Mathematics

IsTim:
Group Title
"When fewer histogram bars are used, the accuracy of a calculation of standard deviation using the grouped data formula is diminished" How s…
 updated one year ago
 No Medals Yet
Mathematics

IsTim:
Group Title
B iii. What percent is the maximum expected to be outside from Chebychev's rule?
What does this mean? This is from a graphing assignment.…
 updated one year ago
 No Medals Yet
Mathematics

IsTim:
Group Title
Calculate the mean +/ 2 standard deviations using results of the Descriptive Statistics.
This is using the MiniTab 14 Software.
What does…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

IsTim:
Group Title
Calculate the mean +/ 2 standard deviations using results of the Descriptive Statistics.
This is using the MiniTab 14 Software.
What does…
 updated one year ago
 4 replies
 1 Medal
Mathematics

IsTim:
Group Title
An ore contains 39.2 % of the mineral rutile, TiO 2, which is a source of the element Ti. How much ore must be processed in order to obtain …
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

IsTim:
Group Title
Simplify g(x+3) when g(x)=x^22x+1
 updated one year ago
 7 replies
 1 Medal
Mathematics

IsTim:
Group Title
Simple dimensional analysis: To cancel out "s" in J/S, do I multiply or divide J/s by s? s in both cases are the same.
 updated one year ago
 12 replies
 No Medals Yet
Mathematics

IsTim:
Group Title
if the solution changes colours, are the chemicals soluble?
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

IsTim:
Group Title
QUIKCHECK Is the derivative of y=x^2sin(2x) y'=2xsin(2x)+2x^2cos(2x)?
 updated 2 years ago
 6 replies
 1 Medal
Mathematics

IsTim:
Group Title
Using acidbase table, determine the Kb for the nitrite ion.
 updated 2 years ago
 8 replies
 1 Medal
Mathematics

IsTim:
Group Title
The hydroxide ion concentration in a 0.157 mol/L solution of sodium propanoate, NaC3H5O2 (aq) is found to be 1.1*10^5 mol/L. Calculate the …
 updated 2 years ago
 23 replies
 1 Medal
Mathematics

IsTim:
Group Title
Use the first principles definition to determine the 1st derivative of h(t)=2t/(t+3)
 updated 2 years ago
 29 replies
 1 Medal
Mathematics

IsTim:
Group Title
Use the first principles definition to determine the first derivative of sqrt(2x1)
 updated 2 years ago
 26 replies
 3 Medals
Mathematics

IsTim:
Group Title
For an outdoor concert, a ticket price of $30 typically attracts 5000 people. For each $1 increase in the ticket price, 100 fewer people wil…
 updated 2 years ago
 46 replies
 4 Medals
Mathematics

IsTim:
Group Title
The total cost, C, in dollars, of operating a factory that produces kitchen utensils is (x)=0.5x^2+40x+8000, where x is the number of items …
 updated 2 years ago
 10 replies
 No Medals Yet
Mathematics

IsTim:
Group Title
The total cost, C, in dollars, of operating a factory that produces kitchen utensils is (x)=0.5x^2+40x+8000, where x is the number of items …
 updated 2 years ago
 No Medals Yet
Mathematics

IsTim:
Group Title
A yogurt company estimates that the revenue from selling x containers of yogurt is 4.5x. Its cost, C, in dollars, for producing this # of co…
 updated 2 years ago
 4 replies
 4 Medals
Mathematics

IsTim:
Group Title
A yogurt company estimates that the revenue from selling x containers of yogurt is 4.5x. Its cost, C, in dollars, for producing this # of co…
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

IsTim:
Group Title
A paint store sells 270 cans of paint per month at a price $32 each. A customer survey indicates that for each $1.20 decrease in price, sale…
 updated 2 years ago
 26 replies
 3 Medals
Mathematics

IsTim:
Group Title
Ties into my previous 2 questions: What do you conclude?
http://openstudy.com/study#/updates/4fa76dd6e4b029e9dc3864f0
http://openstudy.com…
 updated 2 years ago
 16 replies
 No Medals Yet
Mathematics

IsTim:
Group Title
Solve 3^x=15 by taking the common logarithm of both sides.
 updated 2 years ago
 8 replies
 3 Medals
Mathematics

IsTim:
Group Title
Solve 3^x=15 by taking the natural logarithm of both sides.
 updated 2 years ago
 10 replies
 2 Medals
Mathematics

IsTim:
Group Title
Solve for x, correct to 3 decimal places.
1000=20e^(x/4)
 updated 2 years ago
 3 replies
 2 Medals
Mathematics

IsTim:
Group Title
Determine the equation of the tangent to the curve at a given point.
x^2+9y^2=37 (1,2)
 updated 2 years ago
 65 replies
 1 Medal
Mathematics
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