si
Most popular questions and responses by si
geometry
gk bisects
asked on September 26, 2010 
Calculus
Use left and right endpoints and the given number of rectangles to find two approximations of the area of the region between the graph of the function and the xaxis over the given interval. g(x) = 2x^2 − x − 1, [3, 5], 4 rectangles __ < Area < __
asked on March 20, 2018 
fiance
suppose the interest rate is 8% APR with monthly compounding. What is the present value of an annuity that pays $90 every 6 months for 5 years?
asked on October 24, 2010 
Calculus
Find the average or mean slope of 2x^3  6x^2  90x +3 on the interval [6,10]? By the Mean Value Theorem, we know there exists at least one c in the open interval ( 6 , 10 ) such that f'( c) is equal to this mean slope. ::>> I already found the mean
asked on April 9, 2010 
Calculus
Find the x coordinate of the absolute maximum for the function f(x)= (2+6lnx) / x? x>0 xcoordinate of abs max is?
asked on April 9, 2010 
physics
A 32 kg girl runs up a flight of stairs that is 30 m high. How much work does this require? Not sure how to even start
asked on March 3, 2018 
Calculus
Find the interval of concavity for f(x)=e^x/(5+e^x)? f'=[5*e^x ]/ [5+e^x]^2 & f"=[5*e^x ][5e^x]/ [5+e^x]^3
asked on April 12, 2010 
pre calc
the graph of y=1/2 x+5 +3 can be obtained from the graph of y= x by which transformations what is the horizontal shift by what factor is the graph stretched or shrunk vertically and how is it reflected
asked on September 11, 2012 
10th grade
I need help with this problem. (b+7)(b+1) .
asked on August 23, 2010 
Math
Waddell Mountains have a species of bird that hatches two new birds each week. Currently, there are 7 birds. Write a function representing this growth? What is the domain and range of the graph?
asked on February 15, 2016 
Algebra
Hi,I have a linear model with equation p = 5.1t  28, where p is the number of breeding pairs of birds and t is the year. I need to use algebra to find the year in which the linear model predicts the breeding pairs will exceed 500. Any help appreciated.
asked on July 15, 2010 
Chem
Bob Pursley, With regards to a question posted by john on Tuesday, January 30, 2007 at 6:14am: How is it that you used 650 degrees C + 273 K when the question asks to presume it stayed gaseous down to 0 degrees C and to use this 0 degrees C for the answer?
asked on February 4, 2007

math
4 1/6
posted on October 6, 2015 
Calculus
Hmm, I tried e but it wasn't right.
posted on April 9, 2010 
Calculus
I meant 2+6ln(x) divided by x. I don't know if that's what you were thinking or different?
posted on April 9, 2010 
History
hi evelyn, you might try looking up "history of player piano" on google. i found a lot of great reference material there. hope this helps si
posted on March 31, 2009 
math
hi janice, don't know if this is ok to post here, but you might try "googling" "geometric shape names". there are a lot of great resources out there. hope this helps si
posted on March 31, 2009 
math
hi anthony, hint first. try figuring out separately how many girls, then how many big cats, and then how many little cats. obviously each girl has 2 legs and each cat 4 legs. i get a few more than 42 legs on the bus i get 7 girls, 7x7bookbags=49 book bags
posted on March 31, 2009