si

Most popular questions and responses by si

gk bisects

2. 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 x-axis over the given interval. g(x) = 2x^2 − x − 1, [3, 5], 4 rectangles __ < Area < __

3. 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?

4. 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

5. Calculus

Find the x coordinate of the absolute maximum for the function f(x)= (2+6lnx) / x? x>0 xcoordinate of abs max is?

6. 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

7. 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 ][5-e^x]/ [5+e^x]^3

8. 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

I need help with this problem. (b+7)(b+1) .

10. 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?

11. 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.

12. 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?

1. math

4 1/6

posted on October 6, 2015
2. Calculus

Hmm, I tried e but it wasn't right.

posted on April 9, 2010
3. 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
4. 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
5. 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
6. 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