Thursday
December 12, 2013

# Posts by keisha

Total # Posts: 285

math
expand and simplify (2x+5)(3x-4)

college
Why is HC3HO considered a weak acid? Why is NaOH considered a strong base? Why is Mg(NO3)2 considered a salt?

chenistry
Calculate the molarity of the following. 45 grams of Na2SO4 dissolved to make 500 ml of solution 30 grams of C4H8O4 dissolved to make 450 ml of solution

math
the sin of theta =1/2 how do i figure out what theta is without using the calculator?

math
Can someone show me how to evaluate the integral from 0 to 5 of x/(x^2 + 4) dx ?

math
how do i evaluate the integral of the absolute value of x from -2 to 1? can someone show me? thanks.

Math
If in the set A, 3x-4 and B 2x+5, with X is an intersect between the two sets, how do i find for x?? I already know the ans is 9, but need help with the working. Do i just bring the 4 over to 5 and change the sign then add.

history
what are some acheivements on islamic scientists,astronomers, geographers and mathematications?

calculus
The functional determinant of x, e^x, and e^-x is equal to??