Regina G.

The coordinates are A = (0,0); B = (4,0); and C = (4,2). I need help finding the coordinates of the orthocenter. I have looked on YouTube but I'm not completely understanding. Any help would be... more

Biology is very difficult please explain.

a) f(x)= sqrt(x2-25)   b) g(x)= sqrt(5-x)/x2+x+30)   c) h(x) = -3x/sqrt(x)-4

Use the formula A=P ( 1+ r/n)nt  to solve the compound interest problem    Find how long it takes a $1700 investment to earn $500 interest if it is invested at 7% compounded quarterly.   $500... more

Find how long it takes $2000 to double if it is invested at 7% interest compounded semiannually. Use the formula   A=P  (  1- r/n) nt  to solve the compound interest problem   It will take... more

Simplify this answer.  That is what it says in my math book.   

If AgNO3 solution is added to a solution containing Br- ions until the silver ion concentration is 8.17 x 10-5, what is the Br- ion concentration? The Ksp for AgBr is 5.2 x 10-13

Theoretically let's say that both Thermoproteus and T. denitrificans can grow aerobically, using oxygen as a final electron acceptor, while continuing to use H2 and H2SO3 as their electron donors,... more

I am trying to find the absorptions and chemical shift of an unknown arene?

Has anyone performed an experiment demonstrating that protein synthesis can be performed starting from inorganic materials ? The assumption is one could perform a version of the Urey-Miller... more

why are the structures of some cells in the body different from one another

A Susan B Anthony Dollar has a radius of 0.52 inches and a thickness of 0.0079 inches. Round the answers to the nearest ten thousandth: a) circumference of the coin b) area of one face of the... more

this is a reseach method  question

How do you describe the properties of the diagonals of a parallelogram.