Write three million five hundred twenty six thousand two hundred forty five in standard form

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points