Discover Questions

If you write 70,000 in scientific notation the coefficient will be 70 true or false? What are the laws of probability? How do I use de Moivre's formula to evaluate (cos pi/7 + i sin pi/7) ^7 in cartesian form? The function f is f(x)= (x+4)(x-a), the graph of f is a parabola , a is const. The x coord. is b/w 1 and 3, which is a?
A. -2
B. 1
C. 5
D. 9? Why does the body need internal systems why can't it be just a holographic projection of light?