Froggy loves to sit on lily pads and sun himself. when froggy came to the pond there was only one lily pad. the number of lily pads doubled each day. after 40 days, the lily pads completely covered the surface of the pond. how long did it take the pond to be half covered?

20335+282=20617

step-by-step explanation:

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.