The speed of light is 3 x 10 to the 8th power meters per second. If the sun is 1.5 x 10 to the 11th power meters from earth, how many seconds does it take light to reach the earth?

Answer 1

Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.

Online "^" is used to indicate an exponent, e.g., x^2 = x squared.

(1.5*10^11)/(3*10^8) = .5*10^3

When exponents are multiplied/divided their values are added/subtracted respectively.

Answer 2

500