Jupiter is 6.3 x 10^8 (630 million kilometers) from Earth. Calculate how long it would take to reach jupiter if you traveled at? A) 100 km/h (freeway speed);
B) 1,000 km/h (jetliner speed);
C) 40,000 km/h (rocket speed);
D) 3.0 x 10^8 km/s (speed of light).

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."