Which of the following is a reasonable estimate for the number of centimeters in a kilometer? A. 1 × 10-3 cm B. 1 × 10-5 cm C. 1 × 105 cm D. 1 × 103 cm

C 1*10^5

Step-by-step explanation:

There are 10^2 cm in a meter, and 10^3 meter in a kilometer, so there are 10^2 * 10^3 = 10^5 cm in a kilometer

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c