Who won the race between the two balls of string?

they were tied

Step-by-step explanation:

they both won bc force (or only one could winbc pushing faster)

Step-by-step explanation:

hope this helps

7.3

step-by-step explanation:

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