Two cars are driving away from an intersection in perpendicular directions. the first car's velocity is 7 meters per second and the second car's velocity is 3 meters per second. at a certain instant, the first car is 5 meters from the intersection and the second car is 12 meters from the intersection. what is the rate of change of the distance between the cars at that instant (in meters per second)?

a).71/13
b).99/13
c).13
d). 56

3; 9 is 8 to -4

step-by-step explanation:

345

step-by-step explanation:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.