A random sample of dogs at different animal shelters in a city shows that 12 of the 65 dogs are puppies. The city's animal shelters collectively house 1,690 dogs each year. About how many dogs in all of the city's animal shelters are puppies?

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Determine the area of a triangle with (see picture below)

Can anyone explain to me how to do this? anything will .