One window washer starts at 21 ft. high, rising 8 inches per second. the other window washer starts at 50 ft. high, descending 11 in. per second. how long does it take for the two window washers to reach the same height?

the answer is c. 23/3

6 and 24

step-by-step explanation:

6 x 4 = 24

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: