Aboat leaves a dock at 9: 00 pm and travels due south at a speed of 20 km/h. another boat has been heading due east at 15km/h and reaches the same dock at 10: 00 pm. how many minutes after 9: 00 pm were the two boats closest together? (round your answer to the nearest minute.)

22 min

Step-by-step explanation:

we need to find the closest distance between two ship.

let us take the ships meet after time t

now distance travel by first ship at any time t is given by 20t

the position of second ship is 15-15t

let us take distance between them is d

therefore

now to get the shortest distance differentiate D w.r.t time

t=0.36hr

thus at

The correct option is 3.

Step-by-step explanation:

From the given figure it is clear that the coordinates of B are (-7,2).

If triangle ABC is reflected over the x-axis, then

After that it rotated 180 degrees,

Then it reflected over the y-axis,

The coordinates of B' are (-7,2).

Therefore, the correct option is 3.