Two ships are near a buoy in the open ocean. one ship is 20 km due north of the buoy, and the other ship is 13.5 km due east of the buoy.

enter a number in the box to correctly complete the statement. round the answer to the nearest tenth.
the distance between the two ships .

Lines p and q intersect. find the value of b. show your work. cite any theorems you use.

Find the gradient of f(x, y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.