7.
in the diagram, the line segments ha and abc
represent the course of a ship which left a harbour
h at noon to sail to a and then c at a uniform
speed. ha = 12 km and hb = 20 km. zhab = 90°
and b is due west of h.
(a)
find the distance ab.
(b) find the bearing of a from h.
(c) the ship reached b at 2 p. m.
(i) find the uniform speed of the ship.
(ii) if the ship reached c at 3 p. m., find the
distance and the bearing of c from h.

Consider the graph of the exponential function y=3(2)×

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.

Ican interpret and represent the remainder in division calculations sensibly for the context (eg 27.4 in calculating average height in cm: $27.44 if it represents an amount of money) solve the following problems. 15) the wildlife park charges $25.50 dollars per person to enter their park if the park made $15096 dollars today, how many people entered the park? 16) ms adams plus 2,230 other keen runners ran a marathon: between them they ran 94817.5km. how many km did each competitor run?