From the masthead of a 180 m high ship, the angle of depression to a boat is 60°. Find the distance (in meters) from the ship to the boat
Find the value of the following expression:
\( \frac{ 4{\tfrac{1}{3}} + 3{\tfrac{1}{3}} \times 1{\tfrac{4}{5}} \div 3{\tfrac{3}{4}} \times \left( 6{\tfrac{1}{4}} \,\text{ of }\, 1{\tfrac{1}{15}} \right) } { \tfrac{2}{3} \div \tfrac{5}{6} \times \tfrac{2}{3} } \)
\(28\dfrac{1}{8}\)
\( \frac{1}{8} \)
\(289\dfrac{3}{8}\)
\(12\dfrac{1}{2}\)
Find the sum of the greatest and the smallest number which may replace k in the number 3281k6 to make the number divisible by 6.
If \( 5x - \frac{1}{4x} = 6,\; x > 0, \) then find the value of \( 25x^{2} - \frac{1}{16x^{2}} . \)