36
63
47
81
Correct answer is D
M∝N ; M∝1√P.
∴
M = \frac{k N}{\sqrt{P}}
when M = 3, N = 5 and P = 25;
3 = \frac{5k}{\sqrt{25}}
k = 3
M = \frac{3N}{\sqrt{P}}
when M = 2 and N = 6,
2 = \frac{3(6)}{\sqrt{P}} \implies \sqrt{P} = \frac{18}{2}
\sqrt{P} = 9 \implies P = 9^2
P = 81
Evaluate 21.05347 - 1.6324 x 0.43 to 3 decimal places ...
If m = 3, p = -3, q = 7 and r = 5/2, evaluate m(p+q+r) ...
Find the median of the following set of scores: 65, 72, 55, 48, 78 ...
In the diagram, PO and OR are radii, |PQ| = |QR| and reflex < PQR is 240o. Calculate the value x...
Triangle OPQ above is the solution of the inequalities ...
If \begin{vmatrix} 2 & 3 \\ 5 & 3x \end{vmatrix} = \(\begin{vmatrix} 4 & 1 \\ 3 &...
Evaluate, using logarithm tables \frac{5.34 \times 67.4}{2.7}...
In triangle PQR, PQ = 1cm, QR = 2cm and PQR = 120o Find the longest side of the triangle...