If a mirror is placed on the line PQ, then out of the

The equation of a hyperbola whose conjugate axis equals its transverse axis is:

Find the simplified value of the following expression:

(16.25 × 24 + 7 × √36) ÷ 2³ + 3.75 × 16 – 37 × 2 + 7.5

A spherical metallic shell with 6 cm external radius weighs 6688 g. What is the thickness of the shell if the density of metal is 10.5 g per cm³

The average of 26 numbers is 45. If 4 is added to each number, then the new average will be:

Suppose the average of 322, 386, 418, 499 and 'a' is 437, then ind the value of 'a'

The ratio of the outer and the inner circumference of a circular path is 5: 4. If the path is 100 meters wide, then what is the radius of the inner circle?

If x = a cos³ θ, y = a sin³ θ, then dy/dx at any θ is:

If (a + b) = 8 and ab = 10, then find the value of (a² + b²).