The height, H cm, of a table is measured as 72 cm correct to the nearest centimetre.
Complete the following statement to show the range of possible values of H.

Solve the equation by completing the square. x^2+2x=17

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21