A 24.8 cm tall object is placed in front of a lens, which creates a
-3.09 cm tall image. What is the
magnification?
(Mind your minus signs.)
(Unit = cm)
(all the other answer are wrong)

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].