In the figure below, solve for β (beta, top left angle). β = _ degrees (round answer to the nearest tenth and do NOT include units in your answer)

In a box lenght 1m breadth 60 cm and height 40 cm small rectangular packets of dimension 5 cm into 8 cm into 10 cm are packed. how many such small packets can be packed in the big box?

Explain why the factor 1.5 is broke. into two numbers in the model.

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?