Which equation can be used to find the value of b if side a measure 8.7 cm

How to solve a simultaneous equation involved with fractions?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction