Prove the sum of two rational numbers is rational where a, b,c and d are integers and b and d can't be zero

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

The table shows the age and finish time of ten runners in a half marathon. identify the outlier in this data set. drag into the table the ordered pair of the outlier and a reason why that point is an outlier.

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? )