Answer:
A vector is a quantity that has both magnitude and direction. DEF: A scalar is a quantity that has magnitude but NO direction.
Explanation:
Answer: The engine size
Explanation:
Explanatory variable is a type of independent variable, but it may not always be independent. It is varied to determine its effect on the response variable. In this case, to establish a relationship between gas mileage of cars and the engine size, one will want to predict the average gas mileage for various engine size. Therefore, the engine size is the explanatory variable while the gas mileage is the response variable.
Both matter and energy can eneter and exit an <span>Open System only. A.</span>