Step-by-step explanation:
sorry but i need points Thank you
Answer:
a constant is a data item whose value cannot change during the program execution just as its name implies that the value is constant a variable is a data item whose value can change during the program's execution . Thus as its name implies the the value can vary
15 is 16.66666 percent of 90.
Two hours earlier than the appointment start time, so he should get up at 6:45am, at latest.
