John, twelve years old, is three times as old as his brother. how old will john be when he is twice as old as his brother

Maddie's rectangular kitchen has an area of 10 square yards and a length of 3 3/4 yards.how many yards wide is maddie's kitchen?

How can you use synthetic substitution to tell whether a given binomial is a factor of a polynomial?

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected