Together, Mary and John had $19.73
Answer:

Step-by-step explanation:
The domain of a function
is all
value for which the function is defined.
In
we have to choose our values of
such that the square root is not negative because then
will be a complex number; therefore for
,
is defined and so
is he domain of the function.
Answer:
5x =10
Step-by-step explanation:
Answer:
A significant correlation means that there is a significant (in a statistical point of view) correlation between two things.
Then a significant correlation means that we have a (measurable) correlation between the variables in our experiment.
Now, the factors are the variables that experimenters control during an experiment in order to determine their effect on the response variable, then having a positive correlation between two factors, means that when we change one, the other is also affected by the change in the first one.
Then the statement is true.