Answer:
15
Step-by-step explanation:
The sides add to 63, so:

Answer:
0
Step-by-step explanation:
It is not permissible for the denominator of a fraction to equal zero.
Set 9y = 0
y = 0
Answer:
Ty, you too!
Step-by-step explanation:
Hope you have a good day.
<span>Stress that all the relationships are multiply or divide (not add or subtract). Stress that the same operations are done on both sides. Stress that the directions of the arrows are important. Acknowledge that there are several different correct ways to solve ratio problems.</span>
Answer:
In statistics and econometrics, the first-difference (FD) estimator is an estimator used to address the problem of omitted variables with panel data. It is consistent under the assumptions of the fixed effects model. In certain situations it can be more efficient than the standard fixed effects (or "within") estimator.
First differences are the differences between consecutive y-‐values in tables of values with evenly spaced x-‐values. If the first differences of a relation are constant, the relation is _______________________________ If the first differences of a relation are not constant, the relation is ___________________________