Solve the Problem by Using a System of Equations

question 184

Short Answer

Solve the problem by using a system of equations. The tens digit of a two-digit number is 17 less than three times the units digit. If the sum of the digits is 11, find the number.

---

Definitions:

Regression Discontinuity

Regression discontinuity identifies the causal effects of a policy or factor by looking at two samples that lie on either side of a threshold or cutoff.

Causal Effects

Causal effects refer to the change in an outcome directly attributable to a change in a factor or intervention, established through methods that isolate this relation from other variables.

Threshold

The point at which a particular effect or change occurs, often used in context of quantities or levels.

Intention To Treat

A principle used in clinical trials where all patients including those who drop out or deviate from the protocol are accounted for in the final results.