What is the name for a model that you cannot touch but gives you a mental image of how something works? a. a physical model b. a mathematical model c. a conceptual model d. a planning model

c. a conceptual model

Step-by-step explanation:

The conceptual model focuses on the highest level of abstraction and does not care to show the physical structure of an object, but rather an idea or concept that establishes a reference of how this object is or how that object works.

The conceptual model is the most natural form of the facts and are closer to the reality of the client environment. In the conceptual model the client must be involved in order to obtain the data collection that will support the construction of the entire model.

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x