(11 × 5) × 8

which of the following is equal to the expression listed above?
a.
(11 × 5) × (5 × 8)
b.
11 × (5 × 8)
c.
8 × 11 + 8 × 5
d.
(11 × 5) + 8

B

Explanation:

Because (11 × 5) × 8 is the same as 11 × 5 × 8 so it doesn't matter if you have the parentheses or not in this equation and if you do you can put them anywhere it will still come out to the same answer

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.