Question

I dont know the difference in the answers as far as the brackets go so could someone tell me the answer?

Answer 1

The domain of the function in interval notation is (-1, 5], which is the second option

• (-1, 5]

The steps used to find the domain of the function are as follows;

The domain is the set of the possible x-values of a function. The function in the question is shown in the graph

The x-values are the values of the function describing the relative horizontal spatial location of the values describing the function

The range can be described by the values with the horizontal stretch of the function. The values in the left and rightmost reach of the function in the graph are; (-1, 5), and (5, 5)

The value in the left end is marked by an open circle, indicating that the function is not defined at (-1, 5), or the point (-1, 5) is excluded from the values of the function such that the domain is represented in interval notation using a left parenthesis on the left

The value on the rightmost part is (5, 5), marked with a closed or shaded circle, indicating that (5, 5) is a value of the function, therefore, the domain is represented by a square bracket on the right, to get the domain in interval notation ad (-1, 5]

Answer 2

The question involves understanding unit conversions between meters and millimeters and interpreting numerical answers in mathematics. Converting 7 meters to millimeters results in 7000 mm, indicating both measurements are equal. Numerical answers may be given as ranges to guide students' understanding without providing precise answers.

Step-by-step explanation:

The question appears to be related to unit conversion in mathematics, specifically converting between different units of length, such as meters (m) and millimeters (mm), and understanding numerical answers in different contexts. For the first part, comparing 7 meters to 7000 millimeters, we must know that 1 meter is equivalent to 1000 millimeters. Thus, 7 meters is equal to 7 * 1000 mm, which is 7000 mm. Therefore, 7 m is the same length as 7000 mm.

When discussing numerical answers, sometimes they are provided as ranges or guidelines to encourage students to find the precise answer themselves. This helps ensure that students are on the right track but does not reveal the exact answer, thereby discouraging shortcuts. In certain cases, numerical answers may be more about the process of calculation than the exact figure, especially if the precise number has little impact on the overall understanding or outcome of a problem.

In summary, the main objective when dealing with unit conversions or numerical answers is to apply the correct mathematical principles and understand the context of the question to arrive at the most appropriate answer.