Bradley said that the expression 2.6x - (1.3x - 4.5) is equivalent to 1.3x - 4.5 is he correct if not explain his error

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

What is the perimeter of a rectangle if the length is 5 and the width is x?