Find the perimeter of the window. Round your answer to the nearest tenth

The sum of two numbers is 86, and their difference is 20. find the two numbers

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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