Find two numbers that round to 15.5 when rounded to the nearest tenth

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap