Work out the height of a triangular crosse section with the volume of 35cm

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

In the diagram of circle o, what is the measure of zabc?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height