In the scale used on a blueprint,1/4 inch represents 2 feet. On a blueprint what is the length of a room with an actual length of 20 feet?

1. what is the measure of ∠abc? what is the measure of ∠abd?

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

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry