Given cotA= 3/7
and that angle AA is in Quadrant I, find the exact value of cosA in simplest radical form using a rational denominator.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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

If the discriminant if a quadratic equation is 4 which statement describes the roots?