Statisticians for a roadside assistance company interviewed 50,000 randomly selected United States (US) households. Of those, 15,595 reported that they had traveled 50 or more miles from home between December 23 and January 4. If there are 115,000,000 US households, approximately how many of them do the interviews suggest traveled 50 or more miles from home at that time?
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Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %