(40 POINTS FOR ANSWERING) A, B & C form the vertices of a triangle. ∠CAB = 90°,

∠ABC = 64° and AB = 9.5.

Calculate the length of BC rounded to 3 SF.

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 %

Change negative exponents to positive. then solve. round to four decimal places

To start to solve the system of equations below, which number would you multiply in the equation -2x-5y=-1? the two equations are -2x-5y=-1 and 4x+2y=8