What is 6.15 expressed as a fraction? 123/80 123/20 20/123 80/123

)a smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). what is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5