3 + 4y – z=5
3x – 2y + 2z = 7
2x – 2= -2

)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)

Volume of cylinder with a radius of 8cm and height of 25 cm

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0