6divided by the sum of 4 times x and 5 times k

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?