the x component of a vector A is 5.3 units, ans its y component is -2.3 units. The angle that vector A makes with the +x axis is closest to A) 340 degrees B) 160 degrees C) 250 degrees D) 110 degrees E) 23 degrees

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

to improve her experimental investigation, dalila should add a row in which no fertilizer is used. by a having a contrasting row in which no fertilizer is used, she will have a control group that will her understand the effects of the fertilizer in the plant developments vs the development of the plant when no fertilizer is used.