Answer:
-4
Step-by-step explanation:
('+')('-') = ('-')
Therefore,
(+2)(-2) = (-4)
Answer: AC = 7√3
tan 30° = 
=> 
Step-by-step explanation:
Density=mass/volume
given mass=120g and volume=200cm3
density=

or abot 0.6
the density is
Answer: 8x
Step-by-step explanation: add it normally but carry the x