if the mass if an unknown substance is 5.3 grams and the volume is 2 cm 3 what would be its density (round to the nearest tenth)

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Bis the

They both go downwards and the can break apart rocks 

Ive had this before. your answer would be d. hope this ya