Answer:
40
Step-by-step explanation:
1/2x - 2/5x = -2
1/10x = -2
x = -20
Answer:
can it be a fraction
Step-by-step explanation:
Answer:
Mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean.
Step-by-step explanation:
Distraibutiv peorpoty
a(b+c)=ab+ac
we have
3a+7+2(3+a)
distribute first
2(3+a)=6+2a
now we have
3a+7+6+2a
move like terms together
3a+2a+7+6
add lke terms
5a+13
