Answer:
19
Step-by-step explanation:
B is true
Step-by-step explanation:
because no number with them to lines can be a negative
Answer:
1
Step-by-step explanation:
3^0
Apply rule a^0=1 a=0
=1
Thanks for letting me help!!
Answer:
20%
Step-by-step explanation:
So, I would set this up as a proportion-
72 x
90 100
Cross multiply-
100 x 72 = 7200
Divide-
7200/90 = 80
Subtract-
100 - 80 = 20
So, it is a 20% decrease