Take 30 and divide it by .2
You will get 150 books
Answer:
x = -2
Step-by-step explanation:
y = -3x + 2.5
if y = 8.5 then:
8.5 = -3x + 2.5
-3x = 6
x = -2
Answer:

Step-by-step explanation:

Ok, so rembmer some basica exponential rules and some fraction rules
(ab)/(cd)=(a/c)(b/d)
and

so
A cardinal number of a set is the number of elemenents it contains. Therefore the cardinal number of A is equal to 5.