X/7 = 6/4.2
4.2x = 42
x= 10
Average thickness of book = Total thickness/mo. of books
= 28 cm/ 10
= 2.8 cm
Thus, on average, each book has 2.8 cm thickness.
Answer:
on example 1, both are right triangles.
140/300=14/30
14/30=7/15
So 7/15 is _
46.6%
Answer: M < -3
.................................................
Step-by-step explanation:
4 - 3m > -5
4 - 3m > (-4 -5)
3m > -9
(3/3)m > (-9/3)
m<-3