So each book is an average of 2.8 cm
so 120 divided by each book=number of books
120/2.8=42.85
round down since you can't fit .85 of a book on a shelf
the answer is 42 books
X+y=6
2x+y=4
solve the both
x+y=6
- (2x+y=4)
-x = 2
x=-2
substitute the value of x in x+y=6
-2+y=6
y=6+2
y=8
therefore the answer is (-2,8)
Answer:
74 inches
Step-by-step explanation:
P = 1/2(b1+b2)h
= 1/2(15+22)4
= 1/2(37)4
= 1/2(148)
= 74'
17+27
simplify the parenthesis
