Answer: perpendicular lines
Step-by-step explanation:
look up "Two straight lines that intersect at a right angle"
Simplest way to do this:
number of books= 120
percentage represented by 120= 100%
increase current percent by 55%= 155%
: . 55% increase = original number of books * (155%)
= 120 * (155/100)
= 186
Answer:
a^2-ab+b^2
Step-by-step explanation:
factorize both of them.
Answer:
18
Step-by-step explanation:
Given
x - 1 = 2 ( add 1 to both sides )
x = 3
Then
2x² = 2(3)² = 2 × 9 = 18
One is 5% of 20 I believe
