You can tell if lines are perpendicular or not by seeing if meet in a right angle. A right angle is like a square, and the lines would have to be 90 degrees.
One example is when the two lines (horizontal and vertical) meet each other at the ends.
(You MUST make sure that they are directly horizontal and vertical. If not, they will either be acute or obtuse).
I hope this helped!
Answer:
-9
Step-by-step explanation:
-3x+y=-7
-3x+y-2
-7-2=-9
First multiply 180 and 25 which is 4500.
Then divide by 17 which should be approximately 264.71
Answer:
39
Step-by-step explanation:
2in:12m = 6.5in:?m
6.5 / 2 = 3.25
3.25 x 12
39
Answer:
-2.46, -10/4, 14/5, 2.5.
Step-by-step explanation: