Answer:
1cm = 320 km?
Step-by-step explanation:
Answer:
cosA = 
Step-by-step explanation:
cosA =
=
= 
SA: 2xLxW + 2xWxH + 2xLxH
SA: 2x4.5x20 + 2x4.5x23 + 2x20x23
SA: 180 + 207 + 920
TSA: 1307cm2 (squared)
The lines are perpendicular because the slopes are negative reciprocals of eachother.
Answer:
if you are looking for an equation then it is y = -3x – 3
Step-by-step explanation: