Answer:
Always
Step-by-step explanation:
The definition of a perpendicular line is that it intersects another at a 90 degree angle. Using this, by verticals, the opposite corner angle must also be 90-degrees, and since one side of a line is 180 degrees, 180-90 = 90, which ensure the rest of the angles will be 90 degrees too.
To find the discount, multiply 60 by .2, which is 12. Now subtract 12 from 60. The trousers should cost $48 now because the cost has been reduced by 20% of 60, which is $12.
Answer:
1. true 2. true 3. false 4. true 5. false 6. false 7. false
Step-by-step explanation:
im not a 100% sure this is right but ik some that are right im just not sure about 3. and 5. so ye UWU
