height or altitude for a parallelogram means the perpendicular distance from one parallel side to the other. Check the picture below.
1. c
2. b
3. a
hope this helps
Answer: Tammy's sample may not be vaild because she surveyed the students only from her class and it is likely that other classes might not like the subject maths. She might get the accurate results by surveying a larger number of people in the school instead of just her class.
Answer:
the answers are B,C,D
Step-by-step explanation: