Answer:
15
Step-by-step explanation:
Since 30 and 45 are relatively small numbers, it's not a big deal to list every single one of their common factors.
Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 45: 1, 3, 5, 9, 15, 45
Now that we have a list, it's easy to see which number is the highest common factor, which is, of course, 15.
HCF of 30 and 45 is 15.
Factors of 30 : 1, 2, 3, 5, 6, 10, 15, 30.
Factors of 45 : 1, 3, 5, 9, 15, 45.
Common Factors : 1, 3, 5, 15
Highest Common Factor : 15
81 feet squared
9^2 = 81
Answer:Obtain a systematic sample by selecting every 20th vehicle that passes (in any lane and going in any direction).
Answer: Choice A. 338 meters
tan(31°)=203/x
1134
=1134.114948
