20 * (31/100) = 21*0.31=6.51
20.00-6.51=13.49
Caleb paid $13.49
Answer:
yes 18 24 and 30 does form a right triangle
No. It's rather simple, down to addition. Ask yourself, what does 6 + 8 equal? 6 + 8 = 14. Now is this an odd number? No, 14 is an even number.
I hope this helps! If not I'm sorry.
Answer:
Answer is option 2) pi/3
Step-by-step explanation:

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1. Divide both sides by 4 = 1/2
2. Divide both sides by 4 = 1/3
3. Divide both sides by 3 = 1/3
4. Divide both sides by 2 = 1/2
5. Divide both sides by 3 = 4/5