What is the value of 8 in 826140

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap