usethisemailforanyth usethisemailforanyth 23-10-2020 Mathematics contestada If ∠7 = -7x2 + 6y + 5, m∠4 = -9x + 3x3 - 4y, and m∠5 = 6y°, find the sum of ∠6 and ∠1. Accurate to 3 decimals. I need help please this is hard for me
