Pedro goes to the gym every eight days but tennis is every twelve days if today is september 27 when will he do both again

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given

Layla answer 21 of the 25 questions on his history test correctly.what decimal represents the fraction of problem he answer incorrectly.