The school band has 8 trumpet players and 10 flute players. the ratio of trumpelers to
flutists is 4 to what number?

the answer is b

m∠abd = m∠dbc

step-by-step explanation:

given : ab bisects ∠dbc

as we know that bisection means ab divides   ∠dbc   in two equal angles named as   ∠dba and   ∠abc

so, m∠abd = m∠dbc  

because ab bisects ∠dbc.

hence , the first statement m∠abd = m∠dbc is true.

this cant be answered without the graph. you may need to add it.