The temperature dropped 4° per hour. What is the change in temperature after 6 hours?

24°

Step-by-step explanation:

Temperature dropped per hour = 4°

Therefore,

Change in temperature after 6 hours

= 6*4

=24°

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.