which of the following best describes the change in the mean when 3 is included in the data set below? 34,75,26,81,65,38,49

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.

a. george's love for snowboarding, bungee, jumping, and whitewater kayaking has lead to a scholarship.

the answer is  

c.

14,469 cubic feet

i know this one is right