A carpet company charges $4 per square foot plus a $100 installation charge. Write an expression for the total cost of x square feet of carpet.

the diameter is 16 cm. are you a teacher?

step-by-step explanation:

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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.