A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 47 and 52 minutes. Find the probability that a given class period runs between 50.5 and 52 minute

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.

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.