Name the property of equality or congruence that justifies going from the first statement to the second statement.

m a = m s and m s = m k, then m a = m k

See below.

Step-by-step explanation:

That is the Transitive Property of congruence / equality. The m A and  m K are both equal to the m S , so m A = m K.

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42