(opposite angles in a parallelogram)
(subtraction)
(angles in a triangle add to 180 degrees)
(adjacent angles in a parallelogram are supplementary)
(subtraction)
(angles in a triangle add to 180 degrees)
(angles on a straight line add to 180 degrees)
Answer:
40
Step-by-step explanation:
Answer C is correct because 2×(4×305) is the same as (2×4)×305 and 2×4=8.
Answer:

Step-by-step explanation:
