If angle∠ a and angle∠ b are supplementary angles and angle∠ a is eighteight times as large as angle∠ b, find the measures of angle∠ a and angle∠ b.

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)

Which of the following circles have their centers in the third quadrant? check all that apply.

How do u write a function for the reflection across the y axis