T Rectangle boards are placed around a playground that is the shape of a regular
nonagon. The angle between two consecutive boards is 40°.
AB
23
404
What is the measure of angle y?
A 50
B 180
C 140
D 40

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Will mark brainliest! ( explain the answer too, it can be one sentence)

What is the volume of a cardboard box that measures 1 inch by 5 inches by 7 inches? the volume of the cardboard is cubic inches. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to the nearest tenth, like this: 42.5