Mathematics, 05.10.2020 14:01 Globug1144

Rayna is building a tapered staircase using bricks. The bottom stair is 45 bricks wide, and the top stair is 15 bricks ft wide. Each stair is 2
bricks shorter than the one below. What is the total amount of bricks
Rayna needs to build the staircase? Type the total amount of bricks.

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Rayna is building a tapered staircase using bricks. The bottom stair is 45 bricks wide, and the top...