Solve the problem.A brick staircase has a total of 19 steps The bottom step requires 141 bricks. Each successive step requires 5 less bricks than the prior one. How many bricks are required to build the staircase?
A. 1,776.5 bricks
B. 3,648 bricks
C. 1,824 bricks
D. 3,534 bricks
Answer: C
Mathematics
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Perform the indicated operation.
A. x2 + 9 B. x - 48 C. x3 - 48 D. x + 9
Mathematics
Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.4
? 2
A. 11 B. 6 C. 8 D. 12
Mathematics
Find the weighted mean. Round to the nearest tenth.
A. 23.9 B. 27.3 C. 23.3 D. 7.1
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics