Solve.
The drawing shows the end of a building that is to be bricked. If the area of the side of a brick used is 
find the number of bricks needed to completely cover the side of the building.
A. 1600 bricks
B. 25 bricks
C. 200 bricks
D. 1920 bricks
Answer: A
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If the number in the sentence is in scientific notation, convert it to decimal notation. If the number in the sentence is in decimal notation, convert it to scientific notation.It has been estimated that the average American watches 58,240 hours of television in a lifetime.
A. 58.24 × 103 hours B. 5.824 × 104 hours C. 5.824 × 105 hours D. 5.824 × 103 hours
Find the exact value of the expression.cos (-390°)
A. - 
B. 
C. - 
D. 
Solve the system of equations by elimination.
A. x = -6, y = 15; (-6, 15) B. x = -15, y = 5; ( -15, 5) C. x = -15, y = 7; (-15, 7) D. x = 15, y = -6; (15, -6)
Find the exact value of the trigonometric expression without the use of a calculator.sin 15° cos 105° + cos 15° sin 105°
A. 
B. - 
C. 
D. - 