Solve the problem.A building 260 feet tall casts a 50 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree)? (Assume the person's eyes are 5 feet above ground level.)
A. 79.11°
B. 11.31°
C. 78.91°
D. 78.69°
Answer: C
Mathematics
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Express the number as the ratio of two integers.0.090909 . . .
A. 
B. 
C. 
D. 
Mathematics
Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.3
+ 3i
A. 6( cos 150° + i sin 150°) B. 6( cos 30° + i sin 30°) C. 6( cos 330° + i sin 330°) D. 6( cos 60° + i sin 60°)
Mathematics
Solve.Melissa invested a sum of money at 3% annual interest. She invested three times that sum at 5% annual interest. If her total yearly interest from both investments was $5400, how much was invested at 3%?
A. $22,500 B. $202,500 C. $30,000 D. $67,500
Mathematics
Solve. Round your answer to three decimal places if necessary.41 + 2x = 64
A. -1 B. 1 C. 16 D. 4
Mathematics