Solve the problem.The range r of a projectile is given byr = 
v2 sin 2?,where v is the initial velocity and ? is the angle of elevation. If r is to be 
and 
what must the angle of elevation be? Give your answer in degrees to the nearest hundredth.
A. 0.25°
B. 89.82°
C. 0.36°
D. 0.18°
Answer: D
Mathematics
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Solve the problem.?ABC is similar to ?DEF. If AB = 5 inches, AC = 13 inches, and DF = 91 inches, find the length of DE.
A. 49 inches B. 35 inches C. 236.6 inches D. 18.2 inches
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Determine whether the given linear equations are parallel, perpendicular, or neither.-x + 
y = 
x - 
y = 
A. parallel B. perpendicular C. neither
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Simplify. Your answer should be in lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Divide. Express your answer in standard form.
A. -9 - 8i B. 8 - 9i C. -9 + 8i D. 225 - 200i
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