Solve. Give an exact answer unless indicated otherwise.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 an answer in degrees to the nearest hundredth.
A. 0.46°
B. 0.92°
C. 0.64°
D. 89.54°
Answer: A
Mathematics
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Divide using long division.
A. 5x2 + 5x + 4 B. x2 - 5x - 4 C. 5x2 + 4 D. x2 + 5x + 4
Mathematics
Solve the problem.In a chemistry class, 7 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 4.5 L B. 2.5 L C. 7.0 L D. 3.5 L
Mathematics
Solve.4z - 2 = 3z - 20
A. -22 B. 18 C. 22 D. -18
Mathematics
Identify whether the equation is a linear equation in one variable. Answer "is" or "is not."
+ 16x = 5
A. is not B. is
Mathematics