Graph the equation.r = -1 + 2 cos ?
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.A projectile is fired with an initial velocity of 400 feet per second at an angle of 70° with the horizontal. In how many seconds will the projectile reach its maximum altitude? (Round your answer to the nearest tenth of a second.)
A. 16.6 sec B. 11.8 sec C. 8.4 sec D. 19.9 sec
Mathematics
Graph.9(x + 2)2 - 4(y + 4)2 = 36
A. 
B. 
C. 
D. 
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.4 - 4i
A. 
cis 100°, 
cis 220°, 
cis 340°
B. 
cis 60°, 
cis 180°, 
cis 300°
C. 
cis 80°, 
cis 200°, 
cis 320°
D. 
cis 100°, 
cis 220°, 
cis 340°
Mathematics
From the list below find the expression, identical for the given.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics