Find the standard form of the equation of the parabola with the given characteristics.
?
Focus: 
; directrix: 
?
A. 
B. 
C. 
D. 
E. 
Answer: D
Mathematics
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Use the given information to find the exact value of the trigonometric function.sec ? = 4; The terminal side of ? lies in Quadrant I.
Find cos 
.
A. 
B. 
C. 
D. 
Mathematics
Write the complex number in the form a + bi.8(cos 30° + i sin 30°)
A. 4
+ 4i
B. 4 + 4
i
C. 
+ 
i
D. 
+ 
i
Mathematics
Find the area of the figure using determinants.
A. 11.5 B. 12.0 C. 12.5 D. 11.0
Mathematics
Use the verbal description to write a formula for f(x). Then evaluate the function as indicated.Multiply the input by 4 and subtract 7 to obtain the output. Find f(-3).
A. f(x) = 4x + 7; -5 B. f(x) = -4x - 7; 5 C. f(x) = 4x - 7; -19 D. f(x) = -4x + 7; -18
Mathematics