Find the exact value. If the value of the function is not defined, write undefined.sin 270°
A. -1
B. 
C. Undefined
D. 0
Answer: A
Mathematics
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Find the y-intercepts for the parabola whose equation is given. If the y-intercepts are irrational, round your answers to the nearest tenth.y = -x2 + 19x - 90
A. y-intercept (0, -9) B. y-intercept (0, 90) C. y-intercept (0, 9) D. y-intercept (0, -90)
Mathematics
Find the second derivative of the function.y = 
A. 
= 
- 
+ 
B. 
= - 
+ 
- 
C. 
= 
+ 
- 
D. 
= 
+ 
- 
Mathematics
Determine whether S defines a function.S = {(-6, 9), (-6, -7), (2, 7), (4, -7), (10, 1)}
A. Yes B. No
Mathematics
Find the solution set for the system by graphing both of the system's equations in the same rectangular coordinate system and finding points of intersection.x = (y + 10)2 - 1(x - 10)2 + (y + 10)2 = 1 
A. {(-1, -10)} B. {(-1, -10), (10, -10)} C. {(10, -10)} D. ?
Mathematics