Find the focus and directrix of the parabola.x2 = -20y
A. (0, -5); x = 5
B. (0, -5); y = 5
C. (-5, 0); y = 5
D. (0, -5); y = -5
Answer: B
Mathematics
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Let u represent src="https://sciemce.com/media/4/ppg__ttt0701190814__f1q108g7.jpg" style="vertical-align: -17.0px;" /> 
, v represent 
, and w represent 
. Solve first for u, v, and w. Then solve the system of equations. 
+ 
- 
= 
- 
- 
= - 
- 
+ 
+ 
= 
A. 
B. (-3, 1, 8)
C. 
D. (-3, 1, -8)
Mathematics
Evaluate the expression for the given values of the variables. 
mv2
for m = 1.66 and v = -7
A. 41.67 B. 40.67 C. 16.268 D. -5.81
Mathematics
Find the part.81% of 100 animals
A. 8100 animals B. 810 animals C. 8 animals D. 81 animals
Mathematics
Graph the inequality.y < - 
x + 2
A. 
B. 
C. 
D. 
Mathematics