Solve.Find the equation of a line normal to the curve of 
at 
A. -6
x + 3y - 6
- ? = 0
B. -3
x + 9y - 9 + 
? = 0
C. -3
x + 3y + 3
- ? = 0
D. 
x + 3y - 
- ? = 0
Answer: C
Mathematics
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Use the substitution method to solve the system.3x - 3 = yy - 3x = 3
A. Infinitely many solutions B. (3, 3) C. (0, 0) D. No solution
Mathematics
Solve the equation.
= 5
A. {1, -9} B. ? C. {1} D. {-1, 9}
Mathematics
Simplify.
A. b5
B. b13
C. 
D. 
Mathematics
Find the probability.A couple has four children. Assuming that each child is equally likely to be a boy or a girl, find the probability that they have exactly two boys.
A. 
B. 
C. 
D. 
Mathematics