Perform the indicated operation. Express your answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the curvature ? for the given function.r(t) = -3i + (10 + 2t)j + (t2 + 4)k
A. ? = - 
B. ? = 
C. ? = 
D. ? = 
Mathematics
Evaluate the determinant.
A. 18 B. 8 C. -18 D. -28
Mathematics
Find the LCD. Do not combine fractions.
, 
A. 10 B. x C. x - 7 D. x(x - 7)
Mathematics
Use a system of linear equations to solve the problem.Devon purchased tickets to an air show for 8 adults and 2 children. The total cost was 
. The cost of a child's ticket was 
less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket.
A. adult's ticket: $15; child's ticket: $11 B. adult's ticket: $12; child's ticket: $8 C. adult's ticket: $14; child's ticket: $10 D. adult's ticket: $13; child's ticket: $9
Mathematics