Find the curvature of the curve r(t) = 2ti+6tj+9k.
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d. 0
Mathematics
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Solve the right triangle shown in the figure. 
?A = 45°, 
= 8
cm, ?C = 90°
A. 
= 4
cm, ?B = 45°, 
= 4
cm
B. 
= 16 cm, ?B = 45°, 
= 16 cm
C. 
= 8 cm, ?B = 45°, 
= 8 cm
D. 
= 4
cm, ?B = 45°, 
= 4
cm
Mathematics
Find the inverse of the invertible matrix.
A. 
B. 
C. 
D. 
Mathematics
Find f(x) and g(x) so that the given function h(x) = (f ? g)(x).h(x) = (8 - 7x3)2
A. f(x) = 8 - 7x3; g(x) = x2 B. f(x) = x2; g(x) = 8 - 7x C. f(x) = 8 - 7x2; g(x) = x3 D. f(x) = x2; g(x) = 8 - 7x3
Mathematics
Solve the problem.Liz ran 36 mi, 10 mi, and 18 mi during three weeks. How many miles must she run the fourth week to give her an average of 20 miles per week?
A. 20 mi B. 21.3 mi C. 21 mi D. 16 mi
Mathematics