Decide whether the statement is an example of the commutative, associative, identity, inverse, or distributive property.4 ? 1 = 4
A. Identity
B. Distributive
C. Inverse
D. Commutative
Answer: A
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (9t sin t + 9 cos t)i + (9t cos t - 9 sin t))k
A. N = - 
(cos t)i - 
(sin t)k
B. N = (cos t)i - (sin t)k
C. N = (-sin t)i - (cos t)k
D. N = (sin t)i + (cos t)k
Mathematics
Graph.y = (x - 5)2 
A. 
B. 
C. 
D. 
Mathematics
Express the number in standard notation.6.53 × 105
A. 6,530,000 B. 653,000 C. 326.5 D. 65,300
Mathematics
Solve by substitution and check. x + 2y = -4 -2x + 3y = -6
A. (0, -2) B. No solution C. (1, -3) D. (2, 0)
Mathematics