Solve the equation.
= 
A. 21.9
B. 28.5
C. 18.7
D. 43.4
Answer: C
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Lynn purchased 24 decorative stone square pavers to create a border to enclose a rectangular brick patio. Each square paver measures 1 foot by 1 foot and the smaller rectangular bricks can be cut to fit any paver border configuration.What paver border configuration encloses the most brick patio area and what is that area? Explain. One border arrangement of pavers is shown here:
Find the unit tangent vector of the given curve.r(t) = (8t cos t - 8 sin t)j + (8t sin t + 8 cos t)k
A. T(t) = - 
(sin t)j + 
(cos t)k
B. T(t) = (-sin t)j + (cos t)k
C. T(t) = (8 cos t)j - (8 sin t)k
D. T(t) = (-8 sin t)j + (8 cos t)k
Solve the system by substitution. -4x + 8y = 56 x + 7y = 49
A. No solution B. (0, 7) C. (1, 6) D. (-7, 0)
Find the measure of each marked angle.
A. 64° and 116° B. 66° and 24° C. 66° and 114° D. 68° and 112°