Find the measure of each marked angle.
A. 69° and 69°
B. 69° and 21°
C. 78° and 78°
D. 69° and 111°
Answer: A
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Solve the problem.Find the centroid of the region in the first quadrant bounded by the curve y = 11 cos x and the axes.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Solve the problem.A 10-pound weight stretches a spring 3 inches. The 10-pound weight is replaced by a 16-pound weight, and the system is allowed to come to equilibrium. The 16-pound weight is then raised 3 feet and released with an initial velocity of 5 feet per second downward. Find the equation of motion. Neglect friction.
A. y = 3 cos 8.944t + 3 sin 8.944t B. y = -3 cos 8.944t + 0.559 sin 8.944t C. y = -3 cos 2.582t + 1.936 sin 2.582t D. y = 3 sin 8.944t + 0.559 cos 8.944t
Solve.A mason is building a drystack stone wall that is 3 feet high. If each stone is 4 inches high, how many rows of stone will the wall contain? (1 foot = 12 inches)
Fill in the blank(s) with the appropriate word(s).
Rewrite using numbers and an inequality symbol.Three is less than five.
A. 0 < 5 B. 3 < 5 C. 3 > 5 D. 5 < 3