If y varies inversely as x, find the inverse variation equation for the situation.y = 60 when x = 5
A. y = 12x
B. y = 
C. y = 
D. y = 
Answer: C
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Find the magnitude and direction angle of the vector v. Round the direction angle to the nearest tenth of a degree when necessary.v = 5(cos 101°i + sin 101°j)
A. 25, 79°
B. 5, 101°
C. 5, 79°
D. 
, 101°
Solve the problem.Find the area A and circumference C of a circle of diameter 18 in.. Use 3.14 for ?. Round the result to the nearest tenth.
A. A = 1017.4 in.2; C = 28.3 in. B. A = 113 in.2; C = 28.3 in. C. A = 254.3 in.2; C = 56.5 in. D. A = 56.5 in.2; C = 56.5 in.
Solve the problem.On a recent trip, Sarah's car traveled 20 mph faster on the first 100 miles than it did on the remaining 80 miles. The total time for the trip was 4 hr. Find the speed of Sarah's car on the first part of the trip.
A. 26 mph B. 36 mph C. 9 mph D. 56 mph
Find the general term of the arithmetic sequence then find the indicated term of the sequence. Assume that the domain of the sequence is all natural numbers.Find an and a21.
A. an = n + 2; a21 = 23 B. an = 4 - n; a21 = -17 C. an = n - 4; a21 = 17 D. an = n + 3; a21 = 24