Find the value of the determinant.
A. -8
B. 8
C. 64
D. 4
Answer: B
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Find the derivative.r = 20 - ?7 cos ?
A. 
= 7?6 sin ?
B. 
= - 7?6 cos ? + ?7 sin ?
C. 
= 7?6 cos ? - ?7 sin ?
D. 
= 7?6 sin ? - ?7 cos ?
Provide an appropriate response.Assume that log 5 = 0.6690 and log 6 = 0.7782. Determine the value of log 
.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.If the sides of a square are increased by 2 meters, the area becomes 25 square meters. Find the length of a side of the original square.
A. 7 m B. 2 m C. 3 m D. 5 m
The sides of a square baseball diamond are 90 ft long. When a player who is between the second and third base is 30 ft from second base and heading toward third base at a speed of 24 ft/sec, how fast is the distance between the player and home plate changing? Round to two decimal places.
