Find the indicated matrix product or state that the product is undefined.A = 
, B = 
AB
A. 
B. 
C. 
D. 
Answer: B
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Find the potential function f for the field F.F = 
i + 
j - 
k
A. f(x, y, z) = 
+ ln z + C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = 
+ C
Solve the equation by using the quadratic formula.x2 - 8x + 16 = 0
A. {-4} B. {-4, 4} C. {4} D. {-4, 0}
Translate the phrase into an arithmetic expression and calculate by hand.38 more than 67
A. 67 + 38 = 95 B. 67 + 38 = 104 C. 67 + 38 = 106 D. 67 + 38 = 105
In calm waters, the oil spilling from the ruptured hull of a grounded tanker spreads in all directions. Assuming that the polluted area is circular, determine how fast the area is increasing when the radius of the circle is 20 ft and is increasing at the rate of 1/6 ft/sec. Round to the nearest tenth if necessary.
What will be an ideal response?