Calculate the flux of the field F across the closed plane curve C.F = xi + yj; the curve C is the circle (x - 10)2 + (y + 4)2 = 16
A. 2?
B. 32?
C. 32? + 40
D. 0
Answer: B
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Solve the formula for the indicated variable. Then use the supplied values to solve the equation.The relationship between the distance p from an object to a lens, the distance q from the image to the lens, and the focal length f (the distance from the lens to the principal focus) is given by 
Solve for f. What is the focal length when p is 726 mm and q is 24.2 mm? (All values are approximate.)
A. f = p + q = 750 mm
B. f = pq - p - q = 16,800 mm
C. f = 
+ 
= 1.00 mm
D. f = 
= 23.4 mm
Solve the problem. Round rates to the nearest whole percent and dollar amounts to the nearest cent.The Oak Gallery had a clearance sale during which it sold an oak coffee table for $244. If the cost was $172 and the operating expenses were 25% of cost, find the amount of profit or loss.
A. $18.00 profit B. $18.00 loss C. $29.00 loss D. $29.00 profit
Perform the indicated division or state that the expression is undefined.0 ÷ (-50)
A. 50 B. 1 C. 0 D. undefined
Use the region R to evaluate the double integral.
RR bounded by y = 
, y = 
x, y = 0
A. 
B. 
C. - 
D. - 