Find the specified minor and cofactor for the matrix A.M11 and A11 if A = 
A. M11 = 24 and A11 = 24
B. M11 = 24 and A11 = - 24
C. M11 = 23 and A11 = 23
D. M11 = -23 and A11 = -23
Answer: A
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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.A vertical right circular cylindrical tank measures 
high and 
in diameter. It is full of oil weighing 
How much work does it take to pump the oil to a level 
above the top of the tank? Give your answer to the nearest ft ? lb.
A. 862,556 ft ? lb B. 729,855 ft ? lb C. 1,725,111 ft ? lb D. 718,796 ft ? lb
Complete the graph by shading the correct region.x + 4y ? -5
A. 
B. 
C. 
D. 
Solve the system by the substitution method or the addition method.
A. 
B. (5, -2)
C. (3, -5)
D. (-4, 10)