Simplify.211 ÷ 24 ? 25 ÷ 22
A. 512
B. 16
C. 1024
D. 1
Answer: C
Mathematics
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Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
, where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 71 watches B. 33 watches C. 35 watches D. 40 watches
Mathematics
Replace the polar equation with an equivalent Cartesian equation.r2 + 2r2 sin ? cos ? = 100
A. x + y = ±10 B. x2 + 3y2 = 100 C. x2 + y2 = 100 D. x + y = 10
Mathematics
Determine if the given ordered triple is a solution of the system.(-3, 1, 3) x + y + z = 1 x - y + 2z = -44x + y + z = 10
A. solution B. not a solution
Mathematics
Find the exact value of the expression if ? = 60°. Do not use a calculator.g(?) = sin ?Find [g(?)]2.
A. 
B. 1
C. 
D. 
Mathematics