Determine the reference angle for the given angle.? = -67°

A. 157°
B. 67°
C. 23°
D. 113°


Answer: B

Mathematics

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Use the given information to find the unknown length represented by the variable x.A rectangle with a perimeter of 256 feet    x

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Find the zero of the linear function.f(x) = 11 - x

A. -22 B. -11 C. 11 D. 1

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Solve the problem.A photographer points a camera at a window in a nearby building forming an angle of 42° with the camera platform. If the camera is 52 m from the building, how high above the platform is the window, to the nearest hundredth of a meter?

A. 57.75 m B. 0.9 m C. 46.82 m D. 1.11 m

Mathematics

Solve the problem.Three different high schools plan to order the same three text books. School A plans to order 90 of book 1, 20 of book 2, 80 of book 3. School B plans to order 60 of book 1, 20 of book 2, 20 of book 3. School C plans to order 80 of book 1, 100 of book 2, 70 of book 3. The cost of book 1 is $15 per copy, the cost of book 2 is $20 per copy, and the cost of book 3 is $25 per copy. What matrix product displays the cost to each school of buying the textbooks? Display the two matrices which must be multiplied and their product. 

A.   = 
B.   =   
C.   =  
D.   = 

Mathematics