Provide an appropriate response.
Find the indicated part of the right triangle in the given figure by the most direct method. 
A. 70.6°
B. 19.4°
C. 20.7°
D. 69.3°
Answer: B
Mathematics
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Find A-1 without a calculator.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
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Subtract.-6.7 - (-4.3)
A. -11 B. 2.4 C. -2.4 D. 11
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Evaluate the expression.2 ? [5 + 2 ? (8 + 5)]
A. 182 B. 178 C. 62 D. 36
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Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 7x
A. 
; 
2
B. 
; 
2
C. 49; (x - 7)2
D. 0; 
2
Mathematics