Solve the problem.A stained glass window is composed of 20 identical triangular sections. Each triangle has sides of 5 inches, 7 inches, and 8 inches. Find the total area of the window to the nearest square inch.
A. 17 in.2
B. 4285 in.2
C. 346 in.2
D. 110 in.2
Answer: C
Mathematics
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Use the multiplication principle to solve the equation.-x = - 
A. - 
B. - 
C. 
D. 
Mathematics
Find the unit tangent vector T and the principal unit normal vector N. r(t) = (t2 - 5)i + (2t - 5)j + 8k
A. T = 
i - 
j; N = - 
i - 
j
B. T = 
i + 
j; N = 
i + 
j
C. T = 
i + 
j; N = 
i - 
j
D. T = 
i + 
j; N = 
i - 
j
Mathematics
Use a truth table to determine whether the two statements are equivalent.q ? ~p and ~p ? ~q
A. Yes B. No
Mathematics
Multiply the real numbers. Write any improper fraction as a whole or mixed number where appropriate.(-9)(19)
A. 90 B. -171 C. -81 D. 18
Mathematics