Find the value of the trigonometric function.cos (-776.81°)
A. 0.8925
B. 0.5474
C. 0.0557
D. -0.8369
Answer: B
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Solve the problem.A box with no top is to be constructed from a piece of cardboard whose width measures x in. and whose length measures 3 in. more than its width. The box is to be formed by cutting squares that measure 2 in. on each side from the four corners, and then folding up the sides. If the volume of the box will be 140 in.3, what are the dimensions of the piece of cardboard?
A. 14 in. by 11 in. B. 19 in. by 16 in. C. 17 in. by 14 in. D. 24 in. by 16 in.
Write an augmented matrix for the system of equations. 8x + 4y + 2z = 26 9x + 9y + 3z = 60 8x + 3y + 2z = 20
A. 
B. 
C. 
D. 
Identify the equation as either an identity or not.cot2x = (csc x - 1)(csc x + 1)
A. Not an identity B. Identity
Solve the logarithmic equation. Round to four decimal places.log3(3x - 2) = 2.8
A. {7.8913} B. {-0.3235} C. {6.5580} D. {9.2247}