Find the sign of the following.sec (-?), given that ? is in the interval (180°, 270°).
A. negative
B. positive
Answer: A
Mathematics
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Find Dxy.y = x4 cosh-1 4x
A. 4x3 cosh-1 4x + 
B. 4x3 cosh-1 4x + 
C. 4x3 cosh-1 4x + 
D. 4x3 cosh-1 4x + 
Mathematics
Evaluate. 122
A. 24 B. 4096 C. 169 D. 144
Mathematics
For the pair of similar triangles, find the missing side n. Round to the nearest tenth when necessary.
A. n = 4.4 in. B. n = 360 in. C. n = 0.9 in. D. n = 90 in.
Mathematics
Factor completely. If prime, so state.x3 - 512
A. (x + 512)(x + 1)(x - 1) B. (x + 8)(x2 - 8x + 64) C. (x - 8)(x2 + 8x + 64) D. (x - 8)(x2 + 64)
Mathematics