Multiply.(7x + 3y)2
A. 7x2 + 42xy + 9y2
B. 7x2 + 9y2
C. 49x2 + 9y2
D. 49x2 + 42xy + 9y2
Answer: D
Mathematics
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Find the torsion of the space curve.r(t) = (t - 3)i + (ln(sec t) + 8)j - 10k, -?/2 < t < ?/2
A. ? = 0 B. ? = -1 C. ? = 1 D. Undefined
Mathematics
Solve the equation. Express radicals in simplest form.(7 - 5x)2 = 2
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Mathematics
Perform the operation and write the result in the standard form.(4 - 3i)(7 + 8i)
A. 4 - 53i B. -24i2 + 11i - 28 C. 52 + 11i D. 52 - 11i
Mathematics
Convert as indicated. When necessary, round to the nearest tenth of a degree.82° C to degrees Fahrenheit
A. 31.4° F B. 179.6° F C. 115.6° F D. 67° F
Mathematics