Simplify.(-7x5y)(-4x3y6)
A. -28x8y6
B. 28x8y7
C. 28x15y6
D. -11x8y6
Answer: B
Mathematics
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Integrate the function f over the given region.f(x, y) = sin 3x over the rectangle 0 ? x ? 
, 0 ? y ? ?
A. ?
B. 
C. 
D. 
Mathematics
Solve using matrices.5x + y - 5z + w = -21-x + 5y + z - 5w = 233x - y + 5z + 5w = 15 x + y - 5z - w = -23
A. (-1, 2, 7, 1) B. (-5, 3, -1, 6) C. (3, -2, 0, 5) D. (-3, -6, 12, 5)
Mathematics
Completely factor the polynomial.x2 + 6x - 55
A. (x - 55)(x + 1) B. (x - 11)(x + 5) C. cannot be factored D. (x + 11)(x - 5)
Mathematics
Find the distance s covered by a point moving with linear velocity v for a time t if
?
ft/sec and 
sec
?
If the answer needs rounding round it to three significant digits.
?
__________ ft
Fill in the blank(s) with the appropriate word(s).
Mathematics