Solve the problem.A rectangle has a length of x + 5 and a width of x - 5 and has an area of 56 square units. Find the length and width of the rectangle. (A = LW)
A. width = 2 units; length = 28 units
B. width = 4 units; length = 14 units
C. width = 1 unit; length = 56 units
D. width = 7 units; length = 8 units
Answer: B
Mathematics
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Find the volume of the indicated region.The region bounded by z = 7x sin xy over the rectangle 0 ? x ? ?, 0 ? y ? 1
A. ?
B. 
C. 7?
D. 7? - 7
Mathematics
Find 
and 
.f(x, y) = 4x - 6y2 - 9
A. 
= 4x; 
= -12y
B. 
= -12y; 
= 4
C. 
= 4; 
= -12y
D. 
= -5; 
= -12y - 9
Mathematics
Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 3, u '(1) = -5, v(1) = 7, v '(1) = -2.
at x = 1
A. 
B. 
C. - 
D. - 
Mathematics
Solve.- 
x - 
= 
(x + 4)
A. x = 
B. x = - 
C. x = 
D. x = - 
Mathematics