Solve the problem.The length of a rectangular storage room is 9 feet longer than its width. If the area of the room is 90 square feet, find its dimensions.
A. 5 ft by 16 ft
B. 7 ft by 16 ft
C. 6 ft by 15 ft
D. 5 ft by 14 ft
Answer: C
Mathematics
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Find the second derivative.y = 
- 9
A. 19x
B. 
x2
C. 
x
D. 19x - 9
Mathematics
Use implicit differentiation to find dy/dx and d2y/dx2.x2 + y2 = 6
A. 
= - 
; 
= - 
B. 
= 
; 
= 
C. 
= - 
; 
= - 
D. 
= - 
; 
= - 
Mathematics
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = x2 - 1, [0, 8], left-hand endpoint
A. 
B. 
C. 
D. 
Mathematics
Write the improper fraction as a mixed or whole number.
A. 17
B. 124
C. 124
D. 
Mathematics