The perimeter of a rectangular shaped photograph is 68 inches. The length is 2 inches longer than the width. What is the length of the photograph?
a. 16
b. 18
c. 20
d. 33
b. 18
Mathematics
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Evaluate.Let a = 
, b = 
. Find 6a - 7b.
A. 
B. 
C. 
D. 
Mathematics
Subtract.(2a + 2b - c) - (8b + 4c + 6d)
A. 2a - 6b - 3c - 6d B. 2a - 6b + 5c + 6d C. 2a - 6b - 5c - 6d D. 2a - 6b - 5c + 6d
Mathematics
Without graphing the function, determine its amplitude or period as requested.y = -2 cos xFind the period.
A. ?
B. 2?
C. 2
D. 
Mathematics
Find u ? v for the two vectors given. Round your answer to three decimal places.A vector u of length 2 pointing 45° to the left of the positive y-axis and a vector v of length 9 pointing 15° to the right of the negative y-axis.
A. -15.588 B. -9.526 C. -12.728 D. -17.387
Mathematics