A rectangle has an area 390 square centimeters. Its length is 4 centimeters more than twice its width. Find the perimeter of the rectangle.
A. 78
B. 98
C. 94
D. 86
Answer: D
Mathematics
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Evaluate. The differential is exact.
A. 2 B. 0 C. -2 D. 1
Mathematics
Use the given information to find the quadrant in which ? lies.sin ? > 0 and cos ? < 0
A. Quadrant I B. Quadrant III C. Quadrant IV D. Quadrant II
Mathematics
Write a recursion formula for the sequence.7, 42, 252, 1512, . . .
A. an = 6an-1, a1 = 7 B. an = an-1 + 12, a1 = 7 C. an = an-1 + 6, a1 = 7 D. an = 12an-1, a1 = 7
Mathematics
Solve.x = 
- 4
A. -6 B. -5 C. 6 D. 7
Mathematics