Translate to a system of two equations, then solve.The perimeter of a rectangle is 86 m. If the width were doubled and the length were increased by 8 m, the perimeter would be 140 m. What are the length and width of the rectangle?
A. Width 24 m, length 19 m
B. Width 19 m, length 24 m
C. Width 16 m, length 21 m
D. Width 21 m, length 21 m
Answer: B
Mathematics
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Find f so that F = ?f. If the fuction is not conservative state so.F(x, y) = (-7e5y - yex)i + (6xe2y - ex)j
A. -7xe5y + 
+ C
B. -7xe5y - 
+ C
C. -7xe5y + -7ex + C
D. -7xe5y - yex + C
Mathematics
Find a polynomial of degree 3 with real coefficients that satisfies the given conditions.Zeros of -3, -1, 4 and P(2) = 5
A. P(x) = - 
- 
- 2
B. P(x) = 
+ 
- 2
C. P(x) = 
- 
- 2
D. P(x) = - 
+ 
+ 2
Mathematics
Find the real solutions of the equation.x4 - 8x3 + 16x2 + 8x - 17 = 0
A. {-4, 1} B. {-4, 4} C. {-1, 4} D. {-1, 1}
Mathematics
Indicate whether the number is a proper fraction, an improper fraction, or a mixed number.
A. Proper fraction B. Mixed number C. Improper fraction
Mathematics