Use natural logarithms to solve the exponential equation symbolically.5-x = 
A. x = ln 
B. x = - 
C. x = - ln 5
D. x = 
Answer: D
Mathematics
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Write a polynomial in two variables that describes the total area of the shaded region. Express the polynomial as the sum or difference of terms. 5x + 3y
A. 5x2 + 8xy + 3y2 B. 5x2 + 15xy + 3y2 C. 5x2 + 3y2 D. 5x2 + 5xy + 3y2
Mathematics
Solve the problem.The period of vibration P for a pendulum varies directly as the square root of the length L. If the period of vibration is 4 sec when the length is 64 inches, what is the period when L = 2.25 inches?
A. 4.5 sec B. 4.75 sec C. 0.75 sec D. 4.25 sec
Mathematics
Find the real solutions, if any, of the equation. Use the quadratic formula.x2 + 5x + 1 = 0
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.
?
?
??
A. 
B. 
C. 
D. 
E. 
Mathematics