Solve the equation.x(x - 30) = -225
A. {30}
B. {15}
C. {-15}
D. {15, -15}
Answer: B
Mathematics
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Perform the indicated operation.Add (6x + 4 + 5x3) to the sum of (6 + x2 + 2x) and 
A. 6x3 + x2 + 11x + 5 B. 6x3 + x2 + 11x + 10 C. 6x3 + 4x2 + 8x + 5 D. 7x3 + 11x + 5
Mathematics
Find the value of 
a. 0
b. –0.7
c. –0.7
d. –0.6
e. 0.16
Mathematics
Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ? B. {(-6, 2)} C. {(-5, 1)} D. {(5, 2)}
Mathematics
Use the properties of logarithms to evaluate the expression.eln x41
A. x B. ln x41 C. ex41 D. x41
Mathematics