Solve the problem.If P = (-1, -4) and Q = (x, -20), find all numbers x such that the vector represented by 
has length -20.
A. {13, 11}
B. {11, -14}
C. {13, -13}
D. {11, -13}
Answer: D
Mathematics
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First, use front end rounding to estimate each answer. Then find the exact answer.21 + 
What will be an ideal response?
Mathematics
Solve the inequality.49x2 + 25 < 70x
A. 
B. No real solution
C. 
D. 
Mathematics
Identify the digit with the given place value.524,394thousands
A. 0.004 B. 5 C. 4000 D. 4
Mathematics
Express as a single logarithm.3ln (x - 4) - 7 ln x
A. ln x7(x - 4)3
B. ln 
C. ln 21x(x - 4)
D. ln 
Mathematics