Multiply.(x + 7)(x - 7)
A. x2 - 14x - 49
B. x2 - 14
C. x2 + 14x - 49
D. x2 - 49
Answer: D
Mathematics
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Find the exact value.Given that tan ? = 
with ? in quadrant I, find cos 2?.
A. 
B. - 
C. - 
D. 
Mathematics
Solve the problem.Approximate 
to hundredths by noting that 
and using four terms of the appropriate binomial series.
A. 4.9 B. 6.32 C. 3.91 D. 4.16
Mathematics
Simplify.
A. u
B. 
C. 
D. u
Mathematics
A data set consists of 4,000 points and has mean of 840 with a standard of 16. What is the normal distribution?
What will be an ideal response?
Mathematics