Factor, if possible.(s + 7)3 - 343
A. s(s2 - 21s + 147)
B. s(s2 + 21s + 147)
C. (s - 7)(s2 - 21s + 147)
D. s(s + 7)(s - 49)
Answer: B
Mathematics
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Name the congruent sides of the triangles shown below.
A.
B.
C.
D.
Mathematics
Provide an appropriate response.The standard normal probability density function is defined by f(x) = 
e- x2/2. (a) Use the fact that 
dx = 1 to show that 
dx =
.(b) Use the result in part (a) to show that the standard normal probability density function has variance 1.
What will be an ideal response?
Mathematics
Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (2, 1) B. (1, -2) C. (1, 2) D. (1, 4)
Mathematics
Rewrite with positive exponents, and simplify, if possible.
-3/4
A. 
3/4
B. 
C. 
4/3
D. 
4/3
Mathematics