Add.18 + (-11) + 13 + (-16) + 2 + (-9)
A. -7
B. -29
C. -69
D. -3
Answer: D
Mathematics
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Find the standard score for the given data value.A data value in the 31st percentile.
A. z = 0.5 B. z = 61.79 C. z = -0.5 D. z = -1.9
Mathematics
Solve the given differential equation.D3y + 9 D2y + 27 Dy + 27y = 0
A. y = e-3x(c1 + c2x)
B. y = e-3x
C. y = e3x(c1 + c2x + c3x2)
D. y = e-3x(c1 + c2x + c3x2)
Mathematics
A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given.P = 2L + 2w; P = 18, L = 3
A. L = 6 B. w = 15 C. w = 21 D. w = 6
Mathematics
Complete the identity.Complete the reciprocal identity: 
= 
A. tan ? = 
B. sec ? = 
C. cos ? = 
D. csc ? = 
Mathematics