Find the value of d2y/dx2 at the point defined by the given value of t.x = t + cos t, y = 2 - sin t, t = 
A. -2
B. -4
C. -
D. 
Answer: B
Mathematics
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Represent the vector in the form v = ai + bj whose magnitude and direction angle are given.
= 14; ? = 270°
A. v = -14i - 14j
B. v = -14j
C. v = -14i
D. v = 14
Mathematics
Solve. Write the answer as a mixed number in simplest form.On a recent trip, Asha drove 234 miles on 16
gallons of gasoline. How many miles per gallon did she average?
A. 14
mpg
B. 936
mpg
C. 3802
mpg
D. 
mpg
Mathematics
Solve the exponential equation and approximate the result, correct to three decimal places.32x - 4 ? 3x = 21
A. 0.254 B. 1.771 C. 1.000 D. ?
Mathematics
Given that the polynomial function has the given zero, find the other zeros.f(x) = x4 - 9; 
A. 
i
B. -
i, 
i, -
C. -
D. -
, 3i, -3i
Mathematics