The figure below is a square ABCD with center O. (M, N, P, and Q are the midpoints of the sides.)
A glide reflection sends the point A to the point Q and the point P to the point C. The axis of this glide reflection is a line passing through the points
A. A and Q.
B. A and B.
C. P and Q.
D. M and N.
E. none of these
Answer: D
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An electric charge is spread over a rectangular region R = { (x, y) | 0 ? x ? 3, 0 ? y ? 4}. Find the total charge on R if the charge density at a point (x, y) in R (measured in coulombs per square meter) is ?(x, y) = x² + 4y³.
Select the correct answer. a. 804 coulombs b. 91 coulombs c. 300 coulombs d. 265 coulombs
A turkey is removed from the oven when its temperature reaches 175°F and is placed on a table in a room where the temperature is 70°F. After 10 minutes the temperature of the turkey is 160°F and after 20 minutes it is 150°F. Use a linear approximation to predict the temperature of the turkey after 40 minutes.
Select the correct answer. a. 160 b. 36 c. 134 d. 135 e. 130
Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Use half-angle identities to find the exact value of the expression.tan 
A. 2 - 
B. 2 + 
C. 
D. 