Find the exact value of the expression.tan 135°
A. 1
B. -1
C. - 
D. 
Answer: B
Mathematics
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Solve the problem.The area of a circle with radius r is given by the function A(r) = ?r2. Find the area of the base of a circular storage tank if the radius is 5 feet long. Use ? ? 3.14.
A. 78.5 square feet B. 15.7 square feet C. 31.4 square feet D. 75 square feet
Mathematics
Solve for x in the proportion.
= 
A. 3 B. 5 C. 4 D. 6
Mathematics
In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.a = 1 ft, c = 30 ft
A. b ? 31 ft B. b ? 30.0 ft C. b = 29 ft D. b ? 5.4 ft
Mathematics
Solve the system using the inverse matrix method.
A. x = 2, y = -1; (2, -1) B. x = -2, y = 1; (-2, 1) C. x = 1, y = -2; (1, -2) D. x = -1, y = 2; (-1, 2)
Mathematics