Perform the matrix multiplication.Let A = 
and B = 
. Find AB.
A. 
B. 
C. 
D. 
Answer: B
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Decide if the number is rational or irrational.?
A. Rational B. Irrational
Use the given information to find the equation of the circle.Center: (0, 2); radius: 
A. x2 + (y - 2)2 = 19 B. (x - 2)2 + y2 = 361 C. x2 + (y + 2)2 = 19 D. (x + 2)2 + y2 = 361
Give the rectangular coordinates for the point.(2, 270°)
A. (0, 2) B. (0, -2) C. (2, 0) D. (-2, 0)
Solve the problem.A person standing close to the edge on top of a 304-foot building throws a baseball vertically upward. The quadratic function 
models the ball's height above the ground, s(t), in feet, t seconds after it was thrown. After how many seconds does the ball reach its maximum height? Round to the nearest tenth of a second if necessary.
A. 368 seconds B. 6.8 seconds C. 1.5 seconds D. 2 seconds