Solve the problem.Determine a polynomial that represents the area of the figure. Leave ? in the answer.
A. 4x2 + 12x + 9
B. 4?x2 + 12?x + 9?
C. 4x2 + 9
D. 4?x2 + 9?
Answer: B
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The vector r(t) is the position vector of a particle at time t. Find the angle between the velocity and the acceleration vectors at time t = 0.r(t) = e2ti + (5 + e-2t)j + (3 cos 9t)k
A. 
B. 
C. 0
D. 
Prove that the equation is an identity.cos (x + y) cos (x - y) = cos2 x cos2 y - sin2 x sin2 y
What will be an ideal response?
Use the given information about the polynomial function f(x) to write its complete factored form.Degree 4; zeros: 5, 4, 2, -1; leading coefficient = 1
A. f(x) = (x + 5)(x + 4)(x + 2)(x - 1) B. f(x) = (x + 5)(x - 4)(x + 2)(x - 1) C. f(x) = (x - 5)(x + 4)(x - 2)(x + 1) D. f(x) = (x - 5)(x - 4)(x - 2)(x + 1)
Solve the problem.A baseball team won 4 of its games by 3 runs, lost 1 of its games by 5 runs, lost 1 game by 6 runs, and finished the season by winning its last 2 games by 4 runs. Express as a real number, how many more or fewer runs the did the team score versus their opponents in the 8 games.
A. 4 runs B. 9 runs C. -4 runs D. 21 runs