Solve the problem.If A = 225 cm2, find the base of the triangle.
A. 7 cm
B. 18 cm
C. 26 cm
D. 25 cm
Answer: D
Mathematics
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A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 3, an+1 = (-1)nan
A. 3, -3, -3, 3, 3 B. 3, -3, 3, -3, 3 C. -3, 3, -3, 3, -3 D. 3, 3, -3, -3, 3
Mathematics
If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (cos 2t)i + (5 sin t)j
A. a = (-4 cos 2t)i + (-5 sin t)j B. a = (-2 cos 2t)i + (5 sin t)j C. a = (-4 cos 2t)i + (-25 sin t)j D. a = (4 cos 2t)i + (-5 sin t)j
Mathematics
Solve the equation by completing the square. Express any complex numbers using i notation.x2 + 8 = -x
A. x = 
B. x = 
C. x = 
D. x = 
Mathematics
Graph the polar equation.r = 4 sin 2?
A. 
B. 
C. 
D. 
Mathematics