The polar coordinates of a point are given. Find the rectangular coordinates of the point.(4, 70°) Round the rectangular coordinates to two decimal places.
A. (1.37, 3.76)
B. (1.59, 4.01)
C. (4.01, 1.59)
D. (3.76, 1.37)
Answer: A
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 0 for r(t) = t2i + (8t3 - 3)j + 
k
A. a(0) = 2i + 
k
B. a(0) = 2i - 
k
C. a(0) = 2i - 
k
D. a(0) = 2i - 
k
Add. -10 + (-12) + (-12) + (-14) + 20 + (-4)
A. -28 B. -32 C. -72 D. 12
Find the intercepts of the circle. Round to the nearest hundredth, when necessary.81x2 + 81y2 - 36x - 108y - 417 = 0
A. There are no intercepts. B. The x-intercept is x ? 40.87, and the y-intercept is y ? 39.71. C. The two x-intercepts are x ? 2.5 and x ? -2.06, and the two y-intercepts are y ? 3.03 and y ? -1.7. D. The two x-intercepts are x ? 4.78 and x ? -4.34, and the two y-intercepts are y ? 5.4 and y ? -4.06.
Write the fraction in lowest terms.
A. 
B. 
C. 
D. 