Solve the nonlinear system of equations for real solutions.
A. (-3, -8), (-8, -3)
B. (3, -8), (3, 8)
C. (3, 8), (-3, 8), (3, -8), (-3, -8)
D. (3, 8), (8, 3), (-3, -8), (-8, -3)
Answer: C
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Solve the problem.A building 160 feet tall casts a 90 foot long shadow. If a person looks down from the top of the building, what is the measure of the angle between the end of the shadow and the vertical side of the building (to the nearest degree)? (Assume the person's eyes are level with the top of the building.)
A. 56° B. 34° C. 61° D. 29°
Find the vertex of: y= -4x²+ 8x- 3
What will be an ideal response?
Find all the complex roots. Write the answer in the indicated form.The complex square roots of 100(cos 210° + i sin 210°) (polar form)
A. 10(cos 105° + i sin 105°), 195(cos 285° + i sin 285°) B. 10(cos 210° + i sin 210°), 10(cos 195° + i sin 195°) C. 10(cos 105° + i sin 105°), 10(cos 285° + i sin 285°) D. 10(cos 210° + i sin 210°), -10(cos 195° + i sin 195°)
Tell whether the given rational expression is proper or improper. If improper, rewrite it as the sum of a polynomial and a proper rational expression.
A. improper; 1 - 
B. improper; 1 + 
C. improper; -1 + 
D. proper