Determine the real solutions to the system of nonlinear equations.xy - x2 = -20x - 2y = 3
A. (5, 1), 
B. (5, 1), 
C. (-5, -1), 
D. (-5, -1), 
Answer: A
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Find the indicated angle.Find the supplement of 50°.
A. 220° B. 310° C. 40° D. 130°
Solve the problem.A projectile is fired from a height of 5.6 feet with an initial velocity of 163 ft/sec at an angle of 43° with the horizontal. The parametric equations for the path of the projectile are x = (163 cos 43°)t, and y = 5.6 + (163 sin 43°)t - 16t2,where x and y are in feet and t is in seconds. Find the height of the projectile after 4 seconds. Round your answer to the nearest tenth of a foot.
A. 386.3 ft B. 188.7 ft C. 476.8 ft D. 194.3 ft
Find the exact value of the expression. Do not use a calculator.sin2 60° - cos2 45° - sin2 30°
A. 
B. 3
C. 0
D. - 
Solve.-2p - 7 = -2 - 10p - 9p
A. {
}
B. {
}
C. {- 
}
D. ?