Determine if the graph of the function is concave up or concave down.y = -x2 + 1
A. Concave up
B. Concave down
Answer: B
Mathematics
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Provide an appropriate response.Use the law of sines to solve the triangle ABC if a = 19, c = 15, and C = 105°. If there are two possibilities, find both solutions. Round sides to four significant digits and angles to the nearest 0.1°.
A. A = 49.7°, B = 25.3°, b = 8.406 B. A = 133.0°, B = 47.0°, b = 6.714 C. A = 133.0°, B = 47.0°, b = 6.714; A = 49.7°, B = 25.3°, b = 8.406 D. no solution
Mathematics
Find the measure of the unknown angle in the pair of supplementary angles.
Find the measure of ?x.
A. 60° B. 210° C. 30° D. 70°
Mathematics
Multiply. Write the answer in simplest form.0 ? 
A. 
B. 
C. 0
D. undefined
Mathematics
Maximize P subject to the constraints.
A. 
at 
B. 
at 
C. 
at 
D. 
at 
E. 
at 
Mathematics