Solve the problem. Round your answer to 2 decimal places when necessary.The population of a certain country is about 105 million. The overall birth rate is 19.9 births per 1000. Approximately how many births were there in the country?
A. 20,900 births
B. 20.9 million births
C. 2.09 million births
D. 209,000 births
Answer: C
Mathematics
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Find a rectangular equation equivalent to the given pair of parametric equations.x = 2 cos t, y = 3 sec t; - 
< t < 
A. y = 6x; 0 < x ? 2
B. y = 
; 0 < x ? 2
C. y = 4x; 0 < x ? 2
D. y = 
; 0 < x < 2
Mathematics
Find the point-slope form of the equation that is described.Passes through the point (-6, 7), parallel to the line 3x + 7y = 3
A. y + 7 = 
(x - 6)
B. y + 6 = 
(x - 7)
C. y - 7 = - 
(x + 6)
D. y - 7 = - 
(x + 6)
Mathematics
Factor when possible. If the polynomial is prime, say so.a2 - 6ab - 16b2
A. (a - 2b)(a + 8b) B. (a + 2b)(a - 8b) C. (a - 2b)(a + b) D. prime
Mathematics
Graph the equation. Identify the coordinates of the vertex.y = x2 - 5x + 1
A. 
B. (0, 1)
C. 
D. (2, -9)
Mathematics