Determine ratio of A to B. Round as indicated.A = 49? square centimeters is the area of a circle with diameter 14 centimeters. B = 196 square centimeters is the area of a square with sides of length <14 centimeters. (Do not round.)
A. 
B. 
C. 
D. 
Answer: C
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Find the acute angle, in degrees, between the lines.y = 
x + 10 and y = - 
x - 18
A. 30° B. 45° C. 60° D. 75°
Simplify the expression by using a sum or difference identity.cos (260°) cos (20°) + sin (260°) sin (20°)
A. 
B. - 
C. - 
D. 
Let U = {all soda pops}, A = {all diet soda pops},B = {all cola soda pops}, C = {all soda pops in cans},and D = {all caffeine-free soda pops}. Describe theset in words.(A ? D) ? C'
A. All diet soda pops and all caffeine-free soda pops, not in cans B. All non-diet, non-caffeine-free soda pops not in cans C. All non-cola soda pops not in cans D. All diet, caffeine-free soda pops not in cans
Solve the problem.The number of family practice physicians in a certain country can be approximated by the equation 
where x is the number of years since 2010 and y is the number of physicians in thousands. Write the equation in slope-intercept form and identify the slope and y-intercept. Then, explain the meaning of the slope in this specific equation.
A. y = 
x + 54, m = 
, y-intercept is (0, 54); The slope is the amount of decrease in thousands in the number of family practice physicians in this country per year.
B. y = 
x + 540, m = 
, y-intercept is (0, 540); The slope is the amount of decrease in thousands in the number of family practice physicians in this country per year.
C. y = 
x + 540, m = 
, y-intercept is (0, 540); The slope is the amount of increase in thousands in the number of family practice physicians in this country per year.
D. y = 
x + 54, m = 
, y-intercept is (0, 54); The slope is the amount of increase in thousands in the number of family practice physicians in this country per year.