Solve the equation.
?
?
A. 
B. 
C. 
D. 
E. no solution
Answer: B
Mathematics
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Find the vertex, focus, and directrix of the parabola with the given equation.y2 + 8y = 8x + 40
A. vertex: (-7, -4) focus: (-7, -2) directrix: y = -6 B. vertex: (-7, -4) focus: (-5, -4) directrix: x = -9 C. vertex: (-7, -4) focus: (-9, -4) directrix: x = -5 D. vertex: (-7, -4) focus: (-7, -6) directrix: y = -2
Mathematics
Solve the problem.The radius, r, of a sphere can be found using the formula 
where S is the surface area. If the surface area is 11,118 square inches, what is the radius? (Use ? ? 3.14 and round to the nearest tenth.)
A. 52.7 in. B. 29.8 in. C. 93.4 in. D. 59.6 in.
Mathematics
Find the perimeter.
A. 127 ft B. 90 ft C. 371 ft D. 120 ft
Mathematics
2.50mL = ? gtt
A. 37.5gtt B. gtt37.5 C. 15gtt D. cannot be converted
Mathematics