Solve the problem.The radius of a sphere depends on its surface area, S, and is given by the formula r = 
.What is the surface area of a sphere with radius of 7.1 inches?Use 3.14 for ?. Round to the nearest tenth of a square inch.
A. 633.1 square inches
B. 89.2 square inches
C. 158.3 square inches
D. 22.3 square inches
Answer: A
Mathematics
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Identify the equation without applying a rotation of axes.3x2 + 3xy + 2y2 + 2x + 2y - 7 = 0
A. parabola B. hyperbola C. ellipse D. circle
Mathematics
For the given sets, construct a Venn diagram and place the elements in the proper region.Let U = {a, d, i, g, m, k, t}A = {d, i, g, k}B = {a, d, i, t}
A. 
B. 
Mathematics
Rationalize the denominator and simplify. 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Multiply the fractions and reduce: 
? 
? 
A. 
B. 0
C. 
D. 1
Mathematics