Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Rationalize the denominator.
A. 52
B. 3
C. 
D. 
Mathematics
Solve the problem.The perimeter of a triangle is 70 cm. The triangle is isosceles now, but if its base were lengthened by 7 cm and each leg were shortened by 4 cm, it would be equilateral. Find the base of the original triangle.
A. 27 B. 15 C. 16 D. 23
Mathematics
Answer the question.How many planes are determined by 5 points, no three of which are collinear?
A. 30 B. 60 C. 10 D. 20
Mathematics
Simplify.
÷ 6 ? 
? 
A. 0.259
B. 
C. 189
D. 
Mathematics