Solve the problem.The perimeter of a triangle is 45 cm. The triangle is isosceles now, but if its base were lengthened by 2 cm and each leg were shortened by 4 cm, it would be equilateral. Find the base of the original triangle.
A. 17 cm
B. 13 cm
C. 11 cm
D. 10 cm
Answer: C
Mathematics
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Provide an appropriate response.Simplify the following; express your answer with no radical in the denominator: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Using interval notation, write the set.{x| x ? 6}
A. (-?, 6) B. [-?, 6) C. (-?, 6] D. [-?, 6]
Mathematics
Give a formula for a piecewise-defined function f for the graph shown.
A.
f(x) = 
B.
f(x) = 
C.
f(x) = 
D.
f(x) = 
Mathematics
Convert to trigonometric notation and perform the indicated operation.(1 - i
)(2 - 2i)
A. 2i(
- 1)
B. -2i(1 - 
)
C. -2i(1 + 
)
D. 2i(1 + 
)
Mathematics