Find the missing length in the similar triangles.Find the length of DE.

A. DE = 116.7
B. DE = 85.7
C. DE = 50
D. DE = 42.9


Answer: C

Mathematics

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Find the mean of the list of data. 13, 15, 17, 17, 15, 13 

A. 16 B. 14 C. 17 D. 13 E. 15

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Divide, if possible. Write the answer in simplest form.-2 ÷ 1

A. -2
B. -2
C. -2
D. -3

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Solve the exponential equation. For irrational solutions, round to four decimal places.9x + 9 = 243x

A.
B.
C.
D.

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Determine i) the domain of the function, ii) the range of the function, iii) the domain of the inverse, and iv) the range of the inverse.f(x) = 

A. f(x): D is all real numbers, R is all real numbers;
f-1(x): D is all real numbers, R is all real numbers
B. f(x): D = {x|x ? 1}, R = {y ? 0};
f-1(x): D = {x|x ? 0}, R = {y|y ? 1}
C. f(x): D is all real numbers, R = ;
f-1(x): D = , R is all real numbers
D. f(x): D = , R = ;
f-1(x): D = , R = 

Mathematics