Solve.The sum of the squares of two numbers is 157 and the difference of their squares is 85. Find the two numbers

A. 11 and 6; 11 and -6; -11 and 6; -11 and -6
B. 11 and 6
C. 11 and 6; -11 and -6
D. 11 and 6; 11 and -6


Answer: A

Mathematics

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Solve the problem.Factory A makes 11 model-A, 5 model-D, and 4 model-M train sets. Factory B makes 6 model-A, 8 model-D, and 8 model-M train sets. If model-A sells for $18, model-D for $22, and model-M for $35, write a 2 x 3 matrix to summarize the income by model.

A.

B.

C.

D.

Mathematics

?Write the following expression as a logarithm of a single quantity. ? ?

A. ?
B. ?
C. ?
D. ?
E. ?

Mathematics

Graph the function, and state its domain and range.f(x) = -x3 + 2

A. Domain: (-?, ?); Range: (-?, ?)

B. Domain: (-?, ?); Range: (-?, ?)

C. Domain: (-?, ?); Range: (-?, ?)

D. Domain: (-?, ?); Range: (-?, ?)

Mathematics

Find all complex number solutions.x2 + 4 = 0

A. -2i B. 2i C. ±2i D. ±2

Mathematics