Multiply and simplify.12 ? 

A.
B.
C. 1
D. 144


Answer: C

Mathematics

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Show that the curves are orthogonal.y2 + x2 = 1 and xy = 2

What will be an ideal response?

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Solve the initial value problem. = -  cos ?, r(0) = -6

A. r = -sin ? - 6
B. r = cos ? - 7
C. r = sin ? - 6
D. r = -  sin ? - 6

Mathematics

Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)

A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m

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Provide an appropriate response.A set of data consists of the number of years that applicants for foreign service jobs have studied German and the grades that they receive in a proficiency test in that language. The following linear model is obtained:  where x represents number of years of study and y represents grade in test. What does the slope of the model represent in terms of the grades on the test?

What will be an ideal response?

Mathematics