Determine whether the given equation is rational or non-rational.5x + 3 =  + 8

A. Rational
B. Non-rational


Answer: A

Mathematics

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Use an identity to write the expression as a single trigonometric function or as a single number.4 sin 2x cos 2x

A. 2 sin 4x
B.  sin 16x
C. cos 8x
D. cos 4x

Mathematics

A pair of similar triangles is shown. Find the measure of the segment marked with the letter x.

A. x = 12 B. x = 7 C. x = 21 D. x = 28

Mathematics

Use Cramer's rule to solve the system of linear equations in two variables.

A. (-7, -3) B. (7, 3) C. (-3, 7) D. (3, 7)

Mathematics

Factor when possible. If the polynomial is prime, say so.m2 + mn - 20n2

A. (m + 5n)(m + 4n) B. (m + 5n)(m - 4n) C. (m - 5n)(m + 4n) D. (m - 5n)(m - 4n)

Mathematics