2 + y = 11

Solve the equation.

M∠3 is (3x + 4) ° and m∠5 is (2x + 11) °. Angles 3 and 5 are. The equation can be used to solve for x. m∠5 = °

Step on how to calculate variance

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I just need someone to check my answer: What is the sum of the arithmetic sequence 3, 9, 15 ..., if there are 24 terms? a) 1452 b) 1728 (my answer) c) 2028 d) 2268

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