1. In the following figure, QRST is a rectangle. Without using a protractor, determine the measure of ZROS. Write an equation that could be used to solve the problem.
T
19°
Part of a 90° angle.
Equation
Solution
R

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Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

What is the prime factorization of 230