Which of the following sets of numbers could represent the three sides of a right triangle?
A){40, 42, 58}
B) {12, 16, 21}
C){29, 40,50}
D) {12,60,61}
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(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Me d is also an option but i couldn't get it in the picture