What is 537,680 rounded to the nearest ten

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels

If /is a line of symmetry, plot the partner points for the ones shown. noch 6 5 4 -3 -2 -1

Parallel lines r and s are cut by two transversales, parallel lines t and u. which angles are corresponding angles with angle 8