In rhombus ABCD shown, m angle A = 140 and diagonal BD has been drawn. If side BC is dilated with D as the center and a using a scale factor of 1/2, then which of the following would be the measure of angle DB’C’?
(1)10
(2)20
(3)40
(4)70

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.