The length of a rectangular garden abcd is 9 feet more than its width. it is surrounded by a brick walkway 4 feet wide as shown below. suppose the total area of the walkway is 400 square feet. what are the dimensions of the garden? i keep trying to do it but it doesn't work.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

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.