A composite figure is formed by combining a square and a triangle. Its total area is 47.5 ft2. The area of the triangle is 22.5 ft2. What is the length of each side of the square? Complete the explanation.

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.