An isosceles trapezoid has a perimeter of 52.9 meters. its shorter base measures 11.4 meters and its longer base measures 12.3 meters. the two remaining sides have the same length; what is that length?

Let one of the sides = x

2x + b1 + b2 = 52.9

b1 = 11.4 and b2 = 12.3

2x + 11.4 + 12.3 = 52.9

2x + 23.7 = 52.9

2x = 52.9 - 23.7

2x = 29.2

x = 29.2 / 2

x = 14.6

Each of the two unknown sides is 14.6

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

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step-by-step explanation: