The measures of two sides of a triangle are 7.3 centimeters and 2.94 centimeters. the triangle's perimeter is 14.8 centimeters. which equation could not be used to find the length of the third side?
7.3 + 2.94 + x = 14.8
14.8 = x + 10.24
14.8 - x = 7.3 + 2.94
x - 14.8 = 2.94 + 7.3

The perimeter is the sum of all lengths of the side of a polygon. For a triangle it is expressed as:

P = a + b + c

We let a = 7.3, b = 2.94 and c=x

Therefore, the perimeter of the given triangle is:

14.8 = 7.3 + 2.94 + x

From the options given, the correct answer is the last option. The expression, x - 14.8 = 2.94 + 7.3, will give an erroneous value of the third side. It will be more than the perimeter given.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

Ithink the answer will be 5