Explanation: a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number
(35 + 47 + 42 + x) / 4 = 50 (124 + x) / 4 = 50....multiply both sides by 4, cancelling the 4 on the left side. 124 + x = 50 * 4 124 + x = 200 x = 200 - 124 x = 76 <===
It is 1/4 of the area of the larger triangle...basically if you connect the three midpoints of the triangle's sides it creates four identical smaller triangles...
The perimeter is one half of the larger triangle...
