When you multiply the equation out and you simplify like terms you get.

2x^2 + 6xy + 4y^2

**Answer:**

**1)** Irrational.

**2)** Irrational.

**Step-by-step explanation:**

We have been given two numbers. We are asked to determine whether the given numbers are rational or irrational.

We know that a number is a known as rational number, when we can represent it as a fraction or it has terminating decimals.

A number is a known as rational number, when it has non-repeating and non-terminating decimals.

**1).**

**Since our given number has non-repeating or non-terminating decimal, therefore, given number is an irrational number.**

**2)**

**Since our given number has non-repeating or non-terminating decimal, therefore, given number is an irrational number.**

Perimeter of a poligon= sum of all sides.

Perimeter of this triangle=s+(s+4)+3s=5s+4

An expression that represents the perimeter of this triangle is**: 5s+4**

**Answer:**

I'm sorry what do you mean

**Answer:**

**4.4 miles**

**Step-by-step explanation:**

2.7 + 3.6 + 4.3 = 10.6

Subtract 10.6 from 15 to get your answer

15 - 10.6 =** 4.4**** ****miles**