Add 11 to 9 for one side of the solution**: 20**

Subtract 11 from 9 to get the other solution**: -2**

**For question 4, **** units,**

**For question 5, **** units.**

**Step-by-step explanation:**

**Step 1:**

Since the given polygons are similar to each other, all the **ratios of one polygon to the other** will remain **equal for all the values **of the two similar polygons.

We take the **ratio of the same sides of both polygons** i.e. the ratio of the lengths or the ratio of the widths.

**Step 2:**

For question 4, the first rectangle has a **length of 9 units** while the **width is 3 units.**

For the second rectangle, **the length is x **as x is greater than the width in the first rectangle. **The width is 6 units.**

The **ratio** of the first rectangle to the second is;

So units.

**Step 3:**

The shapes in question 5 are made of a **square and a triangle. **

For the first shape, the **side length is 6 units** while the **side of the triangle** is** 10 units.**

For the second shape, the** side length **is** 5 units** while the** side of the triangle** is **x units.**

The **ratio** of the first shape to the second is;

So units.

**Answer:**

the answer would be y=2x+4

**Step-by-step explanation:**

4.000 plus 200 plus 90 plus 3

**Answer:**

SSS

**Step-by-step explanation:**

The two triangles both share a side (the middle line), and it is shown that the other lines are congruent to each other. So all 3 sides are congruent, meaning SSS is the postulate that proves this.