**Answer:**

$3750 and $4250

**Step-by-step explanation:**

x + 500 = y

.045x + .035y = 317.50

.045x + .035(x + 500) = 317.50

.045x + .035x + 17.5 = 317.50

.08x = 300.00

x = 3750

y = 4250

**Answer:**

9m

**Step-by-step explanation:**

-17+26=9 (Or 26-17=9)

The **triangle **lines of **symmetry **are 60 **degrees **apart option** (A) 60 degrees **is **correct**.

<h3>What is a regular polygon?</h3>

A **polygon **is a **geometric** figure with a** finite number **of sides in** two dimensions**. On the **sides** or edges of a **polygon**, straight-line segments are joined end to **end** to form a closed** shape**. The **vertices**, also known as **corners**, are the points where two **line** segments **meet** and form an angle.

As we know,

The act of using **mathematics **to address issues in the **actual **world is known as **mathematical **thinking.

As the **pentagon **has 5 sides and 5 lines of symmetry.

The **pentagon's **lines of **symmetry **are apart 72(360/5) degrees apart.

**Similarly **in the **triangle**, the **sum **of the interior **angle **is 180 **degrees**

The triangle lines of symmetry are 60(180/3) degrees apart.

Thus, the **triangle **lines of **symmetry **are 60 **degrees **apart option** (A) 60 degrees **is **correct**.

Learn more about the **regular polygon** here:

brainly.com/question/11810316

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