9514 1404 393

**Answer:**

1 : 400

**Step-by-step explanation:**

Victoria's scale factor is ...

2 cm : 8 m = 2 cm : 800 cm = 2 : 800 = **1 : 400**

**Answer:**

**(36x^2 - 9) cm^2**

**Step-by-step explanation:**

a= l*b

a= (6x+3)*(6x-3)

=(36x^2 - 9) cm^2

Sorry, I can't tell if you've written the equation as **2n²+1** or **n²+1**

If it's **2n²+1,** substitute n for 9, as you want to find the 9th term of the sequence.

9²=81×2=164=1=165, so the 9th term is 165

If it's **n²+1**, substitute n for 9, as you want to find the 9th term of the sequence. 9²=81+1=82, so the 9th term is 83.

**Answer:**

m=4,2=9, and r=. (Examples 1-6). 1. 3+ m 7. 2. z-m 5. | 3. 12r 2