Answer: 160 inches.
Step-by-step explanation:
If an octagon has 8 sides and the side length is 20 inches, 20 x 8 = 160 inches. That means she needs 160 inches of wire.
Answer:
-3
Step-by-step explanation:
First take (-3+2) and simplify that which will turn into (-1). Then take (-5+7) which will turn into (2). Then plug that back into the equation and you get (-1)-(2). And you get -3.
Answer:
h ≈ 11.9
Step-by-step explanation:
Since the triangle is right we can use the cosine ratio to find h
cos24° =
= 
Multiply both sides by 13
13 × cos24° = h
⇒ h = 11.9 cm ( to 1 dec. place )
<u>Answer:</u>

<u>Step-by-step explanation:</u>
Given:
Mint condition coins = 
Total number of coins = 
Ratio
The questions asks for the ratio between mint condition coins to the total number of coins, so:
Mint condition coins : number of coins = 
(simplified form)
Hope this helps :)