Answer:
13
Step-by-step explanation:
if x = 5, substitute x for 5
3(5) - 2
now multiply
15 - 2
and subtract
13
The first one is correct.
DC=AC
There are 18 edges in all, the entire shape.
- Your welcome
Answer:
B) ![153.86 meters^{2}](https://tex.z-dn.net/?f=153.86%20meters%5E%7B2%7D)
Step-by-step explanation:
The formula for the area of a circle is : ![\pi *radius^{2}](https://tex.z-dn.net/?f=%5Cpi%20%2Aradius%5E%7B2%7D)
The radius of a circle is the length from one side to the centre.
To work this out you would have to multiply pi by the radius of 7 squared, this gives you 153.94, however if using pi as in 3.14, then the answer is 153.86.
1) Multiply pi by 7 squared.
![\pi *7^{2} =153.86 meters^{2}](https://tex.z-dn.net/?f=%5Cpi%20%2A7%5E%7B2%7D%20%3D153.86%20meters%5E%7B2%7D)