So measure the pen in meters
A) Perimeter I’m 90% sure
I say that becuase if she is lining the OUTER EDGE of her driveway then she would need to know the outside og her driveway which would be perimeter.
Answer: √51
—————————
a^2 + b^2 = c^2
a^2 + 7^2 = 10^2
a^2 + 49 = 100
a^2 = 51
√(a^2) = √51
a = √51
Answer:
D. -1/2
Step-by-step explanation:
When a line is perpendicular to another line the slope will be the exact opposite. For example line A = y = 3x + 5 the line perpendicular to it will be -1/3x.
So -1/2 is the slope of your perpendicular line.
Answer:

Step-by-step explanation:
Apply the 30-60-90 formula
side between 60 and 90 is x
side between 90 and 30 is 
side between 90 and 30 is 2x
If
=
then x= 