Answer:
15 cm
Step-by-step explanation:
The area of an equilateral triangle is:
, where a is the length of one side.
We can find the value of a (the length) by:


a = 5, so the side length of this triangle is 5 cm.
The perimeter of an equilateral triangle will be 3 times the length.

Hope this helped!
Not sure but I think g(x)= -4x -8
The minus makes the graph descend and therefore it's on the other site of the y-axis (sorry for my English haha...I'm not a native speaker)
Answer:
D. Y = 25x + 140
Step-by-step explanation:
Answer:
Kayla has 15 friends
Step-by-step explanation:
Answer:
5. A.
6. F
Step-by-step explanation:
5. Perpendicular lines have slopes that are negative reciprocals of one another, so slope is 3
y = 3x + b
using coordinates (-6,3)
3 = 3(-6) + b
b = 21
y = 3x + 21
6. I think F is the right answer