There should not be a -5 outside of the parenthesis in the second line
Given that there is an equilateral triangle.
We know that equilateral triangle has all sides equal.
Perimeter = sum of all sides
P = s+s+s = 3s
P = 3s is the equaiton where P = perimeter and s = side of the triangle.
In geometry, an equilateral triangle is a triangle in which all three sides and angles are equal. ; that is, all three internal angles are also congruent to each other and hene have to be each 60°. It is also a regular polygon, with three sides and so sometimes also referred to as a regular triangle.
Answer:
x = 7
Step-by-step explanation:
Add 12 to both sides:
2x + 9 = 5x - 12
2x + 21 = 5x
Subtract 2x from both sides:
21 = 3x
Divide each side by 3:
7 = x
So, x = 7
Answer:
15 hours
Step-by-step explanation:
150 divided by 10 equals 15
