The diagram shows the plans for the triangular park. what is the perimeter of the park?
the perimeter is + feet.

Perimeter =  feet

Step-by-step explanation:

The perimeter of a triangle is sum of all the three sides. To get the perimeter (the expression) we add the expressions of all the three sides and do algebra:

12x + 15x + 4 + 10x + 3x^2 - 8

3x^2 + 12x + 15x + 10 x + 4 - 8   [rearranged]

3x^2  + 37x   - 4

Hence, the perimeter is    feet

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!