Elliot is building a sandbox in the shape of a triangle. A model of the sandbox is shown. Which expression represents the perimeter of Elliot's sandbox? (1 point) Responses 3x+10 3 x plus 10 x+10 x plus 10 3x−2 3 x minus 2 x+11
The expression that represents the perimeter of Elliot's sandbox is:
3x + 10
To find the perimeter of the sandbox, we need to add up the lengths of all three sides of the triangle.
Looking at the given options, the expression that represents the perimeter of Elliot's sandbox is:
3x + 10.
To find the perimeter of Elliot's sandbox, we need to add up the lengths of all three sides of the triangle.
Looking at the model of the sandbox, we can see that there are three sides labeled as "x," "x+10," and "x+11."
To calculate the perimeter, we can add up these three side lengths:
Perimeter = x + (x+10) + (x+11)
Now, simplify the expression:
Perimeter = x + x + 10 + x + 11
Combining like terms:
Perimeter = 3x + 21
Therefore, the expression that represents the perimeter of Elliot's sandbox is 3x + 21.