Question

The perimeter is less than 20 meters Please help I'm desperate​

Answer 1

x < 4

Explanation:

The perimeter of a two-dimensional shape is the distance all the way around the outside.

Therefore, from inspection of the triangle:

⇒ Perimeter = 4 + 9 + x + 3

⇒ Perimeter = x + 16

If the perimeter is less than 20 meters then:

⇒ x + 16 < 20

Solve the inequality:

⇒ x + 16 - 16 < 20 - 16

⇒ x < 4

Answer 2

• Inequality is: x + 16 < 20
• Solution is: x < 4

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The perimeter is:

• P = 4 + 9 + x + 3
• P = x + 16

If the perimeter is less than 20, then the inequality is:

• P < 20

• x + 16 < 20
• x < 20 - 16
• x < 4