Question

The area of a triangle is 140. The side length is represented by 2x + 1 and a side length of 8. What is the value

of x?

Answer 1

Hello !

1.1 Formula

area of a triangle = length * width

1.2 Application

• aera =
  `(2x + 1) * 8`

• area = 140

2. Solve equation with x

`(2x + 1) * 8 = 140\\\\2x*8 + 1*8 = 140\\\\16x + 8 = 140\\\\16x = 140 - 8\\\\16x = 132\\\\x = (132)/(16)\\\\\boxed{x = 8,25}`

3. Conclusion

The value of x is 8,25.

Have a nice day!