Question

Can someone please answer this for me ? thanks

Answer 1

3x +4 is 7x and 4x- 1 is 3x because yhat how you solve that

Answer 2

x=-4.5

Explanation:

In the given triangle, Two sides are divided into equal part.

It means D and E is mid point of AB and AC.

Mid-point theorem: The line joining the mid points of sides of a triangle then line (DE) parallel to BC and DE is half of BC.

In the given figure, (Attachment)

DE = 3x+4

BC = 4x-1

`DE=(1)/(2)BC` [mid-point theorem]

`3x+4=(1)/(2)(4x-1)`

`2(3x+4)=4x-1`

`6x+8=4x-1`

`6x-4x=-9`

`2x=-9`

`x=-4.5`

Hence, The value of x is -4.5