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emmasim [6.3K]
3 years ago
13

Can someone please answer this for me ? thanks

Mathematics
2 answers:
Leokris [45]3 years ago
7 0

Answer:

x=-4.5

Step-by-step 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=\dfrac{1}{2}BC             [mid-point theorem]

3x+4=\dfrac{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

Sonja [21]3 years ago
5 0

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

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