If cd ||xz and cx = 5 units, what is dz?
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2 units
3 units
4 units
5 units

The Question is Incomplete And the required Figure is below

The value of DZ is 4 units.

Step-by-step explanation:

Given:

CD ||XZ

CX = 5 units

CY = 25 units

DY = 20 units

To Find:

DZ = ?

Solution:

Basic Proportionality Theorem:

Basic Proportionality Theorem states that "If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, the other two sides are divided in the same ratio"

Here, In Δ XYZ

CD || XZ                                            ........Given

∴ ....Basic Proportionality Theorem

Substituting the given values we get

∴

The value of DZ is 4 units.

thats not a system of equations, that is a solution