3 years ago

Which represents a function ?

Mathematics

1 answer:

ella [17]3 years ago

3 0

Answer:

The answer is A. Both 1 and 4

Step-by-step explanation:

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If and CX = 5 units, what is DZ?

NeTakaya

The question is missing the figure. So, it is attached below.

Answer:

DZ = 4 units

Step-by-step explanation:

Given:

CD || XZ

YC = 25 units, CX = 5 units, YD = 20 units.

We know that,

If CD is parallel to XZ , then the line CD divides the sides XY and YZ of the triangle XYZ proportionally. This is true by triangle proportionality theorem.

Therefore, the lengths YC, CX, YD and DZ are in proportion. This gives,

$\frac{YC}{CX}=\frac{YD}{DZ}$

Rewrite in terms of DZ. This gives,

$DZ=\frac{YD\times CX}{YC}$

Plug in $YC=25,CX=5,YD=20$ . Solve for DZ.

$DZ=\frac{20\times 5}{25}\\\\DZ=\frac{100}{25}=4$

Therefore, the length of DZ is 4 units.

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Step-by-step explanation:

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Answer:

y=2

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Step-by-step explanation:

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put that wherever x is in the other equation

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