Mathematics: Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 7 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd? 5.50 12.25 8 14

Look at the figure below: triangle abc is a right

que40

21.07.2019

$dc=12.25$ units

step-by-step explanation:

in triangles abc and adc,

$m\angle abc=m\angle dac$ (as both are right angle) $m\angle bac=m\angle dca$ (alternate interior angle of parallel side ab and dc)

therefore, $\delta abc\sim \delta adc$ (a-a similarity)

so,

$\rightarrow \dfrac{ab}{ac}=\dfrac{ac}{dc}$

$\rightarrow \dfrac{4}{7}=\dfrac{7}{dc}$

$\rightarrow dc=\dfrac{7\times 7}{4}=\dfrac{49}{4}=12.25$

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DIGlBICK9402

06.01.2020

option A) y= 3x²-24x+26 ~apex

Step-by-step explanation:

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