3 years ago

4X + 5Y = 21 -4X + 8Y = -8 And X + 5Y = 5 3X - 5Y = 3

1 answer:

6 0

Answer:

for the first one

Step-by-step explanation:

(x,y)=(4,1)

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tekilochka [14]

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Firdavs [7]

Answer:

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Step-by-step explanation:

The given scenario can be drawn as shown in the following attachment.

Given that,

$m\angle DCE=\angle ACB$ and $m\angle DEC=\angle ABC=90^{\circ}$

Therefore, $\Delta ABC\sim \Delta DEC$

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$\Rightarrow \dfrac{AB}{5}=\dfrac{15}{4}$

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schepotkina [342]

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