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3 years ago

FOIL Multiply and Simplify ! 2(4x+7)(x−1)

1 answer:

7 0

<span>2(4x+7)(x−1)
= 2(4x</span>² - 4x + 7x - 7)
= 2(4x² + 3x - 7)
= 8x² + 6x - 14

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aleksandrvk [35]

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Alik [6]

Cos 28 = 18/ y
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SSSSS [86.1K]

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4vir4ik [10]

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Step-by-step explanation:

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2 years ago

Lapatulllka [165]

Answer:

$CD=4 \text{ cm }$

Step-by-step explanation:

We have a similarity of triangles. Once the side BC and ED are parallel,

$\frac{BC}{AC} =\frac{ED}{AD}$

$\frac{10}{AC} =\frac{5}{4}$

Once $AC=AD+CD \Rightarrow AC=4+CD$

$\frac{10}{4+CD} =\frac{5}{4}$

$5CD+20=40$

$5CD=20$

$CD=4 \text{ cm }$

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3 years ago