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3 years ago

Help please thank you.

Mathematics

1 answer:

Shkiper50 [21]3 years ago

5 0

$3 \sqrt{5} + 6 \sqrt{9} \sqrt{5}$
$3 \sqrt{5}+6 \sqrt{45}$
$3 \sqrt{5}+6*3 \sqrt{5}$
$3 \sqrt{5} + 18 \sqrt{5} = 21 \sqrt{5}$

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2 years ago

Combine likes terms to create an equivalent expression 1/7 - 3(3/7h -2/7)

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$\frac{1}{7} -3(\frac{3}{7}h -\frac{2}{7}) = \frac{7-9h}{7}$

Solution:

Given expression is:

$\frac{1}{7} -3(\frac{3}{7}h -\frac{2}{7})$

We have to combine the like terms

From given expression,

$\frac{1}{7} -3(\frac{3}{7}h -\frac{2}{7})$

By distributive property,

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Solve for brackets using distributive property

$\frac{1}{7} - (3 \times \frac{3}{7}h) + (3 \times \frac{2}{7})\\\\\frac{1}{7} - \frac{9h}{7} + \frac{6}{7}$

Add 1/7 and 6/7

$\frac{1}{7} + \frac{6}{7} -\frac{9h}{7}\\\\\frac{1+6}{7} -\frac{9h}{7}\\\\Simplify\\\\\frac{7}{7}-\frac{9h}{7}\\\\1-\frac{9h}{7}\\\\Simplify\\\\\frac{7-9h}{7}$

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Step-by-step explanation:

It is parallel to the third side and has a length equal to half the length of the third side.

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