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3 years ago

12

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1 answer:

Stells [14]3 years ago

3 0

Answer:

$\huge\boxed{width=12cm}$

Step-by-step explanation:

$l-length\\w-width\\P-perimeter$

The formula of perimeter of the rectangle:

$P=2l+2w=2(l+w)$

Substitute:

$l=6w\\\\P=168cm$

$168=2(6w+w)\\168=2(7w)\\168=14w\qquad|\text{divide both sides by 14}\\\\\dfrac{168}{14}=\dfrac{14w}{14}\\\\12=w\Rightarrow w=12(cm)$

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Step-by-step explanation:

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3 years ago

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strojnjashka [21]

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4 years ago

Find the distance between points M and N. and if anyone could kinda explain how they got it so i can do the next ones on my own

WINSTONCH [101]

Answer:

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Step-by-step explanation:

Method #1

We can draw a <em>right triangle</em> on the graph upon where the points are located and use the Pythagorean Theorem:

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* Whenever we talk about distance, we ONLY want the NON-NEGATIVE root.

_______________________________________________

Method #2

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$\sqrt{[3 - 6]^{2} + [0 + 2]^{2}} = D$

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$\sqrt{9 + 4} = D$

$\sqrt{13} = D$

* Whenever we talk about distance, we ONLY want the NON-NEGATIVE root.

** You see? It does not matter which method you choose, as long as you are doing the work correctly.

I am delighted to assist you anytime.

4 0

3 years ago

Read 2 more answers