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3 years ago

One fifth as a percentage

1 answer:

4 0

When dealing with percentages it is often much easier to convert it to a decimal (mostly because a lot of people are uncomfortable working with fractions) but in this case, I suggest dividing 1 into 5 [hint hint fractions are just glorified division in the long run] and after you have done that multiply by 100. This will get you your answer.

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Rationalise the denominator.

grin007 [14]

Let's see what to do buddy...

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To do this, we have to multiply the face and denominator of the fraction by the denominator conjunction, which is :

$(5 -\sqrt{2})$

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Reminder :

$(a + b)(a - b) = {a}^{2} - {b}^{2} \\$

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So we have :

$\frac{1}{ 5-\sqrt{2} } \times \frac{ 5+\sqrt{2} }{ 5 +\sqrt{2} } = \frac{1 \times ( 5 +\sqrt{2}) }{(5- \sqrt{2} )( 5 +\sqrt{2}) } = \\$

The other is in the photo.

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And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

7 0

3 years ago

What is the answer for e

Flauer [41]

-4 is the correct answer

5 0

3 years ago

Harry buys a waffle maker priced at $48. If the sales tax is 9%, how much tax will Harry pay?

Klio2033 [76]

Answer:

2325

Step-by-step explanation:

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8 0

3 years ago

Find two ratios equivalent to each ratio 3:11

DanielleElmas [232]

Answer:

Multiplying each side by 5⇒ 15: 55

Multiplying each side by 10⇒30:110

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Irene places a mirror on the ground 24ft away from the base of an oak tree. She walks backward until she can see the top of the

soldier1979 [14.2K]

First, illustrate the problem:

24 feet is the distance between the tree and the mirror.
4 feet is the distance from Irene's eyes to the mirror.
5.5 feet is the distance of Irene's eyes from the ground.
4 feet is the distance of Irene from the mirror

From this, we can draw a right triangle and then use the Pythagorean theorem to solve for the height of the oak tree. Also, we have an option to use ratio and proportion between two similar triangles.

3 0

3 years ago