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Alex17521 [72]
2 years ago
11

What is 9% expressed as a decimal?

Mathematics
1 answer:
kakasveta [241]2 years ago
7 0

Answer:

0.09

Step-by-step explanation:

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A triangle has sides with lengths 5, 12, and 13. Verify this is a Pythagorean triple. Approximate the acute angles in this trian
djyliett [7]

A triangle with lengths 5, 12, and 13 is a Pythagorean triple

The approximate acute angles are 22.6° and 67.4°

Pythagorean triple

Pythagorean triple consist of positive number(a, b, c) such that it obeys the rule:

  • c² = a² + b²

A triangle whose sides form a Pythagorean triple is called a right angle triangle.

The longest side is the hypotenuse side.

Therefore,

  • 5² + 12²
  • 25 + 144 = 169
  • √169  = 13

Therefore,

5² + 12² = 13²

This means the triangle is a Pythagorean triple.

<h3>Acute angles</h3>

Acute angles are angles that are less than 90 degrees. This means the other two angles are acute angle.

Therefore, let's find them

  • tan ∅ = opposite / adjacent = tan ∅ = 5 / 12 = ∅ = 22.6198649155 = 22.6°
  • 180 - 22.6 - 90 = 67.4°

learn more on Pythagorean triple here: brainly.com/question/2293263?referrer=searchResults

7 0
2 years ago
Read 2 more answers
28 = 4/5 x - 8 What value of x makes the equation true?​
Harrizon [31]

Answer:

x will have to be 45 to make this true

Step-by-step explanation:

8 0
3 years ago
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Help me please<br> thx so much<br> have a good one
Alona [7]

Answer:

The answer is the last one

Step-by-step explanation:

Hope this helps

7 0
3 years ago
Which expression is equivalent to 7(7y)?
Elis [28]

Answer:

49y

Step-by-step explanation:

7 x 7 x y= 49 x y = 49y

7 0
3 years ago
Sheri's brother gave Sam his collection of stamps when she left for college. At that
pychu [463]

Answer: $70 per year.

Step-by-step explanation:

Let's say that x is the number of years that has passed and y is how much the stamp is worth.

So we know that in zero years the stamp was worth $420 because that is the time Sheri gave her brother Sam the stamp. That could bring up the coordinates  (0,420) .

Now we know that in 8 years it was worth $980 and that could be the coordinates (8,980)

To find the rate of change we need to find the different between the y value and divide it by the difference in the x values.

420 - 980 = -560

 0-8 = -8

-560/-8 = 70

The rate of change is 70 which means that it grew by $70 every year.

6 0
3 years ago
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