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Tamiku [17]
3 years ago
10

Circle the numbers that are correctly written in scientific notation and place an X over the numbers that are not

Mathematics
1 answer:
Oduvanchick [21]3 years ago
6 0
X x true true x true true x
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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

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2 years ago
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Find the difference. 4 and two-fifths minus 1 and seven-tenths equals what number?
Varvara68 [4.7K]

Answer:

I believe it's B or C.

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What is the value of the expression 11 − (fraction 1 over 2)4 ⋅ 48?<br> 3<br> 5<br> 8<br> 9
olga55 [171]
11-\left(\dfrac{1}{2}\right)^4\cdot48=11-\dfrac{1}{2^4}\cdot48=11-\dfrac{1}{16}\cdot48=11-\dfrac{48}{16}=11-3=8
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I’ll give points + brainalist for the correct answer (:
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Peristalsis

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between 3 and 4 would be 3.5cm

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