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lina2011 [118]
3 years ago
9

What is 2A? A= [4 9 13 5]

Mathematics
1 answer:
Ierofanga [76]3 years ago
4 0

Answer:

Multiply each entry by 2!

Step-by-step explanation:

Multiplying a matrix by a constant means to multiply each entry by that constant.

According to that, 2A would be the result of each entry being multiplied by 2.

That is equal to $ 2A = \begin{pmatrix}2(4) & 2(9) \\2(13) & 2(5) \\\end{pmatrix}

$ \implies 2A = \begin{pmatrix}8 & 18 \\26 & 10 \\\end{pmatrix}

Hence, the answer.

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Answer:

Height of tree 3 years ago: 24 inches

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So on average it grew 10 INCHES PER YEAR.

Let me know if this helps!

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2 years ago
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The horizontal distance from the base of the skyscraper out to the ship is 485.2 feet.

<h3>What is trigonometric ratio?</h3>

Trigonometric ratio is used to show the relationship between the sides and angles of right angled triangle.

Let d represent the horizontal distance from the base of the skyscraper out to the ship. Since the angle of depression is 67°, hence:

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Using trig ratio:

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The horizontal distance from the base of the skyscraper out to the ship is 485.2 feet.

Find out more on trigonometric ratio at: brainly.com/question/24349828

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2 years ago
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Sure hope this helped you, have a good day! =)

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