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Eduardwww [97]
3 years ago
9

80 is 25% of what number

Mathematics
1 answer:
serious [3.7K]3 years ago
6 0
<span>The number 80 is <span>25%</span> of <span>320</span></span>
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Convert (-6, -6) from Cartesian coordinates to polar coordinates. Round the length to the nearest 0.01 Express the
Neko [114]

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Answer:

  (8.49; 225°)

Step-by-step explanation:

The angle is a 3rd-quadrant angle. The reference angle will be ...

  arctan(-6/-6) = 45°

In the 3rd quadrant, the angle is 45° +180° = 225°.

The magnitude of the vector to the point is its distance from the origin:

  √((-6)² +(-6)²) = √(6²·2) = 6√2 ≈ 8.4859 ≈ 8.49

The polar coordinates can be written as (8.49; 225°).

_____

<em>Additional comment</em>

My preferred form for the polar coordinates is 8.49∠225°. Most authors use some sort of notation with parentheses. If parentheses are used, I prefer a semicolon between the coordinate values so they don't get confused with an (x, y) ordered pair that uses a comma. You need to use the coordinate format that is consistent with your curriculum materials.

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3 years ago
40% of students on a field trip love the museum. If there are 20 students on the field trip, how many love the museum??
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Since there are 20 students on the field trip. Then 20 is the 100% total. Thus, to find how many people love the museum, we can simply multiply the total number of people by the percentage of interest, namely 40%

20*0.4 = 8
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3 years ago
The calculation of property tax is based on the
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What is the equation of the graphed line written in standard form?
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Answer:

The answer is A)x = –3

Step-by-step explanation:

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Read 2 more answers
Help i can’t find this answer anywhere.
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Answer:

B, I think that's the answer

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