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dsp73
3 years ago
10

The sum of the digits of a two digit number is 10. If 36 is subtracted from the number, the digit interchange their places Find

the number​
Mathematics
1 answer:
lianna [129]3 years ago
3 0

Step-by-step explanation:

Let A be the tens digit of the number and B be the ones digit.

We have A + B = 10 and 10A + B - 36 = 10B + A.

=> A + B = 10 and 9A - 36 = 9B

=> A + B = 10 and A - 4 = B

=> A + B = 10 and A - B = 4

Therefore 2A = 10 + 4 = 14,

A = 7 and B = 10 - 7 = 3.

Hence the number is 73.

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Answer:

  (8.49; 225°)

Step-by-step explanation:

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

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

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

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<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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2 years ago
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Answer:

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Subtract 4 from −3

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Raise −7 to the power of 2

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