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julsineya [31]
3 years ago
9

15+7r+r(r-3)-r^2 simplified

Mathematics
2 answers:
daser333 [38]3 years ago
8 0

Answer:

15 + 4r

Step-by-step explanation:

15+7r+r(r-3)-r²

15 + 7r + r² - 3r - r²

15 + 4r

defon3 years ago
6 0

Answer:

15+4r

Step-by-step explanation:

15+7r+r(r-3)-r^2

Distribute

15+7r+r^2-3r-r^2

Combine like terms

15+7r-3r+r^2-r^2

15 +4r

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Step-by-step explanation:

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elena55 [62]

Answer:

Therefore 20 degree is in First Quadrant,

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Step-by-step explanation:

QUADRANT:

When the terminal arm of an angle starts from the x-axis in the anticlockwise direction then the angles are always positive angles.

Quadrant I      -          0° to 90°

Quadrant II     -       90° to 180°

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Quadrant IV    -      270° to 360°

Therefore 20 degree is in First Quadrant, i.e Quadrant I.

When the terminal arm of an angle starts from the x-axis in the clockwise direction than the angles are negative angles.

Quadrant IV  -          0° to -90°

Quadrant III   -       -90° to -180°

Quadrant II    -      -180° to -270°

Quadrant I     -      -270° to -360°

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