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lesya692 [45]
3 years ago
13

Guys help plz I’m giving Brainliest.

Mathematics
2 answers:
professor190 [17]3 years ago
5 0

Answer:

$21.60

Step-by-step explanation:

DanielleElmas [232]3 years ago
3 0

Answer:

The hat originally without the discount would be 19 or 20 dollars 20.00

Step-by-step explanation:

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Which best describes the relationship between the lines? 2x – y = −7 2x + 4y = 2
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Answer:

Perpendicular

Step-by-step explanation:

2x - y = -7

2x + 4y = 2

-y = -2x - 7

4y = -2x + 2

y = 2x + 7

y = -1/2x + 1/2

Cannot be:

Parallel because the slope would otherwise be the same.

Same line because the equation is not proportional

So, they are perpendicular because a perpendicular line would be a negative and a reciprocal of the current line

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What is the center and radius of a circle whose equation is x2 + y2 -2x -6y -5 = 0?
ddd [48]

x²+y²-2x-6y-5=0

x²-2x+y²-6y=5

x²-2x+1+y²-6y+9=5+1+9

(x-1)²+(y-3)²=15

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-> centre of the circle: C(-1,-3)

-> radius of the circle: V15

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Step-by-step explanation:

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