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Andru [333]
3 years ago
7

A shop owner offerad a 20% discount off the regular price of a mirror. The amount of the discount is 3$ what is the regular pric

e of the mirror?
Mathematics
1 answer:
Troyanec [42]3 years ago
3 0

Answer:

$15

Step-by-step explanation:

$3 correspond is the 20% discount of the total price.

If the total price is x then you can express the discount as:

0.20x = 3

x = 3/0.20

x = 15

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20×^2-30x-40 solve for x
Oduvanchick [21]

Answer:

x = 12

Step-by-step explanation:

Solve for x:

360 - 30 x = 0

Subtract 360 from both sides:

(360 - 360) - 30 x = -360

360 - 360 = 0:

-30 x = -360

Divide both sides of -30 x = -360 by -30:

(-30 x)/(-30) = (-360)/(-30)

(-30)/(-30) = 1:

x = (-360)/(-30)

The gcd of 360 and -30 is 30, so (-360)/(-30) = (-(30×12))/(30 (-1)) = 30/30×(-12)/(-1) = (-12)/(-1):

x = (-12)/(-1)

(-12)/(-1) = (-1)/(-1)×12 = 12:

Answer:  x = 12

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3 years ago
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11.68 - 0.48 ÷ (-1.6) = <br><br> need help I need a way to solve this problem
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Step-by-step explanation:

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ahh this is the correct answer.

so if it helps don't forget to like and Mark me.

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Step-by-step explanation:

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