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2 years ago

You have a coupon for 10% off a dvd that cost 15$ if a tax of 8% is charged on the original amount what will you pay for the dvd

Mathematics

1 answer:

Tatiana [17]2 years ago

8 0

Answer:

Should Be 14.58

Step-by-step explanation:

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Yo! Solving linear equations with integers! These are just some practice exercises I need help with! So they should probably be

drek231 [11]

Answer:

Step-by-step explanation:

<h3>Solving linear equation with one variable:</h3>

1) -4 + 3x = 4x - 8

Add 4 to both sides

-4 + 3x + 4 = 4x - 8 + 4

3x = 4x - 4

Subtract 4x from both sides,

3x - 4x = -4x + 4x - 4

-x = -4

$\sf \boxed{\bf x = 4}$

2) -5x - 8 = 2

Add 8 to both sides

-5x - 8 + 8 = 2 + 8

-5x = 10

Divide both sides by (-5)

$\sf \dfrac{-5}{-5}x =\dfrac{10}{-5}$

$\sf \boxed{\bf x = -2}$

3) 12r - 14 = 5(2-r)

12r - 14 = 5*2 - 5*r

12r - 14 = 10 - 5r

Add 14 to both sides

12r - 14 + 14 = 10 - 5r + 14

12r = 24 - 5r

Add 5r to both sides

12r + 5r = 24

17r = 24

Divide both sides by 17

r = 24/17

4) 3x - 8 = -(17 + 2x)

3x - 8 = -17 - 2x

Add 8 to both sides

3x - 8 + 8 = -17 - 2x + 8

3x = -9 - 2x

Add 2x to both sides

3x + 2x = -9

5x = -9

Divide both sides by 5

$\sf \dfrac{5}{5}x=\dfrac{-9}{5}\\\\\boxed{x = \dfrac{-9}{5}}$

3 0

2 years ago

Read 2 more answers

Which expression is equivalent to 9q2-(3q - 7) +5q??<br> ) ?<br> 3

lesantik [10]

$9q^2-(3q - 7) +5q= \\\\=9q^2-3q + 7 +5q= \\\\=9q^2+2q + 7$

3 0

2 years ago

The height, H,of a cylinder is 5 units less than 3 times the radius, R, which expression expresses the height of the cylinder in

Zina [86]

The answer is: [B]: " 3r − 5 " .
_______________________________________________________

H = 3r <span>− </span>5
_______________________________________________________

3 0

3 years ago

I need to know what will be the answer for this function

alexandr1967 [171]

The function or x intercept is 6

7 0

3 years ago

Find the solution set for this equation.<br> a2 + a=0<br> Separate the two values with a comma.

ira [324]

Answer:

a = 0,-1

Step-by-step explanation:

a^2 + a=0

Factor out an a

a(a+1) =0

Using the zero product property

a=0 a+1 =0

a=0 a= -1

6 0

2 years ago