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NemiM [27]
3 years ago
13

A smartphone costs ​$280. Sales tax is 8​%. What is the total​ cost, including​ tax

Mathematics
1 answer:
oee [108]3 years ago
5 0

Answer:

it should cost 302.40$ all together

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Solve the equation. 2x − 3 4x = 21 x = −12 x = −6 x = 4 x = 6
luda_lava [24]

The solution of the equation after solve the equation, 2x − 3 4x = 21 is 4. Option 3 is correct.

<h3>How to obtain the solution of equation?</h3>

To obtain the solution of an equation, the similar terms should be arranged together and then mathematical operation need to be performed to simplify it.

The equation which is provided to solve is,

2x - 3 +4x = 21

To solve this equation, arrange the like terms as,

2x - 3 +4x = 21\\2x +4x - 3 = 21\\6x-3=21

Add number 3 both side of the equation as,

6x-3+3=21+3\\6x=24

Divide both side of the equation with number 6, we get,

x=\dfrac{24}{6}\\x=4

Hence, the solution of the equation after solve the equation, 2x − 3 4x = 21 is 4. Option 3 is correct.

Learn more about the solution of the equation here;

brainly.com/question/21283540

6 0
2 years ago
Please Help!!!
Sliva [168]
You would set up equations for both the member and the non-member.
The member's equation would be: 384+8x (x being the number of rounds)
The non-member's equation would be: 48x+24x
then you would set them equal to each other and then solve:
384+8x=48x+24x
384=64x
384/64=x
x=6
they would have to play 6 rounds in order to pay the same amount.
7 0
4 years ago
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