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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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Y = -2x + 13 when x = 6
elena-14-01-66 [18.8K]

Answer: 1

Work: After plugging in the 6 in the X, the new equation is -2(6) + 13. After doing the multiplication of -2 and 6, you get -12. Add -12 + 13, and the answer (Or y) equals 1.

<em>I hope this helps, and Happy Holidays! :)</em>

6 0
3 years ago
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Principal- $900, interest rate ordinary- 4%, term (days)- 45. find the interest
kirill [66]

Answer:

hope this helps to find the interest

Step-by-step explanation:

450

4 0
3 years ago
Peter spent half the money on his gift card and coffee and he loaded another $10 on the gift card how much was on the gift card
cestrela7 [59]

Answer:

$80 was on the gift card to begin with

Step-by-step explanation:

Let the initial money be x

Peter spent (1/2)*x

Peter added 10

<em>Before adding more money on the gift card Peter had x -(1/2)x left on the gift card which is (1/2)x</em>

<em>After loading more money Peter had (1/2)x + 10</em>

(1/2)x = 40 <em>(money spent by Peter)</em>

x/2 = 40

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6 0
3 years ago
Solve the following equation
Gnoma [55]
40x+8x^2=0 can be solved for x (there are two solutions):

Divide all 3 terms by the greatest common multiple (which is 8x):

40x+8x^2=0
------------- -----
       8x       8x

5 + x = 0             produces the root x = - 5.   

Setting 8x = 0 and solving for x produces the root x = 0.

Be certain to check these results.  substitute x = -5 into 40x+8x^2=0.  Is the resulting equation true or false?  Next, subs. x=-5 into 40x+8x^2=0.  Is the resulting equation true or false?
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Bryan wants to convert a speed of 85 kilometers per hour into the speed in meters per second what is the correct conversion
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Answer:

23.6111

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Step-by-step explanation:

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3 years ago
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