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yan [13]
1 year ago
11

Ex. 11 An apple computer has a retail price of $1000. Jim's House of Electronics is having a "20%-off sale",

Mathematics
1 answer:
Elina [12.6K]1 year ago
8 0
He would have to pay $560 because if you take 20% off of the computer using the equation 1000 - (1000 * 0.20) you get 800. This means that the 30% coupon is applied to $800, so using the same template as the equation above, we can do 800 - (800 * 0.30) to get a final answer of 560.
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3 years ago
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Ratling [72]

x = 3

2x + y - z = 3 → (1)

- x + y + 2z = 0 → (2)

3x + 2y + z = 9 → (3)

we require to eliminate the y and z terms from the equations

(1) + (3) : 5x + 3y = 12 → (4)

multiply (1) by 2

4x +2y - 2z = 6 → (5)

(2) + (5) : 3x + 3y = 6 → (6)

(4) - (6) : 2x = 6 ⇒ x = 3


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In a nominal level of measurement, we are just classify the type of a variable. In this case, we are assigning a specific brand type to a particular cereal.
8 0
3 years ago
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I think it might be 456
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2 years ago
Read 2 more answers
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