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docker41 [41]
3 years ago
10

$1725 couch with a 15% markup

Mathematics
1 answer:
Sloan [31]3 years ago
8 0
1725+1725x0.15=t
1725+258.75=t
1983.75=t

The total cost of the couch is $1983.75
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What is the least possible degree of a polynomial that has roots -5, 1+4i, and -4i
N76 [4]
If complex coefficients are allowed, the answer is 3.

If the polynomial must have real coefficients, then each complex root comes as a pair of complex conjugate roots.

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6 0
2 years ago
0.2x + 0.3y = 1.3.<br>0.4r + 0.5y = 2.3. solve by using substitution ​
Alexxandr [17]

Answer:

x=2, y=3.

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0.2x + 0.3y = 1.3

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Substituting in second equation:

0.4x + 0.5(1.3 - 0.2x) / 0.3 = 2.3

Multiply through by 0.3:

0.12x + 0.5(1.3 - 0.2x) =  0.69

0.12x + 0.65 - 0.1x = 0.69

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Check in equation 2:

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- Correct.

4 0
3 years ago
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