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Tju [1.3M]
3 years ago
11

Solve this system of equations algebraically:

Mathematics
2 answers:
Leona [35]3 years ago
6 0
Y - 10 = 11 x + x²
y - 12x = 30
____________
y = 12 x + 30
12 x + 30 - 10 = 11 x + x²
x² - x - 20 = 0
x (12) = 1+/- √ (1 + 80 ) /2
x 1 = (1 - 9) / 2 = -4
x 2 = ( 1 + 9 ) /2
x 2 = 5
y 2 = 30 + 12 · 2 = 30 + 60 = 90
The second solution is:
( 5, 90 ).  
Radda [10]3 years ago
4 0

Answer:

The second solution is 5,90

Step-by-step explanation:

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Answer: \approx8*10^{-3}

Step-by-step explanation:

In order to round to the nearest thousandth, you must observe the digit to the right of the digit in the thousandth place and then:

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In this case, given the number:

0.00792398

You can notice that the digit to the right of the digit in the thousandth place is 9.

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0.00792398\approx0.008

Finally, to express this as a single-digit times a power of ten, move the decimal point three places to the right. Then you get:

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What is the sales tax of a $178.90 video game system is the tax rate is 3.75%
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