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elixir [45]
3 years ago
15

Questions 11 & 12, with an explanation - if possible!!

Mathematics
1 answer:
IrinaVladis [17]3 years ago
5 0
X² - 3x - 2 = 0
x = -(-3) ± √((-3)² - 4(1)(-2))
                     2(1)
x = 3 ± √(9 + 8)
              2
x = 3 ± √(17)
           2

4x² + 3x + 5
b² - 4ac
(3)² + 4(4)(5)
9 + 4(20)
9 + 80
89
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2 5/9 is less than 21/3;  2 5/9 < 21/3

Step-by-step explanation:

<u>Step 1:  Convert 2 5/9 into an improper fraction</u>

2 5/9 = 2 * 9/9 + 5/9 = 18/9 + 5/9 = 23/9

<u>Step 2:  Convert 21/3 so the denominator is 9</u>

21*3 / 3*3 = 63/9

<u>Step 3:  Compare</u>

<em>23/9 < 63/9</em>

<em />

Answer:  2 5/9 is less than 21/3;  2 5/9 < 21/3

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Equation of line 2:

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