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oee [108]
3 years ago
11

Please help! I will give brainliest!

Mathematics
1 answer:
Lunna [17]3 years ago
3 0

Answer:

2nd option

Step-by-step explanation:

trinomial is 2x² + 10x -4 = 0

a = 2

b = 10

c = -4

(-b±√b²-4ac) / 2a

= [-10±√100-4(2)(-4)] / 2

= (-10±2\sqrt{33}) / 4

= (-5+\sqrt{33})/2, = (-5-\sqrt{33})/2  (simplified)

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What other points are on the line of direct variation through (5, 12)? Check all that apply. (0, 0) (2.5, 6) (3, 10) (7.5, 18) (
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we know that

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so

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x=0\ y=0

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<u>case B)</u> point (2.5,6)

x=2.5\ y=6

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<u>case C)</u> point (3,10)

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Substitute the value of x and y in the direct variation equation

10=\frac{12}{5}*3

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<u>case D)</u> point (7.5,18)

x=7.5\ y=18

Substitute the value of x and y in the direct variation equation

18=\frac{12}{5}*7.5

18=18 -------> is true

therefore

the point (7.5,18) is on the line of direct variation

<u>case E)</u> point (12.5,24)

x=12.5\ y=24

Substitute the value of x and y in the direct variation equation

24=\frac{12}{5}*12.5

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the point  (12.5,24) is not on the line of direct variation

<u>case F)</u> point (15,36)

x=15\ y=36

Substitute the value of x and y in the direct variation equation

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the point (15,36) is on the line of direct variation

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<u>the answer is</u>

(0,0)

(2.5,6)

(7.5,18)

(15,36)


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