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sleet_krkn [62]
3 years ago
12

2x²+12x-7 =0 (completing the square) give your answer to 2 decimal places

Mathematics
1 answer:
guapka [62]3 years ago
8 0

Answer:

x1 = 0.54

x2 = –6.55

Step-by-step explanation:

use the calculator

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What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br><br> _____ units
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Answer:

x=28

Step-by-step explanation:

We can use similar triangles and proportions to solve this problem.  Put the side of the small triangle over the same side of the larger triangle.

x               42

---------- = ----------

x+10           42+15

Simplify

x               42

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Using cross products

57x = 42 (x+10)

Distribute

57x = 42x+420

Subtract 42x from each side

57x-42x = 42x-42x +420

15x = 420

Divide each side by 15

15x/15 = 420/15

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Answer/Step-by-step explanation:

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Its the last option because anything between 0 to 1 would he smaller than the original
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How many tickets with different points of origin and destination can be sold on a bus line that travels a loop with 20 ​stops?
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Answer:

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Step-by-step explanation:

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The upward zero-crossing is seen to be at -1, so this function has been shifted left 1 unit. This requires we replace x with x+1:

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