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horrorfan [7]
4 years ago
12

Find the roots of the equation below.7^x2 + 3 = 8x​

Mathematics
1 answer:
stiv31 [10]4 years ago
4 0

Answer:

x = \frac{4}{7}

Step-by-step explanation:

7x² + 3 = 8x

7x² - 8x + 3 = 0

Applying the quadratic formula;

x = (8 ± \sqrt{64 - 64}) ÷ 2(7)

x = (8 ± 0) ÷ 2(7) = \frac{4}{7}

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Answer:

True

Step-by-step explanation:

2x+5=x-3 is (-8)

This is the correct answer

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Find the approximate values of real numbers up-to-three decimal places.
Lynna [10]

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Answer:

  • √51 ≈ 7.141
  • 1313/9900 ≈ 0.133
  • ∛971 ≈ 9.902

Step-by-step explanation:

The usual rules of rounding apply. If the digit in the 4th decimal place is 5 or more, then 1 is added in the 3rd decimal place. The roots are found using your calculator. The first 4 digits of the repeating decimal are clearly visible already.

a) √51 ≈ 7.141428... ≈ 7.141

b) 0.1326_26 ≈ 0.133

c) ∛971 ≈ 9.90238... ≈ 9.902

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<em>Additional comment</em>

The repeating decimal is equivalent to the fraction 1313/9900.

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3 years ago
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mestny [16]

Answer:

<em>.5, 3, 8.5</em>

Step-by-step explanation:

  1. Divide the minutes by 2 since 6 is half of 12.
  2. Half of 1 is .5 or \frac{1}{2}
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If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.

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the first one

Step-by-step explanation:

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