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2 years ago

Solve each equation by completing the square NEED THIS IN 10 MINS WILL GIVE BRAINLIEST

Mathematics

1 answer:

yulyashka [42]2 years ago

4 0

Answer:

Step-by-step explanation:

7(b² - 2b - 8) = 0

7(b² - 2b + ) = 8

7(b² - 2b + 1) = 8 + 1

7(b - 1)² = 9

(b - 1)² = 9/7

b - 1 = ±√(9/7)

b = 1 ±3√(1/7)

b ≈ -0.134, 2.134

m² + 10m + 14 = -7

m² + 10m + = -7 - 14

m² + 10m + 25 = -7 - 14 + 25

(m + 5)² = 4

m + 5 = 2

m = -3

p² - 8p + 21 = 6

p² - 8p + = 6 -21

p² - 8p + 16 = 6 -21 + 16

(p - 4)² = 1

p - 4 = 1

p = 5

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Shtirlitz [24]

Answer:

The probability will be "0.0111".

Step-by-step explanation:

The given values are:

Mean,

$\mu$ = 79

Standard deviation,

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Now,

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$= \frac{3.5}{\sqrt 16}$

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So,

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2 years ago

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kherson [118]

Answer:

Step-by-step explanation:

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2 years ago

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AnnZ [28]

Answer:

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Step-by-step explanation:

I=PRT

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2 years ago

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zaharov [31]

Answer:

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Step-by-step explanation:

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aalyn [17]

Answer:

Step-by-step explanation:

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