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3 years ago

8f(x)=x

Mathematics

1 answer:

victus00 [196]3 years ago

6 0

Answer:

-2 and -4

Step-by-step explanation:

Given the function f(x) = x² + 6x + 8

If f(x) = 0

x² + 6x + 8 = 0

Factorize

x² + 4x + 2x+ 8 = 0

x(x+4)+2(x+4) = 0

(x+2)(x+4) = 0

x+2 = 0 and x+4 = 0

x = -2 and -4

Hence the zero of the function is -2 and -4

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3 years ago

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If the discriminant of a quadratic equation is equal to -8, which statement describes the roots'

OlgaM077 [116]

If the discriminant of a quadratic equation is equal to -8, there are two complex roots.

<h3>Discriminant of a quadratic equation</h3>

The discriminant is used to determine the nature of quadratic equations.

The formula for calculating discriminant is given as:

D = b^2 - 4ac

If the discriminant is negative, it means that the nature of the solution will be a complex number.

Hence if the discriminant of a quadratic equation is equal to -8, there are two complex roots.

Learn more on discriminant here: brainly.com/question/2507588

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2 years ago

Suppose a diver dove from a diving platform 4 feet above the water and stopped at –8 feet to pick up some scallops. Which expres

lapo4ka [179]

Answer: Option D.

Step-by-step explanation:

By definition, the absolute value of a number is its distance from 0 on a number line. We know that the distances cannot be negative. Then:

$|-a|=a$

We can assume that the water is at level 0.

We know that the diver dove from a diving platform, which is 4 feet above the water, and then she stopped at -8 feet to pick up some scallops.

This indicates that she stopped at 8 feet below the water.

Therefore, in order to find how far below the diving platform the diver is, we must add 4 feet and the absolute value of -8 feet.

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4 years ago

victus00 [196]

Answer:

A week is 7 days so if she spends 3 hours a day that 21 hours during a whole week. Since we are trying to find 4 weeks we multiply by 4

21*4=84

Hope This Helps!!!

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2 years ago

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