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3 years ago

How many x-intercepts are in the quadratic equation y = 7x2 − 2x − 1

Mathematics

1 answer:

babunello [35]3 years ago

7 0

Answer:

There are 2 x intercepts

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Answer:

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HELP PLEASE! DUE TMR! Answer whichever ones you want and i can try to deal with the rest. I just have alot of work and need extr

Yuri [45]

Answers

1) 4

2) 0, 2, -10

3) 0, 5, -2

Step-by-step explanation:

1) x³ - 64 = 0

x³ = 64

x = 4

2) x³(x² + 8x - 20) = 0

x³(x² + 10x - 2x - 20) = 0

x³(x(x + 10) - 2(x + 10)) = 0

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3) x³ - 3x² - 10x = 0

x(x² - 3x - 10) = 0

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3 years ago

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zheka24 [161]

2.48 can be rounded pretty much any number between 2.45 to 2.5
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Dvinal [7]

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Step-by-step explanation:

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3 years ago

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V125BC [204]

Answer:

AB = 16 Units

Step-by-step explanation:

In the given figure, CD is the diameter and AB is the chord of the circle.

Since, diameter of the circle bisects the chord at right angle.

Therefore, AE = 1/2 AB

Or AB = 2AE...(1)

Let the center of the circle be given by O. Join OA.

OA = OD = 10 (Radii of same circle)

Triangle OAE is right triangle.

Now, by Pythagoras theorem:

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3 years ago

How many x-intercepts are in the quadratic equation y = 7x2 − 2x − 1​

How many x-intercepts are in the quadratic equation y = 7x2 − 2x − 1