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4 years ago

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How do you solve x^2-1=0 by graphing

1 answer:

marshall27 [118]4 years ago

4 0

If you're able to plug it into your graphing calculator and graph it that way, do that and then find where x=0 (or where it intersects the x axis).

If you can't use your graphing calculator, first recognize it is only a transition from the graph of x^2, which is a parabola having a minimum at (0,0). The "-1" would move the entire graph down one point, therefor the new minimum being at (0,-1). Then find where x=0.

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solniwko [45]

Answer:

probability that the child DOES NOT play the piano

$P(E^{-}) =\frac{4}{5}$

Step-by-step explanation:

A students' choir contains 25 children

n(S) =25

The number of students play the piano =5

Let 'E' be the event of the child play the piano so n(E) =5

The probability of that the child play the piano

$P(E) = \frac{n(E)}{n(S)}$

$P(E) = \frac{5}{25}= \frac{1}{5}$

Let 'E⁻ be the event of the child play does not play the piano

$P(E^{-}) = 1- P(E)$

$P(E^{-}) = 1- \frac{1}{5} =\frac{4}{5}$

<u>Conclusion</u>:-

probability that the child DOES NOT play the piano

$P(E^{-}) =\frac{4}{5}$

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4 years ago

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dybincka [34]

Check the picture below.

let's recall that a square has all equal sides, so the perimeter of the square is about 31, and Alicia has 32 inches of trim, so she's golden.

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3 years ago

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3 years ago

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galben [10]

Answer:

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Step-by-step explanation:

The formula for z test is given above as:

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z = 0.007/√0.0001056

z = 0.007 /0.0102761861

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4 years ago

Jade bought a ring with a diameter of 20 millimeters. What is the circumference.

tatuchka [14]

Answer:

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Step-by-step explanation:

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3 years ago

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