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2 years ago

The vertex form of the equation of a parabola is y=2(x+4)^2-7. What is the standard form of the equation.

Mathematics

1 answer:

Elan Coil [88]2 years ago

6 0

Answer:

Step-by-step explanation:

To obtain the standard form of the equation of the parabola y=2(x+4)^2-7, first perform the indicated operations:

y = 2[x^2 + 8x + 16 - 7], or

y = 2[x^2 + 8x + 9],

or y = 2x^2 + 16x + 18

None of the given possible answers match. The fourth one, D, is closest to the above result, differing only in the constant term (25 versus 18).

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2 years ago

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kobusy [5.1K]

Answer:

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2 years ago

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Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with mea

Anika [276]

Answer:

About 3 years Speedy Jet printers be guaranteed.

Step-by-step explanation:

Given : Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with

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If the company wishes to replace no more than 10% of the printers.

To find : How long should Speedy Jet printers be guaranteed ?

Solution :

Using Z- table,

Z value corresponding to 10% or 0.10 = -1.28.

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$z=\frac{x-\mu}{\sigma}$

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$x=(z\times \sigma)+\mu$

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So, approx 3 years.

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2 years ago

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