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3 years ago

Identify the number of zeros for each function P(x) = 8x^2+5-1

Mathematics

1 answer:

Keith_Richards [23]3 years ago

8 0

Answer:

2 zeros

Step-by-step explanation:

Here, we want to identify the number of zeros for the function

The number of zeros a particular function has is dependent on the degree of the function

This particular function is quadratic and has a degree of two

So what this means is that it is expected that the function has two zeros

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Answer:

J (22hrs)

Step-by-step explanation:

812 divided by 14= 58

1,276 divided by 58= 22 hrs

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3 years ago

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Step-by-step explanation:

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3 years ago

The director of the library calculates that 29% of the library's collection is checked out. If the director is right, what is th

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Answer:

The probability that the proportion of books checked out in a sample of 412 books would differ from the population proportion by less than 4% is P=0.9255.

Step-by-step explanation:

The population's proportion is $\pi=0.29$

If we take a sample of 412 books (n=412), we have a standard deviation of the sampling distribution of:

$\sigma_M=\sqrt{\frac{\pi(1-\pi)}{n}}=\sqrt{\frac{0.29*0.71}{412}}=\sqrt{0.0005} =0.0224$

We have to calculate the probabilty that the sample proportion will be between 0.25 and 0.33.

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8 0

4 years ago

Please explain this answer ☹️

GuDViN [60]

Answer:

see explanation

Step-by-step explanation:

Note that cos315° = cos45° and sin315° = - sin45° and

cos45° = sin45° = $\frac{1}{\sqrt{2} }$ = $\frac{\sqrt{2} }{2}$

Hence

12(cos315° + isin315°)

= 12(cos45° - isin45°)

= 12( $\frac{\sqrt{2} }{2}$ - i $\frac{\sqrt{2} }{2}$ )

= 6 $\sqrt{2}$ - 6i $\sqrt{2}$

7 0

3 years ago