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3 years ago

Complete the table for y = x/4 -1

Mathematics

1 answer:

Sveta_85 [38]3 years ago

4 0

Answer:

X Y

0 -1

2 -0.5

4 0

6 0.5

8 1

Step-by-step explanation:

I hope i got that right

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What is the factor of 4x + 10

Mars2501 [29]

Answer:

2(2x + 5)

Step-by-step explanation:

2 is common to both 4x and 10, so 4x + 10 = 2(2x + 5)

7 0

3 years ago

A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. He wants to construct the 95

Galina-37 [17]

Answer:

The minimum sample size required for the estimate is 345.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

The standard deviation is known to be 1.8.

This means that $\sigma = 1.8$

What is the minimum sample size required for the estimate?

This is n for which M = 0.19. So

$M = z\frac{\sigma}{\sqrt{n}}$

$0.19 = 1.96\frac{1.8}{\sqrt{n}}$

$0.19\sqrt{n} = 1.96*1.8$

$\sqrt{n} = \frac{1.96*1.8}{0.19}$

$(\sqrt{n})^2 = (\frac{1.96*1.8}{0.19})^2$

$n = 344.8$

Rounding up to the next integer:

The minimum sample size required for the estimate is 345.

8 0

3 years ago

How do I find the answer

Talja [164]

When you divide exponents, you just subtract them. the answer to this equation is a^2 (a squared). This is because 8-6 = 2. Conversely, if you were multiplying two terms with exponents you would add the exponents together. For example: a^3 * a^2 = a^5, because 3 + 2 = 5

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rodikova [14]

I believe it would be 3/8

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Complete the sentences regarding demand. The demand for ________ goods increases with a decrease in income, whereas _________ ar

Dominik [7]

Answer:

Inferior, Public

Step-by-step explanation:

Complete the sentences regarding demand. The demand for inferior goods increases with a decrease in income, whereas public are goods that cannot be bought or sold.

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4 years ago

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