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2 years ago

Put the following equation of a line into slope intercept form simplifying all fractions 20x + 8y = 64

Mathematics

2 answers:

san4es73 [151]2 years ago

7 0

Answer:

y=-5/2x+3

Step-by-step explanation:

Furkat [3]2 years ago

4 0

Answer:

y = -5/2x + 8

Step-by-step explanation:

20x + 8y = 64

-20x -20x

---------------------------

8y = -20x + 64

/8 /8

----------------------------

y = -5/2 + 8 ------> slope intercept form

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Suppose 3/4 is a root of a polynomial equation. what does this tell us about the leading coefficient and the constant term in th

snow_tiger [21]

Answer:

Nothing new about leading coefficient. Definition says it can't be zero. It can always be made equal to one by dividing through.

Constant term cannot be zero unless a root is zero.

Step-by-step explanation:

x-3/4 = 0 has root 3/4 constant term -3/4

(x-3/4)(x-b) = 0 has roots 3/4 and b, constant term 3b/4 which is zero only if b is zero.

(x-3/4)(x-b)(x-c) = 0 has roots 3/4, b, c, constant term -3bc/4 which is zero only if b or c is zero.

Etc. ...

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2 years ago

Please help me with this

kondaur [170]

For number 1a. the answer is 7 to 26 or
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$\frac{12}{13}$
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$\frac{19}{12}$
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3 years ago

4)In order to set rates, an insurance company is trying to estimate the number of sick daysthat full time workers at an auto rep

bagirrra123 [75]

Answer:

A sample of 18 is required.

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:

$\alpha = \frac{1 - 0.92}{2} = 0.04$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.04 = 0.96$ , so Z = 1.88.

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.

A previous study indicated that the standard deviation was 2.2 days.

This means that $\sigma = 2.2$

How large a sample must be selected if the company wants to be 92% confident that the true mean differs from the sample mean by no more than 1 day?

This is n for which M = 1. So

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

$1 = 1.88\frac{2.2}{\sqrt{n}}$

$\sqrt{n} = 1.88*2.2$

$(\sqrt{n})^2 = (1.88*2.2)^2$

$n = 17.1$

Rounding up:

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2 years ago

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2 years ago

Put the following equation of a line into slope intercept form simplifying all fractions 20x + 8y = 64​

Put the following equation of a line into slope intercept form simplifying all fractions 20x + 8y = 64