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2 years ago

Enter an inequality that represents the phrase "the sum of 4 and y is less than 6." Draw a graph that represents the inequality.

Mathematics

1 answer:

mr_godi [17]2 years ago

3 0

9514 1404 393

Answer:

4 + y < 6

see attached for a graph

Step-by-step explanation:

The English description "the sum of A and B" is written symbolically as ...

A + B

The symbol for "is less than" is <.

Then "the sum of 4 and y is less than 6" will be written ...

4 + y < 6

The solution to this is found by subtracting 4 from both sides of the inequality:

4 +y -4 < 6 -4

y < 2 . . . . . . . . . simplified solution

The graph of this is a number line with an open circle at y=2, and shading to the left of that point, where values on the number line are less than 2.

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Vedmedyk [2.9K]

Answer:

Each piece will be 3.125m long.

Step-by-step explanation:

To find this, divide the amount of ribbon you have by the amount of pieces that you need.

25m/8pieces = 3.125m per piece

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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:

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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

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$\sqrt{n} = 1.88*2.2$

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3 years ago

Another One I need help withhhh sorrry

Effectus [21]

Answer:

y = 2x+3

Step-by-step explanation:

Sorry I'm probably too late since Quizziz doesn't wait unless you have the freeze timer thing.

y = mx+b

b is the y intercept. The y intercept (when x=0) is given in the table.

Now plug a coordinate in to solve for m.

My coordinates: (1,5)

5 = m + 3

Solve.

2 = m

m = 2

Note: never plug in the y intercept when looking for m.

You can also find the slope by (subtracting the y value of one coordinate from another y value of another coordinate)/(subtracting x value from the first y coordinate above from the x value from the second coordinate).

In this case, it'd be

m = (7-5)/(2-1)

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3 years ago

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3 years ago