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3 years ago

8,782 - 4,893 what would it be subtraction

Mathematics

1 answer:

lbvjy [14]3 years ago

8 0

Answer:

3889

Step-by-step explanation:

That is your answer

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(05.02)<br> A line passes through (2, 8) and (4, 12). Which equation best represents the line?

trapecia [35]

We can use the points (2, 8) and (4, 12) to solve.

Slope formula: y2-y1/x2-x1

= 12-8/4-2

= 4/2

= 2

Based on the question, we need to put the equation in slope-intercept form (y = mx + b).

Let's solve for the y-intercept. (We can use the point 2, 8 to solve).

y = 2x + b

8 = 2(2) + b

8 = 4 + b

8 - 4 = 4 + b - 4

4 = b

Now, that we know what the slope and y-intercept is we can put this into the final equation.

y = 2x + 4 (third option)

Best of Luck!

6 0

4 years ago

ou are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on cons

PolarNik [594]

Answer:

$(\frac{4\sigma}{2.056})^2$ , rounded up, if needed, citizens should be included in the sample, in which $\sigma$ is the standard deviation of the population.

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:

$\alpha = \frac{1 - 0.96}{2} = 0.02$

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 $1 - 0.02 = 0.98$ , so Z = 2.056.

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.

Within 4 years of the actual mean

We have to find n for which M = 4. So

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

$4 = 2.056\frac{\sigma}{\sqrt{n}}$

$2.056\sqrt{n} = 4\sigma$

$\sqrt{n} = \frac{4\sigma}{2.056}$

$(\sqrt{n})^2 = (\frac{4\sigma}{2.056})^2$

$n = (\frac{4\sigma}{2.056})^2$

$(\frac{4\sigma}{2.056})^2$ , rounded up, if needed, citizens should be included in the sample, in which $\sigma$ is the standard deviation of the population.

8 0

3 years ago

What is the value of x? sin49°=cosx

olasank [31]

Sin+cos=90
49+cos=90
cos=41

3 0

3 years ago

A summer camp has divided its campers into 8 groups of 9 campers.how many campers are at the summer camp?

Virty [35]

there are 72 campers at the summer camp because if we just multiply 8 times 9 equals 72

5 0

4 years ago