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3 years ago

The scale on a map is 1 inch = 2 1/2 miles. If two landmarks on the map

1 answer:

6 0

Hi, first thing to do is divide 2.5 by 4 which is 0.625and you can either multiply 0.625 by three or subtract it from 2.5. So the answer comes out to be 1.875. You’re welcome and have a nice day

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The equation y = 4x represents the relationship between time, x, and distance traveled, y. Which table represents this

Kruka [31]

Answer:

Step-by-step explanation:

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4 0

3 years ago

If a manufacturer conducted a survey among randomly selected target market households and wanted to be 95% confident that the d

katen-ka-za [31]

Answer:

We need a sample size of least 119

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Sample size needed

At least n, in which n is found when $M = 0.09$

We don't know the proportion, so we use $\pi = 0.5$ , which is when we would need the largest sample size.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.09 = 1.96\sqrt{\frac{0.5*0.5}{n}}$

$0.09\sqrt{n} = 1.96*0.5$

$\sqrt{n} = \frac{1.96*0.5}{0.09}$

$(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.09})^{2}$

$n = 118.6$

Rounding up

We need a sample size of least 119

6 0

3 years ago

Explain the advantages and disadvantages of a non-linear rate structure.<br>Please, help!

zhannawk [14.2K]

Answer:

advantage: it uses memory very efficiently than linear data structures

disadvantages: Non - linear data structures are quite hard to understand and implement than linear data structures

8 0

2 years ago

If r = 6 units and h = 8 units, what is the volume of the cylinder shown above? Use 3.14 for .

MariettaO [177]

Answer:

the volume of the cylinder is 904.32 m³

Step-by-step explanation:

Volume of a cylinder is $\pi r^{2}h$

π = 3.14

r = 6 units

h - 8 units

Substitute for the values in the volume equation

V = 904.32

6 0

2 years ago

The distance between points (1, 1) and (4, 7) is 6.71. is it true or false

svet-max [94.6K]

To determine whether the statement is true or false, we need to calculate for the distance of the two points. To do this, we can use the pythagorean theorem as follows:

d = √[(y2-y1)^2 + (x2-x1)^2]
d = √[(7-1)^2 + (4-1)^2]
d = √[(6)^2 + (3)^2]
d = 2√13 = 7.21

Therefore, the statement is false.

3 0

3 years ago