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zloy xaker [14]
3 years ago
10

The scale on a map is 1 inch represent 6 miles a road on the map measures 2.5 inches.How long is the road in real life?

Mathematics
1 answer:
Bogdan [553]3 years ago
5 0
A road on the map measures 2.5 inches will be 15 miles long road in real life
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Someone pls help me it would be amazing thank u a lot
Ivenika [448]

Answer:

36.87°

Step-by-step explanation:

With reference angle C

perpendicular (p) = 27

base(b) = 36

Now

Tan C = p/b

Tan C = 27/36

C = tan ^-1( 27/36)

= 36.87°

Hope it helps

:)

6 0
3 years ago
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Equation of direct variation involving a common proportion. Then identify the constant of variation
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The equation for direct variation is y=kx where k is the constant of variation.
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A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 100 hou
hodyreva [135]

Answer:

The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.

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{1-0.9}{2} = 0.05

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

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

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.

M = 1.645*\frac{600}{\sqrt{100}} = 98.7

The lower end of the interval is the sample mean subtracted by M. So it is 4500 - 98.7 = 4401.3 gallons

The upper end of the interval is the sample mean added to M. So it is 4500 + 98.7 = 4598.7 gallons

The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.

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3 years ago
Which number is an irrational number?
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Answer:

listen when in doubt go with choice 3.

Step-by-step explanation:

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