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2 years ago

14

A map has a scale of 2 cm equals 30 miles. If two towns are 300 miles apart, how far are they away from each other on the map?

2 answers:

aivan3 [116]2 years ago

7 0

Answer: The towns are 20 cm apart on the map.

Step-by-step explanation:

$\frac{2}{30} = \frac{x}{300}$
$600 = 30x$
$20 = x$

insens350 [35]2 years ago

4 0

Answer:

20cm

Step-by-step explanation:

2 = 30

30 (10) = 2(10)

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Volgvan

Answer:
david finished 24 problems more than ameetha
Step-by-step explanation:
<em>problems finished by ameetha = 12 problems</em>
<em>problems finished by ameetha = 12 problemsproblems finished by David = 3 times more than ameethas problem = 3*12 = 36</em>
<em>problems finished by ameetha = 12 problemsproblems finished by David = 3 times more than ameethas problem = 3*12 = 36the problems finished by David more than ameetha =</em>
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3 years ago

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You can complete this by solving:
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3 years ago

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3 years ago

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Answer:

The sample proportion of printers used in small business is:

$\hat{p}=\frac{25}{70}=0.3571$

The 95% confidence interval for the population proportion of printers that are used in small businesses is:

$\hat{p} \pm z_{\frac{0.05}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n} }$

Where:

$z_{\frac{0.05}{2}}=1.96$ is the critical value at 0.05 significance level

$\therefore 0.3571 \pm 1.96 \sqrt{\frac{0.3571(1-0.3571)}{70} }$

$0.3571 \pm 0.1122$

$\left ( 0.3571 - 0.1122, 0.3571 + 0.1122 \right)$

$\left(0.245,0.469 \right)$

Therefore, the 95% confidence interval for the population proportion of printers that are used in small businesses is (0.245 , 0.469)

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3 years ago