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scoundrel [369]
3 years ago
11

A floor plan has a scale of 1/2 inch represents 3 ft what is area 6 in by 4 in​

Mathematics
1 answer:
lakkis [162]3 years ago
7 0

Answer:

12 feet by 8 feet

Step-by-step explanation:

The numbers times two. Because the oppisite of 1/2 is 2

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C) The third graph.

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An arithmetic series has seven terms. the first term is 5 and the last term is 53. find the sum of the series!
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The easiest way is to use (& to memorize) the sum formula for a AP:


Sum = 1st term added to the last term & multiplied by half the number of terms
S = (a+l)n/2

S = (5 + 53)(7/2) = 203 
5 0
3 years ago
In a poll, 74% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted o
Maksim231197 [3]

Answer:

324

Step-by-step explanation:

given that in a poll, 74% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted of murder?"

i.e. Sample proportion p=0.74\\q =1-p =0.26\\

Margin of error = 4% = 0.04

Confidence level =90%

Z critical value for 90% = 1.645

Margin of error = 1.645 * std error

Hence std error = \frac{0.04}{1.645} \\=0.0243

Std error is also equal to

\sqrt{\frac{pq}{n} } =\sqrt{\frac{0.74(0.26)}{n} } =0.0243\\\sqrt{n} =18..05\\n = 325.83~324

Sample size should be 324.

The formula is sample size = (Z critical value)^2 (pq)/(Margin of error )^2

3 0
3 years ago
After vigorous activity, your heart rate declines 7 beats per minute. How much would
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56

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8 0
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