A wheel has a circumference of 7 5/6 feet. How many times does it turn in 423 feet?

Mathematics

1 answer:

Sliva [168]3 years ago

4 0

Umm 16 or 17 times if its 1 wheel

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Absolute value 5+7-12

blondinia [14]

5+7-12=0
12-12=0

the answer is 0

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4 years ago

Population in 1990 was 134 million. In 2000 it was 139 million. What was it in 2014

mihalych1998 [28]

Well first lets find the ROC (rate of change) in the sets of data.
1990 -> 134
2000 -> 139

so lets find the difference from the years given
2000-1990=10 so there is a 10 year gab
139-134=5 so there is a 5 million increase in the population

so divide 10 by 5 which gives us 2, so every year there is a 2 million increase in the population. so from 2000 to 2014 there is 14 years, so
14 x 2= 28, then add that to the latest population data
139+28=167
so the population in 2014 would be 167 million

Hope this helped!!

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Many people think that a national lobby's successful fight against gun control legislation is reflecting the will of a minority

Ierofanga [76]

Answer:

At least 653 citizens need to be sampled.

Step-by-step explanation:

The following formula is used to compute the minimum sample size required to estimate the true proportion who are in favor of gun control legislation within 5% margin of error:

n≥ p×(1-p) × $(\frac{z}{ME} )^2$ where

n is the sample size

p is the sample proportion of people who are in favor of gun control legislation ( $\frac{2250}{4000}=0.5625$

z is the corresponding z-score for 99% confidence level (2.575)

ME is the margin of error in the estimation (5% or 0.05)

Putting numbers in the formula

n≥ 0.5625×0.4375 × $(\frac{2.58}{0.05} )^2$ ≈652.7

n needs to be<em> at least 653</em> to provide this equation.

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3 years ago