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3 years ago

What is the length of PQ round to the nearest tenth of a unit p(-3 ,7) q(6 ,1)

Mathematics

2 answers:

Tema [17]3 years ago

7 0

Answer: The approximate length of PQ is 10.8 unit.

Step-by-step explanation:

Here the coordinates of point P are (-3,7) and the coordinates of Q are (6,1)

Thus, by the distance formula,

The distance between the points P and Q is,

$PQ = \sqrt{(6-(-3))^2+(1-7)^2}$

$=\sqrt{(6+3)^2+(-6)^2$

$=\sqrt{9^2+ 36}$

$=\sqrt{81+36}=\sqrt{117}=10.8166538264\approx 10.8$

Thus, the approximate length of PQ is 10.8 unit.

elixir [45]3 years ago

3 0

Answer:10.8 units

Step-by-step explanation:

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17 + (17x2 +1) =52

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Answer:

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Step-by-step explanation:

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In which

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A sample size of n is needed, and n is found when M = E.

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$E = 1.96\sqrt{\frac{0.3696*0.6304}{n}}$

$E\sqrt{n} = 1.96\sqrt{0.3696*0.6304}$

$\sqrt{n} = \frac{1.96\sqrt{0.3696*0.6304}}{E}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

$n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

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Answer:

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