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3 years ago

The wheel of a car rotated 1000 times in travelling a distance of 1.76 km. Find the radius of the wheel

Mathematics

2 answers:

vova2212 [387]3 years ago

7 0

Answer:

0.28m hope it help you☺........

myrzilka [38]3 years ago

6 0

<h2>1000 rotations cover 1.76 km </h2><h2>So, 1 revolution covers 1760/1000 m = 1.76 m </h2><h2>So, circumference = 1.76 m </h2><h2>Radius = Circumference/2π = 1.76/2(22/7) = 1.76*7/44 = 0.28m</h2>

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Answer:

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Step-by-step explanation:

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Let put some notation

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And the sample standard deviation for the differences, is:

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Now we can calculate the statistic given by :

$t=\frac{\bar d -\Delta}{\frac{s_d}{\sqrt{n}}}=\frac{53 -50}{\frac{12}{\sqrt{49}}}=1.75$

Since we don't have the population standard deviaition we need to use the t distribution and we can calculate the degrees of freedom given by:

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3 years ago

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Answer:

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= $\frac{50}{100}$ Or 50% of the pocket money he received

Therefore, money left with Jamie = 50% of total money he received as pocket money

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