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lara31 [8.8K]
3 years ago
9

In order to get a good workout on your treadmill, you figure you have to run 528 feet in one minute. What are the possible numbe

rs of miles you have to run in 20 minutes to exceed this rate? (Hint: 1 mile = 5280 feet)
PLEASE PROVIDE AN EXPLANATION, thank you!
Mathematics
1 answer:
Scrat [10]3 years ago
5 0

Answer:

2 miles.

Step-by-step explanation: Because 528 times 20 is 10560 then divide by 5280 equaling 2 miles.

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Hello,

Reminders:
$\sum_{i=1}^{n} i= \dfrac{n(n+1)}{2}$



$ \sum_{i=1}^{n} i^2= \dfrac{n(n+1)}{2}$


$ \sum_{i=1}^{n} i^3= \dfrac{n^2(n+1)^2}{4} $


n=6\\
x_{0}=0\\
x_{n}=3\\
\Delta= \dfrac{x_n-x_0}{n}=0.5\\


x_{i} =0+\Delta*i= \frac{i}{2}

$ \sum_{i=1}^{n}\ \Delta*f(x_{i})=\sum_{i=1}^{6}\  \dfrac{i^3/8-6i}{2} $
$= \dfrac{1}{2}\sum_{i=1}^{6}  (\frac{i^3}{8} -6i)=\dfrac{1}{16}*\frac{(6*7)^2}{4}- \frac{9*7}{2}= -3.9575


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<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> xls </span>
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Ierofanga [76]
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Wittaler [7]

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Steps-
Miles to cover- 50 miles = 50*5280 feet = 264,000 feet
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