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fomenos
3 years ago
12

There are approximately 3.5 million deaths per year in a country express this quantity as deaths per minute

Mathematics
1 answer:
astra-53 [7]3 years ago
8 0
Hmmm ok... 3.5 million.. or 3,500,000

now, keeping in mind that, there are 365 days in a year(exempting leap-year), and 24 hrs in a day, and 60 minutes in 1hr.

\bf \cfrac{3500000~deaths}{\underline{year}}\cdot \cfrac{\underline{year}}{365~\underline{day}}\cdot \cfrac{\underline{day}}{24~\underline{hr}}\cdot \cfrac{\underline{hr}}{60~min}\implies \cfrac{3500000~deaths}{365\cdot 24\cdot 60~min} 
\\\\\\
\cfrac{3500000~deaths}{525600~min}\qquad \approx \qquad 6.6590563~\frac{deaths}{min}
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We can find this by first finding what -2u would equal by multiplying <5, 6> by -2. This gives us <-10, -12>.

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Now that we know what -2u and 5v are, we can substitute them into the equation and get
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I hope this helps!
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3 years ago
If students’ scores were normally distributed and the mean was 200 with a standard deviation of 40, then what is the probability
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The empirical rule tells you that 68% of the standard normal distribution is within 1 standard deviation of the mean. The distribution is symmetrical, so the amount in the lower tail is (1 -68%)/2 = 16%.

Since the number you're interested in, 240, is one standard deviation above the mean (200 +40), the percentage of interest is the sum of the area of the central part of the distribution along with the lower tail:

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